Environmental value management device

Abstract

To provide an environmental value management device that can more easily realize a user's demand.SOLUTION: An environmental value management device comprises a certificate required amount prediction unit 14 that indicates a predicted value of electric power demand from a user and the user's demand related to an environmental value of supplied power, and uses the predicted value and corresponding environmental value requirement information to calculate a procurement required amount that is the required amount of environmental values to be procured.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an environmental value management device that manages the environmental value of electricity. [Background technology]

[0002] As the global decarbonization progresses, the need to procure environmental value-attached electricity is increasing among consumers. If a consumer owns a power generation facility that generates renewable energy, the consumer can procure environmental value-attached electricity using the power generation facility that the consumer owns, but the desired amount of environmental value-attached electricity is not necessarily obtained from the electricity generated by the power generation facility that the consumer owns, and there may be a surplus of renewable energy generated by the power generation facility that the consumer owns.

[0003] On the other hand, it is now possible to separate the value of renewable energy generated by solar power generation facilities into electricity value, which is the value of the electricity itself, and environmental value, and to buy and sell these separately. In this way, by separating the electricity value from the environmental value, a wide range of players can procure the environmental value.

[0004] Patent Document 1 discloses a technology in which an electric power supplier server in an electric power supplier that supplies electric power to consumers manages an electric power value and an environmental value. The electric power supplier server described in Patent Document 1 accepts requests to purchase an environmental value from consumers who wish to purchase the environmental value, and encourages consumers who sell the electric power value of natural energy to sell the environmental value. In this way, the electric power supplier server described in Patent Document 1 can support the buying and selling of the environmental value. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2007-97347 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the technology described in Patent Document 1, the power supplier server calculates surplus environmental value from the amount of environmental value currently held by the power supplier or the expected amount of environmental value to be held in a specified period and the target amount of environmental value to be held, and sells the environmental value to the consumer if the calculated surplus environmental value is greater than the desired amount of environmental value, which is the amount of environmental value that the consumer wishes to sell. However, if the calculated surplus environmental value is equal to or less than the desired amount of environmental value, there is a problem that the consumer cannot purchase the environmental value and cannot secure the desired environmental value. For this reason, a technology that makes it easier to realize the wishes of consumers is desired.

[0007] The present disclosure has been made in consideration of the above, and aims to provide an environmental value management device that can make it easier for consumers' requests to be realized. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems and achieve the objectives, the environmental value management device disclosed herein includes a certificate required quantity prediction unit that indicates a predicted value of a consumer's electricity demand and the consumer's request regarding the environmental value of the electricity to be supplied, and calculates a procurement required quantity, which is the required amount of environmental value to be procured, using the predicted value and corresponding environmental value request information. Effect of the Invention

[0009] The environmental value management device according to the present disclosure has the effect of making it easier for consumers' requests to be realized. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing a configuration example of an environmental value management system according to an embodiment; [Diagram 2] FIG. 2 is a diagram showing an example of the configuration of an environmental value management device and a consumer device according to an embodiment; [Diagram 3] FIG. 2 is a diagram showing an example of customer information according to an embodiment; [Figure 4]1 is a flowchart showing an example of an environmental value management process according to an embodiment. [Diagram 5] FIG. 1 is a diagram showing an example of an environmental value supply and demand plan displayed by an environmental value management device according to an embodiment. [Figure 6] FIG. 13 is a diagram showing an example of a display screen that displays a planned value and an actual value in the embodiment. [Figure 7] FIG. 13 is a diagram showing an example of an allocation result displayed on a customer device according to an embodiment; [Figure 8] FIG. 1 is a diagram showing an example of a predicted value of the price of environmental value for each supplier according to an embodiment; [Figure 9] FIG. 1 is a diagram showing an example of association information according to an embodiment; [Figure 10] FIG. 1 is a diagram showing an example of the configuration of a computer system that realizes an environmental value management device according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] An environmental value management device, an environmental value management system, an environmental value management method, and a program according to the embodiments will be described in detail below with reference to the drawings.

[0012] Embodiment 1 is a diagram showing an example of the configuration of an environmental value management system according to an embodiment. An environmental value management system 8 of the present embodiment includes an environmental value management device 1 that manages the environmental value of electricity supplied to consumers, consumer devices 3-1 to 3-3 that can be operated by each consumer, and smart meters (hereinafter abbreviated as SM) 21-1 to 21-3 that are metering devices that measure the amount of electricity consumed by each consumer and are installed for automatic meter reading.

[0013] In the example shown in FIG. 1, consumer facility 2-1, which is facility installed at consumer #1, includes power generation facility 22 and load 23-1 connected to power distribution line 20 in the power system. Consumer facility 2-2, which is facility installed at consumer #2, includes load 23-2 connected to power distribution line 20 in the power system. Consumer facility 2-3, which is facility installed at consumer #3, includes power storage facility 24 and load 23-3 connected to power distribution line 20 in the power system. Consumers #1 to #3 are consumers that receive power from a retail electricity supplier that manages an environmental value management system 8. Loads 23-1 to 23-3 are facilities that consume power. Hereinafter, when the loads 23-1 to 23-3 are referred to without being individually distinguished, they will be referred to as loads 23, and when the consumer devices 3-1 to 3-3 are referred to without being individually distinguished, they will be referred to as consumer devices 3.

[0014] Although SM21-1 to 21-3 are not facilities owned by consumers #1 to #3, as described above, they are provided for each of consumers #1 to #3 to measure the power supplied. SM21-2 measures the amount of power consumed by load 23-2, and SM21-1 measures the amount of power obtained by subtracting the amount of power generated by power generation equipment 22 from the amount of power consumed by load 23-1. SM21-3 measures the amount of power consumed by load 23-3 and power storage equipment 24 when charging power storage equipment 24, and measures the amount of power consumed by load 23-3 minus the amount of power discharged by power storage equipment 24 when discharging power storage equipment 24. Note that in consumer #1, the amount of power generated by power generation equipment 22 and the amount of power consumed by load 23-1 may be measured separately. SM21-1 to 21-3 are an example of a plurality of metering devices that respectively measure the power demand of a plurality of consumers. Hereinafter, when SM21-1 to SM21-3 are referred to without being individually distinguished, they will be referred to as SM21.

