Derivation device, derivation method, and program for building a carbon-free society

Abstract

A derivation device, a derivation method, and a program are provided that allow for easy deriving of Scope 3 GHG emissions. [Solution] The derivation device 100 comprises an identification unit 102 which is a first identification unit that identifies at least one category associated with the industry of the main business operator by referring to first related information, a second identification unit that identifies an industry related to at least one category by referring to second related information, and a third identification unit that identifies other businesses that fall into an industry related to at least one category and are involved in the activities of the main business operator by referring to third related information; an output unit 104 that outputs a request message to the identified other businesses requesting them to provide values ​​for items that should be entered in at least one category; and a derivation unit 106 that receives the request message and derives other indirect emissions for at least one category based on the values ​​accepted from the other businesses.

Description

[Technical Field]

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

[0002] Patent Document 1 discloses a carbon dioxide emission calculation system that calculates the carbon dioxide emission amount for each electrical appliance. [Prior art document] [Patent Documents] [Patent Document 1] JP 2013-25487 A Summary of the Invention

[0003] A derivation device according to one aspect of the present invention may be a device that derives direct emissions, which indicate greenhouse gas emissions directly emitted by a business, and other indirect emissions, which indicate greenhouse gas emissions due to the business's activities that are not included in indirect emissions, which indicate greenhouse gas emissions indirectly emitted through the business's energy purchases. The derivation device may include a first identification unit that identifies at least one category associated with the business's industry by referring to first related information that associates the business's industry with at least one category necessary for deriving other indirect emissions for the business's industry. The derivation device may include a second identification unit that identifies an industry associated with at least one category by referring to second related information that associates a category with an industry related to an item to be input for deriving other indirect emissions for the category. The derivation device may include a third identification unit that identifies other businesses that fall into an industry related to at least one category and are involved in the main business's activities by referring to third related information that associates the main business with other businesses involved in the main business's activities and the industries of the other businesses. The derivation device may include an output unit that outputs a request message to the identified other business entities, requesting them to provide values ​​of items to be input in at least one category. The derivation device may include a derivation unit that receives the request message and derives other indirect emissions for at least one category based on the values ​​accepted from the other business entities.

[0004] If the output unit does not accept values ​​for items that should be entered in at least one category from the identified other business in response to the request message, it outputs a report message to the main business indicating that values ​​for items that should be entered in at least one category were not accepted from the identified other business.

[0005] The derivation device may further include a registration unit that registers values ​​of items to be input in at least one category received from the other business in the storage unit. If values ​​of items to be input in at least one category for the identified other business are already registered in the storage unit, the output unit may not output the request message, and the derivation unit may derive other indirect emissions for the at least one category based on the values ​​registered in the storage unit.

[0006] A derivation method according to one aspect of the present invention may be a method for deriving direct emissions, which indicate greenhouse gas emissions directly emitted by a business, and other indirect emissions, which indicate greenhouse gas emissions due to the business's activities that are not included in indirect emissions, which indicate greenhouse gas emissions indirectly emitted through the business's energy purchases. The derivation method may include a step of identifying at least one category associated with the business's industry by referring to first related information that associates the business's industry with at least one category necessary for deriving other indirect emissions for the business's industry. The derivation method may include a step of identifying an industry associated with at least one category by referring to second related information that associates categories with industries related to items to be input for deriving other indirect emissions for the category. The derivation method may include a step of identifying other businesses that fall into industries associated with at least one category and are involved in the main business's activities by referring to third related information that associates the main business with other businesses involved in the main business's activities and the industries of the other businesses. The derivation method may include a step of outputting a request message to the identified other enterprises, requesting them to provide values ​​for items to be input in at least one category. The derivation method may include a step of receiving the request message and deriving other indirect emissions for the at least one category based on the values ​​received from the other enterprises.

[0007] A program according to one embodiment of the present invention may cause a computer to function as a derivation device that derives direct emissions, which indicate greenhouse gas emissions directly emitted by a business, and other indirect emissions, which indicate greenhouse gas emissions resulting from the activities of a business that are not included in indirect emissions, which indicate greenhouse gas emissions indirectly emitted through the business's energy purchases. The program may cause the computer to function as a first identification unit that identifies at least one category associated with the business's industry by referencing first related information that associates the business's industry with at least one category necessary for deriving other indirect emissions for the business's industry. The program may cause the computer to function as a second identification unit that identifies an industry associated with at least one category by referencing second related information that associates a category with an industry related to an item to be input for deriving other indirect emissions for the category. The program may cause the computer to function as a third identification unit that identifies other businesses that fall into an industry related to at least one category and are involved in the activities of the main business by referencing third related information that associates the main business with other businesses involved in the main business's activities and the industries of the other businesses. The program may cause the computer to function as an output unit that outputs a request message to the identified other business entities, requesting them to provide values ​​for items to be entered in at least one category. The program may cause the computer to function as a derivation unit that receives the request message and derives other indirect emissions for at least one category based on the values ​​accepted from the other business entities.

[0008] The above summary of the invention does not list all of the features of the present invention, and subcombinations of these features may also be inventions. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a diagram illustrating an example of functional blocks of a derivation device. [Figure 2]FIG. 10 is a diagram showing an example of first association information that associates the business type of a company with at least one category required for deriving other indirect emissions in the business type of the company. [Figure 3] FIG. 10 is a diagram showing an example of second association information that associates a category with an industry type related to an item that should be input to derive other indirect emissions for the category. [Figure 4] FIG. 10 is a diagram showing an example of third association information that associates the business name and business type of the main business with the business names and business types of other businesses involved in the activities of the main business. [Figure 5] 1 is a flowchart showing an example of a procedure for deriving Scope 3 GHG emissions using a derivation device. [Figure 6] FIG. 2 illustrates an example of a hardware configuration. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the scope of the invention according to the claims. Furthermore, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0011] In recent years, efforts have been made to understand and manage corporate activities as a whole by calculating supply chain emissions, which represent not only a company's own greenhouse gas emissions (GHG emissions) but also all GHG emissions related to its business activities. Supply chain emissions refer to GHG emissions (thousands of t-CO2) generated by a company's organizational activities throughout the entire process, including raw material procurement, manufacturing, logistics, sales, and disposal. Supply chain emissions are comprised of Scope 1, Scope 2, and Scope 3. Scope 1 refers to direct emissions, which represent greenhouse gas emissions emitted directly by a company. Scope 2 refers to indirect emissions, which represent greenhouse gas emissions indirectly emitted by a company through energy purchases. Scope 3 refers to other indirect emissions, which represent greenhouse gas emissions emitted by a company's activities not included in Scope 1 direct emissions or Scope 2 indirect emissions.

[0012] In order to derive the GHG emissions of a primary business operator in Scope 3, it is necessary to understand the GHG emissions generated by the activities of other businesses (e.g., suppliers, affiliated companies, delivery destination companies, etc.) involved in the activities of the primary business operator (e.g., a manufacturer). However, it is not easy for the primary business operator to obtain the data necessary to derive the GHG emissions of other businesses.

[0013] Therefore, in this embodiment, a derivation device that makes it easy to derive Scope 3 GHG emissions is provided.

[0014] Scope 3 is further divided into 15 categories based on the activity. Category 1 refers to "purchased products and services." Category 2 refers to "capital goods." Category 3 refers to "fuel- and energy-related activities not included in Scope 1 or Scope 2." Category 4 refers to "upstream transportation and distribution." Category 5 refers to "waste generated from business activities." Category 6 refers to "business trips." Category 7 refers to "employee commuting." Category 8 refers to "upstream leased assets." Category 9 refers to "downstream transportation and distribution." Category 10 refers to "processing of sold products." Category 11 refers to "use of sold products." Category 12 refers to "disposal of sold products." Category 13 refers to "downstream leased assets." Category 14 refers to "franchises." Category 15 refers to "investments." Scope 3 also includes "other," which represents indirect GHG emissions not included in the 15 categories. "Other" GHG emissions include, for example, GHG emissions related to the daily lives of employees or consumers.

[0015] 1 shows an example of functional blocks of a derivation device 100. The derivation device 100 includes an identification unit 102, an output unit 104, a derivation unit 106, a registration unit 108, and a storage unit 110. The derivation device 100 derives the amount of GHG emissions generated by the activities of other businesses that are involved in the activities of the main business.

[0016] The storage unit 110 stores various information necessary to derive the amount of GHG emissions resulting from the activities of other businesses.

