Storage control device, storage control method, and program

Abstract

To provide a storage control device, a storage control method and a program, which enable selection of power trading profit and loss computed based on storage battery capacity and power trading profit and loss computed based on renewable energy-based power generation capacity, so as to achieve a high carbon neutral rate within budget.SOLUTION: A storage control device is provided, comprising storage control means 10D configured to store first power trading profits and losses computed based on first respective capacities of storage batteries and renewable energy-based power generation in association with corresponding first carbon neutral rates in a storage unit.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a storage control device, a storage control method, and a program. [Background technology]

[0002] BACKGROUND ART Renewable energy power generation facilities such as solar cells and storage batteries that store electrical energy generated by renewable energy power generation facilities are sometimes installed in facilities such as homes, factories, and warehouses. For example, Patent Document 1 discloses that an evaluation value is calculated based on the electricity self-sufficiency rate (=carbon neutral rate) for the amount of power consumption expected in a home, the sales rate of electricity generated by solar cells and stored in storage batteries, and the operating rate of the storage batteries. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-54584 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology disclosed in Patent Document 1 makes it possible to avoid increased costs due to the installation of renewable energy power generation facilities and storage batteries with excessive performance in facilities, and to avoid generating more power than necessary. If renewable energy power generation facilities and storage batteries are installed in large facilities such as factories and warehouses, it is possible to recover the initial costs of installation over the long term by buying and selling excess electricity generated. However, in the case of facilities such as homes where the budget for installation is limited, it is necessary to achieve a higher carbon neutral rate within the budget.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a storage control device, a storage control method, and a program that can select the profit and loss on electricity sales calculated based on the respective capacities of power generation from storage batteries and renewable energy sources, so that a high carbon neutral rate can be achieved within budget. [Means for solving the problem]

[0006] A storage control device according to one embodiment of the present invention is characterized by comprising a storage control means for associating a first electricity trading profit and loss calculated based on a first capacity of each of the storage battery and power generation by renewable energy with a corresponding first carbon neutral rate and storing the same in a storage unit. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a storage control device, a storage control method, and a program that can select the profit and loss on electricity sales calculated based on the respective capacities of power generation from storage batteries and renewable energy sources, so that a high carbon neutral rate can be achieved within a budget. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a diagram illustrating an example of a hardware configuration of a control device according to the embodiment. [Figure 2] FIG. 2 is a diagram illustrating an example of a functional configuration of a control unit according to the embodiment. [Figure 3] 10 is an example of a list displayed on a display unit. [Figure 4] 1 is a flowchart of a selection process according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a control device according to an embodiment of the present invention will be described with reference to the drawings. The control device according to this embodiment is used to select the capacity of renewable energy power generation and the capacity of the storage battery when installing a renewable energy power generation facility and a storage battery for storing electrical energy generated by the renewable energy power generation facility in a facility such as a house, factory, or warehouse. Examples of renewable energy include solar, wind, hydroelectric, tidal, geothermal, and biomass. Hereinafter, the capacity of renewable energy power generation will be simply referred to as the power generation capacity.

[0010] When selecting the power generation capacity and storage battery capacity for a facility, the decision is made taking into consideration, for example, the carbon neutral rate, budget, and investment payback period. The carbon neutral rate is the so-called electricity self-sufficiency rate. In other words, the carbon neutral rate refers to the percentage of the facility's electricity consumption that can be covered by renewable energy generation capacity. The portion of the electricity used at the facility that cannot be covered by renewable energy generation capacity is made up by purchasing electricity from a power generation facility at the facility. For example, if the carbon neutral rate is 80%, 20% of the electricity used at the facility will be purchased. In this embodiment, the carbon neutral rate is calculated based on, for example, the total amount of power consumed in one year. In other words, in this embodiment, the carbon neutral rate is the proportion of the amount of power not purchased out of the total amount of power consumed in one year. The total amount of power consumed in one year at the facility, which is used to calculate the carbon neutral rate, is determined appropriately, for example, based on the facility's past performance or simulations. The control device according to this embodiment aims to easily select the power generation capacity and the storage battery capacity taking into consideration the above-mentioned factors.

[0011] (Control device) 1 is a diagram showing an example of the hardware configuration of a control device 100 according to an embodiment. The control device 100 includes a control unit 10 having a processor 10P such as a CPU (Central Processing Unit) and a memory 10M connected via a bus, and executes a control program. The control program is a program that controls the operation of each functional unit included in the control device 100. By executing the control program, the control device 100 functions as a device including the control unit 10, a user interface 20, and a storage unit 30.

