A 1MW solar power plant typically requires an investment between $1 million to $3 million, a figure that dances to the tune of various influencing factors. With the stage set, let's dissect this cost, offering you a granular insight into each expenditure aspect. Department of Energy (DOE) Solar Energy Technologies Office (SETO) and its national laboratory partners analyze cost data for U. solar photovoltaic (PV) systems to develop cost benchmarks. These benchmarks help measure progress toward goals for reducing solar electricity costs. . A 1-megawatt solar power plant represents a significant yet increasingly accessible investment opportunity in renewable energy, typically requiring $700,000 to $1. 3 million in initial capital while generating annual revenues between $140,000 and $180,000. Installed capacity, location, and technology play crucial roles in determining the total expenses, 3.