Expansion of Renewable Energy Sources and Introduction of Power Generation Technologies with Low Environmental Impact

For more than 100 years, Denka has been promoting the use of renewable energy. Specifically, we have engaged in technological pursuits on two fronts, namely (1) leveraging hydroelectric power generation and other technologies to create renewable energy while (2) fully taking advantage of this energy in chemical manufacturing and utilizing it as a valuable energy source. Toward the realization of a low-carbon society, we are increasing our focus on renewable energy-related initiatives, one of our areas of strength.

1. Denka Hydroelectric Power Plants

The Omi Plant is geographically situated amid a web of 17 hydroelectric power plants, including those under co-ownership. These power plants boast a combined maximum output of approximately 140,000 kW, making this one of the largest private-owned power generation network of its kind in Japan. All of these facilities employ a natural inflow type hydroelectric power generation system that ushers river water into the turbine runners and returns it to the river as soon it leaves the generator. Thanks to these features, this type of hydroelectric power plant places a relatively smaller burden on the natural environment.
Moreover, hydroelectric power plants generate virtually no greenhouse gases while serving as a renewable energy source with superior energy efficiency. Thus, these power plants are capable of harmoniously coexisting with the natural environment while generating electricity in a sustainable manner.

2. Initiatives Related to Solar Power Generation

3. Introduction of Power Generation Technologies with Low Environmental Impact

4. Breakdown of Energy Consumption by Source (non-consolidated)

5. Future Outlook for Our Renewable Energy Generation Capacity

We will contribute to the realization of a sustainable society through various initiatives, including the construction of new power plants and the renewal of existing power plants.

Response to Abnormal Weather

As the amount of electricity generated by our hydroelectric power generation facilities change from moment to moment depending on natural phenomena such as rainfall, it is necessary to achieve a good balance in in-house power generation, electricity purchased, and plant operations. Specifically, during abnormal weather—such as large typhoons and torrential rains—and droughts, the departments providing utilities and large plants collaborate to strive for appropriate operation management that does not waste water resources.

Hydroelectric power plants around Omi Plant and their maximum outputs

Total maximum output of Denka’s in-house power generation (as of August 2022)