[0012] More specifically, in the control device 100, the processor 10P reads out the control program stored in the storage unit 30 and stores the read control program in the memory 10M. The processor 10P executes the control program stored in the memory 10M, whereby the control device 100 functions as a device including the user interface 20, the control unit 10, and the storage unit 30.

[0013] The control unit 10 includes a processor 10P and a memory 10M. The control unit 10 controls the operation of each functional unit included in the control device 100. The control unit 10 includes, for example, each unit described below, and executes each process.

[0014] The user interface 20 includes a display unit 20D and an input unit 20I. The display unit 20D displays various types of information. The display unit 20D includes an output device such as a CRT (Cathode Ray Tube) display, a liquid crystal display, or an organic EL (Electro-Luminescence) display. The display unit 20D may be configured as an interface that connects these output devices to the control device 100.

[0015] The input unit 20I includes input terminals such as a mouse, keyboard, and touch panel. The input unit 20I may be configured as an interface that connects these input terminals to the control device 100. The input unit 20I accepts input of various information to the control device 100. The various information includes, for example, a target cost and a target carbon neutral rate, which will be described later.

[0016] The display unit 20D and the input unit 20I may be configured as an integrated touch panel.

[0017] The storage unit 30 is configured using a non-transitory computer-readable storage medium device such as a magnetic hard disk device or a semiconductor storage device. The storage unit 30 stores various information related to the control device 100. The storage unit 30 stores, for example, a control program in advance. The storage unit 30 also stores various information in the storage control means 10D, which will be described later.

[0018] FIG. 2 is a diagram illustrating an example of a functional configuration of the control unit 10 according to the embodiment. As shown in FIG. 2, the control unit 10 of the control device 100 includes a determination means 10A, a calculation means 10B, a calculation means 10C, a memory control means 10D, a reading means 10E, a control means 10F, an input means 10G, a designation means 10H, an extraction means 10I, an output means 10J, a notification means 10K, and a display control means 10L. The control unit 10 repeatedly performs the processes of each of the above-mentioned components, thereby selecting the optimum combination of power generation capacity and storage battery capacity from among multiple combinations based on the cost and carbon neutral rate required for the facility.

[0019] (Means of determination) The determination means 10A performs a determination process. The determination process by the determination means 10A is a process of newly determining the capacity of power generation by renewable energy and the capacity of a storage battery. Hereinafter, a combination of power generation capacity and storage battery capacity determined by one determination process will be simply referred to as a combination of power generation capacity and storage battery capacity. The combination of power generation capacity and storage battery capacity is generated, for example, by arranging numerical values ​​set for the power generation capacity and the storage battery capacity from an upper limit value to a lower limit value in increments of a predetermined value and appropriately combining these numerical values. Alternatively, the combination of power generation capacity and storage battery capacity may be generated, for example, by appropriately combining real numerical values ​​set for the power generation capacity and the storage battery capacity from an upper limit value to a lower limit value according to an optimization algorithm. A plurality of combinations of power generation capacity and storage battery capacity are generated by repeatedly performing the determination process. This allows the combination of power generation capacity and storage battery capacity used in the calculation processing described below to be changed as appropriate.

[0020] (calculation means) The calculation means 10B performs calculation processing. The calculation processing by the calculation means 10B is to calculate costs, specifically, to calculate the cost of power generation by renewable energy and the cost of the storage battery based on the power generation capacity and the storage battery capacity newly determined by the determination means 10A. In this embodiment, when there is no need to distinguish between the power generation cost and the storage battery cost, they may simply be referred to as costs. The cost of generating electricity from renewable energy includes, for example, the cost and installation cost of the renewable energy power generation facility, and the maintenance cost of the renewable energy power generation facility. The cost of the storage battery includes, for example, the cost of the storage battery, the cost of installing the storage battery, and the cost of maintaining the storage battery. The calculation process is repeated to perform calculations based on a plurality of combinations of power generation capacities and storage battery capacities. In the calculation process, the annual profit and loss on buying and selling electricity may be calculated from the power generation capacity, the storage battery capacity, and the amount of power consumption expected in the facility.

