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Environmental Preservation

Promoting the Use of Clean Energy

Promoting the Use of Clean Energy

  • A stable power supply and efficient energy usage are essential to the manufacture of industrial chemical products. Since its founding, Denka has proactively developed a network of hydroelectric power plants. Today, this network consists of 15 power plants, including those owned by Kurobegawa Electric Power Company, a joint venture established by Denka and a local power company, and is supplying energy equivalent to approximately 30% of Denka’s overall energy consumption. Meanwhile, at our thermal power plants, which are being converted to run on natural gas instead of heavy oil, we are working to introduce high-efficiency gas turbine generators. We also utilize heat from cement production for power generation while employing biomass boilers for the same purpose with the aim of reducing CO2 emissions attributable to energy use. Going forward, we will engage in corporate activities that give due consideration to environmental concerns, thereby contributing to the creation of a low-carbon society.

A Hydroelectric Power Plant under Construction, Aiming to Reduce CO2 Emissions even Further

The New Omigawa Power Plant (maximum output: approximately 8,100 kW; planned operational kickoff: December 2020) is under construction upstream of the Omigawa Power Plant. Thus far, the groundwork for the plant building is under way along with the development of sites around the facility premises. Moreover, Kurobegawa Electric Power Company is currently constructing the New Himekawa Power Plant No. 6 (maximum output: approximately 28,000kW; planned operational kickoff: April 2022). These facilities are expected to contribute to a total reduction in CO2 emissions of approximately 35,000 tons per year once operations are under way.

Long-Term Outlook for Denka’s Renewable Energy (Power Generation Capacity)

Long-Term Outlook for Denka’s Renewable Energy (Power Generation Capacity)

  • Note: The calculation of the figures presented above incorporated 50% of annual output from power plants run by Kurobegawa Electric Power Company (jointly owned with Hokuriku Electric Power Company).
デンカ株式会社, デンカ株式会社 IR室

Initiatives in Electric Power Generation

Power Sources in Fiscal 2018

Power Sources in Fiscal 2018

  • Scope of reporting:Six domestic plants directly managed by Denka, the Innovation Center and other operational sectors (Head Office, branches, etc.)
Total maximum output of Denka’s in-house power generation (as of June 2019)/h5>
Facility Map   Maximum output (kW) The amount Denka is
entitled to (kW)
Hydroelectric 1 Omigawa 3,300   3,300  
  2 Kotakigawa 5,200   5,200  
  3 Oami 28,400   28,400  
  4 Otokorogawa 9,800   9,800  
  5 Yokokawa No. 1 10,000   10,000  
  6 Yokokawa No. 2 16,000   16,000  
  7 Umikawa No. 1 3,800   3,800  
  8 Umikawa No. 2 4,700   4,700  
  9 Umikawa No. 3 2,600   2,600  
  10 Umikawa No. 4 990   990 (FIT)
  11 Himekawa No. 6 26,000 Kurobegawa Electric Power Co. 13,000  
  12 Takigami 15,000 Kurobegawa Electric Power Co. 7,500  
  13 Nagatoga 5,000 Kurobegawa Electric Power Co. 2,500  
  14 Sasakura No. 2 10,200 Kurobegawa Electric Power Co. 5,100  
  15 Kita-otari 10,700 Kurobegawa Electric Power Co. 5,350  
    Total maximum output 151,690   118,240  
    Total in-house consumption -   117,250  
Under construction (completion scheduled for 2020) 16 New Omigawa 8,100   8,100 (FIT)
Under construction (completion scheduled for 2022) 17 New Himekawa No. 6 28,000 Kurobegawa Electric Power Co. 14,000 (FIT)
    (Planned total maximum output for 2022) 187,790   140,340  
Solar   Shibukawa 2,200   2,200 (FIT)
    Isesaki 1,200   1,200 (FIT)
Total maximum output   Total maximum output 3,400   3,400  
Thermal (LNG)   Omi 14,000   14,000  
    Omi (Tomi) 25,000   25,000  
Thermal (waste heat and biomass boiler)   Omi cement 11,100   11,100  
Thermal (Gas turbines and cogeneration)   Omi (Tomi) 17,760   17,760  
    Chiba 12,720   12,720  
Thermal (diesel)   Shibukawa 1,000   1,000  
Total maximum output   Total maximum output 81,580   81,580  
Total maximum output (including output for FIT)         203,220  
Total maximum output for in-house consumption     236,670   198,830  
デンカ株式会社, デンカ株式会社 IR室
Environmental Preservation
Management
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Environmental Policies

Caring for the Global Environment Focusing on Responsible Care Activit...

Environmental Preservation
A Message from the Officer in Charge of Environmental Measures
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A Message from the Officer in Charge of Environmental Measures

Doing Our Best as a Chemical Product Manufacturer to Live up to Society’s...

Environmental Preservation
Medium-Term Environmental Plan
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Medium-Term Environmental Plan

In fiscal 2018, which was the last year of the Sixth Medium-Term Environm...

Environmental Preservation
Initiatives Aimed at Curbing GHG Emissions and Reduction Targets for GHG Emissions
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Initiatives Aimed at Curbing GHG Emissions and Reduction Targets for GHG Emissions

Denka’s Reduction Targets for GHG Emissions *Net GHG emissions:...

Environmental Preservation
Climate Change: Risks and Opportunities
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Climate Change: Risks and Opportunities

  Risks Opportunities ...

Environmental Preservation
Promoting the Use of Clean Energy
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Promoting the Use of Clean Energy

A stable power supply and efficient energy usage are essential to...

Environmental Preservation
Promoting the Use of Clean Energy
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Initiatives in Electric Power Generation

Power Sources in Fiscal 2018 Scope of reporting:Six dom...

Environmental Preservation
Government Subsidies Related to the Environment and Energy
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Government Subsidies Related to the Environment and Energy

Utilization of Government Subsidies Related to the Environment and Energy...

Environmental Preservation
The Denka Group’s Policies on the Prevention of Environmental Pollution
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The Denka Group’s Policies on the Prevention of Environmental Pollution

Denka is properly managing the volume of environmental load substances em...

Environmental Preservation
The Denka Group’s Policies regarding and Accomplishments in Biodiversity Protection
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The Denka Group’s Policies regarding and Accomplishments in Biodiversity Protection

In recent years, the general public has voiced growing concerns with rega...

Environmental Preservation
Preservation of Water Resources
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Preservation of Water Resources

(1) Background The issue of limited water resources is recognized ...

Environmental Preservation
Contribution to the Development of a Recycling-Oriented Society
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Contribution to the Development of a Recycling-Oriented Society

We are promoting a switchover of raw materials and fuels used by cement p...

Environmental Preservation
Initiatives to Reduce Marine Plastics
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Initiatives to Reduce Marine Plastics

In September 2018, Denka co-founded the Japan Initiative for Mari...

Environmental Preservation
Environmental Accounting
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Environmental Accounting

Conservation Costs The main items of environmental investment in fisca...

Environmental Preservation
Overview of Environmental Impacts
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Overview of Environmental Impacts

(totals for all production sites in fiscal 2018; fiscal 2017 figures ...

Environmental Preservation
Fiscal 2018 Environmental Performance Data
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Fiscal 2018 Environmental Performance Data

Production Volume and Energy Consumption Intensity The ene...

Environmental Preservation
Performance data of each site
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Performance data of each site

Environmental performance data (fiscal 2018): major kinds of emissions an...