Supply system, purchase system, and hydrogen sales management system

Abstract

To provide a supply system, a purchase system, and a hydrogen sales management system for realizing hydrogen trading in which the principle of competition operates without opening a market or deploying a central server.SOLUTION: The supply system is provided with: a transmission / reception unit capable of transmitting / receiving information to / from a consumer; a unit price calculation unit for calculating the unit price of hydrogen production for each quality of hydrogen; a selling price calculation unit for calculating the unit price of hydrogen sales for each quality of hydrogen; a message generation unit for, based on demand presentation information indicating the demand amount of hydrogen of the consumer received by the transmission / reception unit, generating commodity presentation information including the quantity of hydrogen saleable to the consumer, the quality of hydrogen and the selling price based on the unit price of hydrogen sales for each quality of hydrogen; a planning unit for generating a hydrogen production plan corresponding to the commodity presentation information based on a purchase request returned by the consumer in response to the commodity presentation information transmitted to the consumer by the transmission / reception unit; and a hydrogen production apparatus for producing hydrogen by utilizing at least one of commercial power and renewable energy power based on the hydrogen production plan.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] Embodiments of the present invention relate to a hydrogen sales management system.

Background Art

[0002] Hydrogen has attracted attention as an energy source with low environmental impact. For the widespread use of hydrogen, for example, in the Fukushima Hydrogen Energy Research Field, the technological development of a hydrogen production device equipped with a solar power generation device has been carried out. In addition, demonstration tests for replacing existing fuels with hydrogen have also been conducted both domestically and internationally.

[0003] In the initial stage when the production and utilization of hydrogen are progressing, it is conceivable that a hydrogen production device and a customer within a transportable distance from the hydrogen production device form a cluster within the region, and hydrogen trading is carried out within the cluster. Various mechanisms can be considered to establish hydrogen trading within the cluster. As such a mechanism, a relative contract between a hydrogen producer and a hydrogen user is exemplified.

[0004] In order to activate the competition principle among hydrogen suppliers or among hydrogen customers, a mechanism such as a market transaction is desirable. However, it is not realistic in terms of management cost to open a hydrogen trading market for each cluster. In a relatively small-scale hydrogen trading cluster, it is desirable to introduce a mechanism to conclude transactions without a large-scale mechanism such as market opening.

[0005] In addition, in the utilization of hydrogen, the requirements for the environmental impact of hydrogen used may vary for each customer, and it is necessary to correctly indicate the environmental impact during production and transportation of hydrogen when it is purchased by the customer.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

[0007] As described above, in conventional hydrogen trading, there is a problem that a hydrogen supplier (hereinafter referred to as a supplier) and a customer cannot realize the buying and selling of hydrogen while applying the principle of competition without going through a market transaction. An object of the present invention is to provide a hydrogen sales management system that realizes hydrogen trading in which the principle of competition works without opening a market or arranging a central server. [Means for Solving the Problems]

[0008] The supply system according to the embodiment is a supply system that supports a supplier in a hydrogen sales management system that supports hydrogen trading between a supplier that produces and sells hydrogen and a customer that purchases hydrogen via a network. This supply system includes a transceiver unit capable of transmitting and receiving information to and from a customer via a network, a unit price calculation unit that calculates the production unit price of hydrogen for each quality of hydrogen based on the maximum hydrogen production amount and the quality of hydrogen produced by the supplier, a sales price calculation unit that calculates the sales unit price of hydrogen for each quality of hydrogen based on the production unit price of hydrogen for each quality of hydrogen, a message generation unit that generates product presentation information including the amount of hydrogen that can be sold to the customer, the quality of hydrogen, and the sales price based on the production unit price of hydrogen for each quality of hydrogen according to the demand presentation information indicating the hydrogen demand amount of the customer received by the transceiver unit, a planning unit that generates a hydrogen production plan corresponding to the product presentation information based on the purchase request returned by the customer in response to the product presentation information transmitted by the transceiver unit to the customer, and a hydrogen production device that produces hydrogen using at least one of commercial power and power from renewable energy based on the hydrogen production plan. [Brief Description of the Drawings]

[0009]

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Mode for Carrying Out the Invention

[0010] (First Embodiment) Hereinafter, with reference to the drawings, the hydrogen sales management system according to the first embodiment of the present invention will be described in detail. FIG. 1 is a block diagram showing the configuration of the hydrogen sales management system of the first embodiment.

[0011] As shown in FIG. 1, the hydrogen sales management system 1 of the first embodiment consists of suppliers 100 (100a, 100b, 100c) and customers 200 (200a, 200b, 200c). The suppliers 100 and the customers 200 are mutually connected by a network NW as a communication path.

[0012] The supplier 100 is a entity that manufactures and sells hydrogen as an energy resource. The supplier 100 generates product presentation information including unit price, quality, supply volume, etc. regarding the sale of hydrogen.

[0013] The customer 200 is a entity that receives and uses the supply of hydrogen as an energy resource. The customer 200 transmits demand presentation information to the supplier 100 regarding the purchase of hydrogen and receives the supply of hydrogen.

[0014] There may be a plurality of suppliers 100 and customers 200 respectively. Each supplier 100 has a position of concluding a sales contract with all customers 200 and supplying hydrogen in exchange for consideration. FIG. 1 shows the exchange of information connecting the supplier 100 and the customers.

[0015] The supplier 100 has a supply system for concluding an agreement on hydrogen supply and consideration with the customer 200. Similarly, the customer 200 has a purchase system for concluding an agreement on hydrogen supply and consideration with the supplier 100. The supplier 100 and the customer 200 use their respective supply systems and purchase systems to realize the exchange of information for concluding a hydrogen transaction contract.

[0016] In the following description, the functions realized by the components can be implemented in circuitry or processing circuitry including a general-purpose processor, an application-specific processor, an integrated circuit, ASICs (Application Specific Integrated Circuits), a CPU (Central Processing Unit), a conventional circuit, and / or a combination thereof, programmed to realize the described functions. The processor includes transistors and other circuits and is regarded as a circuit or processing circuitry. The processor may be a programmed processor that executes a program stored in a memory.

[0017] Also, in the following description, a circuit, a unit, and a means are hardware programmed to realize the described functions or hardware that executes them. The hardware may be any hardware disclosed in this specification or any hardware known as being programmed or executing to realize the described functions. When the hardware is a processor regarded as a type of circuit, the circuit, the means, or the unit is a combination of the hardware and the software used to configure the hardware and / or the processor.

[0018] (Supply System of the Supplier) Next, referring to FIG. 2, the supply system possessed by supplier 100 will be described. FIG. 2 is a block diagram showing the configuration of supply system 101 of the first embodiment. Supply system 101 forms part of hydrogen sales management system 1 that enables supplier 100 to conduct transactions with customer 200.

[0019] As shown in FIG. 2, supply system 101 possessed by supplier 100 includes hydrogen sales system 110, hydrogen production planning device 120, and hydrogen production and shipping device 130. Supply system 101 can be realized by a computer device having a CPU, main memory device, and auxiliary storage device.

[0020] Hydrogen sales system 110 is a functional element that receives demand prompt information received by supplier 100 from customer 200 and generates and transmits product prompt information that presents prices and the like to the customer. Hydrogen sales system 110 has user interface (I / F) 111, transceiver 112, database (DB) 113, message generation unit 114, sales price calculation unit 115, and transceiver management unit 116. Demand prompt information indicating a demand prompt includes the content that customer 200 wishes to purchase. Product prompt information including a hydrogen sales prompt includes the content that supplier 100 can sell.

[0021] User interface 111 is a functional element that receives information from the sales operator who is the user and provides information to the sales operator. Examples of user interface 111 include a keyboard, mouse, display device, and the like. User interface 111 receives price setting information from the sales operator.

[0022] Transceiver 112 is a functional element that communicates with other suppliers 100 and customers 200 via network NW. Transceiver 112 receives demand prompt information sent from customer 200 via network NW, transmits product prompt information accordingly, and receives a purchase request. The purchase request is information indicating a purchase desire in response to the product prompt of supplier 100.

[0023] Database 113 is a storage area capable of accumulating information on suppliers 100 and demanders 200 who exchange demand presentation information, product presentation information, etc. Database 113 can accumulate the addresses of suppliers 100 and demanders 200 on network NW. Database 113 can accumulate all demanders 200 with whom it can enter into a hydrogen sales contract.

[0024] Message generation unit 114 is a functional element that generates information to be transmitted to other suppliers 100 and demanders 200 in a communicable form. Message generation unit 114 generates product presentation information.

[0025] Selling price calculation unit 115 is a functional element that calculates the selling price included in the product presentation information for demander 200. Selling price calculation unit 115 generates hydrogen sales information based on the selling price and purchase requests.

[0026] Transmission / reception management unit 116 is a functional element that manages the destination and timing of information transmission, etc. Transmission / reception management unit 116 controls the transmission of information by transmission / reception unit 112. Also, transmission / reception management unit 116 processes the information received by transmission / reception unit 112.

[0027] Hydrogen production planning device 120 is a functional element that generates hydrogen supply information from the equipment capacity and operation schedule information of a hydrogen production plant, renewable energy (renewable energy) power generation information, grid power tariff information, etc. Also, hydrogen production planning device 120 is a functional element that formulates a hydrogen production plan based on hydrogen sales information. Hydrogen production planning device 120 has a planning department 121, a unit price calculation department 122, and a user interface (I / F) 123.

[0028] Planning department 121 is a functional element that formulates a hydrogen production plan. Planning department 121 creates an optimized hydrogen production plan using parameters such as hydrogen sales information obtained from hydrogen sales system 110.

[0029] The unit price calculation unit 122 is a functional element that calculates the unit price of hydrogen and generates hydrogen supply information. The unit price calculation unit 122 calculates the unit price of the hydrogen to be produced based on a hydrogen production plan including the maximum hydrogen production amount and the quality of the hydrogen to be produced.

[0030] The user interface 123 is a functional element that receives information from the sales operator as the user and provides information to the sales operator. Examples of the user interface 111 include a keyboard, a mouse, a display device, etc. The user interface 123 may be shared with the user interface 111. The user interface 123 receives the plan setting information from the sales operator. The plan setting information is sent to the planning unit 121 that generates the hydrogen production plan.

[0031] The hydrogen production and shipping device 130 is a functional element that produces hydrogen using electric power from the power grid, electric power and water from the renewable energy power generation device (renewable energy device), and ships it to the customer 200. The hydrogen production and shipping device 130 includes a renewable energy power generation device (renewable energy device) 132, a hydrogen production device 133, a tank 134, a shipping device 135, and a control unit 131. In FIG. 2, the broken lines indicate the flow of electric power, water, and hydrogen, and the solid lines indicate the flow of information.

[0032] The renewable energy power generation device (renewable energy device) 132 is a functional element that generates electric power using renewable energy such as sunlight and wind power. The renewable energy device 132 generates electric power based on the information from the control unit 131 and supplies the electric power to the hydrogen production device 133.

[0033] The hydrogen production device 133 is a functional element that produces hydrogen using electric power and water. The hydrogen production device 133 produces a predetermined amount of hydrogen based on the hydrogen production plan received from the control unit 131. The hydrogen production device 133 can generate green hydrogen using the electric power generated by the renewable energy device 132. Also, the hydrogen production device 133 can generate gray hydrogen using the electric power from the power grid. Here, green hydrogen is hydrogen with a low CO2 emission amount and a low environmental load. Gray hydrogen is hydrogen with a higher CO2 emission amount and a higher environmental load than green hydrogen.

[0034] The tank 134 is a functional element that temporarily stores the hydrogen produced by the hydrogen production device 133. The tank 134 sends information such as the amount of hydrogen stored to the control unit 131.

[0035] The shipping device 135 is a functional element that ships a predetermined amount of the hydrogen stored in the tank 134 based on the information from the control unit 131. The shipping of hydrogen includes shipping by vehicle transportation or pipeline. The shipping device 135 sends information such as the amount of hydrogen shipped to the control unit 131.

[0036] The control unit 131 is a functional element that controls the renewable energy device 132, the hydrogen production device 133, and the shipping device 135. The control unit 131 produces a predetermined amount of hydrogen and ships a predetermined amount of hydrogen based on the hydrogen production plan.

[0037] (Purchasing system of the customer) Next, with reference to FIG. 3, the purchasing system of the customer 200 will be described. FIG. 3 is a block diagram showing the configuration of the purchasing system 201 of the first embodiment. The purchasing system forms a part of the hydrogen sales management system 1 that realizes the transaction between the customer 200 and the supplier 100.

[0038] As shown in FIG. 3, the purchasing system 201 of the customer 200 includes a hydrogen purchasing system 210, a hydrogen utilization planning device 220, and a hydrogen receiving and utilization unit 230. The purchasing system 201 can be realized by a computer device having a CPU, a main memory device, and an auxiliary memory device.

[0039] The hydrogen purchase system 210 is a functional element that presents (transmits) the hydrogen demand from the consumer 200 to the supplier 100 based on the hydrogen utilization plan, accepts the product presentation including the selling price of hydrogen, etc. from the supplier 100, and presents the purchase request to the supplier 100. The hydrogen purchase system 210 accepts the hydrogen utilization plan including the hydrogen utilization prediction from the hydrogen utilization planning device 220, and generates the hydrogen purchase information including the amount and price of the hydrogen to be purchased. The hydrogen purchase system 210 includes a user interface (I / F) 211, a transceiver 212, a database 213, a message generation unit 214, a condition determination unit 215, and a transceiver management unit 216.

[0040] The user interface (I / F) 211 is a functional element that accepts information from the purchasing operator as the user and provides information to the purchasing operator. Examples of the user interface 211 include a keyboard, a mouse, a display device, etc.

[0041] The transceiver 212 is a functional element that communicates with the supplier 100 and other consumers 200 via the network NW. The transceiver 212 sends the demand presentation information to the supplier 100 via the network NW, receives the corresponding product presentation information, and sends the purchase request.

[0042] The database 213 corresponds to the database 113. That is, the database 213 is a storage area capable of storing information on the supplier 100 and the consumer 200 who are the counterparts for exchanging the demand presentation information, the product presentation information, etc. The database 213 can store the addresses of the supplier 100 and the consumer 200 on the network NW. The database 213 can store all the consumers 200 with whom it can conclude a hydrogen sales contract.

[0043] The message generation unit 214 corresponds to the message generation unit 114. That is, the message generation unit 214 is a functional element that generates the information to be transmitted to other suppliers 100 and consumers 200 in a communicable form. The message generation unit 214 generates the demand presentation information.

[0044] The condition determination unit 215 is a functional element that determines whether to generate a purchase request based on the selling price included in the product presentation information presented by the supplier 100. The condition determination unit 215 may present the product presentation information to the purchasing operator, who is the user, and accept whether the purchase is possible or not.

[0045] The transmission / reception management unit 216 corresponds to the transmission / reception management unit 116. The transmission / reception management unit 216 is a functional element that manages the destination and timing of information transmission, etc. The transmission / reception management unit 216 controls the transmission of information by the transmission / reception unit 212. Also, the transmission / reception management unit 216 processes the information received by the transmission / reception unit 212.

[0046] The hydrogen utilization planning device 220 is a functional element that generates a hydrogen utilization plan based on hydrogen utilization information. The hydrogen utilization information is information including the hydrogen utilization status in the consumer 200 generated by the hydrogen acceptance and utilization unit 230 based on the utilization status of hydrogen, etc. The hydrogen utilization plan is information including optimized hydrogen utilization in the consumer 200 using the hydrogen utilization information. The hydrogen utilization planning device 220 has a planning department 221 and a user interface 223.

[0047] The planning department 221 is a functional element that generates a hydrogen utilization plan based on the hydrogen utilization information received from the hydrogen acceptance and utilization unit 230. The hydrogen utilization plan is sent to the hydrogen purchase system 210. Also, the planning department 221 has a function of presenting the hydrogen purchase information received from the hydrogen purchase system 210 to the user via the user interface 223.

[0048] The user interface (I / F) 223 is a functional element that receives information from the purchasing operator, who is the user, and provides information to the purchasing operator. Examples of the user interface 223 include a keyboard, a mouse, a display device, etc. The user interface 223 may be shared with the user interface 211. The user interface 223 receives plan setting information from the purchasing operator. The plan setting information is sent to the planning department 221.

[0049] The hydrogen acceptance and utilization unit 230 is a functional element that accepts, stores, and actually utilizes the purchased hydrogen. The hydrogen acceptance and utilization unit 230 includes a user interface 232, a receiving device 233, a tank 234, a hydrogen utilization device 235, and a control unit 231. In FIG. 3, the dashed line indicates the flow of hydrogen, and the solid line indicates the flow of information.

[0050] The user interface (I / F) 232 is a functional element that receives information from the purchasing operator as the user and provides information to the purchasing operator. Examples of the user interface 232 include a keyboard, a mouse, a display device, etc. The user interface 232 may be shared with the user interfaces 211 and 223. The user interface 223 receives operation commands for the entire hydrogen acceptance and utilization unit 230 from the purchasing operator.

[0051] The receiving device 233 is a functional element that accepts the hydrogen purchased from the supplier 100. Examples of the receiving device 233 include a filling device that fills the hydrogen purchased from the supplier 100 into the tank 234.

[0052] The tank 234 is a functional element that stores the hydrogen purchased from the supplier 100. The tank 234 receives control from the control unit 231 and supplies a predetermined amount of hydrogen to the hydrogen utilization device 235.

[0053] The hydrogen utilization device 235 is a functional element that actually utilizes the hydrogen purchased from the supplier 100. Examples of the hydrogen utilization device 235 include a manufacturing device for products, a processing device, a heating device, etc. The hydrogen utilization device 235 operates under the control of the control unit 231.

[0054] The control unit 231 is a functional element that controls the tank 234 and the hydrogen utilization device 235. The control unit 231 controls the amount of hydrogen supplied from the tank and the operation content of the hydrogen utilization device based on the operation command received by the user interface 232 from the user.

[0055] (Operation of the Hydrogen Sales Management System) Next, with reference to FIG. 4, the operations of the supply system 101 of the supplier 100 and the purchase system 201 of the customer 200 will be described. FIG. 4 is a flowchart showing the communication operations of the hydrogen sales management system 1 of the first embodiment. FIG. 4 shows, as an example, the case where the suppliers 100a, 100b and the customers 200a, 200b participate in the hydrogen transaction.

[0056] The purchase system 201 of the customer 200a transmits demand prompt information to the supply systems 101 of all the suppliers 100a, 100b (referred to as "A" and "B" in the figure). The transmission of the demand prompt information is a presentation of the customer 200a's desire to purchase hydrogen from the suppliers 100a, 100b. The content of the demand prompt information includes, for example, the date of receiving hydrogen supply, the desired supply quantity, and the quality of the hydrogen to be received.

[0057] The quality of hydrogen refers to the environmental load discharged during hydrogen production. Here, hydrogen with an environmental load below a certain value is called green hydrogen, and hydrogen with an environmental load exceeding the certain value is called gray hydrogen. In the following description, the CO2 emission amount is used as an indicator to show the environmental load, but it is not limited to this. The environmental load may be represented using an indicator other than the CO2 emission amount.

[0058] The quality of hydrogen is not limited to two levels of green hydrogen and gray hydrogen. It may also be the value of the CO2 emission amount itself. In this case, for example, when the hydrogen production and shipping device 130 produces hydrogen using only the power from the on-site renewable energy device 132, the CO2 emission amount assigned to the hydrogen is set to 0 kgCO2e / kg, and when hydrogen is produced using only grid power, the value calculated by calculating the CO2 emission amount per kg of hydrogen from the CO2 emission amount per kWh of grid power (for example, 25 kgCO2e / kg) may be used.

[0059] The purchase system 200a of the customer 200a not only transmits demand presentation information to the supply systems 101 of the suppliers 100a and 100b but also to the purchase systems 201 of other customers 200b other than itself (denoted as "C" in the figure). This is intended to introduce the mechanism of the competition principle into the relative contracts among the suppliers 100a and 100b and the customers 200a and 200b. The demand presentation information transmitted to the suppliers 100a and 100b is also transmitted to the purchase systems 201 of other customers 200b other than itself.

[0060] Next, the suppliers 100a and 100b transmit product presentation information to all the customers 200a and 200b (denoted as "D", "E", "F", and "G" in the figure). Examples of the content of the product presentation information include the date of hydrogen supply, the supplyable quantity, the quality of the hydrogen to be supplied, and the price. The product presentation information is a sales offer in response to the demand presentation information.

[0061] At this time, all the suppliers 100a and 100b also transmit product presentation information to other suppliers 100b and 100a (denoted as "H" and "I" in the figure). The product presentation information transmitted here is the same as that transmitted to the customers 200a and 200b.

[0062] Upon receiving the product presentation information from the suppliers 100a and 100b, the customer 200a transmits a purchase request to the supplier (in the example shown in Figure 4, it is the supplier 100a) (denoted as "J" in the figure). Examples of the information included in the purchase request are the date of receiving the supply, the supply quantity, and the quality of the hydrogen to be received.

[0063] The supplier 100a that has received the purchase request replies with either approval or rejection (denoted as "K" in the figure). By repeating the above processes between the supplier 100 and the customer 200, the hydrogen trading between the supplier and the customer is established.

[0064] The quality of hydrogen may not be determined at the time of establishing the hydrogen trading but may be determined during production. In this case, since the quality of hydrogen is a provisional value at the stage of transmitting the product presentation information, the supplier 100a may assign a definite value to the quality of hydrogen and transmit it to the customer 200a at the hydrogen supply stage (denoted as "L" in the figure).

[0065] According to the hydrogen sales management system of this embodiment, a trading transaction can be established without placing a mediator other than the supplier and the customer. Further, according to the hydrogen sales management system of this embodiment, since product presentation information is shared among suppliers, it can be expected that the functions of adjusting the price, the supply available date dispersion, the quantity, and the quality to be provided among the suppliers will work autonomously. Furthermore, according to the hydrogen sales management system of this embodiment, by sharing demand presentation information among customers, it can be expected that the functions of adjusting the dispersion of the desired dates, the demand, and the quantity among the customers will work autonomously.

[0066] (Operation of the supply system) Next, with reference to FIGS. 2 and 5, the operation of the supply system of this embodiment will be described. FIG. 5 is a flowchart showing the operation of the supply system of the first embodiment.

[0067] The transmission / reception management unit 116 of the hydrogen sales system 110 registers the addresses of the suppliers 100 and the customers 200 received from the user via the user interface 111 in the database 113 (S100). In the hydrogen sales management system of this embodiment, a common product presentation is made to all the suppliers 100 and the customers 200. Therefore, the destination information of all the suppliers 100 and the customers 200 related to the hydrogen transaction is registered in the database 113.

[0068] The transmission / reception management unit 116 receives demand presentation information from the customer 200 (for example, customer 200a) via the transmission / reception unit 112 (S110).

[0069] The transmission / reception management unit 116 presents the demand presentation information of the customer 200a to the user via the interface 111 based on the received demand presentation information (S120).

[0070] The interface 123 of the hydrogen production planning device 120 receives planning setting information from the user (S130).

[0071] The unit price calculation unit 122 calculates the unit price of hydrogen based on the received plan setting information (S140).

[0072] The sales price calculation unit 115 of the hydrogen sales system 110 calculates the hydrogen sales volume and sales price based on the price setting information received by the interface 111 and the hydrogen unit price information generated by the unit price calculation unit 122 (S150).

[0073] The message generation unit 114 generates product presentation information based on the hydrogen sales volume and sales price generated by the sales price calculation unit 115.

[0074] (Example of product presentation information) Figs. 9 to 11 are diagrams showing an example of product presentation information by the supply system of the first embodiment. The product presentation information shown in Fig. 9 shows the hydrogen supply amount and unit price for three days. That is, for August 7, 2600 Nm3 of green hydrogen at a unit price of 115 yen / Nm3 and 7000 Nm3 of gray hydrogen at a unit price of 100 yen / Nm3, for August 8, only 9600 Nm3 of green hydrogen at a unit price of 115 yen / Nm3, and for August 9, 5600 Nm3 at a unit price of 115 yen·Nm3 and 4000 Nm3 of gray hydrogen at a unit price of 110 yen / Nm3 are shown to be available for supply. A higher unit price is set for green hydrogen with a lower environmental load. The user can refer to such product presentation information to determine whether to purchase.

[0075] The product presentation information shown in Fig. 10 shows the quality of hydrogen in the product presentation information shown in Fig. 9 in terms of CO2 emissions. That is, instead of the display of green hydrogen and gray hydrogen, CO2 emissions of 0 kgCO2e / kg and 25 kgCO2e / kg are attached to the sold hydrogen and displayed.

[0076] The product presentation information shown in FIG. 11 shows the case where the supplier can produce multiple qualities of hydrogen on the same day in the product presentation information shown in FIG. 9. The product presentation information shown in FIG. 11 can, for example, produce two qualities of hydrogen, "Green 1" and "Green 2", on August 7, and the unit prices are 115 yen / Nm3 and 120 yen / Nm3 respectively. The customer can purchase either the pair of "Green 1" and "Gray 1" or the pair of "Green 2" and "Gray 2".

[0077] Also, the product presentation information illustrated in FIG. 11 indicates that the total production volume of "Green 1" and "Gray 1" is below a certain amount (for example, in the case of August 7, the upper limit of the sum of the purchase volumes of "Green 1" and "Gray 1" is 2600 Nm3), and the total of "Green 2" and "Gray 2" is below a certain amount (for example, in the case of August 7, the upper limit of the sum of the purchase volumes of "Green 2" and "Gray 2" is 8000 Nm3). That is, the product presentation information can show that for each hydrogen with multiple origins, it is presented as hydrogen with a high CO2 emission volume and hydrogen with a low CO2 emission volume, and there is an upper limit to the sum of the purchase volumes of both.

[0078] According to the product presentation information illustrated in FIGS. 9 to 11, the customer can purchase the quality and quantity of hydrogen they desire while referring to the price. Also, the supplier can determine the quantity and quality of the hydrogen to be produced according to the customer's wishes.

[0079] The transmission / reception management unit 116 sets the customers 200 and the suppliers 100 registered in the database 113 as the destinations, and transmits the product presentation information through the transmission / reception unit 112 (S160).

[0080] The transmission / reception management unit 116 waits for a purchase request from the customer 200a who has sent a demand prompt (No in S170, S170).

[0081] When a change request regarding product presentation information is received from the customer 200a (No in S180), the selling price calculation unit 115 presents the change request received through the user interface 111 to the user (S190). Examples of the change request include presenting changes to the purchase conditions.

[0082] When the user modifies the unit price, quality, etc. of the product presentation, the selling price calculation unit 115 accepts the modification of the unit price and quality (S200).

[0083] The selling price calculation unit 115 recalculates the hydrogen sales volume and selling price based on the modified information (S150). The message generation unit 114 generates product presentation information, and the transmission / reception management unit 116 transmits the product presentation information to the customer 200 and the supplier 100 (S160).

[0084] When a purchase request regarding the content of the product presentation information is received from the customer 200a (Yes in S180), the message generation unit 114 generates a purchase approval message. The transmission / reception management unit 116 transmits the purchased product message to the customer 200a (S210).

[0085] The selling price calculation unit 115 generates hydrogen sales information based on the product presentation information corresponding to the approved purchase request (S220).

[0086] The planning department 121 of the hydrogen production planning device 120 formulates a hydrogen production plan based on the hydrogen sales information (230).

[0087] The control unit 131 of the hydrogen production and shipping device 130 causes the hydrogen production device 133 to produce hydrogen of a predetermined quality and a predetermined quantity based on the hydrogen production plan, and the shipping device 135 ships the produced hydrogen (S240).

[0088] (Hydrogen production plan and product presentation information) In the above example, the planning department 121 formulates a hydrogen production plan based on hydrogen sales information, but it is not limited to this. The planning department 121 may first formulate a hydrogen production plan, and within its scope, the message generation unit 114 may generate product presentation information. Hereinafter, with reference to FIG. 12, the operation of generating product presentation information according to the hydrogen production plan will be described. FIG. 12 is a flowchart showing an example of a method for generating product presentation information.

