Solar accounting 101: How to estimate the annual credit/deficit for your power bill, for a given solar system

October 1, 2019 manager Leave a comment
A key reason that someone would get rooftop solar is because they would dearly love to never pay another power bill again. The problem is it is not immediately obvious which PV system will eliminate your bill as it depends on a number of factors.   If you are unfamiliar with solar it is difficult to know what questions to ask a solar retailer and how to distinguish valid claims from invalid claims. So how do know what your annual power bill is likely to be for a given solar system?  Here is a broad overview of how to work that out: