Value certification system and value certification method for electricity trading

Abstract

To construct a highly reliable P2 power transaction platform by evaluating and certifying an appropriate environmental value depending on when, where, by whom and what electric power generation method power distributed in a power transaction related to reusable energy is generated.SOLUTION: A power transaction platform includes: a smart meter 41 for measuring electric energy generated or consumed by each user to generate result data; an environmental value calculation unit 26c for calculating a power value on the basis of electric energy for each power use period and its power generation method and calculating an environmental value being a contribution degree of power generation to an environment; a power tracking unit 25b for tracking a power transmission / distribution route to a sending destination; and an exchange value calculation unit 26a for recording a tracking result in each prescribed power use period in association with a power value and an environmental value relating to power consumed at each sending destination, acquiring a power value and an environmental value corresponding to power for an arbitrary power use period, and calculating a corresponding exchange value.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a value proving system and a value proving method for electricity trading in which a plurality of user systems that control and manage electricity for each unit of electricity consumption are connected to an exchange system that buys and sells electricity via a communication network. [Background technology]

[0002] In recent years, an international initiative called RE100 has emerged, which aims for companies to cover 100% of the electricity used in their own operations with renewable energy, with companies from around the world and Japan participating. RE100 is an international corporate alliance whose members are working to generate 100% of the electricity they use from renewable energy sources, and it aims to significantly expand the demand and supply of renewable energy.

[0003] In addition, in Japan, FIT (Feed-in Tariff), a "Fit-in Tariff system for renewable energy," was established in 2012, which promoted the spread of power generation from renewable energy sources by requiring electric power companies to purchase electricity generated from renewable energy sources such as solar, wind, hydroelectric, geothermal, and biomass power for a certain period of time. However, although the purchase period varies depending on the power generation method and amount of power, many power generation facilities have begun to reach the end of their purchase period, known as "post-FIT," since November 2019, and ways to effectively utilize such power generation facilities after the end of FIT are being explored.

[0004] On the other hand, there is known an electricity trading system that allows users to share surplus electricity, including renewable energy, between themselves (see, for example, Patent Document 1). By utilizing electricity trading that allows users to share electricity between themselves, when surplus electricity is generated at post-FIT power generation facilities during a specific time period when electricity is needed by RE100 member companies and the like, so-called P2P (Peer-to-Peer) electricity trading can be carried out by matching the corresponding combinations, and it is possible to effectively utilize post-FIT power generation facilities while complying with the international initiative of RE100. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2011-227837 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in P2P electricity trading, the environmental value of the electricity varies depending on when, where, who, and how it was generated, even if it is the same electricity. Therefore, there is a need to build a reliable P2P trading platform where value can be properly assessed and certified.

[0007] In view of the problems with the conventional technology, the object of the present invention is to provide a value certification system and a value certification method for electricity trading that can build a reliable P2P energy trading platform by evaluating and certifying the appropriate environmental value of electricity circulating in renewable energy electricity trading based on when, where, who, and by what power generation method it was generated. [Means for solving the problem]

[0008] In order to solve the above problems, the value proof system for electricity trading of the present invention comprises a plurality of user systems which control and manage electricity for each unit of electricity consumption; a performance data generation unit in each user system which measures the amount of electricity generated or consumed by each user during each electricity usage period and generates performance data; an environmental value calculation unit which calculates an electricity value based on the amount of electricity and the generation method during each electricity usage period based on the performance data, and calculates an environmental value which is the contribution of the electricity generation related to that electricity to the environment; and a power tracking unit which tracks the electricity transmission and distribution route from each user system to another user system which is the destination of the electricity. electric power The system is characterized by comprising a tracking result recording unit which records the tracking results for each specified power usage period by the tracking unit in association with the power value and environmental value related to the power consumed in each user system as a destination, and an exchange value calculation unit which refers to the tracking result recording unit based on an arbitrary power usage period in the user system as a destination, obtains the power value and environmental value corresponding to the power in the arbitrary power usage period, and calculates an exchange value corresponding to the amount of power in the arbitrary power usage period.

[0009] The method for proving value in electricity trading of the present invention further comprises the steps of: (1) a power control and management step of controlling and managing power in a user system for each unit of power consumption; (2) a performance data generating step in which, in the user system, a performance data generating unit measures the amount of power generated or consumed by each user during each power usage period and generates performance data; (3) an environmental value calculation step in which an environmental value calculation unit calculates an electricity value based on the amount of electricity in each electricity usage period and the electricity generation method thereof based on the performance data, and calculates an environmental value that is the contribution of the electricity generation related to that electricity to the environment; (4) a power tracking step in which a power tracking unit tracks a power transmission / distribution path from each user system to another user system that is a destination; (5) electric powera tracking result recording step in which a tracking result recording unit records the tracking result for each predetermined power usage period by the tracking unit in association with the power value and the environmental value related to the power consumed in each user system as a transmission destination; (6) an exchange value calculation step in which the exchange value calculation unit refers to the trace result recording unit based on an arbitrary power usage period in the user system as the destination, acquires the power value and the environmental value corresponding to the power in the arbitrary power usage period, and calculates an exchange value corresponding to the amount of power in the arbitrary power usage period; The present invention is characterized by comprising:

[0010] In the above invention, it is preferable to further include a token issuing unit that issues a token corresponding to the environmental value calculated by the environmental value calculation unit, and a point exchange management unit that converts the token issued by the token issuing unit into value information corresponding to the exchange value calculated by the exchange value calculation unit based on the current value at the time of issuance of the token.

[0011] In the above invention, it is preferable that the invention further includes a token management unit that records data regarding the issuance and redemption of energy trading tokens in cooperation with a guarantee system that stores at least a portion of the data regarding the issuance and redemption of energy trading tokens and environmental value tokens, and that the token management unit aggregates data stored by multiple nodes constituting the guarantee system at a predetermined timing and blocks the data, forms a blockchain using the blocks, and shares the blockchain among the multiple nodes and stores it as a distributed ledger.

