Typical utility-scale solar plants range from several tens of millions to hundreds of millions of dollars, depending on size, technology, and location. Per-unit costs commonly fall in the 0. 50 per watt range, with larger projects achieving better value through economies of. Each year, the U. 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. Assumptions:. The account requires an annual contract and will renew after one year to the regular list price. A solar power tower at Crescent Dunes Solar Energy Project concentrating light via 10,000 mirrored heliostats, occupying an area of 13 million sq ft (1. Assumes standard fixed-tilt or.