Method for calculating carbon footprint of production link of electrical equipment

Abstract

The application discloses an electric power equipment production link carbon footprint accounting method, and belongs to the technical field of electric power equipment carbon footprint accounting. The method aims to solve the problems of repeated measurement of carbon emission and insufficient accounting accuracy caused by not deducting the already verified green electricity when accounting for indirect power emission by using regional average power emission factor. The technical scheme points are: obtaining enterprise production energy consumption, green certificate and provincial power grid data; based on the power grid data and the non-fossil energy power locked by the green certificate, calculating the provincial power remaining emission factor; checking the uniqueness and timeliness of the green certificate and locking the passed green certificate as equivalent green electricity power; according to the production energy consumption, the locked green electricity power and the provincial remaining emission factor, accounting for the indirect carbon emission of the production link. The method realizes the dynamic linkage of green certificate rights and interests and provincial power grid emission factor, and improves the accuracy and comparability of the electric power equipment production link carbon footprint accounting.

Description

Technical Field

[0001] This invention belongs to the field of carbon footprint accounting technology for electrical equipment, and particularly relates to a method for carbon footprint accounting in the production process of electrical equipment. Background Technology

[0002] With the deepening implementation of dual-carbon targets in the industrial sector, the carbon footprint of electrical equipment, as a key foundational equipment in the energy system, has become a core indicator in policy mechanisms such as green manufacturing evaluation, low-carbon procurement, and carbon border adjustment. The production process is a significant source of carbon emissions from electrical equipment, involving multiple emission points including fuel combustion, electricity consumption, and heat consumption. The accuracy of calculating indirect emissions from electricity has a significant impact on the overall carbon footprint result; however, due to the complex ownership and allocation of zero-carbon electricity such as green electricity, nuclear power, and hydropower within the power grid, accurate calculation of these emissions remains a technical challenge.

[0003] In current practices of carbon footprint accounting for electrical equipment, the calculation of indirect electricity emissions during the production process is generally based on the regional average electricity emission factor. This factor is calculated based on the region's total power generation and emissions, without distinguishing between non-fossil energy electricity that has been certified through green electricity trading or green certificates and electricity that remains part of the public grid. This leads to a situation where, in the presence of substantial green electricity trading, the same non-fossil energy electricity is both used by the purchasing company for its own carbon reduction deductions and is subsequently included in the denominator of the regional grid emission factor, resulting in double counting of environmental attributes. In practical applications, as more and more companies in the electrical equipment industry obtain zero-carbon electricity through the purchase of green electricity or green certificates, the existing accounting methods fail to accurately reflect their low-carbon electricity consumption levels, still calculating based on the average grid factor without deducting green electricity, severely weakening the incentive effect of green electricity and green certificates in product carbon footprint calculations.

[0004] Furthermore, most existing technologies treat emission factors as external, fixed parameters, lacking an accounting framework that links green certificate usage status, changes in provincial power structure, and actual electricity consumption behavior of enterprises. This results in the absence of a closed-loop methodology covering data collection, power ownership separation, residual emission factor calculation, and production-level accounting. Therefore, existing technologies struggle to meet the demands for accurate carbon footprint accounting in the electrical equipment manufacturing sector under multi-energy, multi-node conditions. The fundamental reason lies in the failure to couple green certificate rights consumption with dynamic calculation of grid emission factors. A key challenge in addressing this issue was the need to construct a factor calculation method that accurately separates already-confirmed zero-carbon electricity while reflecting the real-time carbon intensity of residual electricity in the provincial power grid, and ensures seamless integration with enterprise-level accounting data. This is precisely the technological bottleneck that urgently needs to be overcome in this field. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a carbon footprint accounting method for the production of electrical equipment, thereby resolving the issues present in the existing technologies.

[0006] Firstly, to achieve the above objectives, this invention provides a method for calculating the carbon footprint of electrical equipment manufacturing, comprising the following steps: Obtain production energy consumption data, green certificate holding data, and power grid energy data of electrical equipment manufacturers and their respective provincial regions; Based on the aforementioned power grid energy data and the amount of non-fossil energy electricity locked by green certificates, the residual power emission factor of the provincial region to which the enterprise belongs is calculated. The green certificate holding data is verified for the uniqueness of rights and the validity of timeliness, and the green certificates that pass the verification are converted into equivalent green electricity and locked. Based on the production energy consumption data, the locked equivalent green electricity volume, and the remaining electricity emission factor, the indirect carbon emissions from electricity in the enterprise's production process are calculated.

[0007] Optionally, the process of verifying the uniqueness and timeliness of green certificate holding data includes: The current usage status of green certificates is queried in the green certificate rights status database, and only green certificates with an unused status are allowed to enter the accounting process; By comparing the official issuance date and validity period of the green certificate with the current accounting cycle time, only green certificates that are still valid are allowed to enter the accounting process.

[0008] Optionally, the process of converting verified green certificates into equivalent green electricity and locking them includes: According to the preset conversion relationship between green certificates and electricity, the green certificate data is converted into equivalent renewable energy electricity. The equivalent renewable energy electricity is marked as having been used in this carbon footprint calculation, and an equity lock-in record is generated.

[0009] Optionally, the process of calculating the residual emission factor of electricity based on grid energy data and non-fossil energy electricity locked by green certificates includes: From provincial power grid energy data, obtain the province's total carbon emissions from power generation, the province's total power generation, net electricity exchange with international / regional / provincial entities, the corresponding trading entity's carbon emission factor, the total net green certificates traded with that entity, and the electricity from other non-fossil energy sources such as nuclear power purchased from outside; From the province's total power generation, after deducting the total net green certificates traded with this entity and the electricity generated from purchased nuclear power and other non-fossil energy sources, the remaining distributable electricity for the region is obtained. The remaining emission factor of electricity is obtained by summing the total carbon emissions from power generation in the province with the calculated result of (net electricity exchange volume - total net green certificates) × the corresponding trading entity's electricity carbon emission factor, and dividing by the remaining distributable electricity volume in the region.

[0010] Optionally, the net carbon emissions from cross-entity electricity exchanges are determined by multiplying (net electricity exchange volume - total net green certificates) by the corresponding trading entity's electricity carbon emission factor.

[0011] Optionally, the process for calculating the indirect carbon emissions from electricity generated during a company's production process includes: Subtract the locked equivalent green electricity from the enterprise's total electricity consumption to obtain the remaining electricity for which carbon emissions need to be allocated; Multiplying the remaining electricity by the remaining electricity emission factor yields the indirect carbon emissions from electricity.

[0012] Optionally, the method is executed through a linked system architecture, the architecture comprising: A data acquisition unit is used to acquire the production energy consumption data, green certificate holding data, and power grid energy data; a provincial factor calculation unit is connected to the data acquisition unit and is used to calculate and update the residual power emission factor. The production process accounting unit is connected to the data acquisition unit and the provincial factor calculation unit, and is used to perform green certificate verification, electricity locking and carbon emission accounting.

[0013] Optionally, when the provincial factor calculation unit receives new green certificate locked electricity information, it triggers a synchronous update calculation of the remaining electricity emission factor.

[0014] Secondly, the present invention also provides a computer terminal device, comprising: One or more processors; A memory, coupled to the processor, for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the steps of the carbon footprint accounting method for the electrical equipment production process in the first aspect described above.

[0015] Thirdly, the present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the steps of the carbon footprint accounting method for the electrical equipment production process in the first aspect described above.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects: This invention provides a carbon footprint accounting method for the production of electrical equipment. By introducing a provincial-level residual emission factor for electricity and combining it with a green certificate ownership verification and locking mechanism, the accuracy and reliability of carbon footprint accounting for the production of electrical equipment are effectively improved. Its beneficial effects are specifically manifested in the following ways: First, this method significantly improves the technical accuracy of indirect electricity emission accounting. By deducting the confirmed non-fossil energy electricity from the provincial power grid allocation system, the residual emission factor truly reflects the carbon emission intensity of electricity not covered by green certificates, avoiding systematic bias caused by the use of regional average factors. Second, this method ensures the consistency between green electricity emission reduction rights and electricity emission accounting results. Through the verification of the uniqueness and timeliness of green certificates and their electricity locking mechanism, it prevents the same non-fossil energy electricity from being repeatedly included in different accounting scenarios, ensuring the uniqueness of environmental rights and achieving the conservation of carbon emission allocation at the regional scale. Finally, this invention demonstrates good engineering applicability and feasibility. Its core innovation focuses on the calibration of electricity emissions in the production process. It does not require the reconstruction of the entire life cycle accounting framework, is easy to embed into existing processes, and provides a traceable and reusable accurate accounting solution for the production of electrical equipment in different provinces and of different types through a system architecture that links data collection, factor calculation and production accounting. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a flowchart illustrating a method for calculating the carbon footprint of electrical equipment manufacturing, according to an embodiment of the present invention. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0020] Example 1 like Figure 1 As shown, this embodiment provides a method for calculating the carbon footprint of electrical equipment manufacturing, including: Obtain production energy consumption data, green certificate holding data, and power grid energy data of electrical equipment manufacturers and their respective provincial regions; Based on the aforementioned power grid energy data and the amount of non-fossil energy electricity locked by green certificates, the residual power emission factor of the provincial region to which the enterprise belongs is calculated. The green certificate holding data is verified for the uniqueness of rights and the validity of timeliness, and the green certificates that pass the verification are converted into equivalent green electricity and locked. Based on the production energy consumption data, the locked equivalent green electricity volume, and the remaining electricity emission factor, the indirect carbon emissions from electricity in the enterprise's production process are calculated.