[0012] In the above invention, it is preferable that the token management unit further has a function of generating information regarding the transfer included in the transfer request related to the depreciated environmental value token as a transfer history, and recording the transfer history in cooperation with the guarantee system. Effect of the Invention

[0013] According to the present invention, the power value is calculated based on the amount of power and the generation method of the power, the environmental value which is the contribution of the power generation to the environment is calculated, the transmission and distribution route from the user system which is the source of the power to another user system which is the destination of the power is traced, the tracing result is associated with the power value and the environmental value of the power consumed in each destination user system and managed, and an exchange value corresponding to the amount of power in any power usage period can be calculated. As a result, according to the present invention, the environmental value based on the origin of each power is properly evaluated and certified based on the time, place and generation method of the power, and financial resources such as rewards from the consumer side such as RE100 member companies can be properly distributed to prosumers who create environmental value by self-consuming renewable energy, and a highly reliable P2P energy trading platform can be constructed. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a conceptual diagram illustrating energy trading in an energy trading system according to an embodiment. [Diagram 2] 1 is a conceptual diagram illustrating an overall energy trading system according to an embodiment. FIG. [Diagram 3] 2 is a block diagram showing an internal configuration of a power control terminal according to the embodiment; FIG. [Figure 4] 1 is a block diagram showing an internal configuration of an energy trading platform according to an embodiment. FIG. [Diagram 5] FIG. 2 is a block diagram showing the internal configuration of a digital currency blockchain management server according to an embodiment. [Figure 6] FIG. 1 is a flow diagram showing a procedure when a token is used as environmental value compensation in an energy trading system according to an embodiment. [Figure 7] FIG. 1 is a flow diagram showing a procedure for exchanging tokens for points in an energy trading system according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, with reference to the accompanying drawings, an embodiment of a value proof system and a value proof method for energy trading according to the present invention will be described in detail. Note that the embodiment shown below is an example of an apparatus for embodying the technical idea of ​​the present invention, and the technical idea of ​​the present invention does not specify the material, shape, structure, arrangement, etc. of each component part as described below. The technical idea of ​​the present invention can be modified in various ways within the scope of the claims.

[0016] Fig. 1 is a conceptual diagram showing power trading in the power trading system according to the present embodiment. As shown in the figure, in this embodiment, surplus power, including renewable energy, generated at the power generation facilities of a post-FIT prosumer Ua1 and a power generation company Ua2 is traded with RE100 member companies Ub1 and Ub2 in a so-called P2P (Peer-to-Peer) manner. For example, the post-FIT prosumer Ua1 includes all power generation facilities whose FIT (abbreviation for Feed-in Tariff) purchase period has expired, including solar power plants, wind power plants, power prosumers, and other consumers equipped with power generation facilities.

[0017] In this embodiment, environmental value is calculated based on when, where, who, and by what power generation method the electricity was generated, or on the self-consumption of renewable energy, etc., and is generated along with the generated electricity. The compensation for the environmental value generated by the post-FIT prosumer Ua1 is sent from the RE100 member company Ub2 that purchased the electricity to which the environmental value is related to the post-FIT prosumer Ub1, etc. that generated the electricity and environmental value.

[0018] Digital currency (tokens) can be used to pay for this. This digital currency is exchanged through the digital currency blockchain management server 6, which serves as a token trading platform. It can also be used for token trading, converted into points through a points provider 8, or exchanged for cash, and used for cashback, etc.

[0019] More specifically, the energy trading platform 2 records and holds environmental value, which is value information according to the degree of contribution to the environment by power control such as the power generation method, power storage method, and self-consumption of each power for self-consumption of renewable energy and surplus power that can be sold. When the token is used to pay for the power fee or environmental value, the energy trading platform 2 evaluates and certifies the amount (value) of digital currency that the power fee or environmental value is equivalent to. The value of this environmental value is calculated according to the degree of contribution to the environment, such as the amount of self-consumption of power or the amount of CO2 reduction. The certification of this environmental value is issued as file data for something similar to a certificate, such as a "tracked environmental value" in which attribute information of the power source (power generation method) is certified.

[0020] The digital currency as compensation for this environmental value is sent to the post-FIT prosumer Ua1, etc. side through the energy trading platform 2. This sent digital currency can be used for payment or exchanged like general virtual currency, and can also be converted into real exchange value such as points using a conversion service provided by a points provider 8, etc. For example, when compensation for self-consumption of renewable energy is paid by a RE100 member company, etc., the digital currency is transferred from the RE100 member company to the post-FIT prosumer Ua1 and power generation company Ua2 through the energy trading platform 2.

[0021] The digital currency transferred to the post-FIT prosumer Ua1 and power generation company Ua2 can be exchanged for points that can be used in real life by the post-FIT prosumer Ua1 and power generation company Ua2, or can be converted into cash or used for cash back, etc. Meanwhile, RE100 member companies that have acquired the environmental value can obtain the environmental value associated with the purchased electricity as "tracked environmental value" with verified attribute information of the power source (power generation method), for example, and use the purchased electricity for RE100 initiatives.

[0022] (Overall configuration of the energy trading system and its value proof system) 2 is a conceptual diagram showing the overall configuration of an energy trading system and its value certification system according to this embodiment. As shown in the figure, in this embodiment, a value certification system is incorporated in an energy trading system 1, and a value certification service is provided as part of an energy trading service. In this embodiment, an intermediation service for energy trading is carried out through the energy trading system 1 constructed on a communication network 3, and a service of certifying the value of the electricity related to the trading is provided by the value certification system included in the energy trading system 1.

[0023] Specifically, in this energy trading system 1, each facility (power plant, consumer, aggregator, etc.) has an energy control terminal which is provided therein, and accesses the energy trading platform 2 to trade energy. When trading energy, in addition to tracking the transmission and distribution of energy, the energy trading platform 2 also tracks value information relating to DR (Demand Response) control and environmental value, and energy and environmental value are exchanged between the seller and buyer to complete a buying and selling transaction of energy and its environmental value, and the transmission and distribution of energy is tracked to certify the energy and its environmental value.

[0024] As shown in Fig. 2, the energy trading system 1 is configured by an energy trading platform 2 and energy control terminals 40 provided in each facility (power plant, PPS, consumer, energy prosumer, etc.), which are interconnected via a communication network 3. In addition, a digital currency blockchain management server 6 that guarantees energy trading is provided on the communication network 3.