[0017] As described above, Scope 3 includes multiple categories. However, the category from which GHG emissions should be derived varies depending on the business type of the primary business operator. Therefore, as shown in FIG. 2, the storage unit 110 stores first association information that associates the business operator's business type with at least one category required to derive other indirect emissions for that business operator's business type.

[0018] Furthermore, depending on the type of category, the business types of other businesses that carry out activities involving GHG emissions related to that category differ. Therefore, the storage unit 110 stores second association information that associates categories with business types related to items that should be input to derive other indirect emissions for the category, as shown in Figure 3.

[0019] The storage unit 110 further stores third association information that associates, for each main business operator, the business name and business type of the main business operator with the business names and business types of other businesses involved in the activities of the main business operator, as shown in Fig. 4. The business operators' business types may be retail, construction, logistics, cement manufacturing, agriculture, steel, chemicals, communications, public service, etc. The business operators' business types may be industries defined by a predetermined classification such as the Japan Standard Industrial Classification.

[0020] The identifying unit 102 identifies at least one category in the industry of the main business operator that is necessary for deriving other indirect emissions, with reference to the first related information as shown in Fig. 2. Furthermore, the identifying unit 102 identifies the industry related to the identified at least one category with reference to the second related information as shown in Fig. 3. In other words, the identifying unit 102 identifies the industry of other business operators that perform activities related to GHG emissions that should be derived in the identified category.

[0021] The identification unit 102 identifies other businesses involved in the activities of the main business and the industries of the other businesses by referring to the third related information as shown in Fig. 4. Of the other businesses involved in the activities of the main business, the identification unit 102 identifies other businesses that correspond to the industry from which GHG emissions should be derived for the identified category.

[0022] The output unit 104 outputs a request message to the identified other business operators requesting them to input values ​​into items that should be input in at least one category.

[0023] The output unit 104 may output a request message indicating a predetermined formula for deriving the GHG emissions generated by activities related to the activities of the primary business operator to the identified other business operator.

[0024] For category 1, the output unit 104 may output a request message requesting the main business to input GHG emissions from the resource extraction stage to the manufacturing stage for products or services provided by other businesses.

[0025] For category 2, the output unit 104 may output a request message requesting the main business operator to input a value obtained by multiplying the weight, sales unit, or construction cost of the capital goods provided by the other business operator by the emission intensity unit.

[0026] For category 4, the output unit 104 may output a request message to other businesses in the transportation industry requesting them to input the amount of fuel used in activities related to the main business's activities or the value obtained by multiplying the transportation distance / fuel efficiency by the emission intensity, as an item necessary to derive the GHG emissions generated in activities related to the main business's activities.

[0027] For category 5, the output unit 104 may output a request message requesting input of a value obtained by multiplying the amount of waste processed or recycled by waste type and processing method by the emission intensity by waste type and processing method.

[0028] For category 9, the output unit 104 may output a request message requesting input of the amount of fuel used in activities related to the main business operator's activities, or the value obtained by multiplying the transportation distance / fuel consumption by the emission intensity.

[0029] For category 10, the output unit 104 may output a request message to other businesses, such as intermediate product sales businesses, involved in the activities of the main business, requesting them to enter the amount of GHG emissions associated with the processing of the intermediate product, or the value obtained by multiplying the amount of energy consumption associated with the processing of the intermediate product by the emission intensity.

[0030] For category 12, the output unit 104 may output a request message requesting input of a value obtained by multiplying the amount of waste processed or recycled by waste type and processing method by the emission intensity by waste type and processing method.

[0031] For category 13, the output unit 104 may output a request message requesting input of a value obtained by multiplying the consumption amount of each energy type in a leased asset rented to another company by the emission intensity of the energy type.

[0032] For Category 14, a request message may be output requesting the input of the aggregated value of Scope 1 and Scope 2 GHG emissions by investment obtained from other non-investors in proportion to the investment equity ratio.

[0033] The derivation unit 106 receives the request message and derives other indirect emissions for at least one category based on the values ​​received from the other businesses. For example, the derivation unit 106 may derive GHG emissions generated in activities related to the main business's activities by multiplying the amount of fuel used or the transportation distance / fuel efficiency by the emissions intensity. The derivation unit 106 receives the request message and may derive total other indirect emissions for all categories related to the main business by summing up the values ​​received from each of the other businesses.

