Guides
Guides and reference
What to check before you sign, how the rules changed in 2026, and the data behind the calculators. Each page shows when it was last checked and lists its sources.
Before you buy or lease
Before you sign
Your right to cancel, state solar sales laws, ten questions and red flags.
How to choose a solar company
License, who really installs, certification, reviews and bankruptcy risk.
Contract checklist
A printable list to go through a solar contract line by line.
Lease, PPA, loan or cash
Which costs less per kWh in 2026, and when each makes sense.
What changed in 2026
The end of the homeowner credit and the deadlines still ahead.
Reference data
Solar by state
Electricity prices, sun, payback and credit rules for all 50 states and DC.
Solar by utility
How 55 large utilities credit exported power.
Lease and PPA terms by company
Escalators, transfers and buyouts.
Solar company bankruptcies
Who services the old contracts now.
For owners
All guides for people who already have solar: true-up bills, selling a house, a new roof, and an installer that went out of business.