Prices are compiled from three sources: Nemet (2009) for 1975-2003, Farmer & Lafond (2016) for 2004-2009, and IRENA for 2010 onward. Due to limited data availability, we use the Global Price Index series reported by IRENA, based on pvXchange benchmark prices for modules sold. Average price of solar modules, expressed in US dollars per watt, adjusted for inflation. Help consumers understand the cost of various solar panel systems with its detailed price guide, covering different options. The Growatt SPF 6000 ES-H is a 6kW off-grid/hybrid solar inv. 12 kWh Cycle Life: >8000 Cycles Protection. -Nominal voltage: 12 Volts -Rated capacity: 120 Ampere Hour. The Bison 5kW LV Battery is a high-performance 5 kW lithium. Average costs for residential solar modules range between $0. Call one of our experienced solar design techs to talk about your project toll free at 888-498-3331. If you have your most recent electric bill handy, we'll. We've carefully selected solar panels from the industry's top manufacturers, emphasizing long term system performance, quality, track record, field history, and low cost. These panels are designed for efficient solar energy conversion, making rooftop solar PV (photovoltaic) systems more attainable.