[0089] For example, in the case of a plan to produce hydrogen using power with a low CO2 emission in the hydrogen production plan (Yes in S241), when the message generation unit 114 generates product presentation information for selling hydrogen with a low CO2 emission (Yes in S242), the hydrogen production device 133 can produce and sell hydrogen as planned (S243). On the other hand, in the case of a plan to produce hydrogen using power with a low CO2 emission in the hydrogen production plan (Yes in S241), when the message generation unit 114 generates product presentation information for selling hydrogen with a higher CO2 emission than that (No in S242), the hydrogen production device 133 can produce hydrogen as planned and produce and sell it as hydrogen with a higher CO2 emission whose value is separated from the hydrogen with a low CO2 emission as a certificate (S244).

[0090] Similarly, in the case of a plan to produce hydrogen using power with a high CO2 emission in the hydrogen production plan (No in S241), when the message generation unit 114 generates product presentation information for selling hydrogen with a high CO2 emission (Yes in S245), the hydrogen production device 133 can produce and sell hydrogen as planned (S246). On the other hand, in the case of a plan to produce hydrogen using power with a high CO2 emission in the hydrogen production plan (No in S241), when the message generation unit 114 generates product presentation information for selling hydrogen with a lower CO2 emission than that (No in S245), the hydrogen production device 133 can change the power to be used to power with a low CO2 emission and produce and sell hydrogen, or purchase a CO2 emission certificate and change the produced hydrogen to hydrogen with a low CO2 emission and produce and sell it (S247).

[0091] That is, when there is a production plan for producing hydrogen of a plurality of hydrogen qualities in advance, it becomes possible to present various combinations in the generation of product presentation information.

[0092] According to the supply system of this embodiment, a trading transaction can be established without placing a mediator other than the supplier and the demander.

[0093] (Calculation of hydrogen unit price) Next, with reference to FIG. 6, the calculation of the hydrogen unit price by the hydrogen production planning device 120 will be described. FIG. 6 is a flowchart showing the unit price calculation operation (S140) of the first embodiment.

[0094] The unit price calculation unit 122 receives the plan setting information. The plan setting information may include, for example, the hydrogen production capacity in the hydrogen plant, the operable time of the hydrogen plant, PV power generation prediction, grid power unit price, selling electricity unit price, and the like.

[0095] First, the unit price calculation unit 122 calculates the maximum hydrogen production amount per day based on the operable time of the hydrogen plant and the hydrogen production capacity of the hydrogen plant (S141). The maximum hydrogen production amount may be, for example, a different value for each day of the week.

[0096] Next, the unit price calculation unit 122 calculates the production amount for each hydrogen quality, that is, the green hydrogen production amount and the gray hydrogen production amount per day, based on the PV power generation prediction value (S142).

[0097] Subsequently, the unit price calculation unit 122 calculates the hydrogen production unit price based on the maximum hydrogen production amount, the production amount for each hydrogen quality, the power unit price, and the like (S143). Specifically, the unit price calculation unit 122 calculates the gray hydrogen production unit price per day based on the grid power unit price, and calculates the green hydrogen production unit price per day based on the PV selling electricity unit price.

[0098] Through such a procedure, the unit price calculation unit 122 outputs the green hydrogen production amount per day, the unit price, the gray hydrogen production amount, and the unit prices of each.

[0099] (Calculation of Hydrogen Sales Price) Next, with reference to FIG. 7, the calculation of the hydrogen sales price by the hydrogen sales system 110 will be described. FIG. 7 is a flowchart showing the sales price calculation operation of the first embodiment.

[0100] The sales price calculation unit 115 receives price setting information. The price setting information includes, for example, the hydrogen production amount and the hydrogen production unit price on a daily basis or for each quality of hydrogen. In addition, the sales price calculation unit 115 receives hydrogen supply information. The hydrogen supply information includes, for example, the hydrogen production amount and unit price output by the unit price calculation unit 122, and the unit price of the CO2 emission certificate (CO2 kg / H2 kg) received by the user interface 111 from the user.

[0101] First, the sales price calculation unit 115 calculates the gray hydrogen sales unit price by adding the first profit to the gray hydrogen production unit price (S151). The first profit is the profit when selling gray hydrogen.

[0102] Next, the sales price calculation unit 115 calculates the gray hydrogen-based green hydrogen sales unit price by adding the unit price of the CO2 emission certificate and the second profit to the gray hydrogen production unit price (S152). The gray hydrogen-based green hydrogen sales unit price is the sales unit price of hydrogen that is gray hydrogen and takes into account the CO2 emission certificate. The second profit is the profit when selling gray hydrogen-based green hydrogen.

[0103] Next, the sales price calculation unit 115 calculates the green hydrogen sales unit price by subtracting the first discount amount from the gray hydrogen-based green hydrogen sales unit price (S153). The calculation of the first discount amount takes into account the green hydrogen production unit price.

[0104] Furthermore, the sales price calculation unit 115 calculates the green hydrogen-based gray hydrogen sales unit price by subtracting the second discount amount from the gray hydrogen sales unit price (S154). The calculation of the second discount amount takes into account the green hydrogen production unit price.

[0105] Thus, according to the hydrogen sales management system of this embodiment, the selling price per unit of gray hydrogen-based green hydrogen and the selling price per unit of green hydrogen-based gray hydrogen can be obtained. That is, the selling price according to the quality of hydrogen can be determined.

[0106] In addition, in the above example, the maximum hydrogen production capacity, green hydrogen production volume, and gray hydrogen production volume per day are calculated, and the unit price of hydrogen is calculated based on them, but it is not limited to this. For example, the maximum hydrogen production capacity, green hydrogen production volume, and gray hydrogen production volume per week may be calculated, and the unit price of hydrogen may be calculated based on them. The same applies to the calculation of the selling price per unit and the selling price.

[0107] (Operation of the Purchase System) Subsequently, with reference to FIGS. 3 and 8, the operation of the purchase system of this embodiment will be described. FIG. 8 is a flowchart showing the operation of the purchase system of the first embodiment.

[0108] The transmission / reception management unit 216 of the hydrogen purchase system 210 registers the addresses of the supplier 100 and the customer 200 received from the user via the user interface 211 in the database 213 (S300). In the hydrogen sales management system of this embodiment, a common demand prompt is made to all suppliers 100 and customers 200. Therefore, the destination information of all suppliers 100 and customers 200 related to hydrogen transactions is registered in the database 213.

[0109] The message generation unit 214 receives the user's demand information through the user interface 211 (S310).

[0110] The message generation unit 214 generates demand prompt information based on the user's demand information (S320).

[0111] The transmission / reception management unit 216 sets the supplier 100 and the customer 200 registered in the database 213 as destinations, and transmits the demand prompt information through the transmission / reception unit 212 (S330).

[0112] The transmission / reception management unit 216 waits for a product presentation from the supplier 100 (S340, No of S340).

[0113] When receiving a product presentation from the supplier 100 (Yes of S340), the transmission / reception management unit 216 presents product presentation information to the user through the user interface 211 (S350).

[0114] (Example of product presentation information) FIG. 13 is a diagram showing an example of product presentation information received by the purchasing system according to the first embodiment. FIG. 14 is a diagram showing another example of product presentation information received by the purchasing system according to the first embodiment.

[0115] FIG. 13 is an example of product presentation information presented to the user when the suppliers 100a, 100b, and 100c return product presentation information according to the demand presentation information of the demander 200a. In the example shown in FIG. 13, it shows the product presentation information when the demander 200a transmits demand presentation information desiring "5000 Nm3" of hydrogen with a quality of "0 kgCO2e / kg". That is, for August 7, offers are made from the supplier 100a at a unit price of 117.4 yen / Nm3, from the supplier 100b at a unit price of 120 yen / Nm3, and from the supplier 100c at a unit price of 122 yen / Nm3. The unit price presented by the supplier 100a for August 7 is an example when it is possible to produce hydrogen of a plurality of qualities exemplified in FIG. 11, and the unit prices of "green 1" and "green 2" are combined and displayed according to the required amount.

[0116] The supply quantity and price (unit price) presented by the supplier 100a shown in FIG. 13 are processed by the transmission / reception management unit 216 for display of product presentation information. That is, the unit prices of two types of green hydrogen are summarized as the unit price of one type of green hydrogen. This is because, for the purchase of 5000 Nm3 of green hydrogen on August 7 desired by the customer 200a, the supply quantity is insufficient with only the cheaper green hydrogen 1, and it shows the purchase unit price when purchased in the combination that results in the lowest total amount (for example, purchasing 2600 Nm3 of green hydrogen 1 and 2400 Nm3 of green hydrogen 2). By such a display operation, the customer 200a can easily know the unit price when purchasing the desired amount of hydrogen from the supplier 100a that sells hydrogen of the same quality at multiple unit prices.

[0117] Also, the product presentation information shown in FIG. 13 includes the unit prices when purchasing from other suppliers 100b and 100c. This enables comparison and purchase simultaneously with the supply unit prices from other suppliers.

[0118] FIG. 14 is an example further including the presented prices of the suppliers 100a', 100b', and 100c when the customer 200a purchases a certificate to cancel the CO2 emission amount in addition to the product presentation information illustrated in FIG. 13.

[0119] The presented prices of the suppliers 100a', 100b', and 100c shown in FIG. 14 are the unit prices when purchasing gray hydrogen from the suppliers 100a, 100b, and 100c and the customer purchases a certificate to cancel the CO2 emission amount on the customer side. Here, it is assumed that the gray hydrogen has a pre-given CO2 emission amount and is notified to the customer. With such product presentation information, the customer side can determine a reasonable purchase method including not only the purchase of green hydrogen on the supply side but also the case of purchasing gray hydrogen.

[0120] When the content of the product prompt information does not meet the conditions of the demand prompt information, or when the user inputs the modified demand prompt information through the interface 211 (No in S360, S360), the condition determination unit 215 accepts the modified demand prompt (S370).

[0121] The message generation unit 214 generates the modified demand prompt information (S380), and the transmission / reception management unit 216 transmits the modified demand prompt information through the transmission / reception unit 212 (S330).

[0122] When the content on the product prompt meets the conditions of the demand prompt information, or when the user inputs a purchase approval through the interface 211 (Yes in S360), the transmission / reception management unit 216 transmits a purchase request to the supplier 100 that has made the product prompt for approval through the transmission / reception unit 212. The transmission / reception management unit 216 receives the approval information transmitted by the supplier 100 in response to the purchase request (S390).

[0123] The condition determination unit 215 sends the established hydrogen purchase content to the planning department 221 as hydrogen purchase information. The planning department 221 generates a hydrogen utilization plan based on the hydrogen purchase information (S400). The control unit 231 controls the hydrogen utilization device 235 in response to the hydrogen utilization plan.

[0124] According to the purchase system of this embodiment, a trading transaction can be established without placing a mediator other than the supplier and the demander.

[0125] (Second Embodiment) Subsequently, a hydrogen sales management system according to the second embodiment of the present invention will be described. FIG. 15 is a block diagram showing the configuration of the hydrogen sales management system of the second embodiment. The hydrogen sales management system of the second embodiment is obtained by changing the communication paths of the supplier and the demander in the hydrogen sales management system of the first embodiment. In the following description, elements common to the first embodiment are denoted by common reference numerals, and duplicate descriptions are omitted.

[0126] As shown in FIG. 15, in the hydrogen sales management system of this embodiment, not all suppliers and customers are connected as communication partners. In the example shown in FIG. 15, there is no connection relationship as communication partners between supplier 100b and suppliers 100c and customer 200c, and between supplier 100c and customer 200a. This means that there is no contractual relationship for hydrogen transactions between the supplier and the customer.

[0127] In the hydrogen sales management system of the first embodiment, all suppliers and customers in the hydrogen transaction relationship share demand presentation information and product presentation information. However, depending on the contractual relationship, it may not be necessary (or not advisable) to share such information with all suppliers and customers. The hydrogen sales management system of the second embodiment restricts the sharing of product presentation information and demand presentation information by omitting the destinations that should not receive the information. Note that the content of the transmission may also be restricted even for the destinations that should receive the information.

[0128] Specifically, it can be realized by deleting the addresses of suppliers 100 and customers 200 that do not supply information in the database 113 of the supply system 101 and the database 213 of the purchase system 201. In the databases 113 and 213, a flag may be set for suppliers 100 and customers 200 for which information sharing is not required, and the transmission / reception management units 116 and 216 may be configured not to transmit to the destinations with the flag set. Other known methods may be adopted for the method of excluding specific destinations from information sharing partners.

[0129] In the example shown in FIG. 15, both customers 200a and 200b transmit demand presentation information to suppliers 100a and 100b. That is, customers 200a and 200b have a common trading partner. Therefore, customers 200a and 200b share the demand presentation information for suppliers 100a and 100b who are the common trading partners (m4 in the figure). Similarly, since the trading partners of customers 200a and 200b are common, suppliers 100a and 100b share the product presentation information for customers 200a and 200b (m1 in the figure).

[0130] On the other hand, the consumer 200c has no trading relationship with the supplier 100b. The only trading partner common to the consumers 200a and 200c is the supplier 100a. Therefore, the consumers 200a and 200c share demand information presented to the common trading partner, the supplier 100a (m3 in the figure). The same applies to the sharing relationships of m2 and m5 in the figure.

[0131] According to the hydrogen sales management system of this embodiment, it is possible to prevent the disclosure of unnecessary hydrogen trading information.

[0132] (Third Embodiment) Subsequently, a hydrogen sales management system according to the third embodiment of the present invention will be described. FIG. 16 is a block diagram showing the configuration of the hydrogen sales management system of the third embodiment. FIG. 17 is a block diagram showing the configuration of the supply system of the third embodiment. FIG. 18 is a block diagram showing the configuration of the purchase system of the third embodiment. FIG. 19 is a block diagram showing the configuration of the transportation system of the third embodiment.

[0133] The hydrogen sales management system of the third embodiment is obtained by adding a transporter to the configurations of the suppliers and consumers in the hydrogen sales management systems of the first and second embodiments. In the following description, elements common to the first and second embodiments are denoted by common reference numerals, and redundant descriptions are omitted.

[0134] As shown in FIG. 16, the hydrogen sales management system 3 of this embodiment includes a transporter 300. The transporter 300 is a functional element that transports hydrogen supplied (sold) by the supplier 100 to the consumer 200. Examples of the transporter 300 include vehicles such as tank trucks and facilities such as pipelines. The transporter 300 has a transportation system 301.

