Electricity trading system and electricity trading method

Abstract

To generate a GHG reduction effect of the whole power system by efficiently converting power derived from fossil fuel into green power in a power transaction market.SOLUTION: When a consumer C purchases PVC, a power transaction system transmits PVC purchase request data from the consumer C to a power bank PB via a retailer PR, and the power bank PB issues PVC data and transmits it to the consumer C via the retailer PR. When a consumer C makes a discharge request, the consumer C transmits PVC discharge request data to a power bank PB via a retailer PR, and the power bank PB notifies a power generation enterprise FFPP of a power supply instruction, instructs a green power generation device to start power generation, and starts power storage in a power storage device. The power generation company FFPP receives the power supply instruction and supplies power to the power system. When the return due date of the alternative power comes, the power bank PB supplies and returns the green power to the power system.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD

[0001] The present invention relates to a power trading system and a power trading method that establish economically equivalent exchange by exchanging fossil fuel-derived power, which generates GHG (greenhouse gas) but can guarantee the required amount of power generation when needed, and green power, which does not generate GHG but cannot guarantee the required amount of power generation when needed, and adjusting the economic value difference manifested as an exchange ratio at that time with the power generation amount of the green power, resulting in a GHG reduction effect. BACKGROUND ART

[0002] Conventionally, a technique for consigning and transmitting power generated by a certain power supplier to a power supply destination is known. For example, Patent Document 1 discloses a power consignment system that issues a power trading token including a power amount and a consideration amount corresponding to an evaluation of power stored based on power storage information, transfers the power trading token to a power supplier, and the power supplier side supplies power to a designated power supply destination based on the power trading token or the like. According to the conventional technique represented by such Patent Document 1, efficient power consignment operations in power trading become possible. PRIOR ART DOCUMENTS PATENT DOCUMENTS

[0003] PATENT DOCUMENT 1 JP 2021-015467 A SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION

[0004] However, the conventional technique represented by the above Patent Document 1 only aims to efficiently manage the history related to power consignment and transmission, and does not contribute to GX (Green Transformation), which is an initiative aiming to achieve both carbon neutrality and economic growth.

[0005] While efforts to curb GHG emissions, a major target of GX (Green Energy Exchange), include the trading of environmental values ​​such as "J-Credits," "Green Power Certificates," and "Non-Fossil Fuel Certificates," issues such as "hot air problems," "carbon leakage problems," "moral hazard problems," and "measurement and verification problems" have been pointed out, and the limitations of this type of indirect approach are beginning to be noted.

[0006] To more directly reduce GHG emissions, introducing green electricity is effective. However, simply increasing these sources would make it difficult to balance supply with nuclear, coal-fired, and hydroelectric power plants that meet base demand, and natural gas-fired power plants that meet fluctuating demand, thus necessitating restrictions (output curtailment) on green electricity output.

[0007] To achieve carbon neutrality by 2050, a new mechanism is needed that not only directly suppresses GHG emissions but also contributes to the stabilization of the power grid and is economically viable.

[0008] The present invention was made to solve the problems (challenges) of the above-mentioned prior art, and aims to provide an electricity trading system and electricity trading method that exchanges fossil fuel-derived electricity, which generates GHGs (greenhouse gases) but can guarantee the generation of the required amount when needed, with green electricity, which does not generate GHGs but cannot guarantee the generation of the required amount when needed, and adjusts the difference in economic value that becomes apparent as an exchange ratio in the case of exchange with the amount of green electricity generated to achieve an economic equivalent exchange, thereby generating a GHG reduction effect. [Means for solving the problem]

[0009] To solve the above-mentioned problems and achieve the objective, the present invention provides a consumer device owned by a consumer, a power generation business device that controls a fossil fuel-derived power generation device that generates electricity derived from fossil fuels, and a management device that manages a green power generation device that generates green electricity obtained from renewable energy and a storage device that stores the electricity generated by the green power generation device.connected on a designated blockchain A power trading system, wherein the management device, upon receiving a valuable asset as payment for electricity from the consumer device, provides power asset certificate information to guarantee the supply of a first amount of electricity corresponding to the valuable asset. The issuance process and When the consumer device receives a request to discharge the first amount of electricity based on the power asset certificate information, and the energy storage device has an amount of electricity greater than or equal to the first amount of electricity stored in it, the green power of the first amount of electricity stored in the energy storage device is supplied to the power grid. Control 1 Furthermore, when a request for discharge of the first amount of electricity based on the electricity asset certificate information is received from the consumer device, if the first amount of electricity is not stored in the energy storage device, a second system is instructed to supply the second amount of green electricity stored in the energy storage device to the power grid, and to supply fossil fuel-derived electricity from the power generation operator's device to the power grid as a substitute for the deficit amount of electricity that makes up the difference between the first amount of electricity and the second amount of electricity. On If the green electricity for the amount of the power shortage supplied to the power grid by the power generation operator's equipment is stored in the energy storage device, a third control is made to control the energy storage device and / or the green electricity generation device to return the green electricity corresponding to the amount of power shortage stored in the energy storage device to the power generation operator's equipment. A smart contract that automatically executes the command It is characterized by being equipped with [this feature].

[0010] Furthermore, the present invention is characterized in that, in the above invention, the electricity asset certificate information has a value storage function that stores the value of the amount of electricity equivalent to the value of the value asset, a function that can be exchanged for the value asset, and a value scale function that indicates the measure of the value of the amount of electricity, and is information that can be used as a representation equivalent to money on a predetermined network.

[0011] Furthermore, in the above invention, the present invention relates to the above invention. Smart contractsThe fourth control controls the energy storage device and / or the green power generation device to return the differential amount of electricity which is the difference between the economic value of the first amount of electricity generated by the fossil fuel power generation device and the economic value of the second amount of electricity generated by the green power generation device, when the economic value of the first amount of electricity generated by the fossil fuel power generation device exceeds the economic value of the second amount of electricity generated by the green power generation device, which is a premium state for fossil fuel power. Execute automatically It is characterized by the following:

[0012] Furthermore, in the above invention, the present invention relates to the above invention. Smart contracts teeth, When performing the issuance process for the aforementioned power asset certificate information, The valuable assets were received from the aforementioned consumer device. Then Even if the energy storage device does not store green electricity equivalent to the value asset, the power asset certificate information is issued to guarantee the supply of an amount of electricity equivalent to the value asset. Perform the process It is characterized by the following:

[0013] Furthermore, the present invention is characterized in that the green electricity in the above invention is electricity obtained from renewable energy sources such as solar power, wind power, hydropower, geothermal energy, and biomass.

[0014] Furthermore, the present invention comprises a consumer device owned by a consumer, a power generation business device that controls a fossil fuel-derived power generation device that generates electricity derived from fossil fuels, and a management device that manages a green power generation device that generates green electricity obtained from renewable energy and a storage device that stores the electricity generated by the green power generation device. connected on a designated blockchain A method for trading electricity in an electricity trading system, wherein the management device Smart contracts that are automatically executed However, when a valuable asset as payment for electricity is received from the consumer equipment, the issuance process includes issuing electricity asset certificate information to guarantee the supply of a first amount of electricity corresponding to the valuable asset, The aforementioned smart contract,a first control step of, when receiving a discharge request for the first power amount based on the power asset certificate information from the consumer device, if a power amount equal to or greater than the first power amount is stored in the power storage device, controlling to supply the green power of the first power amount stored in the power storage device to the power grid; The aforementioned smart contract, a second control step of, when receiving a discharge request for the first power amount based on the power asset certificate information from the consumer device, if the power amount of the first power amount is not stored in the power storage device, supplying the green power of a second power amount stored in the power storage device to the power grid, and instructing the power generation operator device to alternatively supply fossil-derived power of a deficient power amount that makes up the difference between the first power amount and the second power amount to the power grid; The aforementioned smart contract, and a third control step of, if the green power of the deficient power amount alternatively supplied to the power grid from the power generation operator device is stored in the power storage device, controlling the power storage device and / or the green power generation device to return the green power corresponding to the deficient power amount stored in the power storage device to the power generation operator device.

Effects of the Invention

[0015] According to the present invention, it is possible to produce economic effects while contributing to GHG reduction of power generation operators of fossil fuel-derived power and GHG reduction of the entire power grid.

Brief Description of the Drawings

[0016] [Figure 1] Figure 1 is a diagram showing an overview of the power transaction system according to Embodiment 1. [Figure 2] Figure 2 is a system configuration diagram of the power transaction system shown in Figure 1. [Figure 3] Figure 3 is an explanatory diagram for explaining the PVC purchase shown in Figure 1. [Figure 4] Figure 4 is an explanatory diagram for explaining the power procurement (PVC discharge request) shown in Figure 1. [Figure 5] Figure 5 is an explanatory diagram for explaining the power return shown in Figure 1. [Figure 6] Figure 6 is a functional block diagram showing the configuration of the management device illustrated in Figure 2. [Figure 7] Figure 7 is a diagram showing an example of the PVC data illustrated in Figure 6. [Figure 8] Figure 8 is a diagram showing an example of the power storage device capacity data illustrated in Figure 6. [Figure 9] Figure 9 is a diagram showing an example of the returned power amount data illustrated in Figure 6. [Figure 10] Figure 10 is a functional block diagram showing the configuration of the consumer device illustrated in Figure 2. [Figure 11] Figure 11 is a functional block diagram showing the configuration of the retailer device illustrated in Figure 2. [Figure 12] Figure 12 is a functional block diagram showing the configuration of the power generation operator device illustrated in Figure 2. [Figure 13] Figure 13 is a sequence diagram showing the processing procedure for PVC purchase in the power transaction system. [Figure 14] Figure 14 is a sequence diagram showing the processing procedure for power procurement (PVC discharge request) in the power transaction system. [Figure 15] Figure 15 is a sequence diagram showing the processing procedure for power return in the power transaction system. [Figure 16] Figure 16 is a functional block diagram showing the configuration of the management device of the power transaction system according to Embodiment 2. [Figure 17] Figure 17 is a diagram showing an example of the returned power amount data illustrated in Figure 16. [Figure 18] Figure 18 is a diagram showing the overview (Part 1) of the power transaction system according to Embodiment 3. [Figure 19] Figure 19 is a diagram showing the overview (Part 2) of the power transaction system according to Embodiment 3. [Modes for Carrying Out the Invention]

[0017] Embodiments of the power trading system and power trading method according to the present invention will be described in detail below with reference to the drawings. Note that the power trading system according to the present invention is not a system for transmitting power, but rather a system for trading the value of power.

[0018] [Embodiment 1] The outline of the power trading system according to Embodiment 1 will now be described. Figure 1 is a diagram showing an outline of the power trading system according to Embodiment 1. As shown in Figure 1, the power trading system is a system in which electricity is traded between a consumer C, a power retailer PR, a power bank PB, and a fossil fuel power plant FFPP. ​​When the power bank PB receives a valuable asset (an asset with a fixed price, shown as "payment" in the figure) from the consumer C, it issues power asset certificate information (hereinafter referred to as "PVC") that guarantees the supply of an amount of electricity equivalent to the valuable asset (granting power convertibility), and electricity is traded through the PVC. Here, PVC, which is given electricity convertibility, adds a new "function of preserving nominal value with kWh as its unit ((3) value preservation function)" to the (1) function of measuring value and (2) function of exchange that electricity already traded in the market possesses, thereby realizing the three requirements (1, 2, 3) for the establishment of money, and is information that can be used as a "representation similar to money" on a predetermined network. Here, although PVC is not "legal tender recognized as legal tender by law," it does meet the three requirements for money to be established, so to avoid confusion with legal tender, it is described as "a representation similar to money."

[0019] Consumer C has consumer equipment 50, and retailer PR has retail equipment 60. Power bank PB has a management unit 20, a storage unit 30, and a green power generation unit 40. The storage unit 30 stores the electricity generated by the green power generation unit 40. The green power generation unit 40 is a power generation unit that generates electricity from renewable energy. Power generator FFPP has power generator equipment 70, to which a power generation unit that generates fossil fuel-derived electricity (not shown) is connected.

[0020] When consumer C purchases PVC, consumer C sends a PVC purchase request from consumer equipment 50 to retailer PR's retailer equipment 60. For example, if purchasing 10kWh of PVC, consumer C pays retailer PR a purchase price that reflects the prevailing electricity market price at the time of purchase. Upon receiving the PVC purchase request from consumer C, retailer equipment 60 places an order for PVC with power bank PB's management equipment 20 based on the request from consumer C and pays the price to power bank PB. Power bank PB issues the PVC at its management equipment 20 in response to the order from retailer PR, and the issued PVC is transmitted to consumer C's consumer equipment 50 via retailer PR's retailer equipment 60.

[0021] Here, the total amount of PVC issued by the power bank PB does not need to be limited by the amount of energy stored in the energy storage devices that the power bank PB stores or the maximum capacity of the energy storage devices (rated capacity, effective capacity, etc.). For example, the amount of PVC issued by the power bank PB's green power generation device 40 can be set based on (1) the total amount of power that can be generated within a predetermined period in the future, (2) the total amount of green electricity that can be procured in a specific period in the future based on supply and demand contracts with other power generators and energy storage companies, or the sum of (1) and (2).

[0022] Furthermore, when a power bank private bank (PB) issues a PVC (Power Voucher), it can issue the PVC even if the total amount of energy stored in its energy storage devices at the time of issuance is less than the amount of energy in the PVC being issued.

[0023] When consumer C procures electricity using PVC, consumer C transmits an electricity procurement request (PVC discharge request) from consumer equipment 50 to retailer equipment 60 of retailer PR. When retailer PR receives a PVC discharge request from consumer equipment 50, retailer equipment 60 transmits the PVC discharge request to power bank PB's management equipment 20. When power bank PB's management equipment 20 receives a PVC discharge request from retailer equipment 60, it notifies power generator equipment 70 of power generator FFPP of an instruction to supply alternative electricity equivalent to the PVC, and power generator FFPP supplies electricity equivalent to the PVC equivalent to the PVC to the power grid.