[0021] (Calculation method) The calculation means 10C performs a calculation process. The calculation process by the calculation means 10C is a process of calculating a carbon neutral rate based on the amount of power consumption expected in the facility and the power generation capacity and storage battery capacity newly determined by the determination means 10A. By repeatedly performing the calculation process, calculations are performed based on a plurality of combinations of power generation capacities and storage battery capacities.

[0022] (Storage control means) The storage control means 10D performs a storage control process. The storage control process by the storage control means 10D is a process of associating multiple pieces of information with each other and storing them in the storage unit 30. The multiple pieces of information stored in the storage unit 30 are, for example, the power generation capacity and storage battery capacity newly determined by the determination means 10A, the power generation and storage battery costs calculated by the calculation means 10B, and the carbon neutral rate calculated by the calculation means 10C. In the storage control process, the storage control means 10D associates the above-mentioned pieces of information with each other and stores them in the storage unit 30. This makes it easier to perform, for example, the process of creating a table using each of the above-mentioned pieces of information. By repeatedly performing the storage control process, the above-mentioned information relating to a plurality of combinations of power generation capacity and storage battery capacity is stored in the storage unit 30. This makes it easier to select the optimal combination of power generation capacity and storage battery capacity.

[0023] (Reading means) The reading means 10E performs a reading process. The reading process by the reading means 10E is a process of reading from the storage unit 30 the costs calculated by the calculation means 10B and the carbon neutral rates corresponding to the costs that are stored in the storage unit 30. The information read from the storage unit 30 by the reading means 10E is used in the display control process, which will be described later. By repeatedly performing the read process, each of the above-mentioned information relating to the plurality of combinations of power generation capacity and storage battery capacity stored in the storage control process is read out.

[0024] (Control means) The control means 10F controls the above-mentioned components. That is, the control means 10F repeatedly executes the determination process by the determination means 10A, the calculation process by the calculation means 10B, the calculation process by the calculation means 10C, the storage control process by the storage control means 10D, and the read process by the read means 10E. In particular, when repeatedly performing the decision process, multiple combinations of power generation capacity and storage battery capacity are generated, allowing the control device 100 to implement an optimization algorithm such as the downhill simplex method, with the carbon neutral rate as the constraint and cost as the objective function. Furthermore, by repeatedly performing the storage control process and the readout process, the display control means 10L can process various information to be displayed on the display unit 20D in the display control process described below. Furthermore, the results of each process using multiple combinations of power generation capacity and storage battery capacity can be compared and examined.

[0025] (Input means) The input means 10G performs input processing. The input processing by the input means 10G is processing for inputting a target cost. In other words, the input processing is processing in which the input means 10G transmits information on the target cost to the display control means 10L. The target cost is determined, for example, by a user of the control device 100 inputting the target cost to the control unit 10 via the input unit 20I. The input unit 10G appropriately converts the target cost information determined by the user in this manner and transmits it to the display control unit 10L. The target cost information transmitted to the display control unit 10L is used in the display control process described below.

[0026] (Designation means) The designation means 10H performs designation processing. The designation processing by the designation means 10H is processing for designating a target carbon neutral rate. In other words, the designation processing is processing in which the designation means 10H transmits information about the target carbon neutral rate to the display control means 10L. The target carbon neutral rate is determined, for example, by a user using the control device 100 inputting the rate into the control unit 10 via the input unit 20I. The designation means 10H appropriately converts the information on the target carbon neutral rate determined by the user in this manner and transmits it to the display control means 10L. The information on the target carbon neutral rate transmitted to the display control means 10L is used in the display control process described below.

[0027] (extraction means) The extraction means 10I performs extraction processing. The extraction processing by the extraction means 10I is processing to extract the same carbon neutral rate from among the carbon neutral rates repeatedly read out by the readout means 10E. The extraction processing is performed before the display control processing described later.

[0028] (output means) The output means 10J performs output processing. The output processing by the output means 10J is processing to output any of the following information according to the power generation capacity and storage battery capacity newly determined by the determination means 10A. That is, in the output process, for example, the peak amount of electricity purchased by the facility is output. Alternatively, in the output process, the amount of electricity purchased by the facility may be output. The peak amount of electricity purchased by a facility is the maximum 30-minute value of the facility's annual power consumption. The peak amount of electricity purchased by a facility determines, for example, the contract fee for the facility's annual power purchases. The amount of electricity purchased by the facility refers to the total amount of electricity (kWh) purchased by the facility in a year. The amount of electricity purchased by the facility determines, for example, the electricity price for a year. The output process is performed before the notification process by the notification means 10K, which will be described next.

