The company will build the plant in a bid to ensure the stability of the power grid and to be able to add more solar and wind energy capacity.
The notice represents the start of the environmental review process for the Schofield scheme, which needs the approval of the Hawaii Public Utilities Commission, HECO spokesman Darren Pai told the newspaper by e-mail.
Following the submission of the EIS preparation notice, the project will be subject to a 30-day comment period during which the local residents will be able to take part in the preparation of the draft environmental impact statement.
HECO has proposed to install the 50 MW station at the Schofield Barracks census-designated place in Wahiawa district. The plant is to be built, owned, operated and maintained by one of the company's subsidiaries. The unit will also construct a 46-kV sub-transmission line that will connect the plant to the power grid.