Cost Overview: Residential solar panel installations typically range from $15,000 to $25,000, while battery storage costs can vary from $5,000 to $15,000, with federal tax credits providing up to a 30% reduction in out-of-pocket expenses. 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. . NLR analyzes the total costs associated with installing photovoltaic (PV) systems for residential rooftop, commercial rooftop, and utility-scale ground-mount systems. This work has grown to include cost models for solar-plus-storage systems. Your actual cost depends on your home's energy needs, roof characteristics, location and other factors, all of which we'll break down in. . The expense associated with six solar panels can significantly vary depending on several factors. Installation fees can add an additional $1,000 to $3,000. . This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www. NREL prints on paper that contains recycled content.