[0024] Furthermore, when the power bank PB instructs the power generator FFPP to supply alternative electricity derived from fossil fuels, the power bank PB notifies the power generator FFPP of supply information, including the date by which the amount of green electricity equivalent to the economic value of the alternatively supplied electricity must be returned. In addition, if the power generator FFPP supplies fossil fuel-derived electricity to the power grid, the power bank PB amortizes the corresponding PVC. If the power generator FFPP supplies fossil fuel-derived electricity to the power grid, the power generator equipment 70 transmits data on the amount of alternatively supplied electricity to the power bank PB's management device 20. It is also conceivable that the power bank PB may deposit collateral equivalent to the economic value of the alternatively supplied electricity with the power generator FFPP prior to the alternative supply.

[0025] When the power bank PB's management device 20 receives data on the amount of alternative power supplied from the power generator equipment 70 of the power generator FFPP, it issues a power generation instruction to the green power generator 40, and stores the power generated by the green power generator 40 in the energy storage device 30. The management device 20 monitors the amount of energy stored in the energy storage device 30, and when the deadline for returning the alternative power to the power generator FFPP arrives, the management device 20 instructs the energy storage device 30 to supply the green power of the alternative power supply amount to the power grid. Once the power bank PB's management device 20 has supplied the green power of the alternative power supply amount to the power grid, it sends a return completion notice to the power generator equipment 70. Also, when the power generator FFPP receives the return completion notice, if it has received a security deposit, it transfers the security deposit to the power bank PB.

[0026] Thus, in the power trading system of the present invention, a power bank PB issues a PVC that guarantees power supply without a time limit, and when a consumer C makes a discharge request using the PVC, the power bank PB responds to the discharge request by instructing the power generator FFPP to supply fossil fuel-derived electricity to the power grid as an alternative. Subsequently, the power bank PB generates and stores green electricity and returns the fossil fuel-derived electricity that was supplied as an alternative as green electricity, thereby enabling the power generator FFPP to convert its fossil fuel-derived electricity into green electricity.

[0027] Furthermore, in the power trading system of the present invention, since PVCs are given the properties of de facto money, issued PVCs are expected to maintain a certain balance, similar to ordinary savings accounts, and power bank PBs can invest the valuable assets received at the time of PVC issuance in the financial market and obtain financial income such as interest.

[0028] <System Configuration Diagram of the Electricity Trading System> Next, a system configuration diagram of the power trading system of Embodiment 1 will be described. Figure 2 is a system configuration diagram of the power trading system shown in Figure 1. As shown in Figure 2, the system includes a management device 20 for the power bank PB, a customer device 50 for customer C, a retailer device 60 for retailer PR, and a power generator device 70 for power generator FFPP. ​​The management device 20, the customer device 50, the retailer device 60, and the power generator device 70 are connected to a network N.

[0029] Note that while Figure 2 only shows the bare minimum of devices connected to Network N in order to briefly explain the system configuration, there are multiple devices equivalent to the management device 20, consumer device 50, retailer device 60, and power generator device 70 owned by other businesses that do not appear in Figure 2. It is also conceivable that the power bank PB, consumer C, retailer PR, and power generator FFPP shown in Figure 2 may temporarily or permanently borrow some or all of these devices owned by other businesses and have them perform the functions of those devices on their behalf.

[0030] The management device 20 is connected to the power storage device 30 and the green power generation device 40. In addition, the power generation operator device 70 is connected to a fossil fuel-derived power generation device 73 that generates power derived from fossil fuels. Connected to the power system PG are the power storage device 30 of the power bank PB, the factory 59 of the consumer C, and the fossil fuel-derived power generation device 73 of the power generation operator FFPP. Here, the location to which power is supplied to the consumer C is the factory 59, but it may also be an ordinary household, an office building, or the like that consumes power.

[0031] The management device 20 performs processing of receiving an order for PVC, processing of issuing PVC, processing of receiving a discharge request using PVC, processing of instructing supply of fossil fuel-derived power, processing of instructing power generation using the green power generation device 40, processing of monitoring the amount of stored power, processing of instructing return of green power, and the like.

[0032] The consumer device 50 performs processing of a PVC purchase request, processing of receiving PVC data, processing of requesting discharge supply using PVC, and the like. The retailer device 60 performs processing of receiving a PVC order, processing of placing a PVC order, processing of receiving PVC data, processing of transmitting PVC data, and the like. The power generation operator device 70 performs processing of instructing supply of fossil fuel-derived power, processing of returning green power, processing of transferring and receiving collateral money, and the like.

[0033] <Overview of PVC Purchase> Next, an overview of PVC purchase in the power transaction system will be described. FIG. 3 is an explanatory diagram for explaining the PVC purchase shown in FIG. 1. As shown in FIG. 3, the consumer device 50 of the consumer C transmits a PVC purchase request including data of the amount of power to be purchased to the retailer device 60 of the retailer PR (S1). The retailer device 60 places an order for PVC with the management device 20 of the power bank PB based on the purchase request received from the consumer device 50 (S2).

[0034] When the management device 20 of the power bank PB receives PVC order data from the retailer device 60, it generates (issues) PVC (S3). Specifically, it issues PVC data for the desired amount of power purchase included in the order data, and encrypts the data using encryption technology with a private key or the like to prevent the data content from being tampered with. The management device 20 transmits the issued PVC data to the retailer device 60 (S4).

[0035] Upon receiving the PVC data from the management device 20, the retailer device 60 transmits the PVC data to the consumer device 50 (S5). The consumer device 50 receives the PVC data from the retailer device 60 (S6) and completes the purchase of PVC.

[0036] Note that when consumer C purchases PVC, unit price information of PVC is required in advance. The unit price information can be obtained via a constant distribution method by the power bank PB (exchange system), or a method in which retailer PR presents the price to consumer C each time based on a request from consumer C (quote system). In the case of the quote system, retailer PR needs to inquire of power bank PB for unit price information before presenting the price to consumer C.

[0037] <Overview of PVC Discharge Request> Next, an overview of the PVC discharge request in the power trading system will be described. Figure 4 is an explanatory diagram for explaining the power procurement (PVC discharge request) shown in Figure 1. As shown in Figure 4, consumer C transmits PVC discharge request data from the consumer device 50 to the retailer device 60 (S7). Upon receiving the PVC discharge request data from the consumer device 50, the retailer device 60 of retailer PR transmits the PVC discharge request data to the management device 20 of power bank PB (S8).

[0038] Upon receiving the PVC discharge request data from the retailer device 60, the management device 20 notifies the power generation company device 70 of the pre-contracted power generation business operator FFPP of a supply instruction for power derived from fossil fuels (S9). Upon receiving the power supply instruction for fossil fuel-derived power, the power generation company device 70 supplies the fossil fuel-derived power included in the power supply instruction from the fossil fuel-derived power generation device 73 to the power grid (S10).

[0039] <Summary of the return of alternative electricity> Next, we will explain the return of electricity that the power bank PB has supplied to the power generator FFPP. ​​Figure 5 is an explanatory diagram for explaining the return of electricity shown in Figure 1. As shown in Figure 5, the power bank PB's management device 20 notifies the green power generation device 40 connected to the management device 20 of a power generation instruction (S11). Here, the green power generation device 40 turns on the charge controller etc. included in the green power generation device 40 and stores the generated electricity in the energy storage device 30.

[0040] The management device 20 monitors the amount of energy stored in the energy storage device 30, and when the due date for returning the alternatively supplied electricity arrives, it returns green electricity equivalent to the economic value of the alternatively supplied fossil fuel-derived electricity from the energy storage device 30 to the power grid (S12). Once the green electricity return supply is complete, the management device 20 sends a notification of completion of green electricity return to the power generation operator's device 70 (S13). The power generation operator's device 70 receives the notification of completion of green electricity return (S14).

[0041] As described above, the power trading system according to the present invention transmits PVC purchase request data from the consumer device 50 of consumer C to the power bank PB's management device 20 via the retailer device 60 of retailer PR. The management device 20 generates PVC and transmits it as PVC data to the consumer device 50 via the retailer device 60. Once PVC discharge request data has been transmitted from the consumer device 50 to the management device 20 via the retailer device 60, the management device 20 notifies the power generator device 70 of the power generator FFPP of a power supply instruction, and the power generator FFPP supplies fossil fuel-derived electricity to the power grid as an alternative. Once the management device 20 has notified of the power supply instruction, it instructs the green power generation device 40 to start power generation and starts storing energy in the energy storage device 30.

[0042] The management device 20 returns the fossil fuel-derived electricity to the power grid by supplying green electricity equivalent to the economic value of the fossil fuel-derived electricity that was replaced, when the return date for the replacement electricity arrives. Specifically, when green electricity equivalent to the economic value of the fossil fuel-derived electricity supplied as replacement by the power generation company FFPP is stored in the energy storage device 30, and the return deadline included in the returned electricity amount data arrives, the replacement electricity is returned by supplying green electricity equivalent to the economic value of the replacement electricity amount included in the returned electricity amount data to the power grid. Furthermore, this return allows for the conversion of fossil fuel-derived electricity into green electricity by returning the fossil fuel-derived electricity supplied as replacement with green electricity equivalent to its economic value.

[0043] <Configuration of the control device 20> Next, the configuration of the power bank PB management device 20 will be described. Figure 6 is a functional block diagram showing the configuration of the management device 20 shown in Figure 2. As shown in Figure 6, the management device 20 has a communication I / F unit 23, a storage unit 24 and a control unit 25, and is connected to a display unit 21, an input unit 22, a power storage device 30 and a green power generation device 40. The display unit 21 is a display device such as a liquid crystal display that displays various information. The input unit 22 is an input device such as a mouse or keyboard. The communication I / F unit 23 is an interface unit for communicating with the retailer device 60 and the power generation business device 70.

[0044] The energy storage device 30 is a device that stores green electricity generated by a green power generation device 40 that generates electricity from renewable energy, nuclear energy such as nuclear power and nuclear fusion. The energy storage device 30 is, for example, a lithium-ion battery or a NAS battery. The green power generation device 40 is a device that generates renewable energy. For example, a solar power generation device or a wind power generation device.

[0045] The storage unit 24 is a storage device such as a hard disk drive or non-volatile memory, and stores PVC data 24a, stored energy amount data 24b, and returned energy amount data 24c.

[0046] PVC data 24a is PVC data issued by the power bank PB. For example, as shown in Figure 7, it includes data such as the date, PVC identifier (PVCID), energy amount, and amortization flag. Here, the date "2024 / 5 / 10" is associated with PVCID "PVC000012", energy amount (kWh) "10", and amortization flag "0", the date "2024 / 5 / 10" is associated with PVCID "PVC000013", energy amount (kWh) "20", and amortization flag "0", and the date "2024 / 5 / 11" is associated with PVCID "PVC000014", energy amount (kWh) "50", and amortization flag "0". Note that the amortization flag in PVC data 24a is set to "1" when power is supplied in response to a PVC discharge request received from a consumer.

[0047] The energy storage data 24b is data on the amount of energy stored in the energy storage device 30. For example, as shown in Figure 8, it includes data such as date, time, and amount of energy (kWh). Here, the date "2 / 24" is associated with the time "10:00" and the amount of energy (kWh) "0.7", the date "2 / 24" is associated with the time "10:10" and the amount of energy (kWh) "0.72", and the date "2 / 24" is associated with the time "10:20" and the amount of energy (kWh) "0.75".

[0048] The returned electricity data 24c represents data from when a power generation company (FFPP) supplies electricity derived from fossil fuels as an alternative. For example, as shown in Figure 9, the data includes the date, company, returned electricity amount (kWh), and return deadline. Here, the date "February 22nd" is associated with the company name "A Power," the returned electricity amount (kWh) "100," and the return deadline "March 7th, 10:00," while the date "March 5th" is associated with the company "B Power," the returned electricity amount (kWh) "50," and the return deadline "March 14th, 10:00."

[0049] The control unit 25 is a control unit that controls the entire management device 20, and includes an order processing unit 25a, a PVC issuance processing unit 25b (corresponding to the "issuance unit" in the claim), a discharge request processing unit 25c, a power supply instruction unit 25d (corresponding to the "fossil fuel-derived power supply instruction unit" in the claim), a power generation instruction unit 25e, a stored energy monitoring processing unit 25f (corresponding to the "monitoring unit" in the claim), and a green power return instruction unit 25g. In practice, by loading these programs into the CPU and executing them, the processes corresponding to the order processing unit 25a, the PVC issuance processing unit 25b, the discharge request processing unit 25c, the power supply instruction unit 25d, the power generation instruction unit 25e, the stored energy monitoring processing unit 25f, and the green power return instruction unit 25g are executed, respectively.

[0050] The order processing unit 25a is a processing unit that receives order data for PVC transmitted from the retailer device 60. The PVC issuance processing unit 25b is a processing unit that issues PVC based on the order data and transmits it to the retailer device 60. The issued PVC is stored in the storage unit 24 as PVC data 24a.

[0051] The discharge request processing unit 25c is a processing unit that receives a PVC discharge request transmitted from the consumer device 50 via the retailer device 60 and acquires the power amount data included in the PVC discharge request.

[0052] The power supply instruction unit 25d is a processing unit that notifies the power generator FFPP of a power supply instruction derived from fossil fuels, receives a notification from the power generator FFPP of the completion of the supply of alternative power, and amortizes the PVC. Specifically, it notifies the power generator FFPP of a power supply instruction based on the amount of electricity data acquired by the discharge request processing unit 25c. Here, the power supply instruction also includes the amount of return electricity that the power bank PB's green power generation equipment 40 will generate in the future and the return deadline calculated based on the amount of return electricity, as agreed upon with the power generator FFPP.

[0053] Subsequently, the power supply instruction unit 25d receives a notification of completion of alternative power supply transmitted from the power generator FFPP and performs a predetermined PVC amortization process. Specifically, when the power supply instruction unit 25d receives a notification of completion of alternative power supply from the power generator equipment 70, it sets the return flag of the data in the PVC data 24a that corresponds to the PVCID included in the PVC discharge request from the consumer equipment 50 to "1".

[0054] Here, the power supply instruction unit 25d has described the case in which it performs PVC amortization processing by setting the amortization flag of the PVC data 24a to "1". However, PVC amortization may also be performed by deleting the data from the PVC data 24a that corresponds to the PVCID included in the PVC discharge request from the consumer device 50.