[0029] (Notification means) The notification means 10K performs notification processing. The notification processing by the notification means 10K is processing for notifying the period required to recover the cost of the storage battery calculated by the calculation means 10B. When the aforementioned output means 10J outputs the peak amount of electricity purchased by the facility in the output processing, the notification processing notifies the period required to recover the cost of the storage battery based on the costs of power generation and storage battery calculated by the calculation means 10B, the cost required to purchase electricity at the facility, and the cost according to the peak output by the output means 10J. When the aforementioned output means 10J outputs the amount of electricity to be purchased by the facility in the output process, the notification process notifies the period required to recover the cost of the storage battery based on the costs of power generation and storage battery calculated by the calculation means 10B and the amount of electricity to be purchased by the facility. The notification process is performed before the display control process, which will be described later.

[0030] (Display control means) The display control means 10L performs display control processing. The display control processing by the display control means 10L is processing for displaying various information on the display unit 20D. This allows the user of the control device 100 to visually check various information. The information displayed on the display unit 20D is, for example, the cost calculated by the calculation means 10B and the carbon neutral rate corresponding to the cost, which are read from the memory unit 30 in the read process. In addition to this, the display control means 10L may also appropriately associate and display on the display unit 20D, for example, the target cost input in the input process, the target carbon neutral rate specified in the specification process, the peak amount of electricity purchased at the facility or the amount of electricity purchased at the facility output in the output process, and the period required to recover the cost of the storage battery notified in the notification process.

[0031] FIG. 3 is an example of a list displayed on the display unit 20D. In the display control process, the display control means 10L lists the various pieces of information described above to make them information that can be displayed on the display unit 20D. That is, for example, as shown in Fig. 3, information on the power generation capacity and storage battery capacity related to the result of the determination process, the cost related to the result of the calculation process, the annual maintenance cost and the annual profit and loss on buying and selling electricity, the carbon neutral rate related to the result of the calculation process, and the payback period related to the result of the notification process are listed and displayed on the display unit 20D. Below, several specific examples of the display control process will be described.

[0032] (First example of display control processing) The display control means 10L prevents the display unit 20D from displaying, among the costs and the carbon neutral rates corresponding to those costs repeatedly read out by the readout means 10E, any costs that exceed the target cost input by the input means 10G. This makes it possible to more reliably select, within budget, the renewable energy power generation capacity and storage battery capacity that can achieve a high carbon neutral rate for the amount of power consumption expected in the facility.

[0033] (Second example of display control processing) The display control means 10L causes the display unit 20D to display the costs repeatedly read out by the readout means 10E and the carbon neutral rates corresponding to those costs in descending order of the carbon neutral rates repeatedly read out by the readout means 10E. This makes it easier to select the capacity of power generation using renewable energy and the capacity of the storage battery while placing importance on the carbon neutral rate.

[0034] (Third example of display control processing) The display control means 10L prevents the display unit 20D from displaying, among the costs and carbon neutral rates corresponding to those costs repeatedly read out by the readout means 10E, those whose carbon neutral rates are lower than the target carbon neutral rate designated by the designation means 10H. This makes it possible to more reliably determine the carbon neutral rate that can be achieved with the renewable energy power generation capacity and storage battery capacity that can be selected within the budget.

[0035] (Fourth example of display control processing) The display control means 10L causes the display unit 20D to display, from among the multiple costs stored in the memory unit 30 in association with the carbon neutral rate extracted by the extraction means 10I, the cost having a lower total cost of power generation by renewable energy and storage batteries than the others. This makes it possible to select the capacity of power generation by renewable energy and the capacity of storage batteries so that a high carbon neutral rate can be achieved at a lower cost for the amount of power consumption expected in the facility.

[0036] (Fifth example of display control processing) The display control means 10L displays on the display unit 20D the multiple costs stored in the memory unit 30 in association with the carbon neutral rate extracted by the extraction means 10I, in ascending order of the costs stored in the memory unit 30 in association with the carbon neutral rate extracted by the extraction means 10I.This makes it possible to select the power generation capacity using renewable energy and the capacity of the storage battery so that a high carbon neutral rate can be achieved at a lower cost for the amount of power consumption expected in the facility.

[0037] (Sixth example of display control processing) The display control means 10L causes the display unit 20D to display the costs and the carbon neutral rates corresponding to the costs repeatedly read out by the readout means 10E, arranged in predetermined value increments. At this time, for example, the carbon neutral rate is displayed in increments of 5% on the display unit 20D. Also, for example, the cost may be displayed in increments of 300 million yen on the display unit 20D. This makes it easier to grasp the carbon neutral rate.

[0038] (Selection process) Next, a process for selecting the power generation capacity and the storage battery capacity using the control device 100 according to this embodiment will be described. FIG. 4 is a flowchart of a selection process according to an embodiment. First, a determination process is performed to determine a new combination of power generation capacity and storage battery capacity. Next, calculation and computation processes are performed to calculate and compute the cost and carbon neutral rate. The cost and carbon neutral rate, together with the combination of power generation capacity and storage battery capacity, are stored in the memory unit 30 by the memory control process. The information stored in the storage unit 30 is read out by a read process and used in the processes described below. Each process from the determination process to the read process is repeatedly performed by the control means 10F. Using the information read by the read process, input process, designation process, extraction process, output process, and notification process are performed. In this way, various information used in the display control process is generated. The generated various information is displayed on the display unit 20D by the display control process. The user evaluates each of a plurality of combinations of power generation capacity and storage battery capacity using the information displayed on the display unit 20D by the display control process, and selects the optimum combination. Through the above process, a plurality of combinations of power generation capacity and storage battery capacity are selected.

[0039] As described above, in the control device 100 according to this embodiment, the calculation means 10B calculates the costs of power generation by renewable energy and storage batteries based on the power generation capacity and the storage battery capacity. The calculation means 10C calculates the carbon neutral rate based on the power consumption amount expected in the facility, the power generation capacity, and the storage battery capacity. Then, the determination means 10A newly determines the power generation capacity by renewable energy and the storage battery capacity to be used in the calculation process by the calculation means 10B and the calculation process by the calculation means 10C. As a result, by repeating the above-mentioned processes while appropriately changing the power generation capacity and storage battery capacity determined by the determination means 10A, it is possible to select the power generation capacity using renewable energy and the storage battery capacity so that a high carbon neutral rate can be achieved within the budget for the amount of power consumption expected in the facility.

[0040] Furthermore, the storage control means 10D associates the cost calculated by the calculation means 10B with the carbon neutral rate calculated by the calculation means 10C and stores them in the storage unit 30. Then, the control means 10F repeatedly executes the determination process by the determination means 10A, the calculation process by the calculation means 10B, the calculation process by the calculation means 10C, and the storage control process by the storage control means 10D. This makes it easier to compare the calculations and calculation results for multiple combinations of power generation capacity and storage battery capacity. Therefore, the selection of renewable energy power generation capacity and storage battery capacity can be performed more efficiently.

[0041] Furthermore, the readout means 10E reads out from the memory unit 30 the costs calculated by the calculation means 10B and the carbon neutrality rates corresponding to the calculated costs, which are stored in the memory unit 30. The readout process by the readout means 10E is repeatedly executed by the control means 10F, along with the determination process by the determination means 10A, the calculation process by the calculation means 10B, the calculation process by the calculation means 10C, and the storage control process by the storage control means 10D. Then, the display control means 10L displays the costs and the carbon neutrality rates corresponding to the costs repeatedly read out by the readout means 10E on the display unit 20D, sorting them in descending order of carbon neutrality rate. This makes it easier to select the capacity of power generation by renewable energy and the capacity of the storage battery, while placing importance on the carbon neutrality rate.

[0042] Furthermore, the input means 10G inputs the target cost. Then, the display control means 10L prevents the display unit 20D from displaying, among the costs and the carbon neutral rates corresponding to those costs repeatedly read out by the readout means 10E, any cost that exceeds the target cost input by the input means 10G. This makes it possible to more reliably select, within budget, the capacity of renewable energy power generation and the capacity of storage batteries that can achieve a high carbon neutral rate for the amount of power consumption expected in the facility.

[0043] Furthermore, the designation means 10H designates a target carbon neutral rate. Then, the display control means 10L prevents the display unit 20D from displaying, among the costs and carbon neutral rates corresponding to those costs repeatedly read out by the readout means 10E, those whose carbon neutral rates are lower than the target carbon neutral rate designated by the designation means 10H. This makes it possible to more reliably determine the carbon neutral rate that can be achieved with the renewable energy power generation capacity and storage battery capacity that can be selected within the budget.

