Use a solar panel cost calculator using this formula to calculate the payback period. Plenty of metrics can help you decide which solar option is best for you, but studies show most solar shoppers ...

Kai Schuhmacher spent years traveling around Germany as a consultant for PV system owners. He said the question that all customers immediately ask is: “When will my photovoltaic system pay off?” The ...

Loans have an interest rate, monthly payment amount and number of payments specified in the loan documents. Interest-only loans don't apply any of the payment to the principal. At the end of the loan, ...