[0034] In response to the request message, the identified other business may not provide values ​​for items that should be input in at least one category. Therefore, if the output unit 104 does not accept values ​​for items that should be input in at least one category from the identified other business in response to the request message, the output unit 104 may output a report message to the primary business indicating that values ​​for items that should be input in at least one category were not accepted from the identified other business. If the output unit 104 does not accept values ​​for items that should be input in at least one category from the identified other business within a predetermined period after outputting the request message, the output unit 104 may output a report message to the primary business indicating that values ​​for items that should be input in at least one category were not accepted from the identified other business. This allows the primary business to easily identify businesses that are not cooperative in deriving other indirect emissions. The primary business can easily identify other businesses that did not provide data necessary to derive other indirect emissions and use this information to make decisions, such as reconsidering whether to continue working with the other businesses.

[0035] The registration unit 108 registers in the storage unit 110 values ​​of items to be input for at least one category received from other businesses. The storage unit 110 may store values ​​of items already input for each business. Each value input by each business registered in the storage unit 110 may be stored in the storage unit 110 in a state accessible to each business logged in to the derivation device 100. If values ​​of items to be input for at least one category for another business identified by the identification unit 102 are already registered in the storage unit 108, the output unit 104 may not output a request message, and the derivation unit 106 may derive other indirect emissions for at least one category based on the values ​​registered in the storage unit 110. By sharing values ​​of items that have already been input between businesses, businesses do not need to input the same values ​​multiple times. This allows other indirect emissions for multiple main businesses to be quickly derived.

[0036] FIG. 5 is a flowchart showing an example of a procedure for deriving Scope 3 GHG emissions by the derivation device 100.

[0037] The identification unit 102 identifies the business type of the main business (S100). The identification unit 102 may receive the business type from the main business. For each business, an account associated with the business type of the business may be created in advance, and the main business may log in to the derivation device 100 using its own account. In this case, the identification unit 102 may identify the business type of the business associated with the currently logged-in account as the business type of the main business.

[0038] The identifying unit 102 refers to the first related information and identifies the Scope 3 category from which GHG emissions should be derived based on the industry of the identified primary business operator (S102). The identifying unit 102 refers to the second related information and identifies the industry related to the item to be entered in the identified category (S104).

[0039] The identification unit 102 identifies other businesses involved in the activities of the main business and the business types of the other businesses by referring to the third related information (S106). The identification unit 102 identifies other businesses to request input from among the other businesses involved in the activities of the main business, based on the business types related to the items to be input in the identified category (S108).

[0040] The output unit 104 outputs a request message to the identified other business operators requesting them to input items that should be input in the identified category (S110).

[0041] The other business may directly input into the derivation device 100 the items that are assigned to the other business among the items that should be input regarding the GHG emissions of the main business.

[0042] The other business operator may log in to the derivation device 100 using an account that has the authority to input the items assigned to the other business operator among the items that should be input about the GHG emissions of the main business operator, and then the other business operator may directly input the values ​​for the items assigned to the other business operator into the derivation device 100.

[0043] After the other business operator logs in to the derivation device 100 with the same account as the main business operator, the other business operator may directly input values ​​for the items assigned to the other business operator into the derivation device 100 .

[0044] Next, the derivation unit 106 receives the item values ​​from the other identified businesses (S112), and derives the GHG emissions amount for the relevant category based on the item values ​​(S114).

[0045] According to this embodiment, Scope 3 GHG emissions can be easily derived, reducing the burden on the main business operator.

[0046] 6 illustrates an example of a computer 1200 in which aspects of the present invention may be embodied, in whole or in part. A program installed on the computer 1200 may cause the computer 1200 to perform operations associated with an apparatus according to an embodiment of the present invention or to function as one or more “parts” of the apparatus. Alternatively, the program may cause the computer 1200 to execute the operations or one or more “parts.” The program may cause the computer 1200 to execute a process or steps of a process according to an embodiment of the present invention. Such a program may be executed by the CPU 1212 to cause the computer 1200 to perform specific operations associated with some or all of the blocks in the flowcharts and block diagrams described herein.

[0047] The computer 1200 according to this embodiment includes a CPU 1212 and a RAM 1214, which are interconnected by a host controller 1210. The computer 1200 also includes a communication interface 1222 and an input / output unit, which are connected to the host controller 1210 via an input / output controller 1220. The computer 1200 also includes a ROM 1230. The CPU 1212 operates according to programs stored in the ROM 1230 and RAM 1214, thereby controlling each unit.

[0048] The communication interface 1222 communicates with other electronic devices via a network. A hard disk drive may store programs and data used by the CPU 1212 in the computer 1200. The ROM 1230 stores a boot program executed by the computer 1200 upon activation and / or programs dependent on the computer's hardware. The programs may be provided via a computer-readable recording medium such as a CD-ROM, USB memory, or IC card, or via a network. The programs may be installed in the RAM 1214 or the ROM 1230, which are also examples of computer-readable recording media, and executed by the CPU 1212. The information processing described in these programs is read by the computer 1200 and establishes cooperation between the programs and the various types of hardware resources described above. An apparatus or method may be configured by implementing operations or processing of information in accordance with the use of the computer 1200.

[0049] For example, when communication is performed between computer 1200 and an external device, CPU 1212 may execute a communication program loaded into RAM 1214 and instruct communication interface 1222 to perform communication processing based on the processing described in the communication program. Under the control of CPU 1212, communication interface 1222 reads transmission data stored in a transmission buffer area provided in RAM 1214 or a recording medium such as a USB memory, and transmits the read transmission data to a network, or writes reception data received from the network to a reception buffer area or the like provided on the recording medium.

[0050] The CPU 1212 may also cause all or a necessary portion of a file or database stored on an external recording medium such as a USB memory to be read into the RAM 1214, and perform various types of processing on the data on the RAM 1214. The CPU 1212 may then write the processed data back to the external recording medium.

[0051] Various types of information, such as various types of programs, data, tables, and databases, may be stored on the recording medium and may undergo information processing. The CPU 1212 may perform various types of processing on data read from the RAM 1214, including various types of operations, information processing, conditional judgment, conditional branching, unconditional branching, information search / replacement, etc., as described throughout this disclosure and specified by the instruction sequences of the programs, and write the results back to the RAM 1214. The CPU 1212 may also search for information in a file, database, etc. on the recording medium. For example, if multiple entries, each having an attribute value of a first attribute associated with an attribute value of a second attribute, are stored on the recording medium, the CPU 1212 may search for an entry that matches a condition specified by the attribute value of the first attribute from among the multiple entries, read the attribute value of the second attribute stored in the entry, and thereby obtain the attribute value of the second attribute associated with the first attribute that satisfies a predetermined condition.

[0052] The above-described programs or software modules may be stored in a computer-readable storage medium on or near the computer 1200. A recording medium such as a hard disk or RAM provided in a server system connected to a dedicated communication network or the Internet can also be used as a computer-readable storage medium, thereby providing the programs to the computer 1200 via the network.

[0053] A computer-readable medium may include any tangible device capable of storing instructions that are executed by an appropriate device. As a result, the computer-readable medium with instructions stored thereon comprises an article of manufacture, including instructions that can be executed to create means for performing the operations specified in the flowchart or block diagram. Examples of computer-readable media may include electronic storage media, magnetic storage media, optical storage media, electromagnetic storage media, semiconductor storage media, etc. More specific examples of computer-readable media may include floppy disks, diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), electrically erasable programmable read-only memory (EEPROM), static random access memory (SRAM), compact disc read-only memory (CD-ROM), digital versatile disc (DVD), Blu-ray (RTM) disc, memory stick, integrated circuit card, etc.

[0054] The computer-readable instructions may include either source code or object code written in any combination of one or more programming languages. The source code or object code includes conventional procedural programming languages. The conventional procedural programming languages ​​may be assembler instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state-setting data, or object-oriented programming languages ​​such as Smalltalk®, JAVA®, C++, etc., and the “C” programming language or similar programming languages. The computer-readable instructions may be provided to a processor or programmable circuitry of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus locally or over a wide-area network (WAN) such as a local area network (LAN), the Internet, etc. The processor or programmable circuitry may execute the computer-readable instructions to create means for performing the operations specified in the flowcharts or block diagrams. Examples of processors include computer processors, processing units, microprocessors, digital signal processors, controllers, microcontrollers, etc.

[0055] Although the present invention has been described above using embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the claims that such modifications and improvements can also be included within the technical scope of the present invention.

