These are composite case studies — realistic decision walkthroughs built from typical household profiles, not identified individuals. The numbers use the same math as our calculators.
The high-rate purchase that still works without the credit
A Massachusetts household paying $210/month at ~31¢/kWh sized a 9 kW system at $24,700 in early 2026 — no federal credit, but a state rebate and strong retail-rate export credit. First-year savings near $2,900 put payback around 8.5 years. The lesson: in high-rate states, the 2026 incentive cliff hurt but didn't kill the math.
The net-billing state where the battery decided it
A California household under NEM 3.0 found exports worth ~75% less than retail. Panels alone showed a 14-year payback; panels plus a battery that shifted evening consumption showed 11 — but only because their time-of-use evening rate was steep. They bought the battery for the outage protection and treated the faster payback as a bonus, which is the honest way around: storage is its own decision.
The renter who went solar anyway
A Denver renter subscribed to a community solar farm at a contracted 10% discount to credit value, month-to-month term, transferable within the utility. No capital, no roof, roughly $130/year saved — small, but strictly positive with an exit clause. Details on the model in the Community Solar hub.