[0135] As shown in FIG. 17, in the hydrogen sales management system of this embodiment, the shipping device 135 of the hydrogen production and shipping device 130 ships hydrogen to the transportation system 301. Further, as shown in FIG. 18, the receiving device 233 of the hydrogen receiving and utilization unit 230 receives hydrogen from the transportation system 301.

[0136] As shown in FIG. 19, the transportation system 301 of this embodiment includes a transportation management unit 310 and a transportation unit 320.

[0137] The transportation management unit 310 is a functional element that receives hydrogen transportation information from the control unit 131 of the hydrogen production and shipping device 130 and transmits the hydrogen transportation information to the control unit 231 of the hydrogen receiving and utilization unit 230. The hydrogen transportation information may include hydrogen sales information and hydrogen purchase information.

[0138] The transportation unit 320 is a functional element that transports the received hydrogen. Examples of the transportation means of the transportation unit 320 include a hydrogen trailer. The transportation unit 320 receives hydrogen of the quality indicated by the hydrogen transportation information from the supplier 100 and supplies it to the customer 200.

[0139] The transportation unit 320 may be held by the supplier 100, the customer 200, and the transporter 300 in duplicate, or may be held by at least one of the supplier 100 and the customer 200 that conducts hydrogen sales and purchases. Further, the transportation unit 320 may be held only by the transporter 300.

[0140] The significance of the transportation management unit 310 of the transporter 300 sharing the hydrogen transportation information with the control unit 131 of the supplier 100 lies in the fact that the transportation cost can be presented together in the product presentation information presented by the supplier 100 to the customer 200. That is, the sales price calculation unit 115 and the message generation unit 114 can use the hydrogen transportation information to generate the product presentation information.

[0141] The transportation cost when the supplier 100 arranges the transporter 300 may be different from the transportation cost when the customer 200 arranges the transporter 300. By showing the transportation cost in the product presentation information issued by the customer 200, the customer 200 can take a purchasing action considering the transportation cost.

[0142] In the hydrogen sales management system of this embodiment, the location information of the supplier 100, the customer 200, and the transporter 300 is shared. For example, the database 113 and the database 213 may store the location information together with the destination information. The transportation management unit 310 may manage the location information of the supplier 100 and the customer 200. Thereby, the sales price calculation unit 115 and the condition determination unit 215 can calculate the cost when transporting hydrogen from the supplier 100 to the customer 200 and the amount of CO2 emissions generated during transportation for each of the supplier 100, the customer 200, and the transporter 300.

[0143] Next, the product presentation information in the hydrogen sales management system of this embodiment will be described. FIG. 20 is a diagram showing an example of product presentation information by the supply system of the third embodiment. FIG. 21 is a diagram showing another example of product presentation information by the supply system of the third embodiment. FIG. 22 is a diagram showing another example of product presentation information by the supply system of the third embodiment.

[0144] FIG. 20 is an example of product presentation information shown by the supplier 100a to the customer 200a. The example shown in FIG. 20 is the content of selling 2600 Nm3 of hydrogen with a CO2 emission of 0 kgCO2e / kg at a hydrogen unit price of 115 yen / Nm3. At this time, the hydrogen cost is 299,000 yen. The transportation cost to the customer 200a and the amount of CO2 emissions during transportation can be calculated based on the location information of the customer 200a and the transportation means and fuel held by the supplier 100a. In the example shown in FIG. 20, the transportation cost is 50,000 yen and the CO2 emission during transportation is 5 kgCO2e. The total cost and the quality of hydrogen are also calculated on the side of the supplier 100a. The total cost is 349,000 yen, and the quality of hydrogen including transportation is 2.15 kgCO2 / kg. The quality of hydrogen including transportation is the quality of hydrogen taking into account the amount of CO2 emissions generated during transportation.

[0145] The supplier 100a transmits product presentation information to customers other than the customer 200a. Since the transportation cost and the CO2 emission amount during transportation vary depending on the customer, the transportation cost and the CO2 emission amount during transportation for other customers (for example, the customer 200b) are different values from those for the customer 200a.

[0146] Figure 21 is an example of product presentation information including the case where the transporter 300 performs transportation. In the example shown in Figure 21, in addition to the product presentation information shown in Figure 20, the transportation cost and the CO2 emission amount during transportation when the transporter 300 performs hydrogen transportation are included.

[0147] Figure 22 is an example of product presentation information further including the case where the customer 200 performs transportation. In the example shown in Figure 22, in addition to the product presentation information shown in Figure 21, a product presentation when the customer 200a performs transportation is added. Information on the transportation cost and the CO2 emission amount during transportation when the customer 200 performs transportation may be presented by the customer 200 to the supplier 100 with respect to transportation-related information, or the customer 200 may add transportation-related information to the product presentation information and present it to the user.

[0148] By presenting such product presentation information, the customer 200 can determine the purchase of hydrogen in consideration of the CO2 emission amount and price including transportation.

[0149] In the examples shown in Figures 20 to 22, one type of hydrogen quality is shown in the product presentation information, but it is not limited to this. Multiple types of hydrogen quality may be included. Further, these hydrogen qualities may be hydrogen produced by purchasing green power or hydrogen with a zero CO2 emission amount by applying a certificate to grid power having an emission factor.

[0150] As described above, several embodiments of the present invention have been explained. However, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and its equivalent scope.

Explanation of Reference Numerals

[0151] 1 to 3... Hydrogen sales management system, 100, 100a, 100b, 100c... Suppliers, 101, 103... Supply systems, 110... Hydrogen sales system, 111... User interface, 112... Transmission / reception unit, 113... Database, 114... Message generation unit, 115... Sales price calculation unit, 116... Transmission / reception management unit, 120... Hydrogen production planning device, 121... Planning department, 122... Unit price calculation unit, 123... User interface, 130... Hydrogen production and shipping device, 131... Control unit, 132... Renewable energy device, 133... Hydrogen production device, 134... Tank, 135... Shipping device, 200, 200a, 200b, 200c... Customers, 201, 203... Purchase systems, 210... Hydrogen purchase system, 211... User interface, 212... Transmission / reception unit, 213... Database, 214... Message generation unit, 215... Condition determination unit, 216... Transmission / reception management unit, 220... Hydrogen utilization planning device, 221... Planning department, 223... User interface, 230... Hydrogen reception and utilization unit, 231... Control unit, 232... User interface, 233... Reception device, 234... Tank, 235... Hydrogen utilization device, 300... Transporter, 301... Transportation system, 310... Transportation management department, 320... Transportation department

Claims

1. In a hydrogen sales management system that supports hydrogen trading via a network between a supplier that produces and sells hydrogen and a customer that purchases the hydrogen, a supply system that supports the supplier, a transceiver capable of transmitting and receiving information to and from the customer via the network, a unit price calculation unit that calculates the production unit price of hydrogen for each quality of hydrogen based on the maximum hydrogen production amount and the quality of the hydrogen produced by the supplier, a sales price calculation unit that calculates the sales unit price of hydrogen for each quality of hydrogen based on the production unit price of hydrogen for each quality of hydrogen, a message generation unit that generates product presentation information including the amount of hydrogen that can be sold to the customer based on the sales unit price of hydrogen for each quality of hydrogen, the quality of hydrogen indicating the environmental load, and the sales price, based on the demand presentation information indicating the hydrogen demand amount of the customer received by the transceiver, a planning unit that generates a hydrogen production plan corresponding to the product presentation information based on the purchase request replied by the customer in response to the product presentation information transmitted by the transceiver to the customer, and a hydrogen production device that produces hydrogen using at least one of commercial power and power from renewable energy based on the hydrogen production plan A supply system comprising.

2. The supply system according to claim 1, wherein the transceiver transmits the product presentation information to other customers other than the customer who transmitted the demand presentation information and other suppliers other than itself.

3. The demand presentation information includes the date of obtaining hydrogen, the amount of hydrogen, and the quality of hydrogen or the CO2 emission amount indicating the environmental load, The product presentation information includes the date of obtaining hydrogen, the amount of hydrogen, and the quality of hydrogen or the CO2 emission amount indicating the environmental load, and the price, The supply system according to claim 1, characterized in that.

4. The hydrogen production device produces hydrogen having a plurality of origins based on a plurality of energy sources, and assigns the CO2 emission amount derived from the CO2 emission amount of each of the plurality of energy sources to the plurality of hydrogen, The supply system according to claim 1, characterized in that.

5. The product presentation information includes an upper limit value of the sum of the purchase amounts of hydrogen having a first CO2 emission amount and hydrogen having a second CO2 emission amount higher than the first CO2 emission amount, When selling hydrogen with the first CO2 emission amount in the case of a plan to produce hydrogen using the power corresponding to the first CO2 emission amount in the hydrogen production plan, the hydrogen production apparatus produces hydrogen as per the hydrogen production plan, When selling hydrogen with the second CO2 emission amount in the case of a plan to produce hydrogen using the power corresponding to the first CO2 emission amount in the hydrogen production plan, the hydrogen production apparatus produces hydrogen as per the hydrogen production plan, and the product presentation information separates its value as a certificate from the hydrogen with the first CO2 emission amount and includes it as hydrogen with the second CO2 emission amount, When selling hydrogen with the second CO2 emission amount in the case of a plan to produce hydrogen using the power corresponding to the second CO2 emission amount in the hydrogen production plan, the hydrogen production apparatus produces hydrogen as per the hydrogen production plan, When selling hydrogen with the first CO2 emission amount in the case of a plan to produce hydrogen using the power corresponding to the second CO2 emission amount in the hydrogen production plan, the hydrogen production apparatus changes to the power corresponding to the first CO2 emission amount, or purchases a certificate of CO2 emission amount and changes the hydrogen produced to hydrogen with the first CO2 emission amount to produce hydrogen, The supply system according to claim 1, characterized in that.

6. A purchase system for assisting a customer in a hydrogen sales management system that assists hydrogen trading between a supplier who produces and sells hydrogen and a customer who purchases the hydrogen through a network, A transceiver unit capable of transmitting and receiving information to and from the supplier via the network, A message generation unit that generates demand presentation information including the amount of hydrogen desired to be purchased and the quality of hydrogen based on a hydrogen utilization plan including a prediction of hydrogen utilization, A condition determination unit that determines whether to purchase hydrogen based on the product presentation information replied by the supplier in response to the demand presentation information transmitted by the transceiver unit to the supplier, A planning unit that generates a utilization plan for the purchased hydrogen when the purchase request transmitted to the supplier is approved by the supplier when the determination unit decides to purchase hydrogen, A purchase system comprising.

7. The purchase system according to claim 6, characterized in that the transceiver unit transmits the demand presentation information to other customers other than itself.

8. When purchasing hydrogen with the first CO2 emission amount, the product presentation information includes hydrogen that is regarded as the hydrogen with the first CO2 emission amount but is actually hydrogen with a second CO2 emission amount higher than the first CO2 emission amount in addition to the hydrogen with the first CO2 emission amount. The purchasing system according to claim 6, characterized in that.

9. The purchasing system according to claim 6, characterized in that the condition determination unit receives from the user the date of hydrogen desired to be obtained, the amount of hydrogen, the label of hydrogen, or the CO2 emission amount.

10. The purchasing system according to claim 6, characterized in that the condition determination unit presents to the user a combination of products that satisfy the amount and quality of hydrogen desired by the customer among the product presentation information.

11. The purchasing system according to claim 6, further comprising an interface unit that displays product presentations of a plurality of suppliers that meet the conditions of hydrogen desired by the customer among the product presentation information.

12. In a hydrogen sales management system that supports hydrogen trading via a network between a supplier that manufactures and sells hydrogen and a customer that purchases the hydrogen, (1) A supply system that supports the supplier, A first transceiver unit capable of transmitting and receiving information to and from the customer via the network, A unit price calculation unit that calculates the production unit price of hydrogen for each quality of hydrogen based on the maximum hydrogen production amount and the quality of hydrogen produced by the supplier, A sales price calculation unit that calculates the sales unit price of hydrogen for each quality of hydrogen based on the production unit price of hydrogen for each quality of hydrogen, A first message generation unit that generates product presentation information including the amount of hydrogen that can be sold to the customer, the quality of hydrogen indicating the environmental load, and the sales price based on the sales unit price of hydrogen for each quality of hydrogen based on the demand presentation information indicating the hydrogen demand amount of the customer received by the transceiver unit, A first plan formulation unit that generates a hydrogen production plan corresponding to the product presentation information based on a purchase request returned by the customer in response to the product presentation information transmitted by the transceiver unit to the customer, A hydrogen production device that produces hydrogen using at least one of commercial power and renewable energy power based on the hydrogen production plan, A supply system comprising (2) A purchasing system that supports the customer, A second transceiver unit capable of transmitting and receiving information to and from the supplier via the network, A second message generation unit that generates demand presentation information including the amount of hydrogen desired to be purchased and the quality of the hydrogen based on a hydrogen utilization plan including a prediction of hydrogen utilization; A condition determination unit that determines whether to purchase hydrogen based on the product presentation information returned by the supplier in response to the demand presentation information transmitted by the transceiver to the supplier; A second planning unit that generates a utilization plan for the purchased hydrogen when the purchase request transmitted to the supplier is approved by the supplier when the determination unit determines to purchase hydrogen; A purchase system comprising: A hydrogen sales management system comprising:

13. The hydrogen sales management system according to claim 12, wherein the second transceiver transmits the demand presentation information to all suppliers and demanders belonging to the hydrogen sales management system; The first transceiver transmits the product presentation information to all suppliers and demanders belonging to the hydrogen sales management system A hydrogen sales management system characterized by:

14. The hydrogen sales management system according to claim 12, wherein the second transceiver transmits the demand presentation information to the supply system belonging to the supplier with whom the demander belonging to the purchase system has entered into a transaction contract, and to the purchase systems belonging to other demanders who have entered into a transaction contract with a common trading partner of the demander belonging to the purchase system; The first transceiver transmits the product presentation information to the purchase systems belonging to the demanders who have entered into a transaction contract with a common trading partner of the demander belonging to the purchase system, and to the supply systems belonging to other suppliers who are the common trading partners A hydrogen sales management system characterized by:

15. The network further includes a transporter that transports hydrogen from the supplier to the demander based on the purchase request; The product presentation information includes the amount of CO2 emissions generated when the transporter transports hydrogen A hydrogen sales management system according to claim 12, characterized by:

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