Most Solar installations have Break even at about 7 - 10 years from date of operation. Useful life of panels, i.e, years required for their output to fall to 8

Most Solar installations have Break even at about 7 - 10 years from date of operation. Useful life of panels, i.e, years required for their output to fall to 80% of full output is in the range of 20-25 years. After the break even period, most of the cash flow is profit.