[0025] The power control terminal 40 is, for example, an information processing terminal equipped with a CPU, and is a device that comprehensively controls the equipment of each facility, such as a power plant, each consumer, PPS, power prosumer, and aggregator. Target equipment controlled by this power control terminal 40 includes devices that manage power generation, storage, and power consumption, such as a smart meter 41, a storage battery 42, and a PV (Photovoltaics: solar power generation) 43, which are included in a user system 4 installed in the facility of a consumer or power prosumer. Note that the various devices that are the target of control by this power control terminal 40 can be omitted as necessary. For example, the power consumption of a consumer is measured by a smart meter 41, but some consumers have power generation equipment and storage equipment, some have either power generation equipment or storage equipment, and some consumers have only a smart meter 41 without either power generation or storage equipment and only consume power. In addition, power prosumers are also in a position to consume power, but they can also be on the side of supplying power by having solar power generation and storage batteries.

[0026] The energy trading platform 2 is a content server device that mediates between the power seller and the power buyer in trading electricity via the power control terminal 40. This energy trading platform 2 provides an online intermediary website as an energy trading platform, and provides various token trading intermediary services to the power seller, the power buyer, and other markets and companies through the intermediary website.

[0027] By accessing this energy trading platform 2 from the energy control terminal 40, a trading service for various tokens can be used according to the power generation, storage, and consumption in each facility or equipment. In this token trading service, the issuance and sale of tokens by the seller Ua and the purchase and retirement of tokens by the buyer Ub, who is the power consumer, are managed. In detail, the energy control terminal 40 cooperates with the energy trading platform 2 to generate power generation data, storage data, and consumption data based on the power generation, storage, and consumption in each facility, and issues, buys, sells, and retires various tokens that describe information about the power. The information described in the various tokens and the history of the issuance, sale, and retirement of the tokens are stored in a non-falsifiable state in the distributed ledger system through the blockchain interface service provided by the digital currency blockchain management server 6.

[0028] In addition, the tokens that can be traded on the energy trading platform 2 can be exchanged for each other at an equivalent price based on the supply and demand balance of buying and selling transactions on the energy trading platform 2. Furthermore, various tokens can be converted into real currency, virtual currency, points, and other value information having exchange value through settlement.

[0029] The communication network 3 is an IP network using the communication protocol TCP / IP, and is a distributed communication network constructed by interconnecting various communication lines (public lines such as telephone lines, ISDN lines, ADSL lines, and optical lines, dedicated lines, third-generation (3G) communication methods such as WCDMA (registered trademark) and CDMA2000, fourth-generation (4G) communication methods such as LTE, and fifth-generation (5G) and later communication methods, as well as wireless communication networks such as Wifi (registered trademark) and Bluetooth (registered trademark). This IP network also includes LANs such as intranets (corporate networks) and home networks using 10BASE-T, 100BASE-TX, etc.

[0030] When electricity is generated at the power generation facilities of each post-FIT prosumer Ua1 and power generation company Ua2, the electricity transmission and distribution is tracked by linking information on origin such as the amount of electricity, power generation method, power generation location, and power generation time to the electricity trading platform 2, and furthermore, additional information such as environmental value and trading history including transfer history are also linked and recorded and maintained.

[0031] Environmental value is recorded as value information according to the contribution to the environment, such as the power generation method and storage method of the generated electricity. For example, value information as compensation for generating surplus electricity according to the economic effect of implementing power demand control (DR control) for self-consumption, etc. is recorded and stored as environmental value, and is used to prove the power value or environmental value.

[0032] In detail, environmental value is, for example, the amount of electricity consumed by a home or CO 2 It is calculated according to the degree of contribution to the environment, such as the amount of reduction, and is held as tracking information that records the date and time when the electricity was transmitted and distributed, the owner ID of the source of transmission and distribution, the new owner ID of the destination of transmission and distribution, the value (amount of value) at the time of transmission and distribution, and other transaction history. This tracking information for electricity and environmental value records the value and issuer of the transferred environmental value, and the destination of the transfer transaction is added as a transaction history each time a transfer occurs.

[0033] In addition, in the transactions of electricity and environmental value, digital currency can be used as a means of payment, and this digital currency can be bought and sold at a rate based on the value proven by the value proof service, or exchanged for value information that can be used in real life, such as points. The transfer of this digital currency and the exchange of points are recorded in an unalterable manner in the blockchain, which is a distributed ledger system, via the digital currency blockchain management server 6. Here, the digital currency related to the environmental value exchanged for points can be written off by erasing its exchange value as a currency, such as by setting its value to 0, erasing or making the private key unknown, and storing it in an account that cannot be rewritten by the owner. The transfer history of the environmental value related to the written off digital currency is also recorded in an unalterable manner in the blockchain, which is a distributed ledger system, via the digital currency blockchain management server 6.

[0034] One method of evaluating this environmental value is to increase the value of electricity generated by a generation type with a high contribution to the environment when it is stored in a storage type with a high contribution to the environment, based on the method of generating electricity and the type of generation or storage related to the consumed or stored electricity. For example, when electricity generated by a renewable energy source such as solar power generation is stored in a battery installed in an electric vehicle such as an EV truck and consumed, a synergistic effect is achieved between the environmental contribution of the renewable energy and the environmental contribution of the use of the electric vehicle, so that an environmental value can be assigned as an evaluation or the price can be increased. The degree of contribution to the environment (CO2) of these 2 The amount of energy reduction and self-consumption) is stored in the tracking information as origin information and other related information, and is also stored in the tracking management database 21c of the energy trading platform 2 and each node of the blockchain interface.

[0035] In addition, in the evaluation of the environmental value, for example, the actual value of controlling power over a certain period is calculated by analyzing the actual data, and the compensation amount is determined. In addition, the actual value of avoiding peak power consumption (peak cut) over a certain period is calculated, and when the peak cut falls below the maximum power set at the beginning of the month in which it was avoided, it means that the power fee has been overpaid, so the environmental value may be determined by treating the overpaid power fee as the economic effect. Information on this is held in the tracking information, and is also held in the token management database 21a of the energy trading platform 2 and each node of the blockchain interface.

[0036] (Configuration of each device) Next, the configuration of each device will be explained. Note that the term "module" used in the explanation refers to a functional unit that is configured with hardware such as a device or equipment, or software having the corresponding functions, or a combination of these, and that performs a specific operation.

