Assume that the average power generation of a solar panel including day and night, rain and shine, or other adverse conditions---is 20% of the peak power generation.That is, assume that the panels generate an average power of 1.0 kW.Estimate the "break-even" time for your system by comparing the cost of your system to the cost of buying the electricity from the utility company at a price of $0.20 per kilowatt-hour (kWh).To do this, multiply the power (1.0 kW) by the number of hours (H) and then by $0.20/kWh.Then, equate this product to the cost of your solar system. Now solve for H, the break-even time in hours.Convert your answer to years or months. The cost of the system is 225$ 0.65 per watt