[0021] Furthermore, the process of verifying the uniqueness and timeliness of green certificate holding data includes: The current usage status of green certificates is queried in the green certificate rights status database, and only green certificates with an unused status are allowed to enter the accounting process; By comparing the official issuance date and validity period of the green certificate with the current accounting cycle time, only green certificates that are still valid are allowed to enter the accounting process.

[0022] Specifically, the implementation process of this embodiment includes: Green certificate rights uniqueness verification mechanism: The system establishes a unique electronic identifier for each green certificate, including the green certificate number, the corresponding power generation unit identifier, and the issuance timestamp, and maintains its access status in the green certificate rights status database.

[0023] Before green certificates are used in the carbon footprint deduction calculation of this invention, the system automatically performs the following verification steps: The unique identifier of the green certificate is compared with the green certificate rights status database. If the status of the green certificate is marked as "already used for carbon footprint deduction" or "already used for CCER emission reduction generation", it is prohibited from participating in this calculation. Only when the status of the green certificate is "unused" is the corresponding green electricity allowed to be included in this carbon footprint calculation.

[0024] Once a green certificate is successfully used for carbon footprint accounting in this embodiment, the system updates its status to "used for carbon footprint deduction" and writes an irreversible rights call record, thereby achieving exclusive use between green certificates and CCER emission reductions at the technical level.

[0025] Green certificate validity verification mechanism: Before accessing a green certificate, the system automatically reads the official issuance date and validity period of the green certificate and compares the current accounting cycle with the validity period of the green certificate.

[0026] When a green certificate expires, the system automatically determines that the green certificate is "invalid" and prohibits it from entering the carbon footprint deduction calculation process; only when the green certificate is within its validity period can the corresponding green electricity be used for electricity carbon emission deduction.

[0027] Furthermore, the process of converting verified green certificates into equivalent green electricity and locking them in includes: According to the preset conversion relationship between green certificates and electricity, the green certificate data is converted into equivalent renewable energy electricity. The equivalent renewable energy electricity is marked as having been used in this carbon footprint calculation, and an equity lock-in record is generated.

[0028] Specifically, the implementation process of this embodiment includes: Green Certificate Power Matching and Locking Mechanism: The system converts green certificates that pass uniqueness and validity checks into equivalent renewable energy electricity, according to the conversion rule of "1 green certificate corresponds to 1 MWh of green electricity". This electricity volume will be locked specifically for this carbon footprint accounting. This equivalent electricity volume is compared with the company's total purchased electricity. The system is matched to form a "deductible electricity pool" for electricity carbon emission accounting, and at the same time, corresponding green certificate trading vouchers and rights lock records are generated to ensure that the green certificates used cannot be called up again in other accounting scenarios.

[0029] Furthermore, the process of calculating the residual emission factor of electricity based on grid energy data and the amount of non-fossil energy locked by green certificates includes: From provincial power grid energy data, obtain the province's total carbon emissions from power generation, the province's total power generation, net electricity exchange with international / regional / provincial entities, the corresponding trading entity's carbon emission factor, the total net green certificates traded with that entity, and the electricity from other non-fossil energy sources such as nuclear power purchased from outside; From the province's total power generation, after deducting the total net green certificates traded with this entity and the electricity generated from purchased nuclear power and other non-fossil energy sources, the remaining distributable electricity for the region is obtained. The remaining emission factor of electricity is obtained by summing the total carbon emissions from power generation in the province with the calculated result of (net electricity exchange volume - total net green certificates) × the corresponding trading entity's electricity carbon emission factor, and dividing by the remaining distributable electricity volume in the region.

[0030] Furthermore, the net carbon emissions from cross-entity electricity exchanges are determined by multiplying (net electricity exchange volume - total net green certificates) by the corresponding trading entity's electricity carbon emission factor.

[0031] Specifically, the implementation process of this embodiment includes: Refined calculation methods: Calculation logic: The calculation of the provincial-level residual emission factor follows the principle of "residual electricity allocation," which means that, in the total power supply of the provincial power grid, the amount of non-fossil energy electricity locked through market-based green electricity trading or green certificates is first deducted, and then the emissions from fossil energy power generation corresponding to power flows within the province and across provinces are allocated to the remaining allocable electricity, thus obtaining the carbon emission intensity per unit of residual electricity. This logic introduces the dimensions of provincial power grids and inter-provincial power exchange on top of the national average electricity emission factor (excluding market-traded non-fossil energy electricity), enabling the emission factor to reflect the true carbon ownership structure of electricity among different provinces.

[0032] Calculation formula: The refined calculation formula for the provincial-level residual emission factor of electricity is revised as follows: ; The parameters in the formula are defined as follows: : Residual carbon dioxide emission factor of electricity generation in a certain province (kgCO2 / kWh); The direct carbon dioxide emissions (kgCO2) generated by power generation within the province's administrative region are only counted as emissions from fossil fuel power generation; emissions from non-fossil fuel power generation are calculated as "0". Net electricity exchanged with international / regional / provincial entities (kWh); The total net amount of green certificates traded with this entity (kWh), with 1 green certificate corresponding to 1 MWh of clean electricity; The main body's carbon emission factor for electricity (kgCO2 / kWh); The total annual power generation (kWh) within the province's administrative region, including thermal power, hydropower, wind power, nuclear power, and solar power; Detailed calculation rules for core parameters of purchased nuclear power and other non-fossil energy power (kWh): Direct carbon emissions from power generation in this province ( Based on fossil fuel consumption accounting, the sectoral approach recommended by the IPCC is adopted, and the formula is as follows: ; In the formula: The province's consumption of the mth type of fossil fuel used for thermal power generation (t or This includes coal and natural gas, but excludes biomass fuels; The average lower heating value (GJ / t) of the m-th fossil fuel (This refers to the annual statistical data published by the National Bureau of Statistics.) : Carbon content per unit calorific value of the m-th fossil fuel (tC / GJ). When no measured data is available, refer to the recommended value in the "Guidelines for the Compilation of Provincial Greenhouse Gas Inventories". The default value for raw coal is approximately 26.37 tC / GJ. : Carbon oxidation rate (%) of the m-th fossil fuel. Local measured data should be used first. If no measured data is available, refer to the default value in the IPCC National Greenhouse Gas Inventory Guidelines. The default value for coal can be 98%, and the default value for natural gas is 99%; 44 / 12: Molar mass conversion factor for carbon to carbon dioxide.

[0033] Data source and accuracy control: Basic energy data, such as electricity generation and fossil fuel consumption, are sourced from annual statistical bulletins of provincial statistical bureaus and energy bureaus, as well as annual statistical reports of the power industry. Emission factor parameters: Core parameters such as lower heating value of fuel, carbon content per unit heating value, and carbon oxidation rate should be used first, with priority given to local measured data. When no measured data is available, the recommended values ​​in the "Guidelines for the Compilation of Provincial Greenhouse Gas Inventories" and the IPCC "Guidelines for National Greenhouse Gas Inventories" should be used. Electricity trading data: Inter-provincial electricity transfers in and out are derived from the annual settlement reports of provincial electricity trading centers and cross-regional electricity trading supervision data; Precision control: When the proportion of inter-provincial power transactions is less than 1%, the accounting can be simplified and the calculation can be done directly using data from within the province; for provinces where the proportion of non-fossil energy power generation exceeds 80%, the fossil fuel emission accounting process can be appropriately simplified to improve accounting efficiency.