[0055] The power generation instruction unit 25e performs the process of instructing the green power generation device 40 to start power generation. Specifically, when the management device 20 receives notification from the power generation operator device 70 that the supply of alternative power has been completed, the power generation instruction unit 25e notifies the green power generation device 40 to start power generation in order to generate the amount of returned power.

[0056] The energy storage amount monitoring processing unit 25f performs a process to monitor the amount of energy stored in the energy storage device 30. Specifically, the energy storage amount monitoring processing unit 25f reads data on the amount of energy stored in the energy storage device 30 at specific time intervals and monitors whether or not the storage of the return energy has been completed.

[0057] The green power return instruction unit 25g issues an instruction to return the amount of power to be returned. Specifically, when the amount of power stored in the energy storage device 30 is equal to or greater than the amount of power to be returned, and the deadline for returning power to the power generator FFPP has arrived, the green power return instruction unit 25g instructs the energy storage device 30 to supply green power to the power grid, and after discharging the amount of power to be returned, it sends a notification to the power generator device 70 that the return of green power has been completed.

[0058] <Configuration of the consumer device 50> Next, the configuration of the consumer device 50 of the power trading system will be described. Figure 10 is a functional block diagram showing the configuration of the consumer device 50 shown in Figure 2. As shown in Figure 10, the consumer device 50 has a display unit 51, an input unit 52, a communication I / F unit 53, a storage unit 54, and a control unit 55. The display unit 51 is a display device such as a liquid crystal display that displays various information. The input unit 52 is an input device such as a mouse or keyboard. The communication I / F unit 53 is an interface unit for communicating with the retailer device 60.

[0059] The storage unit 54 is a storage device such as a hard disk drive or non-volatile memory, and stores the PVC data 54a. The PVC data 54a is PVC data received from the retailer device 60.

[0060] The control unit 55 is a control unit that controls the entire consumer device 50 and includes a purchase processing unit 55a, a PVC data reception processing unit 55b, and a discharge request processing unit 55c. In practice, by loading these programs into the CPU and executing them, the purchase processing unit 55a, the PVC data reception processing unit 55b, and the discharge request processing unit 55c are made to execute the processes corresponding to them, respectively.

[0061] The purchase processing unit 55a transmits PVC purchase request data from the consumer device 50 to the retailer device 60. The PVC data receiving processing unit 55b receives the PVC data transmitted from the retailer device 60 and stores it in the storage unit 54 as PVC data 54a. The discharge request processing unit 55c transmits discharge request data, including the PVC data 54a, to the retailer device 60 when the consumer wishes to receive power.

[0062] <Configuration of the retailer equipment 60> Next, the configuration of the retailer device 60 of the power trading system will be described. Figure 11 is a functional block diagram showing the configuration of the retailer device 60 shown in Figure 2. As shown in Figure 11, the retailer device 60 has a communication I / F unit 63, a storage unit 64, and a control unit 65, and is connected to a display unit 61 and an input unit 62. The display unit 61 is a display device such as a liquid crystal display that displays various information. The input unit 62 is an input device such as a mouse or keyboard. The communication I / F unit 63 is an interface unit for communicating with the management device 20 and the consumer device 50.

[0063] The storage unit 64 is a storage device such as a hard disk drive or non-volatile memory, and stores order data 64a and PVC data 64b. The order data 64a is data of PVC purchase requests received from the customer device 50. The PVC data 64b is data of PVC transmitted from the management device 20.

[0064] The control unit 65 is a control unit that controls the entire retail device 60 and includes an order processing unit 65a, an order placement processing unit 65b, a PVC data reception processing unit 65c, a PVC data transmission processing unit 65d, and a discharge request processing unit 65e. In practice, by loading these programs into the CPU and executing them, the order processing unit 65a, the order placement processing unit 65b, the PVC data reception processing unit 65c, the PVC data transmission processing unit 65d, and the discharge request processing unit 65e are made to execute the processes corresponding to them, respectively.

[0065] The order processing unit 65a receives purchase request data from the customer device 50 and stores it in the storage unit 64 as order data 64a. The order processing unit 65b sends PVC order data to the management device 20 based on the order data 64a. The PVC data receiving processing unit 65c receives the PVC data sent from the management device 20 and stores it in the storage unit 64 as PVC data 64b.

[0066] The PVC data transmission processing unit 65d transmits the PVC data 64b to the consumer device 50. The discharge request processing unit 65e receives PVC discharge request data, including the PVC data 54a, from the consumer device 50 and transmits the PVC discharge request data to the management device 20.

[0067] <Configuration of the power generation equipment 70> Next, the configuration of the power generation equipment 70 of the power trading system will be described. Figure 12 is a functional block diagram showing the configuration of the power generation equipment 70 shown in Figure 2. As shown in Figure 12, the power generation equipment 70 has a communication I / F unit 74, a storage unit 75, and a control unit 76, and is connected to a display unit 71, an input unit 72, and a fossil fuel-derived power generation device 73.

[0068] The display unit 71 is a display device such as a liquid crystal display that displays various information. The input unit 72 is an input device such as a mouse or keyboard. The fossil fuel-derived power generation device 73 is a power generation device that generates electricity derived from fossil fuels. The communication I / F unit 74 is an interface unit for communicating with the management device 20.

[0069] The storage unit 75 is a storage device such as a hard disk drive or non-volatile memory, and stores alternative energy data 75a. The alternative energy data 75a is energy data included in the power supply instruction received from the power bank PB management device 20.

[0070] The control unit 76 is a control unit that controls the entire power generation equipment 70 and has a power supply instruction processing unit 76a and a power return processing unit 76b. In practice, by loading these programs into the CPU and executing them, the power supply instruction processing unit 76a and the power return processing unit 76b are made to execute the processes corresponding to them, respectively.

[0071] The power supply instruction processing unit 76a receives a power supply instruction transmitted from the power bank PB management device 20 and stores it in the storage unit 75 as alternative power amount data 75a. The power supply instruction processing unit 76a notifies the fossil fuel-derived power generation device 73 connected to the power generation operator device 70 of an instruction to supply the alternative power amount of fossil fuel-derived electricity to the power grid. Once the fossil fuel-derived electricity has been supplied, the power supply instruction processing unit 76a transmits an alternative power supply completion notification to the management device 20.

[0072] If the power return processing unit 76b receives a notification of completion of green power return from the power bank PB management device 20, it receives the notification and deletes the corresponding data from the alternative power amount data 75a. Alternatively, if the power return processing unit 76b receives a notification of completion of green power return from the power bank PB management device 20, it may receive the notification and set a return flag on the corresponding data in the alternative power amount data 75a.

[0073] <Processing procedure for PVC purchase in the power trading system> Next, the processing procedure for PVC purchase in the power trading system will be described. Figure 13 is a sequence diagram showing the processing procedure for PVC purchase in the power trading system. As shown in Figure 13, the consumer device 50 transmits PVC purchase request data to the retailer device 60 (step S101). Once the retailer device 60 receives the PVC purchase request data (step S102), it transmits the PVC purchase request data to the management device 20 as order data (step S103).

