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Environmental Data

Promotion of measures to cope with global warming

Item Unit FY2019 FY2020
CO2 emission intensity*1 Pre-adjustment kg-CO2/kWh 0.643 0.593
Adjusted 0.656 0.601
CO2 emissions*1 Pre-adjustment x106 t-CO2 14.6 14.0
Adjusted 14.9 14.2
Equipment utilization rate of the Tomari nuclear power station % 0 0
Power generation efficiency of thermal power stations % 39.7 41.6
Electric power transmission and distribution loss % 4.9 3.3
Purchase of electric power from renewable energy, etc. Biomass power generation, etc.*2 x106 kWh 206 236
Wind power generation x106 kWh 870 1,014
Solar power generation x106 kWh 1,698 2,220
CO2 emissions in our office buildings, etc. (HEPCO Group)*3 *4 x103 t-CO2 33 33
Electricity usage in our office buildings (HEPCO Group) x106 kWh 55.7 55.2
Electricity usage in our office buildings x106 kWh 40.8 40.3
Amount of fuel consumed by heaters, etc. (converted to crude oil) kl 1,263 466
Amount of fuel consumed by company vehicles kl 1,286 1,199
Fuel economy of company vehicles, etc. (excluding special vehicles) km/l 9.3 9.5
Rate of low-emission vehicles in company vehicles. % 83.0 83.7
SF6 gas recovery rate
(HEPCO Group)
(Calendar year value)
Upon inspection % 99 99
Upon removal % 99 99

"HEPCO Group" is written in items including group companies.

  1. *1Calculated based on the "GHG Emissions Accounting, Reporting, and Disclosure System" of the "Act on Promotion of Global Warming Countermeasures".
  2. *2Power generation from plastic waste is included.
  3. *3Excludes the electricity when supplying the electricity, such as distribution losses, etc.
  4. *4Obtained by converting electricity of the office, water, heating fuel, and vehicle fuel consumption to CO2 based on "GHG Emissions Accounting, Reporting, and Disclosure System" of the "Act on Promotion of Global Warming Countermeasures".

Promotion of regional environmental conservation

Item Unit FY2019 FY2020
SOX emission intensity (Average of all power sources, HEPCO Group) g/kWh 0.83 0.66
NOX emission intensity (Average of all power sources, HEPCO Group) g/kWh 0.61 0.52
SOX emission intensity (Average of thermal power source) g/kWh 0.92 0.60
NOX emission intensity (Average of thermal power source) g/kWh 0.70 0.55
The pillar transformers contaminated by trace amounts of PCB*5 Treatment weight t 1,102 988
Number of transformers number 7,560 7,486
Insulating oil contaminated by trace amounts of PCB*5 Treatment weight t 573 153
Number of drums number 2,856 1,000
Water usage in power stations*6 x103 m3 4,586 4,311
Amount of wastewater from power stations*7 x103 m3 3,168 2,886

"HEPCO Group" is written in items including group companies.

  1. *5The treatment of pillar transformers and insulating oil contaminated by trace amounts of PCB started from FY2012.
  2. *6Aggregates the amount of water usage in thermal power stations, etc. excluding condenser cooling water and drinking water.
  3. *7Aggregates the amount of water discharged from the wastewater treatment system in thermal power and nuclear power stations.

Promotion of a recycling-based society

Item Unit FY2019 FY2020
Recycling rate of industrial waste (HEPCO Group)*8 % 96.0 97.2
Industrial waste Emissions x103 t 1,103 868
Recycled x103 t 1,059 843
Recycling rate of industrial waste Coal ash % 96.5 97.6
Desulfurized gypsum % 100 100
Concrete pillars % 100 100
Scrap wire % 95.5 100
Plastics for electricity distribution % 100 100
Water usage in office buildings (HEPCO Group) x103 m3 218 218
Water usage in office buildings x103 m3 164 170
Green procurement rate (Office supplies, etc., HEPCO Group)*9 % 92.1 93.8
Copy paper purchased (HEPCO Group) x106 sheets 114 101

"HEPCO Group" is written in items including group companies.

  1. *8The coverage is industrial waste generated in the power supply business of Hepco and group companies.
  2. *9Shows the procurement rate of environment-friendly products such as copy paper, printed matter, OA equipment, and clothing.

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