Dominion Energy, Inc.

Dominion Energy, Inc. is an energy company based in the United States (Baa2 stable). The company operates electric and natural gas infrastructure focused on the eastern United States. Its generation mix is composed of nuclear, hydroelectric, natural gas, and renewables. Water issues are very significant for generation and hydroelectric plant operations, coal-ash management, and facility construction. Water quality, groundwater management, water bodies, and operational water use need to be constantly monitored.

Dominion Energy seeks to reduce impacts on aquatic ecosystems. Eels are stocked in waters at the Roanoke Rapids and Gaston hydroelectric dams, where the company operates upstream eel passage structures to enable American eels to bypass the dams. Water quality and biological monitoring accompany the program, and eel passage at both sites set record levels in 2024, with 87,463 eels at Roanoke Rapids and 20,352 at Gaston.

All of the company's ash management ponds and landfills are designed and operated to manage coal ash and limit releases of bottom ash, fly ash, and other coal byproducts to land and water. All of the company's ash management ponds and landfills are monitored for groundwater during and following closure.

Dominion installs real-time utility meters to measure water demand on premises, in addition to electricity and gas. Its 2024 office project in Dinwiddie, Virginia, earned LEED Silver and is equipped with a range of stormwater and domestic-water savings measures. Dominion tracks water quality and conditions near hydroelectric sites and offshore facilities, with special attention to underwater noise generated by offshore construction and marine-species protection.