[0037] (1) User System 4 The user system 4 is the general power equipment owned by each consumer or power prosumer such as the post-FIT prosumer Ua1 and the power generation business operator Ua2, and is also a unit of power consumption, and may include power generation and storage equipment. Examples of power generation equipment include solar power generation and wind power generation. This user system 4 includes a power control terminal 40 as a power buying and selling unit, and a smart meter 41 as a performance data generating unit.

[0038] The power control terminal 40 installed in each user system is an information processing terminal equipped with a communication function and a CPU, and various functions can be implemented by installing an OS or firmware and various application software, and in this embodiment, it functions as an electricity trading unit by installing and executing an application. This information processing terminal for the agent can be realized by a personal computer, for example, a smartphone, or a dedicated device with specialized functions, and includes a tablet PC, a mobile computer, and a mobile phone.

[0039] Specifically, as shown in Fig. 3, the power control terminal 40 includes a CPU 402, a memory 403, an input interface 404, a storage device 401, an output interface 405, and a communication interface 406. In this embodiment, these devices are connected via a CPU bus 400, and are capable of transferring data between them. The function of the power control terminal 40 as a power buying and selling unit includes, for example, generating selling data or buying data including a power supply period, an amount of power (quantity), and a price (selling price or purchase price) during a buying and selling period, which is a predetermined period (e.g., 24 hours) before the start of the power usage period.

[0040] The memory 403 and storage device 401 are devices that store data on a recording medium and read out the stored data in response to a request from each device, and can be configured, for example, with a hard disk drive (HDD), a solid state drive (SSD), a memory card, etc.

[0041] The input interface 404 is a module that receives control signals from each facility installed in the user system, and the received control signals are transmitted to the CPU 402 and processed by the OS and each application. On the other hand, the output interface 405 is a module that outputs control signals to each facility installed in the user system. Each facility installed in such a user system differs depending on the form of the consumer or prosumer. For example, in a consumer, power consumption is measured by a smart meter 41, and for power generation and storage, some have both photovoltaic power generation and storage equipment, some have either photovoltaic power generation or storage battery equipment, and some have neither power generation nor storage equipment. In a prosumer, power consumption is measured by a smart meter 41, and control signals for a photovoltaic power generation (PV) 42 and a storage battery 42 are input and output.

[0042] Here, the smart meter 41 is a performance data generating unit that comprehensively manages power generation, storage, and consumption within a user system, which is a unit of demand, and in addition to measuring power consumption at the consumer's home, it also controls and manages other equipment within the user system, such as storage batteries and solar power generation and storage, measures the amount of power generated, stored, or consumed by the consumer during each power usage period, generates performance data, and periodically transmits this data to the PPS, the power company, and the energy trading platform 2. This performance data is transmitted directly to the PPS, the power company, and the energy trading platform 2 via the Internet, telephone lines, dedicated lines, etc.

[0043] The communication interface 406 is a module for transmitting and receiving data with other communication devices, and communication methods include, for example, public lines such as telephone lines, ISDN lines, ADSL lines, and optical lines, dedicated lines, third-generation (3G) communication methods such as WCDMA (registered trademark) and CDMA2000, fourth-generation (4G) communication methods such as LTE, and fifth-generation (5G) and later communication methods, as well as wireless communication networks such as Wifi (registered trademark) and Bluetooth (registered trademark).

[0044] The CPU 402 is a device that performs various arithmetic processing required for controlling each unit, and executes various programs to virtually construct various modules on the CPU 11. An OS (Operating System) is started and executed on the CPU 402, and the basic functions of each power control terminal 40 are managed and controlled by this OS. In addition, various applications can be executed on this OS, and various functional modules are virtually constructed on the CPU by executing the OS program on the CPU 402.

[0045] In this embodiment, by executing a browser software on the CPU 402, information on the system is viewed and information is input through the browser software. In detail, the browser software is a module for viewing a Web page, and downloads HTML (HyperText Markup Language) files, image files, music files, etc. from the energy trading platform 2 through the communication network 3, analyzes the layout, and displays and plays them. The browser software also allows a user to use a form to send data to a Web server and to operate application software written in JavaScript, Flash, Java (registered trademark), etc., and each user can use the token trading intermediation service provided by the energy trading platform 2 through the browser software.

[0046] In this embodiment, a browser software is executed on the CPU 402, and an energy trading unit 402a is configured on the CPU 402 by accessing the energy trading platform 2 through the browser software. This energy trading unit 402a is a module that generates selling data or buying data of energy trading tokens. In addition, the browser software can access the transaction history providing unit 64a of the digital currency blockchain management server 6 to view information (contract data, selling data, buying data, etc.) related to the tokens involved in the transaction, thereby making it possible to view, for example, the generation method of the sold electricity and the transaction history of that electricity.

[0047] (2) Configuration of Energy Trading Platform 2 The energy trading platform 2 is a server device managed and operated by a provider of an energy trading intermediation service and an energy / environment value proof service, and a user who wishes to use the energy buying and selling transaction and value proof service can access the energy trading platform 2 through a communication network 3 and execute an energy transaction or receive a value proof via the energy trading platform 2 provided by the energy trading platform 2. Specifically, as shown in FIG. 4, the energy trading platform 2 includes a communication interface 23, an authentication unit 22, an energy trading execution unit 25, a token management database 21a, a user database 21b, a tracking management database 21c, an energy trading management database 21d, a token management unit 24, a value proof execution unit 26, a point exchange management unit 27, and a proof issuing unit 28.

[0048] The communication interface 23 is a module that transmits and receives data with other communication devices through the communication network 3, and in this embodiment is connected to each power control terminal 40 and smart meter 41, as well as to the point operator 8 and the digital currency blockchain management server 6 in order to provide power trading intermediation services and value proof services.

[0049] The authentication unit 22 is a computer or software having such a function that verifies the legitimacy of an accessing person involved in energy trading, and executes authentication processing based on a user ID that identifies the user. In this embodiment, the authentication unit 22 obtains a user ID and password from the terminal device of the accessing person via the communication network 3, and verifies the user ID and password against the user database 21b to confirm whether the accessing person has the right to access the energy trading site and whether the accessing person is the person in question.

