(C-EU8.4a) Disclose the following information about your transmission and distribution business.
Question dependencies
This question only appears if you select “Yes” in response to C-EU8.4.
Change from last year
No change
Rationale
A set of quantitative disclosures is put forward that allows electric utility organizations with a transmission and distribution business(s) to characterize their grid operations. These companies often operate within strict regulatory and contractual clauses, and therefore are provided with the opportunity to provide a narrative description to explain such instances.
Response options
Please complete the following table. The table is displayed over several rows for readability. You are able to add rows by using the “Add Row” button at the bottom of the table.
| Country/region | Voltage level | Annual load (GWh) | Annual energy losses (% of annual load) | Scope where emissions from energy losses are accounted for |
|---|---|---|---|---|
|
Select from: Country/region drop-down list |
Select from:
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Numerical field [enter a number from 0 - 999,999 using a maximum of 2 decimal places] |
Numerical field [enter a number from 0 - 999,999 using a maximum of 2 decimal places] |
Select from:
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| Emissions from energy losses (metric tons CO2e) | Length of network (km) | Number of connections | Area covered (km2) | Comment |
|---|---|---|---|---|
|
Numerical field [enter a number from 0-100 using a maximum of 3 decimal places] |
Numerical field [enter a number from 0-99,999,999,999 using a maximum of 2 decimal places] |
Numerical field [enter a number from 0-99,999,999,999 using a maximum of 2 decimal places] |
Numerical field [enter a number from 0-99,999,999,999 using a maximum of 2 decimal places] |
Text field [maximum 2,400 characters] |
[Add Row]
Requested content
General
- Transmission (high voltage) relates to transmitting electric power from generation plants in high-voltage (e.g. 230 kilovolts [kV] up to 765 kV) to distribution substations. The transmission system is configured as a network, meaning that power has multiple paths to follow from the generator to the distribution substation.
- Distribution (low voltage) is the lower-voltage electrical distribution of power from distribution substations to final customer, usually below 35kV. In contrast to the transmission system, the distribution system usually is radial, meaning that there is only one path from the distribution substation to a given consumer.
- If applicable, you should disclose the transmission and/or distribution related information from both your subsidiaries who are solely transmission and/or distribution and subsidiaries who provide both generation and transmission and/or distribution.
Country/Region (column 1)
- Select from the drop-down list the countries/regions in which your organization has transmission and distribution (T&D) activities.
Voltage level (column 2)
- Select whether you are reporting for transmission (high voltage) or distribution (low voltage) activities.
Annual load (GWh) (column 3)
- Annual load, or system load, is the annual electricity delivered to the grid system by generating units expressed in GWh.
Annual energy losses (% of annual load) (column 4)
- Transmission or distribution losses, are the difference between system load and energy delivered to distribution grids/consumer, expressed as a percentage per energy delivered to the grid.
- This figure provides a measure of the power dissipated in the form of useless heat through the grid. They are also called “technical losses” and depend on the network characteristics and the mode of operation.
Scope where emissions from energy losses are accounted for (column 5)
- Indicate where emissions from T&D losses are accounted for in you inventory. In markets where the utility owns the generation assets and the T&D infrastructure, the utility would account for T&D losses in Scope 1. If the utility is a separate entity from power generating assets, the emissions from T&D losses would fall under Scope 2.
- If your T&D losses are accounted for in Scope 2, select an option – location-based or market-based – consistent with your method of Scope 2 accounting reported in C6.2. If market-based approach is not applicable to your company, you need to provide a location-based figure.
Emissions from energy losses (metric tons CO2e) (column 6)
- Negative numbers are not allowed as reporting needs to be gross, not net figures.
- Emission figures should be for the reporting year only.
- For more information about CDP’s current recommendations on what emission factor to use for electricity accounting, where you can find emission factors and the different types there are, please check the Technical Note “Accounting of Scope 2 emissions.” Please also note that electricity produced by either CH4 and N2O is to be included in the emission factor.
- For further information, please also see GHG Protocol Scope 2 Guidance.
- For more detailed information beyond what is provided in this guidance and technical annexes, consult your carbon advisor, or verifier/assurer.
Length of network (km) (column 7)
- Length of network (km) is the total length of the routes, not cables, between different points of the network in kilometers.
Number of connections (column 8)
- This is the number of connections in the network, either at supply side or delivery point and interconnections.
Area covered (km2) (column 9)
- This is the area serviced by the transmission or distribution network, expressed in kilometer squared.