[0074] If the management device 20 receives order data (step S104), it generates PVC equivalent to the amount of electricity requested for PVC purchase included in the order data (step S105). Then, the management device 20 transmits the PVC data to the retailer device 60 (step S106). The retailer device 60 receives the PVC data from the management device 20 (step S107) and transmits the PVC data to the consumer device 50 (step S108). The consumer device 50 receives the PVC data transmitted from the retailer device 60 (step S109).

[0075] <Processing procedure for discharge requests in the power trading system> Next, the procedure for processing discharge requests in the power trading system will be described. Figure 14 is a sequence diagram showing the procedure for processing discharge requests in the power trading system. As shown in Figure 14, when a consumer C requests power supply using PVC, the consumer device 50 sends PVC discharge request data to the retailer device 60 (S201). In this case, the PVC discharge request data includes PVC data that has been purchased in advance.

[0076] The retailer device 60 receives PVC discharge request data from the consumer device 50 (step S202) and transmits the PVC discharge request data to the management device 20 (step S203). The management device 20 receives the PVC discharge request data from the retailer device 60 (step S204). The management device 20 then creates a power supply instruction to supply the amount of electricity requested by consumer C and notifies the power generator device 70 of the power supply instruction (step S205).

[0077] The power generator equipment 70 receives a power supply instruction from the management device 20 (step S206). The power generator equipment 70 then notifies the fossil fuel-derived power generator 73 connected to the power generator equipment 70 of the instruction to supply the amount of electricity included in the power supply instruction to the power grid (step S207). Once the power supply from the fossil fuel-derived power generator 73 to the power grid is complete, the power generator equipment 70 sends a notification of completion of alternative power supply to the management device 20 (step S208).

[0078] The management device 20 receives a notification from the power generator equipment 70 that the alternative power supply has been completed (step S209) and amortizes the PVC corresponding to the PVC data included in the PVC discharge request data (step S210). Specifically, the management device 20 sets the amortization flag to the corresponding data in the PVC data 24a, for example, to "1".

[0079] <Processing procedure for electricity returns in the electricity trading system> Next, the procedure for processing the return of electricity in the electricity trading system will be described. Figure 15 is a sequence diagram showing the procedure for processing the return of electricity in the electricity trading system. As shown in Figure 15, when the electricity bank PB discharges the amount of electricity to be returned, the management device 20 of the electricity bank PB notifies the green power generation device 40 of a power generation instruction (step S301), and stores the generated green electricity in the energy storage device 30.

[0080] The management device 20 then determines whether or not the energy storage device 30 has been able to store the amount of energy to be returned (step S302). If the amount of energy to be returned has not been stored (step S302: No), the management device 20 waits until the amount of energy to be returned has been stored. If the amount of energy to be returned has been stored (step S302: Yes), the management device 20 determines whether or not the predetermined return deadline has been reached (step S303).

[0081] If the predetermined return deadline has not yet passed (Step S303: No), the management device 20 waits until the predetermined return deadline has passed. If the predetermined return deadline has passed (Step S303: Yes), the management device 20 notifies the energy storage device 30 of the instruction to return the green power amount to the power grid (Step S304). Once the return of the green power amount to the power grid is complete, the management device 20 sends a notification of completion of green power return to the power generator equipment 70 (Step S305). The power generator equipment 70 receives the notification of completion of green power return from the management device 20 (Step S306) and terminates processing.

[0082] As described above, in this embodiment 1, the power trading system transmits PVC purchase request data from the consumer device 50 of consumer C to the power bank PB's management device 20 via the retailer device 60 of retailer PR. The management device 20 generates PVC and transmits it as PVC data to the consumer device 50 via the retailer device 60. Once PVC discharge request data has been transmitted from the consumer device 50 to the management device 20 via the retailer device 60, the management device 20 notifies the power generator device 70 of the power generator FFPP of a power supply instruction, and the power generator FFPP supplies fossil fuel-derived electricity to the power grid. Once the management device 20 has notified the power supply instruction, it instructs the green power generation device 40 to start generating electricity and starts storing electricity in the energy storage device 30. When the return date arrives, the management device 20 discharges the amount of electricity to be returned to the power grid.

[0083] In Embodiment 1 described above, the case in which consumer C receives power supply by requesting PVC discharge using purchased PVC was explained, but consumer C may also sell the PVC purchased through retailer PR to power bank PB. Furthermore, although the case in which consumer C purchases PVC and requests PVC discharge through retailer PR was explained, consumer C may also conduct direct transactions with power bank PB without going through retailer PR. In addition, consumer C may also trade PVC directly with other consumers. In this case, it is desirable that a trading market for trading PVC be established.

[0084] [Embodiment 2] By the way, the electricity trading system of Embodiment 1 described above was the case where the economic value of fossil fuel-derived electricity (alternative electricity) that the power bank PB receives as a substitute supply from the power generator FFPP is the same as the economic value of green electricity (returned electricity) that the power bank PB returns to the power generator. However, the electricity trading system of Embodiment 2 describes the case where the economic value of the alternative electricity and the economic value of the returned electricity are different.

[0085] Here, the economic value of alternative electricity is determined based on the cost of generation, the profit of the power generator, and the power supply capacity that is not affected by time, weather, or location. The economic value of returned electricity is determined based on the cost of storage-based power generation, the profit of the storage-based power generator, and the value of the CO2 reduction effect.

[0086] <Configuration of the control device 80> Figure 16 is a functional block diagram showing the configuration of the power trading system management device 80 according to Embodiment 2. Note that functional parts similar to those in the management device 20 shown in Figure 6 are denoted by the same reference numerals, and their detailed descriptions are omitted. As shown in Figure 16, the management device 80 has a communication I / F unit 23, a storage unit 84, and a control unit 85, and is connected to a display unit 21, an input unit 22, a power storage device 30, and a green power generation device 40. The display unit 21 is a display device such as a liquid crystal display that displays various information. The input unit 22 is an input device such as a mouse or keyboard. The communication I / F unit 23 is an interface unit for communicating with the retailer device 60 and the power generation business device 70.

[0087] The storage unit 84 is a storage device such as a hard disk drive or non-volatile memory, and stores PVC data 24a, stored energy amount data 24b, and returned energy amount data 84a.

[0088] The returned electricity data 84a represents data from when a power generation company (FFPP) supplies electricity derived from fossil fuels as an alternative. For example, as shown in Figure 17, the data includes date, company, returned electricity amount (kWh), return rate, and return deadline. Here, the date "February 22nd" is associated with company name "A Power," returned electricity amount (kWh) "100," return rate "1.1," and return deadline "March 7th 10:00," while the date "March 5th" is associated with company "B Power," returned electricity amount (kWh) "50," return rate "1.2," and return deadline "March 14th 10:00."

[0089] When the return deadline arrives, the management device 80 supplies the power grid with an amount of electricity equal to the amount of electricity to be returned multiplied by the return amount ratio. For example, if the business operator is A Power, it will supply the power grid with 110 kWh of electricity to be returned on the return deadline of "March 7th, 10:00".