[0050] The energy trade execution unit 25 is a module that mediates energy trades through the communication network 3, and in this embodiment includes a contract data generation unit 25a and an energy tracking unit 25b.

[0051] The contract data generating unit 25a generates contract data for a transaction that has been concluded based on the selling data and buying data in the energy transaction. In detail, the energy transaction executing unit 25 collates the buying data as the demand conditions of the RE100 member company Ub, which is the buyer, with the selling data as the supply possible conditions of the seller, such as the FIT-graduated prosumer Ua1, and concludes a transaction by matching the corresponding combinations, and generates contract data that describes the demand conditions and supply possible conditions of the concluded transaction, such as the supply source, power generation method, supply possible time, and power price. This contract data is stored in the energy transaction management database 21d as an energy transaction history, and is transferred to the energy tracking unit 25b.

[0052] The power tracking unit 25b is a module that tracks the power transmission and distribution route from each user system that is a power source (seller) to another user system that is a power destination (buyer). Specifically, based on the contract data of the power transaction, the power usage period, the power transmission source, the power generation method, the power transmission destination, the amount of power, and the power transmission and distribution route of the power for which the power transaction was concluded are recorded in the tracking management database 21c, and it is monitored whether or not the power transmission was actually performed during the usage period, and when the power transmission or reception was performed, it is recorded and stored in the tracking management database 21c as actual data.

[0053] Furthermore, the energy trading execution unit 25 has a cooperation processing function that requests the digital currency blockchain management server 6 on the network, which is a guarantee system, to carry out processes necessary for energy trading, such as credit related to energy trading, security management, and storage of transaction records, and cooperates with the digital currency blockchain management server 6 to proceed with the processing. Through this function, the energy trading execution unit 25 cooperates with the digital currency blockchain management server 6 to manage the exchange of various tokens, add public addresses related to token acquirers, and transfer each ownership by changing the owner of the various rights certified by each token.

[0054] The token management unit 24 is a module that executes and manages the generation of tokens (digital currency) and issues, transfers, and amortization instructions to the digital currency blockchain management server 6 to issue, transfer, or amortize various tokens through a linking function with the guarantee system. Specifically, the token management unit 24 includes a token issuance instruction unit 24a, a token amortization instruction unit 24b, and a token transfer instruction unit 24c.

[0055] The token issuance instruction unit 24a is a module that issues digital currency to a user in response to a purchase request from the user. For example, it issues new purchase tokens to companies that wish to purchase electricity or environmental value, sells tokens according to value information according to the contribution to the environment of the power generation method and storage method of the electricity generated by the electricity seller by analyzing the performance data of the electricity seller, and sells tokens according to the economic effect of implementing power demand control (DR control) such as self-consumption.

[0056] In this embodiment, the token issuance instruction unit 24a is configured to issue a token 2The token issuing unit 24a issues a token according to the environmental value based on the reduction amount or the self-consumption amount. For example, when the power generation method included in the performance data is a renewable energy such as solar power generation or wind power generation, the token issuing unit 24a issues a token according to the environmental value based on the reduction amount or the self-consumption amount. 2 A list of the corresponding amounts of CO 2 The reduction table data is stored, and the CO reduction is calculated based on the amount of power generation included in the actual data. 2 The reduction table data is referenced to determine the value and quantity of tokens for the environmental value, and digital currency of the determined value or quantity is issued.

[0057] In addition, for example, when the power generation method included in the performance data is based on renewable energy such as solar power generation or wind power generation, and the power is self-consumed, the token issuance instruction unit 24a may calculate the amount of CO2 reduction due to the self-consumption. 2 The system holds self-consumption table data that lists the amount of self-consumption included in the performance data and its correspondence with the amount of energy lost due to transmission and distribution.The system refers to the self-consumption table data based on the amount of self-consumption included in the performance data to determine the value and quantity of tokens for environmental value, and issues digital currency environmental value tokens of the determined value or quantity.

[0058] The token expiration instruction unit 24b is a module that expires energy trading tokens based on performance data and expires digital currency related to a transfer request. Here, expiration of a token refers to a process of erasing the exchange value as a currency, such as setting the value to 0, erasing or obscuring the private key, and storing the token in an account that cannot be rewritten by the owner.

[0059] The token transfer instruction unit 24c is a module that controls the transfer of tokens by rewriting the ownership of each token, and in this embodiment, a blockchain interface service is used for this rewriting. The token transfer is executed based on a transfer request that instructs the transfer. The transfer request is data that is input from the energy trading execution unit 25 when a token is traded in the energy trading execution unit 25 or the like, or is input directly from the energy control terminal 40 by the operation of each user, and includes the type of token to be transferred, account information related to the transfer source and transfer destination, and the quantity.

[0060] In particular, when the input transfer request is a request for the transfer of digital currency, the token transfer instruction unit 24c has a function of transferring the energy trading token related to the request when the target of the transfer request is an energy trading token, and having the token retirement instruction unit 24b retired the digital currency related to the request when the target of the transfer request is digital currency, and generating information on the transfer included in the transfer request related to the retired digital currency as a transfer history. The transfer history related to the retired digital currency is recorded in an unalterable manner in the digital currency blockchain 6, which is a guarantee system, via the energy trading platform 2.

[0061] Furthermore, the token management unit 24 has a cooperation processing function that requests the digital currency blockchain management server 6 on the network, which is a guarantee system, to carry out processes necessary for energy trading, such as credit for energy trading, security management, and storage of transaction records, and cooperates with the digital currency blockchain management server 6 to proceed with the processing. Through this function, the energy trading execution unit 25 cooperates with the digital currency blockchain management server 6 to manage the exchange of various tokens, add public addresses related to token acquirers, and transfer each ownership by changing the owner of each token.

[0062] The token management database 21a is a storage device that accumulates information about issued and written-off tokens, and accumulates information about each token in association with its owner, type, and value or quantity. In addition, related information about each token, such as a transaction history, is also recorded in association with each token. For example, a transfer history issued when transferring digital currency is recorded in association with the source digital currency that has been transferred and has a value of 0.