[0015] Although three consumers, consumers #1 to #3, are illustrated in Fig. 1, the number of consumers to which the retail electricity supplier supplies power is not limited to the example shown in Fig. 1 and may be one or more. Furthermore, the configuration of the equipment at each consumer is not limited to the example shown in Fig. 1.

[0016] The metered value management device 4 collects metered results from SMs 21-1 to 21-3 and transmits the collected metered results to the environmental value management device 1. In Fig. 1, the metered results from SMs 21-1 to 21-3 are transmitted to the environmental value management device 1 via the metered value management device 4, but the route by which the environmental value management device 1 obtains the metered results of SMs 21-1 to 21-3 is not limited to this. In Fig. 1, the environmental value management device 1 obtains the metered results of SMs 21-1 to 21-3 as actual values ​​of the power demand and power generation amount at the consumer, but the actual values ​​of the power demand and power generation amount at the consumer obtained by the environmental value management device 1 are not limited to this, and actual values ​​measured by other devices, such as the power generation amount measured by a PCS (Power Conditioning System) in the power generation facility 22, may be used.

[0017] The environmental value management device 1 acquires the measurement results of SM21-1 to 21-3 via the metered value management device 4 as actual values ​​of the power demand and power generation amount of the consumer, and calculates the required amount of environmental value of each consumer based on the acquired actual values ​​and the power menu that each consumer has contracted with the retail electricity supplier. The power menu is information indicating the contents of the contract regarding the power supplied by the retail electricity supplier to each consumer, and includes information indicating the ratio of renewable energy (hereinafter also referred to as "renewable energy") in the power supplied. The power menu is an example of requested ratio information indicating a consumer's request regarding the ratio of renewable energy to the power supplied. The power menu may include information indicating a CO2 (carbon dioxide) emission coefficient (a numerical value indicating how many tons of CO2 are emitted per kWh of electricity). The requested ratio information and the CO2 emission coefficient are examples of environmental value request information indicating a consumer's request regarding environmental value. The environmental value request information includes, for example, at least one of the requested ratio information and the CO2 emission coefficient. The environmental value management device 1 creates a procurement plan for certificates of environmental value so as to procure certificates corresponding to the required amount of environmental value of each consumer, based on the calculated required amount of environmental value of each consumer.

[0018] The environmental value management device 1 also processes the transaction of environmental value between an environmental value market system 5 that processes transactions in the environmental value trading market, and an environmental value trader system 6 that is a trading partner of a bilateral contract for environmental value. The environmental value trader system 6 is a system that is managed and operated by a trading partner business operator. Here, an example is described in which the environmental value management device 1 processes transactions between the environmental value market system 5 and the environmental value trader system 6, but the transaction may be performed by a device other than the environmental value management device 1, or may be performed by a method other than electronic trading. Although one environmental value market system 5 is illustrated in FIG. 1, there may be multiple trading markets for environmental value, and an environmental value market system 5 may be provided for each trading market. Examples of trading markets for environmental value include, but are not limited to, a renewable energy value trading market, an advanced energy law obligation achievement market, and a J-credit trading market.

[0019] Fig. 2 is a diagram showing an example of the configuration of the environmental value management device 1 and the consumer device 3 of this embodiment. As shown in Fig. 2, the environmental value management device 1 of this embodiment includes a transmission / reception unit 10, a storage unit 11, an input reception unit 12, an electricity demand prediction unit 13, a certificate required amount prediction unit 14, a planning unit 15, a monitoring unit 16, a trading unit 17, an allocation unit 18, and a display unit 19.

[0020] The transmission / reception unit 10 communicates with other devices such as the metered value management device 4, the environmental value market system 5, the environmental value trader system 6, the power generation management device 7, and the consumer device 3. For example, the transmission / reception unit 10 receives the metered results of the SM21 of each consumer from the metered value management device 4, and stores the received metered results in the memory unit 11 as actual power demand values. The transmission / reception unit 10 also acquires information indicating the market price and bid price of the environmental value from the environmental value market system 5 and the environmental value trader system 6, and stores the information in the memory unit 11 as environmental value price information. The power generation management device 7 is a device that manages the amount of power generated by a power generation facility using renewable energy owned by a retail electricity supplier or an affiliate of a retail electricity supplier. The transmission / reception unit 10 stores the actual value of the amount of power generated received from the power generation management device 7 in the memory unit 11 as an actual non-fossil power generation value.

[0021] The storage unit 11 stores consumer information, actual power demand values, power demand forecast results, environmental value supply and demand forecast results, environmental value supply and demand plans, environmental value acquisition results, environmental value price information, and non-fossil power generation actual values. Consumer information includes information indicating the power menu with which each consumer has a contract. The power demand forecast results, environmental value supply and demand forecast results, environmental value supply and demand plans, and environmental value acquisition results will be described later.

[0022] FIG. 3 is a diagram showing an example of consumer information according to the present embodiment. In the example shown in FIG. 3, the consumer information includes an electric power menu for each consumer. FIG. 3 is an example, and the consumer information may further include information indicating a contracted power and power generation facilities owned by the consumer. The electric power menu includes information indicating a ratio of renewable energy. The electric power menu may include an electric power menu for which a corresponding reporting system is defined. Examples of the reporting system include, but are not limited to, SBT (Science Based Targets), RE (Renewable Energy) 100, and CDP (Carbon Disclosure Project). In addition, when a reporting system is specified by a consumer, the electric power menu may include information indicating the system, or the consumer information may include information indicating the system specified as an item separate from the electric power menu. The type of applicable certificate is determined by the reporting system.

[0023] The input reception unit 12 receives input from a user who operates the environmental value management device 1. The power demand prediction unit 13 predicts the power demand of each consumer for the planning period using the power demand actual value stored in the storage unit 11, and stores the prediction result in the storage unit 11 as a power demand prediction result. For a consumer who owns a power generation facility 22, the power demand actual value may be used to separate the actual value into power generation amount and power demand, and the power generation amount and power demand may be predicted using the separated result, and the predicted power demand minus the predicted power generation amount may be set as a predicted value of the power demand (power demand from the perspective of the retail electricity supplier). The planning period may be, for example, one year, half a year, quarter, one month, one hour, etc., but is not limited to these. An example in which the planning period is one year will be described below.

[0024] The certificate required quantity prediction unit 14 predicts the procurement required quantity, which is the required quantity of environmental value to be procured, using environmental value requirement information indicating the requirements of the consumers regarding environmental value and the predicted value of the consumer's electricity demand. For example, for a consumer whose requirements regarding environmental value are indicated by requirement ratio information, the certificate required quantity prediction unit 14 predicts the required quantity of environmental value of each consumer using the predicted value of electricity demand and the corresponding requirement ratio information, and for a consumer whose requirements regarding environmental value are determined by a CO2 emission coefficient, predicts the required quantity of environmental value of each consumer based on the predicted value of electricity demand and the corresponding CO2 emission coefficient. Then, the certificate required quantity prediction unit 14 sets the total value of the required quantities of environmental value of all consumers as the procurement required quantity. In detail, the certificate required quantity prediction unit 14 calculates the required quantity of environmental value of each consumer in the specified planning period using the electricity demand prediction result stored in the memory unit 11 and the consumer information stored in the memory unit 11, and stores the calculated required quantity of environmental value in the memory unit 11 as the environmental value demand prediction result. In addition, when the corresponding schemes differ depending on the electricity menu to be provided, the certificate required amount prediction unit 14 calculates the certificate required amount for each scheme.

[0025] The planning unit 15 creates a procurement plan for environmental value certificates so as to procure, within the planning period, environmental value certificates corresponding to the required amount of environmental value in the planning period. In detail, the planning unit 15 creates an environmental value supply and demand plan, which is a supply and demand plan for environmental value certificates, using the environmental value demand forecast result stored in the memory unit 11, and stores the created environmental value supply and demand plan in the memory unit 11. The supply and demand plan for environmental value certificates includes a procurement plan for environmental value certificates. In addition, when creating the environmental value supply and demand plan, the planning unit 15 may use the environmental value price information stored in the memory unit 11 to predict the price of environmental value for each procurement source such as each market and bilateral transaction in the planning period, and create the environmental value supply and demand plan so as to minimize costs using the predicted prices. In addition, when the electricity retailer managing the environmental value management device 1 owns a renewable energy power generation facility, or manages renewable energy generated by a power generation facility owned by a power generation facility owned by the electricity retailer's affiliated company, the environmental value of these renewable energies is also treated as one of the sources of procurement of the required amount of environmental value for each consumer as the self-procurement portion, and an environmental value supply and demand plan is created. In other words, the procurement source of the environmental value certificate may include the certification of electricity generated by a power source that generates electricity from renewable energy managed by the company that operates the environmental value management device. For example, the planning unit 15 predicts the amount of the certificates procured by the company based on the actual value of non-fossil power generation. Note that, when the electricity retailer does not have a renewable energy power generation facility or an affiliated company's renewable energy power generation facility, the self-procurement portion is not taken into consideration.

[0026] The monitoring unit 16 uses the environmental value supply and demand plan, the environmental value acquisition record indicating the certificates of environmental value already acquired during the planning period, and the power demand record value to compare the planned values ​​and actual values ​​for the demand forecast value and the purchase requirement of the certificate in the environmental value supply and demand plan, and if the planned value deviates from the actual value by more than a threshold value, displays an alarm on the display unit 19 and causes the power demand forecasting unit 13, the certificate required amount forecasting unit 14, and the planning unit 15 to execute reprocessing. After displaying the alarm, the monitoring unit 16 may cause the power demand forecasting unit 13, the certificate required amount forecasting unit 14, and the planning unit 15 to execute reprocessing when a command to re-execute the creation of the plan is received from the user via the input receiving unit 12.

[0027] After the end of the planning period, the allocation unit 18 allocates the certificates of environmental value procured corresponding to the planning period to each consumer. In detail, when the planning period ends and trading of the certificates corresponding to the environmental value corresponding to the planning period is completed, the allocation unit 18 allocates the acquired certificates to each consumer using the environmental value acquisition record stored in the storage unit 11, and stores the allocation result as part of the environmental value acquisition record in the storage unit 11. The allocation result to each consumer may be transmitted to the corresponding consumer device 3 via the transmission / reception unit 10, or may be sent to the consumer on paper.

[0028] The trading unit 17 performs trading processing between the environmental value market system 5 and the environmental value trader system 6 via the transmitting / receiving unit 10 in accordance with the environmental value supply and demand plan, and stores information about the certificate procured through the trading as an environmental value acquisition record in the memory unit 11. As described above, the trading processing may be performed by a device other than the environmental value management device 1, or may be performed by a method other than electronic trading.

[0029] The display unit 19 displays various types of information stored in the storage unit 11 based on instructions received by the input receiving unit 12 from the user.

[0030] The consumer device 3 includes a transmission / reception unit 31, an input reception unit 32, and a display unit 33. The transmission / reception unit 31 communicates with the environmental value management device 1. The input reception unit 32 receives input from the consumer. The display unit 33 performs various displays. For example, the input reception unit 32 receives input of information specifying an electricity menu to be contracted with an electricity retailer, and outputs the received information to the transmission / reception unit 31, which outputs the information to the environmental value management device 1. Also, for example, when the transmission / reception unit 31 receives an allocation result of an environmental value certificate from the environmental value management device 1, it outputs the allocation result to the display unit 33, and the display unit 33 displays the allocation result.

[0031] Next, the operation of this embodiment will be described. Fig. 4 is a flow chart showing an example of an environmental value management processing procedure of this embodiment. As shown in Fig. 4, the environmental value management device 1 predicts demand for an environmental value (step S1).

[0032] In detail, the power demand forecasting unit 13 forecasts the power demand of each consumer during the planning period using the actual power demand value stored in the storage unit 11, and stores the forecast result in the storage unit 11 as a power demand forecast result. For example, the measurement result of the SM21 is periodically transmitted from the measurement value management device 4, received by the transmission / reception unit 10, and stored in the storage unit 11 as a power demand actual value, so that the storage unit 11 accumulates past power demand actual values. As a method for forecasting power demand based on the actual power demand value, for example, a method using an average value for a certain period, such as an average value for each consumer in the past on a monthly basis, as a forecast value can be used, but any method can be used without being limited to this. Here, an example is described in which the planning period is set to one year and a forecast value of the power demand for each month is calculated. The certificate required amount forecasting unit 14 forecasts the required amount of environmental value of each consumer during the planning period using the actual power demand value stored in the storage unit 11 and the consumer information stored in the storage unit 11, and stores the forecasted required amount in the storage unit 11 as a result of environmental value demand forecast. As described above, the consumer information includes the electricity menu for each consumer, so the certificate required amount prediction unit 14 uses the electricity menu to calculate what percentage of each consumer's electricity demand should be renewable energy, and sets the calculated amount corresponding to the renewable energy as the predicted value for the required amount of environmental value. The certificate required amount prediction unit 14 stores the predicted value of the required amount of environmental value for each consumer and the procurement required amount, which is the total of the predicted values ​​of the required amount of environmental value for all consumers, in the memory unit 11 as the environmental value demand prediction result for each fixed period.

[0033] Note that, here, an example is described in which the environmental value management device 1 predicts the electricity demand, but another device (not shown) may predict the electricity demand, and the environmental value management device 1 may obtain the predicted value of the electricity demand from that device.

[0034] Next, the environmental value management device 1 creates a supply and demand plan for the certificate (step S2). In detail, the planning unit 15 uses the environmental value demand forecast result stored in the memory unit 11 to determine a planned value for the procurement amount of the certificate for each certain period so that the procurement required amount of the environmental value can be procured, and stores the environmental value supply and demand plan including the determined planned value in the memory unit 11. Note that there are multiple types of certificates related to environmental values, such as green power certificates, green heat certificates, renewable energy power-derived J-credits, renewable energy heat-derived J-credits, and non-fossil certificates, and non-fossil certificates are further classified according to whether or not they have attributes tracked by the government, and are also separated into FIT (Feed-in Tariff) / non-FIT certificates. In addition, as described in the "Guidance on Responding to International Climate Change Initiatives" (established in March 2019 and last revised in March 2021) formulated by the Ministry of Economy, Trade and Industry and the Ministry of the Environment, the types of certificates that can be used are determined for each reporting system related to renewable energy. For this reason, when there is an electricity menu that specifies a reporting system or when a reporting system is specified by a consumer, it is necessary to procure certificates corresponding to these reporting systems. For this reason, in this embodiment, the planning unit 15 calculates the required amount of certificates for each reporting system based on the predicted value of the required amount of environmental value and the consumer information, and determines a planned value of the procurement amount so that the required amount of the type of certificate corresponding to each reporting system can be procured. In other words, the planning unit 15 determines a planned value of the procurement amount of environmental value certificates for each reporting system. Note that in the prediction in step S1, the required procurement amount of environmental value may be calculated for each reporting system.

[0035] The planning unit 15 may further determine the source of procurement of the certificate, i.e., the procurement method. That is, the planning unit 15 may determine the planned value of the procurement amount of the environmental value certificate in the planning period for each source of procurement of the environmental value certificate. The procurement sources include various trading markets and bilateral contracts for the environmental value certificate. Also, as described above, when a retail electricity business operator or an affiliated company has renewable energy power generation facilities, the procurement of the certificate corresponding to the electricity generated by these power generation facilities may be included in the procurement sources as the company's procurement. Also, when there is a surplus of the certificates procured by the company, the planning unit 15 creates a supply and demand plan for the certificate so that the surplus is sold in the market or through a bilateral contract. The planning unit 15 does not have to determine the source of procurement of the certificate.

[0036] Each certificate includes the amount to be certified (power amount or CO2 emission reduction amount) and information indicating the power generation period corresponding to the certificate. When the planning period is longer than the power generation period, the creation period may be divided and managed so that a certificate for a power generation period corresponding to the period in which the required amount of the certificate occurs can be procured. For example, when the creation period is one year and the power generation period in the certificate is set in quarterly units, the planning unit 15 may create a plan so that the required amount of the certificate for each quarter is procured as the total amount in the certificate with the power generation period of that quarter. Note that there may be a time lag, such as six months, between the generation of renewable energy and the certification and the certificate being issued, and it may be difficult to match the power generation period in the certificate with the period in which the electricity was used. In such a case, the planning unit 15 may create an environmental value supply and demand plan so that the required amount of the certificate can be procured throughout the planning period without considering the power generation period.

[0037] Next, the environmental value management device 1 displays the supply and demand plan of the certificate (step S3). In detail, the display unit 19 reads out and displays the environmental value supply and demand plan stored in the storage unit 11. FIG. 5 is a diagram showing an example of the environmental value supply and demand plan displayed by the environmental value management device 1 of this embodiment. In the example shown in FIG. 5, the total required amount (total of predicted required amount) of the certificate for the planning period for each system (reporting system) corresponding to the electricity menu and the certificate type (type of certificate) corresponding to each reporting system are shown. Each certificate includes information indicating the amount of electricity or the amount of CO2 emission reduction. In the case of a certificate indicating the amount of CO2 emission reduction, it is converted into the amount of electricity based on the above-mentioned "Guidance on Responding to the International Climate Change Initiative". In addition, for a system in which the amount of CO2 emission reduction is reported, the predicted required amount is similarly converted into the amount of CO2 emission reduction. In this embodiment, since the total amount of certificates required for a plurality of consumers is predicted, even if there is an error in the predicted value of the power demand of an individual consumer, the amount of certificates required calculated from the predicted value of the power demand is calculated from the total power demand of the plurality of consumers, and the error is reduced by the smoothing effect. In the example shown in FIG. 5, among Schemes A, B, and C, Scheme A is the strictest, i.e., the number of applicable certificate types is the smallest, Scheme B has the next smallest number of applicable certificate types after Scheme A, and Scheme C has the largest number of applicable certificate types. The amount of certificates required for providing an electric power menu in accordance with Scheme A is the total value of the amount of certificates required for consumers who have selected an electric power menu in accordance with Scheme A. Similarly, the amount of certificates required for providing an electric power menu in accordance with Scheme B is the total value of the amount of certificates required for consumers who have selected an electric power menu in accordance with Scheme B, and the amount of certificates required for providing an electric power menu in accordance with Scheme C is the total value of the amount of certificates required for consumers who have selected an electric power menu in accordance with Scheme C.

[0038] In addition, although the total required amount of certificates for the planning period is shown in Fig. 5, the required amount of certificates for each fixed period may be further displayed. That is, for example, when the planning period is one year, the required amount for each fixed period may be displayed. Furthermore, the source of procurement of the certificates may be displayed. Fig. 5 is an example, and the display method and the display contents are not limited to the example shown in Fig. 5.

[0039] Returning to the explanation of Fig. 4, the environmental value management device 1 judges whether or not the conditions for the end processing of the planning period are satisfied (step S4). In detail, the allocation unit 18 judges whether or not the conditions for the end processing of the planning period are satisfied. The conditions for the end processing of the planning period are, for example, that the planning period has ended, the actual values ​​of the power demand in the planning period have been obtained, and the certificate transactions in the planning period have been completed.

[0040] If the conditions for the end processing of the planning period are not met (No in step S4), the environmental value management device 1 acquires the actual results (step S5). In detail, the monitoring unit 16 acquires the power demand actual value and the environmental value acquisition actual value from the memory unit 11. As described above, the transmitting and receiving unit 10 periodically receives the measurement results of SM21 from the measurement value management device 4 and stores them in the memory unit 11 as the power demand actual value, and every time an environmental value is traded, the transmitting and receiving unit 10 receives the transaction results and updates the environmental value acquisition actual value stored in the memory unit 11. The actual value of the certificate of in-house procurement is also recorded in the memory unit 11 as the environmental value acquisition actual value.

[0041] Next, the environmental value management device 1 judges whether the difference between the planned value and the actual value, that is, |planned value-actual value|, exceeds a threshold value (step S6). In detail, the monitoring unit 16 judges whether |planned value-actual value| exceeds a threshold value for each element. The elements are, for example, the required amount of certificates, that is, the required amount of environmental value certificates calculated from the power demand, the amount of certificates procured from the market, the amount of certificates procured for bilateral contracts, and the amount of certificates procured for in-house procurement. It is assumed here that the procurement source is also determined at the time of planning, and that the planned values ​​of the procurement amounts for the market, bilateral contracts, and in-house procurement are determined. The monitoring unit 16 judges Yes in step S6 if any one of these elements |planned value-actual value| exceeds a threshold value. It is assumed that each certificate includes the corresponding amount (power amount or CO2 emission reduction amount) and information indicating the power generation period corresponding to the certificate. With regard to the required amount for the certificate, the monitoring unit 16 calculates the actual value of the demand for environmental value, i.e., the required amount, from the start of the planning period to the present time using the actual electricity demand value and customer information stored in the memory unit 11, and calculates |planned value - actual value| using the calculated actual value and the predicted value of the required amount, which is the planned value from the start of the planning to the present time in the environmental value supply and demand plan.

[0042] If |Planned value-Actual value| exceeds the threshold value (Yes in step S6), the environmental value management device 1 displays an alarm (step S7), and the process from step S1 is performed again. In detail, in step S7, the monitoring unit 16 displays on the display unit 19 that a discrepancy has occurred between the planned value and the actual value, and therefore replanning is necessary, and also displays the planned value and the actual value. Then, the process from step S1 is performed again by instructing the power demand forecasting unit 13, the certificate required amount forecasting unit 14, and the planning unit 15 to perform reprocessing reflecting the actual value. Note that, after displaying the alarm, the monitoring unit 16 may instruct the power demand forecasting unit 13, the certificate required amount forecasting unit 14, and the planning unit 15 to perform reprocessing after receiving an instruction to re-create the plan from the user via the input receiving unit 12.

[0043] In this way, the planning unit 15 determines the planned value of the procurement amount of the certificate of environmental value for each procurement source for each period into which the planning period is divided, and the monitoring unit 16 instructs the certificate required amount prediction unit 14 and the planning unit 15 to reprocess the data by reflecting the actual value of the procurement amount for each procurement source when there is a procurement source for which the difference between the total planned value from the start of the planning period to the most recent period and the actual value of the procurement amount of the certificate of environmental value corresponding to the planning period is equal to or greater than a threshold value. The monitoring unit 16 also calculates the actual value of the required amount of environmental value from the start of the planning period to the most recent period using the actual value of the power demand of the consumer for the total period from the start of the planning period to the most recent period and the consumer information. Then, when the difference between the predicted value of the total required amount from the start of the planning period to the most recent period and the calculated actual value of the required amount is equal to or greater than a threshold value, the monitoring unit 16 instructs the certificate required amount prediction unit 14 and the planning unit 15 to reprocess the data by reflecting the actual value of the required amount, thereby recreating the procurement plan for the certificate of environmental value.

[0044] FIG. 6 is a diagram showing an example of a display screen displaying planned values ​​and actual values ​​in this embodiment. In the example shown in FIG. 6, the planned value and actual value of the total required amount of certificates for one year, which is the entire planning period, are shown on the left, and the planned value and actual value of the required amount of certificates for each month in the planning period are shown on the right. In FIG. 6, a non-hatched rectangle indicates a planned value, and a hatched rectangle indicates an actual value. Note that in the example shown in FIG. 6, it is assumed that there are also certificates procured by the company, and in 20XX / 07, the amount of the certificates procured by the company exceeds the required amount, resulting in a surplus. In FIG. 6, a negative value indicates a required amount, and a positive value indicates a surplus amount. Regarding the certificates procured by the company, sales are made when a surplus occurs throughout the year (even taking into account the forecast error), and sales are not made when, for example, a surplus occurs only in a certain month, but no surplus occurs throughout the year. That is, when the predicted value of the total amount of the environmental value corresponding to the electricity generated by the renewable energy power source of the company in the planning period is a certain amount or more more than the procurement necessary amount in the planning period, the planning unit 15 creates a plan to sell the certificate of the environmental value corresponding to the electricity generated by the renewable energy power source of the company. Note that FIG. 6 is an example, and the display method and the display contents are not limited to the example shown in FIG. 6.

