WASHINGTON, April 1 [Category: Environment] -- The Sierra Club posted the following news release: * * * PacifiCorp, Parent Company of Rocky Mountain Power, Files Lackluster 2025 Energy Plan Yesterday, PacifiCorp, the parent company of Rocky Mountain Power which serves Wyoming, released its 2025 Integrated Resource Plan (IRP), significantly scaling back and slow-walking investments in renewable energy, instead prioritizing expensive and volatile fossil fuels. The IRP, meant to guide the utilit more PR