Commercial and Residential Alternative Energy Systems

As you can see, homeowners, on the average, will see a return on their investment usually at 7.8 years.

If the homeowner finances the PV system there, assuming a 10-year loan at 8.32% interest, monthly payments would be $216.00. A homeowner would be in the black by year 3, (loan payment will be less per month than energy would have cost) assuming annual HELCO increases of 7.5% this year and only 3% in subsequent years.