[0045] Returning to the explanation of FIG. 4, if |planned value-actual value| is equal to or less than the threshold value (No in step S6), the environmental value management device 1 repeats the process from step S4. If the condition for the end process of the planning period is met (Yes in step S4), the environmental value management device 1 performs allocation processing (step S8), implements reporting processing (step S9), and ends the process. In detail, in step S8, the allocation unit 18 allocates the procured certificates according to the required amount of each consumer, and adds and stores the allocation result in the environmental value acquisition result in the memory unit 11. In step S9, the transmission / reception unit 10 transmits the allocation result for each consumer in the environmental value acquisition result stored in the memory unit 11 to the consumer device 3 of the corresponding consumer.

[0046] In this embodiment, as described above, the required amount of environmental value is calculated using the power menu contracted by the consumer and the predicted value of the consumer's power demand, and a supply and demand plan for environmental value is created so that the calculated required amount can be procured, thereby achieving the consumer's desire for environmental value. Furthermore, after the plan is created, if the deviation from the actual value becomes equal to or greater than a threshold value, the monitoring unit 16 recreates the supply and demand plan for environmental value by reflecting the actual value. Therefore, if the predicted value of power demand deviates from the actual value or the actual value of the certificate procurement deviates from the planned value, the plan can be realized over the entire planning period by reviewing the subsequent plan. Furthermore, during the planning period, the consumer may change the power menu contracted by the consumer, or the number of consumers contracted with the retail electricity supplier may increase or decrease. Due to these influences, even if the difference between the actual value and the planned value up to that point is small, the required amount after that may change. For this reason, the supply and demand plan for environmental value may be recreated even if the number of power menus, the number of consumers, etc., increases or decreases by more than a specified number. Furthermore, in this embodiment, a supply and demand plan for environmental value is created so that the total amount of environmental value required by multiple consumers can be procured, so that even if there is an error in the electricity demand forecast, the smoothing effect can reduce the impact of the error.

[0047] When the above-mentioned process is completed, the allocation result is displayed by the display unit 33 of the customer device 3. FIG. 7 is a diagram showing an example of the allocation result displayed on the customer device 3 of this embodiment. In the example shown in FIG. 7, the planning period is one year, and the certificate required amount (required amount of certificate of environmental value) of the customer and the allocation result are displayed for each quarter. As shown in FIG. 7, the allocation result includes the certificate type (type of certificate), the certificate serial number which is the identification number of the certificate, and the certificate allocation amount which is the amount certified in the certificate (electricity amount or CO2 emission reduction amount). FIG. 7 is an example, and the display method and the display contents are not limited to the example shown in FIG. 7. By displaying the allocation result, the customer can confirm that the certificate of the desired environmental value has been secured.

[0048] In the above-mentioned step S2, the predicted value of the price of the environmental value may be used for each supplier (transaction partner) of each market, bilateral contract, etc., to minimize the cost, or the timing of buying and selling the certificate may be determined so as to suppress the cost to a predetermined target value or less. That is, the planning unit 15 may determine the planned value of the procurement amount of the certificate of the environmental value for each supplier for each period into which the planning period is divided, so as to minimize the cost during the planning period, using the predicted result of the unit price of the certificate of the environmental value for each supplier. FIG. 8 is a diagram showing an example of the predicted value of the price (unit price) of the environmental value for each supplier in this embodiment. The predicted values ​​201 to 203 indicate the predicted value of the price of the environmental value for each different supplier. The price of the certificate for each certificate type depends on the supplier, the procurement time of the certificate, and the power generation period certified by the certificate, but the predicted result of the unit price of the certificate of the environmental value for each combination of the supplier and the procurement time of the certificate may be used without considering the power generation period. In the following, an example will be described in which the predicted result of the unit price of the environmental value certificate for each combination of the supplier and the certificate procurement time is used without considering the power generation period, but if a predicted result of the unit price of the environmental value certificate considering the power generation period is obtained, the power generation period may also be considered. The certificate required amount prediction unit 14 predicts the price of the environmental value based on the environmental value price information. Also, if a predicted value of the price of the environmental value can be obtained from an external source, the predicted value of the price of the environmental value obtained from an external source may be used. Also, although not shown in FIG. 8, the amount procured in-house generally costs less or is lower than other suppliers.

[0049] The planning unit 15 calculates, for each group of certificates, a predicted value of the price of the certificate at time T for the i-th transaction partner that can purchase the certificate, P i (T), and the amount of certificates procured from the i-th supplier (the amount certified by the certificate) is A i (T), A is calculated with the constraint of the following equation (2) so that F shown in the following equation (1) is minimized or F is equal to or less than the target value. iIn addition, when there are multiple systems corresponding to the power menu, the planning unit 15 determines A (T) for each certificate group, with respect to a supplier who can procure a certificate of a certificate type belonging to the certificate group, so that F shown in the following formula (1) is minimized or F is equal to or smaller than a target value, using the following formula (2) as a constraint condition. i (T) is defined. i Any algorithm may be used to calculate (T). Note that T is an integer that indicates the time for each period into which the planning period is divided. B(T) is the total required amount for each period of the certificate type corresponding to each certificate group, and C(T) is the company's certificate procurement amount, which is predicted, for example, from the actual value of non-fossil power generation. Also, Σ in formula (1) T indicates the total over the planning period, and Σ i For example, if the planning period is one year and the divided period is one month, T is an integer between 1 and 12, and Σ T indicates the total for 12 months. F=Σ T Σ i (P i (T)×A i (T)) …(1) Σ T Σ i (A i (T))=Σ T (B(T)-C(T)) …(2)

[0050] In the above formula, an example is shown in which the required amount of certificates is allocated with priority to the procurement of the company's own certificates, but the procurement of the company's certificates may also be allocated to one of the trading partners. In this case, B(T)-C(T) on the right side of the above formula (2) becomes B(T).

