For example, if you live in a sunny location where the Global Solar Atlas shows 1,700 kWh/kWp, a 6-kW system would yield 10,200 kWh/year. The electricity output of photovoltaic modules depends on ...
the larger the solar panel system necessary to offset your usage. For example, based on our average cost of a solar panel at $3 per watt with installation, a 6 kW system would run you around $ ...
The exact amount depends on factors like system efficiency and the amount of sunlight (or solar irradiance) your area gets. Considering the difference between a 7 kW system and an 8 kW system is ...