[0063] The user database 21b is a storage device that accumulates information on each consumer user and businesses such as aggregators. In this embodiment, personal information identifying the user is not accumulated in the user database 21b, and only public account information identifying each resident and user is stored. The credit information required for energy trading is evaluated based on the response to a request for credit for the public accounts belonging to each resident made to the digital currency blockchain management server 6.

[0064] The tracking management database 21c is a storage device that collects, accumulates, and manages performance data from power plants, consumers, aggregators, and other parties involved in the transfer of electricity. Each performance data received from each smart meter is accumulated in this performance management database and used for token issuance, retirement, and value evaluation. The electricity trading management database 21d is a storage device that records token trading performance.

[0065] At least a portion of the data stored in each of these databases 21a to d is recorded in the digital currency blockchain management server 6 through the guarantee system linking function of the token management unit 24. The digital currency blockchain management server 6 aggregates and blocks at least a portion of the data stored in each of the databases 21a to d at a predetermined timing in the nodes, forms a blockchain using the blocks, and shares this blockchain among multiple nodes and stores it as a distributed ledger.

[0066] The value proof execution unit 26 is a module that determines and proves the value of the electricity and the environmental value related to the electricity based on tracking information such as the power generation method, the electricity transmission / distribution route (source to destination), and the time (period) of transmission / distribution of the electricity tracked by the electricity tracking unit 25b. Specifically, it includes an exchange value calculation unit 26a, a token value acquisition unit 26b, and an environmental value calculation unit 26c.

[0067] The environmental value calculation unit 26c is a module that analyzes the measured value of the amount of electricity generated or consumed by each user during each electricity usage period, the power generation data indicating the power generation method and the user who generated the electricity, or the electricity storage data regarding the amount of stored electricity and its storage period, which are included in the performance data. The token management unit 24 issues or redeems energy trading tokens, or issues energy trading tokens and digital currency, based on the analysis results by the exchange value calculation unit 26a.

[0068] Furthermore, the performance data includes the type of power generation or storage related to the consumed power, and the environmental value calculation unit 26c analyzes the performance data to extract the state in which power generated by a power generation type with a high contribution to the environment is stored in a power storage type with a high contribution to the environment, calculates the amount of power and time period, and evaluates the environmental value. The token issuance instruction unit 24a increases the value of the digital currency when power generated by a power generation type with a high contribution to the environment is stored in a power storage type with a high contribution to the environment based on the analysis result of the performance data by the exchange value calculation unit 26a.

[0069] The exchange value calculation unit 26a is a module that calculates the exchange rate according to the current value of each electricity and token, and refers to the tracking management database 21c, the electricity trading management database 21d, and the token management database 21a to obtain information regarding the value of each electricity at the time of transmission and the current value of the digital currency involved in the exchange, and calculates the exchange rate.

[0070] The point exchange management unit 27 is a module that sends instructions to the point business operator as proof of value to exchange various tokens for points or convert them into cash based on the exchange rate calculated by the exchange value calculation unit 26a. This point exchange management unit 27 also has a function of acquiring the amount of digital currency exchanged when exchanging points, and depreciating the amount of digital currency equivalent to the exchanged amount (amount) of the digital currency.

[0071] The proof issuing unit 28 is a module that issues, as file data for certificate-like things such as a "tracked environmental value" that is a proof of value for transmitted and distributed electricity based on the environmental value calculated by the environmental value calculation unit 26c of the value proof execution unit 26. In more detail, it issues a "tracked environmental value" that evaluates and proves how much of a quantity (value) of digital currency the environmental value, which is value information according to the contribution to the environment by power generation method, power storage method, and power control such as self-consumption of each power for self-consumption of renewable energy and surplus power that can be sold, is equivalent to.

[0072] This "tracked environmental value" includes, for example, the amount of electricity consumed by the home and CO 2 The value of the environmental value calculated according to the degree of contribution to the environment, such as the amount of reduction, is recorded, and tracking information that certifies the attribute information of the power source (power generation method) is associated with the electricity related to that environmental value, and this tracking information links and records the transmission and distribution route from the user system that is the source of electricity (the seller in the electricity transaction) to another user system that is the destination of electricity (the buyer), as well as the period of electricity usage, the source of electricity, its power generation method, the destination of electricity, and the amount of electricity. This "tracked environmental value" is generated in response to a request from, for example, a RE100 member company that is the buyer, and transmitted in file format.

[0073] (3) Configuration of digital currency blockchain management server 6 As described above, in this embodiment, a digital currency blockchain management server 6 is provided between the power control terminals 40 on the power selling side and the power buying side that conduct power trading via various tokens, and guarantees power trading and token trading. Specifically, as shown in FIG. 5, the digital currency blockchain management server 6 includes a communication interface 63, an authentication unit 62, a token trading execution unit 64, a token trading history database 61a, a key information database 61b, and an account database 61c.

[0074] The communication interface 63 is a module that transmits and receives data to and from other communication devices through the communication network 3, and in this embodiment, is connected to each energy trading platform 2 and each power control terminal 40. The authentication unit 62 is a computer that verifies the legitimacy of an accessor or software having that function, and executes authentication processing based on a user ID that identifies each user. In this embodiment, the authentication unit 62 obtains a public address, public key, user ID, password, etc. unique to the user from the accessor's power control terminal 40 through the communication network 3, and collates the information with the key information database 61b to confirm whether the accessor has the right to access the system and whether the accessor is the person in question.

[0075] The token transaction execution unit 64 is a module that handles energy trading tokens that tokenize the right to sell or consume electricity as a virtual coin, and digital currency or DR tokens that are added value derived from the energy trading tokens and are derived from the energy generation method or storage method of each electricity. Each of these various tokens is linked to the public account of its legitimate owner, and it is possible to prove that one is a legitimate owner of the token by presenting the relationship of the public account. Also, only the legitimate owner can carry out transfer procedures such as assignment of the token. In this embodiment, the token transaction execution unit 64 includes a guarantee system linking function, a public address management unit 64b, a validity verification unit 64c, and a data update unit 64d.

[0076] The guarantee system cooperation function is a module that cooperates with other service provider devices, such as the energy trading platform 2, to carry out processes related to token trading, such as credit for energy trading, security management, trading records, and storage of service history, upon request from those devices. In this embodiment, the guarantee system cooperation function provides information such as trading prices of various tokens to the energy trading platform 2.

