The honest math
for your roof.
Installers sell residential solar on 25-year promises built from optimistic assumptions. We run the numbers independently — your roof simulated hour by hour, outcomes bracketed from bad luck to good luck on rates and panel aging, against everything else your money could be doing instead. No installer affiliations. No lead-gen.
Should I go solar?
Address + a utility bill. We build an independent forecast of what your roof will produce and carry the uncertainty in rates, weather, and panel aging all the way through. Output is a range of 25-year outcomes (P10–P90), not a single headline number.
Check this proposal.
Drop your installer's PDF. We check their math against independent benchmarks — where the year-1 production, the assumed pace of rate hikes, the dealer fee, or the inverter sizing drifts, by how much, and which lever drives the gap.
Did it actually work?
After the install. We read your utility bills and your inverter's own monitoring (Enphase / SolarEdge / Tesla) and report, month by month, how reality compares with the forecast you were sold — on the bill and on the roof.