[0034] Furthermore, the process of calculating the indirect carbon emissions from electricity generated during a company's production process includes: Subtract the locked equivalent green electricity from the enterprise's total electricity consumption to obtain the remaining electricity for which carbon emissions need to be allocated; Multiplying the remaining electricity by the remaining electricity emission factor yields the indirect carbon emissions from electricity.

[0035] Specifically, the implementation process of this embodiment includes: Electricity emission accounting method based on green certificate locking: After completing the verification of green certificate rights and the locking of electricity consumption, the system calculates the carbon emissions corresponding to the electricity generated during the production process using the following formula: ; In the formula: Carbon emissions associated with electricity; Total amount of electricity purchased by enterprises; The equivalent amount of renewable energy electricity verified and locked through green certificates; Provincial-level residual carbon emission factor in electricity. The corresponding non-fossil energy electricity will be synchronously fed back to the provincial electricity surplus emission factor calculation unit for dynamic correction of regional distributable electricity, thereby achieving consistency between green certificate deduction and provincial emission factor.

[0036] Furthermore, the method is executed through a linked system architecture, which includes: A data acquisition unit is used to acquire the production energy consumption data, green certificate holding data, and power grid energy data; a provincial factor calculation unit is connected to the data acquisition unit and is used to calculate and update the residual power emission factor. The production process accounting unit is connected to the data acquisition unit and the provincial factor calculation unit, and is used to perform green certificate verification, electricity locking and carbon emission accounting.

[0037] Specifically, the implementation process of this embodiment includes: This embodiment constructs a linked system architecture consisting of a data acquisition unit, a provincial factor calculation unit, and a production process accounting unit. Each of the above units is a functional logic unit, which can be implemented through a table model, an offline calculation program, or an information system, without being limited to a specific software or hardware form.

[0038] Data acquisition unit (functional module): used to acquire raw data related to carbon footprint accounting from enterprise production systems, energy metering systems, green certificate trading platforms and provincial power grid statistical systems, including: production fuel consumption, electricity and heat consumption, green electricity and green certificate information, as well as the power generation, fossil energy consumption, non-fossil energy power generation and inter-provincial power trading volume of the provincial power grid.

[0039] The data acquisition unit performs outlier identification, missing value completion, and unit standardization on the acquired data, and sends the cleaned data to the provincial factor calculation unit and the production process accounting unit as basic inputs.

[0040] Furthermore, when the provincial factor calculation unit receives new green certificate locked electricity information, it triggers a synchronous update calculation of the remaining electricity emission factor.

[0041] Specifically, the implementation process of this embodiment includes: The provincial factor calculation unit receives provincial power grid generation structure data, inter-provincial power transaction data, and locked non-fossil energy power data from the data acquisition unit, and generates the power residual emission factor for the corresponding accounting period according to the provincial power residual emission factor calculation formula defined in this invention.

[0042] When a new green certificate is used for carbon footprint offsetting and its corresponding electricity is locked, the electricity will be deducted from the provincial allocated non-fossil energy electricity, triggering the provincial factor calculation unit to synchronously update the remaining emission factors, thereby ensuring that the emission factors are consistent with the green certificate usage status.

[0043] The production process accounting unit receives enterprise production and energy consumption data provided by the data acquisition unit, and calls the real-time residual emission factor output by the provincial factor calculation unit to comprehensively calculate the enterprise's fuel emissions, indirect electricity emissions, and thermal emissions in the production process.

[0044] The production process accounting unit deducts the renewable energy electricity, after it has been verified and locked by green certificates, from the total amount of purchased electricity, and calculates the corresponding carbon emissions based on the updated residual emission factor, ultimately generating the carbon footprint results of the production process and a traceable accounting report.

[0045] Example 2 In this embodiment, a computer terminal device is provided, including: One or more processors; A memory, coupled to the processor, for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the steps of the carbon footprint accounting method for the production process of electrical equipment described above.

[0046] In this embodiment, a computer-readable storage medium is also provided, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of the above-described method for calculating the carbon footprint of electrical equipment production.

[0047] This invention provides a carbon footprint accounting method for the production of electrical equipment. By introducing a provincial-level residual emission factor for electricity and combining it with a green certificate ownership verification and locking mechanism, the accuracy and reliability of carbon footprint accounting for the production of electrical equipment are effectively improved. Its beneficial effects are specifically manifested in the following ways: First, this method significantly improves the technical accuracy of indirect electricity emission accounting. By deducting the confirmed non-fossil energy electricity from the provincial power grid allocation system, the residual emission factor truly reflects the carbon emission intensity of electricity not covered by green certificates, avoiding systematic bias caused by the use of regional average factors. Second, this method ensures the consistency between green electricity emission reduction rights and electricity emission accounting results. Through the verification of the uniqueness and timeliness of green certificates and their electricity locking mechanism, it prevents the same non-fossil energy electricity from being repeatedly included in different accounting scenarios, ensuring the uniqueness of environmental rights and achieving the conservation of carbon emission allocation at the regional scale. Finally, this invention demonstrates good engineering applicability and feasibility. Its core innovation focuses on the calibration of electricity emissions in the production process. It does not require the reconstruction of the entire life cycle accounting framework, is easy to embed into existing processes, and provides a traceable and reusable accurate accounting solution for the production of electrical equipment in different provinces and of different types through a system architecture that links data collection, factor calculation and production accounting.

[0048] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for calculating the carbon footprint of electrical equipment manufacturing, characterized in that, Includes the following steps: Obtain production energy consumption data, green certificate holding data, and power grid energy data of electrical equipment manufacturers and their respective provincial regions; Based on the aforementioned power grid energy data and the amount of non-fossil energy electricity locked by green certificates, the residual power emission factor of the provincial region to which the enterprise belongs is calculated. The green certificate holding data is verified for the uniqueness of rights and the validity of timeliness, and the green certificates that pass the verification are converted into equivalent green electricity and locked. Based on the production energy consumption data, the locked equivalent green electricity volume, and the remaining electricity emission factor, the indirect carbon emissions from electricity in the enterprise's production process are calculated.

2. The method according to claim 1, characterized in that, The process of verifying the uniqueness and timeliness of green certificate holding data includes: The current usage status of green certificates is queried in the green certificate rights status database, and only green certificates with an unused status are allowed to enter the accounting process; By comparing the official issuance date and validity period of the green certificate with the current accounting cycle time, only green certificates that are still valid are allowed to enter the accounting process.

3. The method according to claim 2, characterized in that, The process of converting verified green certificates into equivalent green electricity and locking them includes: According to the preset conversion relationship between green certificates and electricity, the green certificate data is converted into equivalent renewable energy electricity. The equivalent renewable energy electricity is marked as having been used in this carbon footprint calculation, and an equity lock-in record is generated.

4. The method according to claim 1, characterized in that, The process of calculating the residual emission factor of electricity based on grid energy data and non-fossil energy electricity locked by green certificates includes: From provincial power grid energy data, obtain the total regional power generation, carbon emissions from fossil fuel power generation, and carbon emissions corresponding to inter-provincial power exchange; The remaining distributable electricity in the region is obtained by subtracting the non-fossil energy electricity locked by the green certificate from the total regional electricity generation. The residual emission factor is obtained by dividing the sum of regional fossil fuel power generation carbon emissions and inter-provincial power exchange net carbon emissions by the remaining distributable electricity in the region.

5. The method according to claim 4, characterized in that, The carbon emissions corresponding to inter-provincial power exchanges are determined by multiplying the amount of electricity transferred in or out by the average emission factor on the power production side of the corresponding province.

6. The method according to claim 1, characterized in that, The process of calculating the indirect carbon emissions from electricity generated during a company's production process includes: Subtract the locked equivalent green electricity from the enterprise's total electricity consumption to obtain the remaining electricity for which carbon emissions need to be allocated; Multiplying the remaining electricity by the remaining electricity emission factor yields the indirect carbon emissions from electricity.

7. The method according to claim 1, characterized in that, The method is executed through a linkage system architecture, which includes: A data acquisition unit is used to acquire the production energy consumption data, green certificate holding data, and power grid energy data; a provincial factor calculation unit is connected to the data acquisition unit and is used to calculate and update the residual power emission factor. The production process accounting unit is connected to the data acquisition unit and the provincial factor calculation unit, and is used to perform green certificate verification, electricity locking and carbon emission accounting.

8. The method according to claim 7, characterized in that, When the provincial factor calculation unit receives new green certificate locked electricity information, it triggers the synchronous update calculation of the remaining electricity emission factor.

9. A computer terminal device, characterized in that, include: One or more processors; A memory, coupled to the processor, for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors perform the steps of the method as described in any one of claims 1-8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1-8.

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