Observed arrival · 2026-09-06
StraightWatt, the solar calculator that shows its work
A source-cited solar economics calculator for 2026, covering household bills, state electricity rates, system costs, payback, and federal incentives.
Field notes
The calculator asks for a state and monthly electricity bill, then lets users move the assumptions used in its calculations. Its examples compare cash purchases across years and distinguish homeowner-owned systems from leases or PPAs. The site says each data record carries a source and verified_on date, with unverified values left null, and publishes a 12-state electricity-price list headed by California at 34.74¢ and Texas at 15.94¢.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue