Are solar panels still worth it in 2026? The honest maths

Solar went from green gesture to genuine home economics and back to a subtler question. The honest answer for 2026: it can still be worth it - but the case now depends almost entirely on your specific house and, above all, your local electricity rate.

What changed

For years, the US federal tax credit did heavy lifting in the payback maths. That credit expired at the end of 2025, and quotes that still quietly assume it are a red flag. Without it, US payback periods average around a decade, with a wide spread - roughly five years in favourable states to eighteen-plus in poor ones. The single biggest driver is not how sunny your roof is; it is what you pay per kilowatt-hour. High-rate regions make every generated unit valuable; cheap-power regions make solar a slow investment.

The five questions that decide it for your house

1. Your rate and your usage. Pull a year of bills. Expensive power plus predictable daytime consumption is the ideal customer; cheap power plus mostly-empty daytime house is the hardest case.

2. Your roof. Age and condition matter more than angle: panels last twenty-five-plus years, so a roof needing replacement in five means paying twice. Shading from trees and neighbouring buildings trims output all day, every day.

3. Your local rules. Whether your utility offers net metering - crediting you for power you export - swings the maths enormously. Check it before any quote.

4. Buy or lease. Buying (cash or loan) keeps the savings; leases and power-purchase agreements trade a smaller bill drop for zero upfront cost and can complicate a future house sale. Read who owns the system and who claims any incentives.

5. The quote's honesty. Get three quotes, demand the payback maths in writing with the assumptions shown, and be suspicious of door-to-door urgency and "prices rising next month" pressure - the panel market is not that fragile.

Where solar clearly still shines

High-rate regions with good sun, homes with daytime occupancy or charging an electric car, and places pairing panels with a battery where outages or time-of-use pricing make storage pay. Elsewhere, the honest move is the boring one first: measuring and cutting waste and fixing heating control costs hundreds, not thousands, and every unit you never use improves any future solar maths - and if your real problem is outages rather than bills, size the backup properly instead.