[0090] The control unit 85 is a control unit that controls the entire management device 80 and includes an order processing unit 25a, a PVC issuance processing unit 25b, a discharge request processing unit 25c, a power supply instruction unit 25d, a power generation instruction unit 25e, a stored energy monitoring processing unit 25f, a green power return instruction unit 25g, and a return energy ratio calculation unit 85a. In practice, by loading these programs into the CPU and executing them, the processes corresponding to the order processing unit 25a, the PVC issuance processing unit 25b, the discharge request processing unit 25c, the power supply instruction unit 25d, the power generation instruction unit 25e, the stored energy monitoring processing unit 25f, the green power return instruction unit 25g, and the return energy ratio calculation unit 85a are executed, respectively.

[0091] The returned energy ratio calculation unit 85a is a processing unit that calculates the ratio of returned energy that corresponds to the economic value of the replacement energy, based on the economic value of the replacement energy and the economic value of the returned energy. For example, the returned energy ratio calculation unit 85a calculates a value obtained by dividing the economic value of the replacement energy per predetermined unit (e.g., 1 kWh) by the economic value of the returned energy per predetermined unit. If the economic value of the replacement energy per predetermined unit is greater than the economic value of the returned energy per predetermined unit, the returned energy ratio calculation unit 85a calculates a value greater than 1. If the economic value of the replacement energy per predetermined unit is less than the economic value of the returned energy per predetermined unit, the returned energy ratio calculates a value less than 1.

[0092] As described above, in this embodiment 2, if the economic value of the alternative electricity supplied by the power bank PB from the power generator FFPP differs from the economic value of the green electricity (returned electricity) that the power bank PB returns to the power generator, the power trading system adjusts the ratio of returned electricity so that the economic value of the returned electricity is equivalent to the economic value of the alternative electricity. Specifically, if the economic value of the alternative electricity is greater than the economic value of the returned electricity, the power bank PB returns an amount of returned electricity to the power grid such that the ratio of returned electricity to one unit of alternative electricity is greater than one unit. If the economic value of the alternative electricity is less than the economic value of the returned electricity, the power bank PB returns an amount of returned electricity to the power grid such that the ratio of returned electricity to one unit of alternative electricity is less than one unit.

[0093] Furthermore, in the power trading system of the present invention, when a power bank (PB) receives a PVC discharge request, it entrusts the alternative supply to a power generator (FFPP) with power supply capabilities that are not affected by time, weather, or region, in order to reliably supply the specified amount of discharge at the specified discharge date and time. However, in market conditions where the economic value of such power supply capabilities is high, an economic equivalent exchange is only achieved when the FFPP returns green electricity exceeding α (kWh) the amount of electricity it supplied as an alternative (a state in which the economic value of fossil fuel-derived electricity exceeds that of green electricity). In this case, α (kWh) of the amount of green electricity returned to the FFPP replaces α (kWh) of fossil fuel-derived power generation in the FFPP's power generation plan with green electricity, thus contributing to a reduction in GHGs across the entire power grid.

[0094] Furthermore, in the power trading system of the present invention, even when the power bank PB generates the excess green electricity, if it uses renewable energy power generation equipment (solar, wind, hydro, tidal, geothermal, etc.) whose marginal cost of generation is considered to be zero, no new costs will be incurred in generating the excess green electricity.

[0095] In the embodiments 1 and 2 described above, the management device 20 instructs the energy storage device 30 to supply the stored green power to the power grid in order to return alternative power. However, the present invention is not limited thereto, and the management device 20 may also instruct the energy storage device 30 and / or the green power generation device (40) to return alternative power.

[0096] [Embodiment 3] By the way, in the power trading systems according to Embodiments 1 and 2 described above, the case in which the power bank PB sends an instruction to the power generator FFPP to supply alternative power when it receives a discharge request from the consumer equipment 50 was explained. However, in the power trading system according to Embodiment 3, the case in which the power bank PB supplies power to the power grid from the energy storage device 30 owned by the power bank PB when it receives a discharge request from the consumer equipment 50 will be explained.

[0097] Figures 18 and 19 show an overview of the power trading system according to Embodiment 3. If the power bank PB's energy storage device 30 has a storage capacity greater than the amount of electricity included in the discharge request transmitted from the consumer device 50, the power bank PB supplies the entire amount of electricity included in the power request as green power from the energy storage device 30 to the power grid. Functional parts similar to those in the power trading system shown in Figure 2 are denoted by the same reference numerals, and their detailed explanation is omitted.

[0098] As shown in Figure 18, consumer C transmits PVC discharge request data from consumer device 50 to retailer device 60 (S21). When retailer PR's retailer device 60 receives the PVC discharge request data from consumer device 50, it transmits the PVC discharge request data to the power bank PB's management device 20 (S22).

[0099] When the management device 20 receives PVC discharge request data from the retail device 60, it determines whether the amount of energy stored in the energy storage device 30 is greater than the amount of energy included in the PVC discharge request data. If the amount of energy stored is greater than the amount of energy included in the PVC discharge request data, it notifies the energy storage device 30 of an instruction to supply green power (S23). The energy storage device 30 then supplies the stored green power to the power grid.

[0100] On the other hand, if the power bank PB's energy storage device 30 does not have a storage capacity greater than the amount of electricity included in the discharge request transmitted from the consumer device 50, the power bank PB will supply the green electricity stored in the energy storage device 30 to the power grid and will also notify the power generator FFPP of a power supply instruction to supply a portion of the electricity (the amount of electricity obtained by subtracting the amount of green electricity that can be supplied from the energy storage device 30 from the amount of electricity included in the discharge request) as an alternative.

[0101] As shown in Figure 19, customer C transmits PVC discharge request data from customer device 50 to retailer device 60 (S31). When retailer PR's retailer device 60 receives the PVC discharge request data from customer device 50, it transmits the PVC discharge request data to the power bank PB's management device 20 (S32).

[0102] When the management device 20 receives PVC discharge request data from the retailer device 60, it determines whether the amount of energy stored in the energy storage device 30 is greater than the amount of energy included in the PVC discharge request data. If the amount of energy stored is not greater than the amount of energy included in the PVC discharge request data, it notifies the energy storage device 30 of a green power supply instruction (S33) and also notifies the power generator FFPP of a supply instruction for fossil fuel-derived electricity for a portion of the amount of energy (S34). When the power generator device 70 receives a power supply instruction for fossil fuel-derived electricity, it supplies the fossil fuel-derived electricity included in the power supply instruction to the power grid from the fossil fuel-derived power generation device 73 (S35).

[0103] As described above, in this embodiment 3, when the power trading system receives a discharge request from a consumer C via the retailer PR, the power bank PB, if the energy storage device 30 has a storage capacity greater than the amount of energy included in the discharge request, will supply the entire amount of energy included in the discharge request as green power from the energy storage device 30 to the power grid. If the energy storage device 30 does not have a storage capacity greater than the amount of energy included in the discharge request, the power bank PB will supply green power from the energy storage device 30 to the power grid and instruct the power generator FFPP to supply a portion of the amount of energy that is insufficient to be supplied as green power.

[0104] <Variation> By the way, while embodiments 1, 2, and 3 described above explain the case where PVC trading is applied to a server-client model, the present invention is not limited to this, and can also be implemented as a distributed system on Ethereum®, for example. In this case, it is sufficient to configure the system to be automatically executed on each device using smart contracts®.

