Idaho Power has submitted a 20-year plan to state regulators that phases out coal-fired power plants by 2028 as part of its effort to provide only clean energy by 2045, the company said Tuesday. Idaho Power in a news release said its 2021 Integrated Resource Plan submitted to the Idaho Public Utilities Commission moves the company away from coal and toward renewable energy, battery storage, energy efficiency and additional power that will come with the completion of a transmission line connecting to the Pacific Northwest.