[0077] The public address management unit 64b functions as an address issuing unit that issues public addresses generated from a public key in a public key cryptosystem to identify a specific user, and private keys that can be paired with the public keys to identify the public keys and are used for electronic signatures for energy transactions via the public addresses. These issued public addresses and their associated key information are stored in a key information database 61b.

[0078] The validity verification unit 64c is a module that verifies that various tokens related to token transactions or energy transactions belong to the current owner through legitimate transactions and have not been tampered with. It can confirm the validity of the token using the public key of the current owner linked to a public account, and it accumulates all transactions related to the token in the token transaction history database 61a, and can verify the validity by comparing the token transaction history database 61a based on the public key.

[0079] The data update unit 64d is a module that acquires power information related to various tokens, adds a public address related to a new token owner, and changes the token owner certified in the distributed ledger, thereby transferring the ownership of the token. The data update by the data update unit 64d is protected by a high level of security, and double transfer and tampering of transaction history are firmly prevented.

[0080] (Operation of the Energy Trading System and Its Value Proof System) By operating the energy trading system and its value proof system described above, a value proof service for energy trading can be provided. Fig. 6 is a sequence diagram showing the procedure for receiving a value proof service for electricity purchased in an energy trading service, and Fig. 7 is a sequence diagram showing the procedure for the value proof service when exchanging points. Note that the processing procedure described below is merely an example, and each process may be modified as much as possible. Also, steps may be omitted, replaced, or added to the processing procedure described below as appropriate depending on the embodiment.

[0081] As shown in Fig. 6, when a RE100 member company Ub1 or the like receives a value proof service for electricity purchased, the user system of the RE100 member company Ub1 that wishes to receive the proof measures the necessary power generation, storage, and power consumption according to the equipment of each user system (S101). Based on this measurement, power generation data, storage data, and power consumption data are generated (S102), and these data are collected by the smart meter 41 of the RE100 member company Ub1 and reported to the energy trading platform 2 as actual data (S103). The actual data collected from each user system is collected for each user system in the energy trading platform 2 (S201).

[0082] Next, a token usage request is sent from the user system of RE100 member company Ub1 to the energy trading platform 2, informing the energy trading platform 2 that the token will be used as compensation for environmental value (S104). The energy trading platform 2, which receives this token usage request (S202), analyzes the power generation data, power storage data, and power consumption data included in the received token usage request (S203), and collects market information such as the purchase prices and sales prices of electricity related to various power generation methods in the market (S204).

[0083] Then, the power tracking result is referenced (S205) and the environmental value is calculated (S206). Specifically, when the power generation method included in the performance data is based on renewable energy such as solar power generation or wind power generation, the environmental value calculation unit 26c calculates the CO 2 By referring to the reduction table data, the environmental value and the value and amount of digital currency corresponding to that value are calculated, and the token transfer instruction unit 24c instructs the digital currency blockchain management server 6 to issue digital currency of the calculated value or amount. The issued digital currency is accumulated in the digital currency pool as the property of the power generator included in the performance data.

[0084] Also, for example, in step S206, when the power generation method included in the performance data is a renewable energy such as solar power generation or wind power generation, and the power is self-consumed, the token issuance instruction unit 24a refers to the self-consumption table data based on the self-consumption amount included in the performance data, determines the value and amount of the digital currency, and issues the determined value or amount of digital currency. The issued digital currency is sent to the RE100 member company Ub1. In practice, the ownership of the digital currency is rewritten to the name of the RE100 member company Ub1, and the digital currency is processed to be stored in the user's account and recorded in the digital currency blockchain management server 6 (S207). After that, the energy trading platform 2 notifies the user system of the completion of token issuance, and the token issuance completion process is executed on the user system side (S105).

[0085] The issued digital currency can be paid by RE100 member company Ub1 to the graduated FIT prosumer Ua1, etc., as compensation for environmental value. In this case, in order to send the digital currency issued to RE100 member company Ub1 to the graduated FIT prosumer Ua1, etc., the ownership of the digital currency is changed from RE100 member company Ub1 to the graduated FIT prosumer Ua1, etc., and processing is performed to store it in the user's account and recorded in the digital currency blockchain management server 6.

[0086] Next, a procedure for exchanging the digital currency received as compensation for environmental value by the graduated FIT prosumer Ua1 etc. into points will be described. As shown in Fig. 7, first, when a point exchange request sent from the graduated FIT prosumer Ua1 etc. is received by the point business operator (S501 and S401), a value proof request is sent from the point business operator to the exchange value calculation unit 26a of the energy trading platform 2 (S402).

[0087] The energy trading platform 2 side, which has received this value proof request (S301), refers to tracking information linked to the digital currency involved in the exchange (S302), queries the digital currency blockchain management server 6 for the current value of the digital currency involved in the exchange, and calculates the exchange value of the digital currency (S304). The calculated exchange value is sent to the point business operator as value proof (S305 and S403). Next, the energy trading platform 2 sends an instruction for point exchange based on the calculated exchange value to the point business operator (S306), the point business operator 8 executes a point granting process (S404), and the graduated FIT prosumer Ua1 acquires the points (S502).

[0088] Next, the digital currency exchanged for points is written off (S307). In response to the writing off of this token, the digital currency blockchain management server 6 executes an account process for the writing off of the corresponding token (S308). The digital currency blockchain management server 6 executes a process to write off the value of the token, such as writing off the corresponding token or setting the value of the token to zero, and records it in the node. After that, the energy trading platform 2 notifies the point business operator 8 and the graduated FIT prosumer Ua1 of the completion of token writing off, and the user system executes a token issuance completion process (S405). After the token is written off, the remaining tokens owned by the user are reduced.

[0089] (Action and effect) According to the present embodiment described above, a value is assessed based on the time and place of power generation and the power generation method, and the digital currency according to the assessment can be used to buy and sell the power and settle the price. Specifically, according to the system and method according to the present embodiment, the power value is calculated based on the amount of power and the power generation method, and the environmental value, which is the contribution of the power generation related to the power to the environment, is calculated.

