A house that has approximately 2000 sq. ft. of area requires around 400 watts of power supply. On average, solar panels last for about 25 years. However, this directly depends on the usage, quality, and durability of the solar panels. The lifespan also depends on the company and the manufacturer.

A 2kW solar electric system will cost approximately $20,000. That total includes the cost for all components ? solar panels, panel mounts, and inverter ? and labor associated with installation. It does not however, reflect all the avoided costs, such as the tax breaks and the credits received through net metering.

In general, solar panels are very durable and capable of withstanding snow, wind, and hail. The various components of your solar power system will need to be replaced at different times, but your system should continue to generate electricity for 25 to 35 years.