In 2025, solar cell prices for residential users range from $2. 80 per watt, but this can vary by the location and size of the system, as well as the complexity of the installation. Department of. Hard costs involve the cost of the solar panels, solar inverters, solar batteries, racking systems, and electrical components. These indirect costs encompass a significant part of the final billing. Your actual cost depends on your home's energy needs, roof characteristics, location and other factors, all of which we'll break down in. NLR analyzes the total costs associated with installing photovoltaic (PV) systems for residential rooftop, commercial rooftop, and utility-scale ground-mount systems. Department of Energy (DOE) Solar Energy Technologies Office (SETO) and its national laboratory partners analyze cost data for U. These benchmarks help measure progress toward goals for reducing solar electricity costs. System purchases offer dramatic savings: Buying panels as part of a complete solar system costs 40-65% less per panel ($0. 40/watt), making bulk installation the most economical choice for homeowners.