[0090] In addition, it is possible to trace the power transmission and distribution path from a user system that is the power transmission source to another user system that is the power transmission destination, associate and manage the tracing result with the power value and environmental value related to the power consumed in each user system as the transmission destination, and calculate the exchange value corresponding to the amount of power in any power usage period. As a result, according to this embodiment, by properly evaluating and proving the environmental value based on the origin of each power based on the time, place, and power generation method of the power, it is possible to properly distribute financial resources such as rewards from the consumer side, such as RE100 member companies, to prosumers who create environmental value by, for example, self-consuming renewable energy, and it is possible to build a highly reliable P2P energy trading platform.

[0091] In addition, in this embodiment, since the blockchain mechanism, which is a distributed ledger system, is adopted as the guarantee system, there is no need for each business operator to install equipment for managing and operating a single, robust system.When information is exchanged between businesses, the distributed database mechanism ensures a common database for linking information, privacy protection, and advanced security measures against data tampering, thereby reducing equipment and operating costs.

[0092] The present invention is not limited to the above-described embodiments, and the components can be modified without departing from the spirit of the invention. Various inventions can be created by appropriately combining the components disclosed in the above-described embodiments. For example, some components may be deleted from all the components shown in the embodiments. [Explanation of symbols]

[0093] 1. Energy trading system 2. Energy trading platform 3. Communication network 4. User system 6. Digital currency blockchain management server 8. Points business operators 11...CPU 21a…Token Management Database 21b...User database 21c…Tracking management database 21d…Electricity trading management database 22…Authentication Department 23...Communication interface 24…Token Management Department 24a…Token issuance instruction section 24b…Token redemption instruction section 24c…Token transfer instruction section 25…Electricity Trading Execution Department 25a…Contract data generation unit 25b…Power tracking section 26…Value Proof Execution Department 26a…Exchange value calculation section 26b…Token value acquisition section 26c…Environmental Value Calculation Division 27…Point Exchange Management Department 28…Certification Department 40...Power control terminal 41...Smart meter 42…Battery 61a…Token transaction history database 61b...Key information database 61c…Account database 62…Authentication section 63...Communication interface 64…Token Trading Execution Department 64a…Transaction history section 64b…Public Address Management Section 64c…Validity Verification Department 64d…Data update section 400…CPU bus 401...Storage device 402...CPU 402a…Electricity Trading Department 403…Memory 404...Input interface 405...Output interface 406…Communication interface

Claims

1. A plurality of user systems that control and manage power for each unit of power consumption; a performance data generating unit in the user system that generates performance data by measuring the amount of power generated or consumed by each user during each power usage period; an environmental value calculation unit that calculates an electricity value based on the amount of electricity in each electricity usage period and the electricity generation method based on the performance data, and calculates an environmental value that is a contribution of the electricity generation related to the electricity to the environment; a power tracking unit that tracks a power transmission / distribution path from each user system to another user system that is a destination; a tracking result recording unit that records the tracking result for each predetermined power usage period by the power tracking unit in association with a power value and an environmental value related to the power consumed in each user system as a transmission destination; an exchange value calculation unit that refers to the trace result recording unit based on an arbitrary power usage period in a user system as the destination, acquires an electric power value and an environmental value corresponding to the electric power in the arbitrary power usage period, and calculates an exchange value corresponding to the amount of electric power in the arbitrary power usage period; A value proof system for electricity trading comprising:

2. a token issuing unit that issues a token according to the environmental value calculated by the environmental value calculation unit; a point exchange management unit that converts the token issued by the token issuing unit into value information corresponding to the exchange value calculated by the exchange value calculation unit based on the current value at the time of issuance of the token; The system for proving value in energy trading according to claim 1, further comprising:

3. The method further includes a token manager that records data related to the issuance and retirement of the token in cooperation with a guarantee system that stores at least a portion of the data related to the issuance and retirement of the token; The token management unit aggregates data stored by the nodes constituting the guarantee system at a predetermined timing, blocks the data, forms a blockchain using the blocks, and shares the blockchain among the nodes to store it as a distributed ledger.

3. The system for proving value in energy trading according to claim 2.

4. The value proof system for energy trading according to claim 3, characterized in that the token management unit further has a function of generating information regarding the transfer included in a transfer request for a depreciated token as a transfer history, and recording the transfer history in cooperation with the guarantee system.

5. a power control and management step of controlling and managing power in a user system for each unit of power consumption; a performance data generating step in which a performance data generating unit in the user system measures the amount of power generated or consumed by each user during each power usage period and generates performance data; an environmental value calculation step in which an environmental value calculation unit calculates an electricity value based on the amount of electricity in each electricity usage period and the electricity generation method thereof based on the performance data, and calculates an environmental value that is a contribution of the electricity generation related to the electricity to the environment; a power tracking step in which a power tracking unit tracks a power transmission / distribution path from each user system to another user system that is a destination of the power transmission; a tracking result recording step in which a tracking result recording unit records the tracking result for each predetermined power usage period by the power tracking unit in association with a power value and an environmental value related to the power consumed in each user system as a transmission destination; an exchange value calculation step in which an exchange value calculation unit refers to the trace result recording unit based on an arbitrary power usage period in a user system as the destination, acquires an electric power value and an environmental value corresponding to the electric power in the arbitrary power usage period, and calculates an exchange value corresponding to the amount of electric power in the arbitrary power usage period; A method for proving value in electricity trading, comprising:

6. a token issuing unit that issues a token according to the environmental value calculated by the environmental value calculation unit; a point exchange management unit that converts the token issued by the token issuing unit into value information corresponding to the exchange value calculated by the exchange value calculation unit based on the current value at the time of issuance of the token; The method for proving value in energy trading according to claim 5, further comprising:

7. The method further comprises: providing a token manager for recording data relating to issuance and redemption of the energy trading token in cooperation with a certification system that stores at least a portion of the data relating to issuance and redemption of the token; The token management unit aggregates data stored by the nodes constituting the guarantee system at a predetermined timing, blocks the data, forms a blockchain using the blocks, and shares the blockchain among the nodes to store it as a distributed ledger. The method for proving value in energy trading according to claim 6.

8. The method of proving value in energy trading according to claim 7, characterized in that the token management unit further has a function of generating information regarding the transfer included in a transfer request for a depreciated token as a transfer history, and recording the transfer history in cooperation with the guarantee system.

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