About the tool

Battery decisions need a useful number.

Battery Calculator is an independent utility-specific planning tool for homeowners who have a battery quote and want a clearer way to judge it.

What we focus on

Each calculator starts with one utility's published incentives, rates, and program rules. It compares the quoted project with the no-battery alternative and shows a range instead of implying that a ten-year forecast is exact.

What we do not do

How to use the result

Use the result to ask better questions: Is the quote below the decision boundary? Which rule needs confirmation? Would a smaller battery or a different rate plan change the answer? Verify the current official program terms before committing.