Top of page
Page content starts here

Environmental Indices (performance & targets)

In the aim of realizing the HEPCO Group Environmental Policy, we have set environmental management indices reflecting important environmental aspects that we give particular priority, and configured quantitative targets to the extent possible. We also regularly check the extent to which we are achieving these goals.

Promotion of Global Warming Countermeasures

  • CO2 Emission Reductions <HEPCO only>

With the long-term shutdown of Tomari Nuclear Power Station, thermal power stations have been operating at high levels, which has also kept CO2 emissions at high levels.
Although CO2 emissions had fallen to levels below the previous year's due to a decrease in the amount of electricity sold, a decline in the water flow rate reduced the amount of hydroelectric power generated and led to an increase in the ratio of thermal power generated, which has resulted in a higher emissions intensity.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
CO2 emission intensity *1
[kg-CO2/kWh]
Adjusted *2 0.640 0.678 Reduce as much as possible A little more effort required Reduce as much as possible
Unadjusted 0.632 0.666

<FY2019 Target>

To achieve our FY2031 goal for the entire electricity business (CO2 emissions factor of 0.37 kg-CO2/kWh (end user)), we will make every effort to reduce the CO2 emissions intensity as much as possible through the utilization of electricity generated by nuclear power on the condition that safety is assured, utilization of renewable energies, as well as provision of highly efficient thermal power, appropriate maintenance and management of thermal efficiency, and energy-saving and CO2 reducing services.

  • Curbing Emissions of Non-CO2 Greenhouse Gases

We have achieved targets by appropriately capturing greenhouse gases when inspecting or removing gas circuit breakers and other equipment.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
SF6 capture rate [%]
[Calendar year]
During equipment inspection 99 99 Raise to 97 or even higher Sufficiently achieved Raise to 97 or even higher
During equipment removal 99 99 99 or higher Achived 99 or higher
  • Promoting Office Energy Savings

We have achieved targets by lowering the amount of electricity used with a variety of measures including reducing power consumption through the Eco-Work Campaign, and an in-house movement that promotes energy savings and other such thrifty activities.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
Electricity used in offices [1 million kWh units]*3 60.2 59.8 Reduce as much as possible (below previous year's level) Achived Reduce as much as possible (below previous year's level)
  • Promoting Office Energy Savings <HEPCO only>

The number of low emission vehicles deregistered and the number of new vehicles registered was the same, so the overall introduction rate was the same as the previous year.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
Rate of introduction of low-emission vehicles [%] 81.7 81.7 Raise as high as possible (over previous year's level) Achived Raise as high as possible

Promoting Global Environmental Conservation

  • Preventing Air Pollution

The long-term shutdown of Tomari Nuclear Power Station has prolonged a situation where we have no choice but to rely upon thermal power generation alternatives, so the emissions intensity was at the same as the previous year's level.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
SOX emission intensity (avg. for all power sources) [g/kWh] 0.97 0.89 Reduce as much as possible Sufficiently achieved Reduce as much as possible
NOX emission intensity (avg. for all power sources) [g/kWh] 0.60 0.65 Reduce as much as possible A little more effort required Reduce as much as possible

<FY2019 Target>

We endeavor to reduce SOX and NOX emissions (emission intensities) through the proper operation of flue-gas desulfurization and denitrification systems as well as other emission-reduction technologies.

  • Promoting Proper PCB Treatment <HEPCO only>

Satisfactory progress has been made in treating low-concentration PCB-contaminated materials.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
Weight of pole transformers processed for low-concentration PCB contamination [t]
(No. of transformers) [units]
603.0
(4,800)
609.1
(4,800)
Proceed with processing systematically Sufficiently achieved Proceed with processing systematically
Weight of insulating oil processed for low-concentration PCB contamination [t]
(No. of drum cans) [quantity]
460.4
(2,800)
447.8
(2,800)
Proceed with processing systematically Sufficiently achieved Proceed with processing systematically

Promoting Formation of a Recycling-Oriented Society

  • Raising the Rate of Recycled Industrial Waste

Although the amount of coal ash produced in thermal power stations has increased, we have strived to expand uses for recycled materials. Combined with other efforts, these activities have enabled us to achieve our targets.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
Recycling rate *4 [%] 97.7 96.8 95 level Sufficiently achieved 95 level
Coal ash recycling rate *4 [%] 98.3 97.1 95 level Sufficiently achieved 95 level
  • Promoting Office Activities for Conserving Resources

Despite water leaks at some offices due to aging facilities, the Eco-Work Campaign and other measures have sustained our efforts, allowing us to achieve our targets.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
Amount of water used at offices [10,000 m3] 24.1 23.7 24.0 Sufficiently achieved Reduce as much as possible (below previous year's level)

The progress made in our green procurement activities at HEPCO Group companies and other such efforts has made it possible for us to achieve our targets.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
Rate of green procurement (office supplies, etc.) *5 [%] 86.7 96.8 93*6 Sufficiently achieved 93*6

We achieved our set target through a combination of efforts that included using the other side of misprint paper, printing on both sides, and reducing printing size. In addition, we also benefited from a reactionary decline in the amount of purchased due to an increase in the preceding year.

  Actual FY2018
target
Score FY2019
target
FY2017 FY2018
Amount of copy paper purchased
[1,000,000-sheet units]
(A4-size conversion)
116 115 Reduce as much as possible (below previous year's level) Achived Reduce as much as possible (below previous year's level)

[Scoring Index]

Scoring Index

  1. *1: Calculated based upon the "Calculation, Reporting and Publication System for Greenhouse Gas Emissions" pursuant to the Act on Promotion of Global Warming Countermeasures.
  2. *2: Values reflect adjustments and other modifications made in conjunction with CO2 emission credits, purchases of non-fossil fuel value certificates, and the Feed-In Tariff (FIT) scheme for renewable energy sources.
  3. *3: This does not include the amount of electricity used in supplying electric power, such as electricity used internally at power stations and substations and power lost along transmission and distribution lines.
  4. *4: This refers to industrial waste produced by HEPCO Group companies in businesses relating to supplying electricity as well as the HEPCO Group Head Office.
  5. *5: Of the target items (copy paper, printed materials, office automation equipment, and clothing), the rate indicates the percentage of environmentally-friendly products purchased, which sales companies have announced in catalogs or other merchandise publications. For HEPCO Group companies, only copy paper is counted.
  6. *6: The calculation excludes printed items that are flyers, posters or pamphlets.

Return to top of page