[0044] Furthermore, the extraction means 10I extracts the same carbon neutral rate from among the carbon neutral rates repeatedly read out by the readout means 10E. Then, the display control means 10L causes the display unit 20D to display, from among the multiple costs stored in the memory unit 30 in association with the carbon neutral rates extracted by the extraction means 10I, the cost having a lower total cost of power generation by renewable energy and storage batteries than the others. This makes it possible to select the capacity of power generation by renewable energy and the capacity of storage batteries so that a high carbon neutral rate can be achieved at a lower cost for the amount of power consumption expected in the facility.

[0045] Furthermore, the extraction means 10I extracts the same carbon neutral rate from among the carbon neutral rates repeatedly read out by the readout means 10E. Then, the display control means 10L causes the display unit 20D to display, in ascending order, the multiple costs stored in the memory unit 30 in association with the carbon neutral rates extracted by the extraction means 10I. This makes it possible to select the capacity of power generation using renewable energy and the capacity of the storage battery so that a high carbon neutral rate can be achieved at a lower cost for the amount of power consumption expected in the facility.

[0046] Furthermore, the display control means 10L displays the costs repeatedly read out by the readout means 10E and the carbon neutral rates corresponding to the costs in a predetermined value increment on the display unit 20D, thereby making it easier to grasp the carbon neutral rate.

[0047] Furthermore, the storage control means 10D associates the power generation capacity, power generation cost, storage battery capacity, storage battery cost, and carbon neutral rate, and stores them in the storage unit 30. This allows each of the above-mentioned items to be associated with each other and easily managed. Therefore, for example, it is possible to easily perform the process of creating a table using each of the above-mentioned items by the display control means 10L.

[0048] Furthermore, output means 10J outputs the peak amount of electricity purchased by the facility according to the power generation capacity and the storage battery capacity. Then, notification means 10K notifies the period required to recover the cost of the storage battery calculated by calculation means 10B based on the power generation and storage battery costs calculated by calculation means 10B, the cost required to purchase electricity at the facility, and the cost according to the peak amount of electricity purchased output by output means 10J. This makes it easier to select a power generation capacity and storage battery capacity using renewable energy that can achieve a high carbon neutral rate for the amount of power consumption expected at the facility, within budget and while emphasizing a predetermined payback period.

[0049] Furthermore, the output means 10J outputs the amount of electricity to be purchased at the facility according to the power generation and storage battery capacities. Then, the notification means 10K notifies the period required to recover the cost of the storage battery calculated by the calculation means 10B based on the power generation and storage battery costs calculated by the calculation means 10B and the amount of electricity to be purchased at the facility output by the output means 10J. This makes it easy to confirm the payback period for the initial cost according to the power generation capacity by the selected renewable energy and the storage battery capacity.

[0050] (Second embodiment) Next, a second control device 200 according to a second embodiment of the present invention will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted, with only the differences being described. The second control device 200 is the same as the control device 100 in that it functions as a device including a control unit 10, a user interface 20, and a storage unit 30 by executing a control program. The control unit 10 of the second control device 200 includes a determination means 10A, a calculation means 10C, a memory control means 10D, a reading means 10E, a control means 10F, an input means 10G, a designation means 10H, an extraction means 10I, an output means 10J, a notification means 10K, and a display control means 10L. In other words, the control unit 10 of the second control device 200 differs from the control device 100 in that it does not include the calculation means 10B. In the second embodiment, the costs of power generation by renewable energy and storage batteries are calculated, for example, using an estimated amount calculated separately by the user. That is, in the second embodiment, the costs calculated by the calculation process according to the first embodiment are input by the user to the control means 10F via the input unit 20I. The other processes are performed in the same manner as in the first embodiment. In the above respects, the second control device 200 differs from the control device 100.

[0051] As described above, according to the second control device 200 of the second embodiment, the calculation means 10C calculates the carbon neutral rate based on the amount of power consumption, power generation capacity, and storage battery capacity expected in the facility. Then, the determination means 10A newly determines the capacity of power generation by renewable energy and the capacity of storage battery to be used in the calculation process by the calculation means 10C described above. This makes it possible to select the capacity of power generation by renewable energy and the capacity of storage battery so that a high carbon neutral rate can be achieved within the budget for the amount of power consumption expected in the facility.