[0105] In the above embodiment 3, the management device 20 instructs the energy storage device 30 to supply the stored green power to the power grid, thereby supplying the amount of power included in the discharge request to the power grid. However, the present invention is not limited thereto, and the management device 20 may also instruct the energy storage device 30 and / or the green power generation device (40) to supply the amount of power included in the discharge request to the power grid.

[0106] The configurations illustrated in the above embodiments are functional schematics and do not necessarily have to be physically represented as shown. In other words, the distributed and integrated forms of each device are not limited to those shown, and all or part of them can be functionally or physically distributed and integrated in any unit according to various loads and usage conditions. [Industrial applicability]

[0107] The power trading system and power trading method according to the present invention are suitable for promoting GX (Ground Energy Exchange). [Explanation of Symbols]

[0108] 20 Management device 21 Display section 22 Input section 23 Communication I / F Section 24 Memory section 24a PVC data 24b Energy storage data 24c Return Power Data 25 Control Unit 25a Order Processing Unit 25b PVC Production Processing Unit 25c discharge request processing unit 25d Power supply instruction section 25e Power Generation Instruction Unit 25f Energy Storage Monitoring Processing Unit 25g Green Power Return Instruction Section 30 Energy storage devices 40 Green power generation equipment 50 Consumer equipment 51 Display section 52 Input section 53 Communication I / F Section 54 Memory section 54a PVC data 55 Control Unit 55a Purchasing Processing Unit 55b PVC Data Reception Processing Unit 55c Discharge Request Processing Unit 59 factories 60 Retailer Equipment 61 Display section 62 Input section 63 Communication I / F Section 64 Memory section 64a Order Data 64b PVC data 65 Control Unit 65a Order Processing Section 65b Order Processing Section 65c PVC Data Reception Processing Unit 65d PVC Data Transmission Processing Unit 65e Discharge Request Processing Unit 65e 70 Power generation equipment 71 Display section 72 Input section 73. Fossil fuel-derived power generation devices 74 Communication I / F Section 75 Memory section 75a Alternative Power Data 76 Control Unit 76a Power supply instruction processing unit 76b Power return processing unit 80 Management device 84 Memory section 84a Returned Power Consumption Data 85 Control Unit 85a Returned Power Consumption Ratio Calculation Unit C Consumer FFPP power producers PB Power Bank PR Retailer PVC Power Asset Certificate Information

Claims

1. A power trading system in which a consumer device (50) owned by a consumer, a power generator device (70) that controls a fossil fuel-derived power generation device (73) that generates electricity derived from fossil fuels, and a management device (20) that manages a green power generation device (40) that generates green electricity obtained from renewable energy and a storage device (30) that stores the electricity generated by the green power generation device (40) are connected on a predetermined blockchain, The aforementioned control device (20) When a valuable asset as payment for electricity is received from the consumer device (50), the process of issuing electricity asset certificate information to guarantee the supply of a first amount of electricity corresponding to the valuable asset is performed, When the consumer device (50) receives a request to discharge the first amount of electricity based on the electricity asset certificate information, and the energy storage device (30) has an amount of electricity greater than or equal to the first amount of electricity stored in it, a first control is performed to supply the green electricity of the first amount of electricity stored in the energy storage device (30) to the power grid. When the consumer device (50) receives a request to discharge the first amount of electricity based on the electricity asset certificate information, if the energy storage device (30) does not have the first amount of electricity stored, a second control is provided which instructs the power generator device (70) to supply the green electricity of the second amount of electricity stored in the energy storage device (30) to the power grid, and to supply fossil fuel-derived electricity from the power generator device (70) to the power grid as a substitute for the deficit amount of electricity that makes up the difference between the first amount of electricity and the second amount of electricity. If the green electricity for the amount of the power shortage supplied to the power grid by the power generation operator's equipment (70) is stored in the energy storage device (30), a third control is established to control the energy storage device (30) and / or the green electricity generation device (40) to return the green electricity corresponding to the amount of power shortage stored in the energy storage device to the power generation operator's equipment (70). A power trading system characterized by having smart contracts that automatically execute [something].

2. The aforementioned power asset certificate information is, The electricity trading system according to claim 1, characterized in that it has a value storage function for storing the value of an amount of electricity equivalent to the aforementioned valuable asset, a value scale function for exchanging it for the aforementioned valuable asset, and a value scale function for indicating a measure of the value of the amount of electricity, and is information that can be used as a representation equivalent to money on a predetermined network.

3. The aforementioned smart contract is The power trading system according to claim 1, characterized in that, when the economic value of the first amount of electricity derived from fossil fuels generated by the fossil fuel-derived power generation device (73) exceeds the economic value of the second amount of electricity generated by the green power generation device (40), which is a premium state for fossil fuel-derived electricity, a fourth control is automatically executed to control the energy storage device (30) and / or the green power generation device (40) to return the differential amount of electricity which is the difference between the economic value of the first amount of electricity and the economic value of the second amount of electricity.

4. The aforementioned smart contract is The power trading system according to claim 1, characterized in that when the power asset certificate information is issued, if the valuable asset is received from the consumer device (50), the power storage device (30) does not have green electricity equivalent to the valuable asset stored therein, and the power asset certificate information is issued to guarantee the supply of an amount of electricity equivalent to the valuable asset.

5. The aforementioned green electricity is A power trading system according to any one of claims 1 to 4, characterized in that the electricity is obtained from renewable energy sources such as solar, wind, hydro, geothermal, and biomass.

6. A method for trading electricity in an electricity trading system in which a consumer device (50) owned by a consumer, a power generator device (70) that controls a fossil fuel-derived power generation device (73) that generates electricity derived from fossil fuels, and a management device (20) that manages a green power generation device (40) that generates green electricity obtained from renewable energy and a storage device (30) that stores the electricity generated by the green power generation device (40) are connected on a predetermined blockchain, When the smart contract automatically executed by the management device (20) receives a valuable asset as payment for electricity from the consumer device (50), the smart contract includes an issuance processing step of issuing electricity asset certificate information to guarantee the supply of a first amount of electricity corresponding to the valuable asset, When the smart contract receives a request from the consumer device (50) to discharge the first amount of electricity based on the electricity asset certificate information, if the energy storage device (30) has an amount of electricity greater than or equal to the first amount of electricity stored in it, it performs a first control step of controlling the smart contract to supply the green electricity of the first amount of electricity stored in the energy storage device (30) to the power grid, When the smart contract receives a request from the consumer device (50) to discharge the first amount of electricity based on the electricity asset certificate information, if the energy storage device (30) does not have the first amount of electricity stored, it provides a second control step instructing the power generator device (70) to supply the green electricity of the second amount of electricity stored in the energy storage device (30) to the power grid, and to supply fossil fuel-derived electricity from the power generator device (70) to the power grid as a substitute for the deficit amount of electricity that makes up the difference between the first amount of electricity and the second amount of electricity. The smart contract includes a third control step in which, once the green electricity for the amount of the power shortage supplied to the power grid by the power generator equipment (70) has been stored in the energy storage device (30), the energy storage device (30) controls the energy storage device (30) and / or the green electricity generation device (40) to return the green electricity corresponding to the amount of power shortage stored in the energy storage device to the power generator equipment (70). A method for trading electricity, characterized by including the following:

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