Per-unit ranges can be expressed as $1,200–$2,000 per kWh of usable capacity for mid-range lithium systems, and $2,000–$3,000 per kWh for high-power setups with advanced features. Assumptions: region, specs, labor hours. The benchmarks in this report are bottom-up cost estimates of all major inputs to PV and energy storage system installations. Bottom-up costs are based on national averages and do not necessarily represent typical costs in all local markets. DE-AC36-08GO28308 Technical Report NREL/TP-7A40- 87303 September2023 U. But why the drop? Three game-changers: Battery Breakthroughs: Lithium iron phosphate (LFP) batteries now dominate 72% of installations, lasting 6,000+ cycles – that's like charging your phone daily for. 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.