[0056] It should be noted that the execution order of each process, such as operations, procedures, steps, and stages, in the devices, systems, programs, and methods shown in the claims, specifications, and drawings is not specifically stated as "before," "prior to," etc., and that the processes can be performed in any order unless the output of a previous process is used in a subsequent process. Even if the operational flow in the claims, specifications, and drawings is described using "first," "next," etc. for convenience, this does not mean that the processes must be performed in this order. [Explanation of symbols]

[0057] 100 Derivation device 102 Specific section 104 Output section 106 Derivation part 110 Storage section 1200 Computer 1210 host controller 1212 CPU 1214 RAM 1220 Input / Output Controller 1222 communication interface 1230 ROM

Claims

1. A derivation device that derives other indirect emissions that indicate greenhouse gas emissions emitted by the activities of a business that are not included in direct emissions that indicate greenhouse gas emissions directly emitted by a business, and indirect emissions that indicate greenhouse gas emissions indirectly emitted by a business through the purchase of energy by the business, an industry identification unit that identifies the industry of other businesses involved in the activities of the main business by referring to third association information that associates the main business with other businesses and the industries of the other businesses involved in the activities of the main business; a category identification unit that identifies a category related to the industry identified by the industry identification unit by referring to second association information that associates a category with an industry related to an item that should be input to derive other indirect emissions for the category; a selection unit that references first association information that associates the business type of the business with at least one category necessary for deriving other indirect emissions in the business type of the business, and selects a category associated with the business type of the main business from the categories identified by the category identification unit; an output unit that outputs a request message to the other business operators requesting them to provide values ​​for items to be input for each category; a derivation unit that receives the request message and derives other indirect emissions for each of the categories based on the values ​​received from the other businesses; A derivation device comprising:

2. The derivation device according to claim 1, wherein, when the output unit does not accept the value of the item to be input from the identified other business operator in response to the request message, the output unit outputs a report message to the main business operator indicating that the value of the item to be input from the identified other business operator has not been accepted.

3. a registration unit that associates the values ​​of the items to be input received from other businesses with the categories and registers them in a storage unit; 3. The derivation device according to claim 1, wherein, when values ​​for items to be input for at least one category for the identified other business are already registered in the storage unit, the output unit does not output the request message, and the derivation unit derives other indirect emissions for the at least one category based on the values ​​registered in the storage unit.

4. A method for deriving other indirect emissions that indicate greenhouse gas emissions emitted by the activities of a business that are not included in direct emissions that indicate greenhouse gas emissions directly emitted by a business, and indirect emissions that indicate greenhouse gas emissions indirectly emitted by a business through the purchase of energy by the business, comprising: an industry identification step in which an industry identification unit identifies the industries of other businesses involved in the activities of the main business by referring to third association information stored in a storage unit, which associates the main business with other businesses and the industries of the other businesses involved in the activities of the main business; a category identification step in which the category identification unit refers to second association information that associates a category with an industry related to an item that should be input to derive other indirect emissions for the category, and identifies a category related to the industry identified in the industry identification step; a selection step in which a selection unit references first association information that associates the business type of the business with at least one category necessary for deriving other indirect emissions in the business type of the business, and selects a category associated with the business type of the primary business from the categories identified in the category identification step; an output unit outputting a request message to the other business operators via a network, requesting the other business operators to provide values ​​of items to be input for each category; receiving the request message and deriving other indirect emissions for each of the categories based on values ​​received from the other business operators via a network; The derivation method comprises:

5. A program for causing a computer to function as a derivation device for deriving direct emissions, which indicate greenhouse gas emissions directly emitted by a business, and other indirect emissions, which indicate greenhouse gas emissions emitted as a result of the activities of a business that are not included in indirect emissions, which indicate greenhouse gas emissions indirectly emitted by a business through the purchase of energy by the business, an industry identification unit that identifies the industry of other businesses involved in the activities of the main business by referring to third association information that associates the main business with other businesses and the industries of the other businesses involved in the activities of the main business; a category identification unit that identifies a category related to the industry identified by the industry identification unit by referring to second association information that associates a category with an industry related to an item that should be input to derive other indirect emissions for the category; a selection unit that references first association information that associates the business type of the business with at least one category necessary for deriving other indirect emissions in the business type of the business, and selects a category associated with the business type of the main business from the categories identified by the category identification unit; an output unit that outputs a request message to the other business operators requesting them to provide values ​​for items to be input for each category; a derivation unit that receives the request message and derives other indirect emissions for each of the categories based on the values ​​received from the other businesses; A program for causing the computer to function as described above.

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