[0051] Furthermore, if the monitoring unit 16 determines that the discrepancy between the planned value and the actual value is large and that it is difficult to procure the necessary certificates during the planning period, the demand of the consumer may be reduced by DR (Demand Response). This reduces the demand of the consumer, and the required amount of environmental value certificates decreases, making it possible to secure the certificates according to the required amount.

[0052] In the above example, the environmental value management device 1 manages the environmental value of the electricity supplied to the consumer who has a contract with the retail electricity supplier, but the environmental value management device 1 of the present embodiment may be applied as a consumer's device. For example, the environmental value management device 1 may be introduced as a device of a large consumer such as a company or a local government. The environmental value management device 1 may be a device for a company that bundles a plurality of consumers (for example, a factory). In this case, for example, the environmental value management device 1 may use the predicted value of the consumer's electricity demand and the target value of the renewable energy ratio to determine the required amount of environmental value certificates, and similarly create a supply and demand plan for environmental value certificates during the planning period. In this case, if the consumer does not have a power generation facility, the consumer may purchase electricity from a retail electricity supplier or the like using an electricity menu that does not specify renewable energy, or may purchase electricity using an electricity menu with a renewable energy ratio of 20% or the like. In the former case, the environmental value management device 1 calculates the required amount by multiplying the predicted value of the consumer's electricity demand by the target value of the renewable energy ratio, and creates a supply and demand plan for environmental value so as to procure environmental value certificates corresponding to the required amount in the market or through a bilateral contract.In the latter case, the environmental value management device 1 calculates the required amount by multiplying the predicted value of the consumer's electricity demand by a ratio obtained by subtracting the ratio specified in the electricity menu from the target value of the renewable energy ratio, and creates a supply and demand plan for environmental value so as to procure environmental value certificates corresponding to the required amount in the market or through a bilateral contract.

[0053] In addition, when the environmental value management device 1 is applied as a consumer device, and the consumer has a power generation facility that generates electricity other than renewable energy and covers the consumer's electricity demand with the power generation facility, the environmental value management device 1 calculates the required amount by multiplying the predicted value of the consumer's electricity demand by the target value of the renewable energy ratio, and creates a supply and demand plan for environmental value to procure environmental value certificates corresponding to the required amount on the market or through a bilateral contract. In addition, when the consumer has a renewable energy power generation facility that generates renewable energy and covers the shortfall with a retail electricity supplier or other power generation facility, the environmental value management device 1 calculates the ratio of the amount of electricity generated by the renewable energy power generation facility to the consumer's electricity demand, calculates the required amount by multiplying the electricity demand by the value obtained by subtracting the calculated ratio from the target value of the renewable energy ratio, and creates a supply and demand plan for environmental value certificates to procure environmental value certificates corresponding to the required amount on the market or through a bilateral contract. Furthermore, when a surplus occurs in the environmental value from the consumer's renewable energy power generation facility, the environmental value management device 1 creates a supply and demand plan for environmental value certificates so as to sell the surplus in the market or through a bilateral contract.

[0054] In the above example, a case where a renewable energy power source is not specified has been described, but a power menu in which a renewable energy power source is specified may be provided. In this case, the required amount of the certificate corresponding to the consumer who has selected the power menu in which a renewable energy power source is specified is determined, for example, as follows. The renewable energy power source may be a power source managed by the consumer, or may be another power source. The certificate required amount prediction unit 14 predicts the amount of power generated for each power source (for each power plant) of the consumer's own power source, and predicts the amount of the certificate certified using the predicted amount of power generated. The certificate required amount prediction unit 14 predicts the amount of power generated for each power source of the consumer, for example, based on actual values. In addition, for the power sources of other companies, the certificate required amount prediction unit 14 predicts the amount of the certificate certified for each power source based on the procurement plan for power from the power source. In addition, for the consumer who has selected the power menu in which a power source is specified, the certificate required amount prediction unit 14 creates linking information linking (associating) the consumer with the specified power source, and registers it in the storage unit 11.

[0055] FIG. 9 is a diagram showing an example of the linking information of the present embodiment. As shown in FIG. 9, for example, the linking information includes a linking ID (IDentifier), a linking name indicating a power plant linked to a consumer, a priority, and information indicating the consumer and the power plant. FIG. 9 is an example, and the linking information is not limited to the format shown in FIG. 9, and may be any information that allows the power plant linked to the consumer to be understood. The certificate required amount prediction unit 14 calculates the power demand prediction result of each consumer who selects the power menu specifying the power source, the linking information, and the required amount of the certificate for each power plant. If the predicted value of the certified amount of the certificate for each power source during the planning period is equal to or greater than the required amount of the certificate corresponding to the power menu specifying the power source, the planning unit 15 creates an environmental value supply and demand plan so that the required amount of the certificate corresponding to the power menu specifying the power source is covered by the certificate of the power source. The planning unit 15 uses the linking information and the predicted value of the power demand of the consumer to create a procurement plan so that, for each power source, a certificate corresponding to the predicted value of the power demand of the consumer specifying the power source is procured as a certificate of the environmental value corresponding to the power source. For the power menus that do not specify a renewable energy power source, the planning unit 15 creates a procurement plan corresponding to each required amount of the certificate by the process described in FIG. 4. The monitoring unit 16 monitors the difference between the predicted value of the certified amount of the certificate and the required amount of the certificate corresponding to the power menu that specifies the power source for each power source, and manages the acceptance of new power menus that specify a power source so that the required amount of the certificate corresponding to the power menu that specifies the power source does not exceed the predicted value of the certified amount of the certificate. Note that in the example shown in FIG. 9, the priority is included in the linking information, but the priority does not have to be set. The priority indicates, for example, which power plant's environmental value is to be preferentially allocated to a consumer, but the use of the priority is not limited to this.

