Payback Math Refuses to Sell You the Happy Answer

Why it surfaced

Payback Math separates bill savings from wishful brochure math—and reports that home batteries pay for themselves in 0 of 51 states on bill savings alone. Its models account for details other comparisons often omit, including charging losses, public fast-charging costs, climate, and real-world solar losses.

State-by-state calculators test whether solar panels, EVs, heat pumps, and home batteries actually pay for themselves.