[0052] Furthermore, the memory control means 10D associates the power generation capacity and storage battery capacity newly determined by the determination means 10A with the carbon neutral rate calculated by the calculation means 10C and stores them in the memory unit 30. Then, the control means 10F repeatedly executes the determination process by the determination means 10A, the calculation process by the calculation means 10C, and the storage control process by the memory control means 10D. This makes it easier to compare the calculation results for multiple combinations of power generation capacity and carbon neutral rate. Therefore, the selection of the power generation capacity and storage battery capacity using renewable energy can be performed more efficiently.

[0053] Furthermore, the readout means 10E reads out from the memory unit 30 the power generation capacity and storage battery capacity stored in the memory unit 30, and the carbon neutral rate corresponding to the power generation capacity and storage battery capacity, which is stored in the memory unit 30. The readout process by the readout means 10E is repeatedly executed by the control means 10F, along with the determination process by the determination means 10A, the calculation process by the calculation means 10C, and the storage control process by the storage control means 10D. Then, the display control means 10L displays the power generation capacities and carbon neutral rates corresponding to the power generation capacities repeatedly read out by the readout means 10E on the display unit 20D, sorting them in descending order of carbon neutral rate. This makes it easier to select the power generation capacity and storage battery capacity using renewable energy, while placing importance on the carbon neutral rate.

[0054] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, all or part of the functions of the control device 100 may be realized using hardware such as an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array). The program may be recorded on a computer-readable recording medium. Examples of computer-readable recording media include portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into computer systems. The program may be transmitted via a telecommunications line.

[0055] In addition, within the scope of the spirit of the present invention, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described modifications may be combined as appropriate. [Explanation of symbols]

[0056] 10 Control Unit 10A Determining means 10B Calculation means 10C calculation method 10D Storage control means 10E Reading means 10F Control Means 10G input means 10H Specifying means 10I Extraction means 10J output means 10K notification method 10L Display control means 10M memory 10P processor 20 User Interface 20D display 20I Input section 30 Storage section 100 control device 200 Second control device

Claims

1. a storage control means for storing in a storage unit a first electricity trading profit and loss calculated based on a first capacity of each of the storage battery and the power generation by renewable energy, in association with a corresponding first carbon neutral rate; A storage control device comprising:

2. the storage control means stores in the storage unit a first cost of power generation by the storage battery and a first cost of power generation by the renewable energy, the first electricity trading profit and loss, and the first carbon neutral rate corresponding to the first electricity trading profit and loss, in association with each other; 2. The storage control device according to claim 1.

3. a readout means for reading out from the storage unit the first cost stored in the storage unit, the first electricity trading profit and loss stored in the storage unit, and the first carbon neutral rate stored in the storage unit; a display control means for displaying the first cost, the first electricity trading profit and loss, and the first carbon neutral rate read by the reading means on a display unit; 3. The storage control device according to claim 2, further comprising:

4. The first cost includes an installation cost of the storage battery and an installation cost of the renewable energy power generation facility.

4. The storage control device according to claim 2 or 3.

5. the storage control means stores in the storage unit a second cost of each of the power generation by the storage battery and the renewable energy, a second power purchase profit and loss calculated based on a second capacity of each of the power generation by the storage battery and the renewable energy, and a second carbon neutral rate corresponding to the second power purchase and loss, in association with each other; the reading means reads out from the storage unit the second cost stored in the storage unit, the second electricity buying and selling profit and loss stored in the storage unit, and the second carbon neutral rate stored in the storage unit; the display control means causes the display unit to display the first cost, the first electricity trading profit and loss, and the first carbon neutral rate read by the reading means, and the second cost, the second electricity trading profit and loss, and the second carbon neutral rate read by the reading means; 4. The storage control device according to claim 3.

6. The first cost and the second cost each include an installation cost of the storage battery and an installation cost of the renewable energy power generation facility.

6. The storage control device according to claim 5.

7. a storage control step of associating a first electricity trading profit and loss calculated based on the capacity of the storage battery and the capacity of power generation by renewable energy with a corresponding first carbon neutral rate and storing the same in a storage unit; A storage control method comprising:

8. A program that causes a computer to function as the storage control device according to any one of claims 1 to 3.

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