[0056] Next, the hardware configuration of the environmental value management device 1 of this embodiment will be described. In the environmental value management device 1 of this embodiment, a computer program in which the processing in the environmental value management device 1 is described is executed on a computer system, so that the computer system functions as the environmental value management device 1. FIG. 10 is a diagram showing an example of the configuration of a computer system that realizes the environmental value management device 1 of this embodiment. As shown in FIG. 10, this computer system includes a control unit 101, an input unit 102, a storage unit 103, a display unit 104, a communication unit 105, and an output unit 106, which are connected via a system bus 107.

[0057] In FIG. 10, the control unit 101 is a processor such as a CPU (Central Processing Unit), and executes a program in which the processing in the environmental value management device 1 of this embodiment is described. The input unit 102 is composed of, for example, a keyboard, a mouse, and the like, and is used by the user of the computer system to input various information. The storage unit 103 includes various memories such as a RAM (Random Access Memory), a ROM (Read Only Memory), and a storage device such as a hard disk, and stores the program to be executed by the control unit 101, necessary data obtained in the process of processing, and the like. The storage unit 103 is also used as a temporary storage area for the program. The display unit 104 is composed of a display, an LCD (Liquid Crystal Display Panel), and the like, and displays various screens to the user of the computer system. The communication unit 105 is a receiver and a transmitter that perform communication processing. The output unit 106 is a printer, a speaker, and the like. Note that FIG. 10 is an example, and the configuration of the computer system is not limited to the example of FIG. 10.

[0058] Here, an example of the operation of the computer system until the program of this embodiment is in an executable state will be described. In the computer system having the above-mentioned configuration, for example, a computer program is installed in the storage unit 103 from a CD-ROM or DVD-ROM set in a CD (Compact Disc)-ROM drive or DVD (Digital Versatile Disc)-ROM drive (not shown). Then, when the program is executed, the program read from the storage unit 103 is stored in the main storage area of ​​the storage unit 103. In this state, the control unit 101 executes the process as the environmental value management device 1 of this embodiment according to the program stored in the storage unit 103.

[0059] In the above explanation, a program describing the processing in the environmental value management device 1 is provided on a CD-ROM or DVD-ROM as a recording medium. However, this is not limited to this, and depending on the configuration of the computer system and the capacity of the program to be provided, for example, a program provided over a transmission medium such as the Internet via the communication unit 105 may be used.

[0060] The program of this embodiment, for example, causes a computer system to execute the steps of predicting a procurement requirement, which is the required amount of environmental value to be procured, using demand ratio information indicating consumer demand regarding the ratio of renewable energy to supplied electricity and a predicted value of the consumer's electricity demand, and creating a procurement plan for environmental value certificates so that environmental value certificates corresponding to the procurement requirement for the planning period are procured within the planning period.

[0061] The power demand forecasting unit 13, the certificate required amount forecasting unit 14, the planning unit 15, the monitoring unit 16, the trading unit 17, and the allocation unit 18 shown in FIG. 2 are realized by executing a computer program stored in the storage unit 103 shown in FIG. 10 by the control unit 101 shown in FIG. 10. The power demand forecasting unit 13, the certificate required amount forecasting unit 14, the planning unit 15, the monitoring unit 16, the trading unit 17, and the allocation unit 18 shown in FIG. 2 are realized by the storage unit 103 shown in FIG. 10. The storage unit 11 shown in FIG. 2 is a part of the storage unit 103 shown in FIG. 10. The transmission / reception unit 10 shown in FIG. 2 is realized by the communication unit 105 shown in FIG. 10. The input reception unit 12 shown in FIG. 2 is realized by the input unit 102 shown in FIG. 10. The environmental value management device 1 may be realized by a plurality of computer systems. For example, the environmental value management device 1 may be realized by a cloud computer system. The consumer device 3 is also realized by a computer system.

[0062] As described above, the environmental value management device 1 of this embodiment calculates the required amount of environmental value using the power menu with which the consumer has contracted and the predicted value of the consumer's electricity demand, and creates a supply and demand plan for environmental value so that the calculated required amount can be procured, thereby achieving the consumer's desire for environmental value.

[0063] The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, or the embodiments may be combined with each other. Also, parts of the configurations may be omitted or modified without departing from the spirit of the invention. [Explanation of symbols]

[0064] 1 Environmental value management device, 2-1 to 2-3 Customer equipment, 3-1 to 3-3 Customer equipment, 4 Measurement value management device, 5 Environmental value market system, 6 Environmental value trader system, 7 Power generation management device, 8 Environmental value management system, 10, 31 Transmitting / receiving unit, 11 Memory unit, 12, 32 Input reception unit, 13 Power demand forecasting unit, 14 Certificate required amount forecasting unit, 15 Planning unit, 16 Monitoring unit, 17 Trading unit, 18 Allocation unit, 19, 33 Display unit, 20 Distribution line, 21-1 to 21-3 SM, 22 Power generation equipment, 23-1 to 23-3 Load, 24 Energy storage equipment.

Claims

1. a certificate required quantity prediction unit that indicates a predicted value of a consumer's electricity demand and the consumer's request regarding the environmental value of the electricity to be supplied, and calculates a procurement required quantity, which is a required quantity of the environmental value to be procured, using the predicted value and environmental value request information corresponding to the predicted value; An environmental value management device comprising:

2. The environmental value management device of claim 1, characterized in that the certificate required amount prediction unit calculates the required amount of environmental value corresponding to each of the multiple consumers using the predicted value of the electricity demand of each of the multiple consumers and the corresponding environmental value request information, and sets the total value of the calculated amounts for the multiple consumers as the procurement required amount.

3. 3. The environmental value management device according to claim 1, wherein the environmental value request information includes at least one of information indicating a ratio of renewable energy to supplied electricity and a carbon dioxide emission coefficient.

4. A display unit that displays the procurement requirement; 4. The environmental value management device according to claim 1, further comprising:

Images