Rooftop Solar Payback Factors for Dallas, TX

What your electricity rate means for solar: every kilowatt-hour your panels generate is one you don't buy from the grid — so the more you currently pay per kWh, the more each hour of sunshine is worth. TX's residential rate is about middle-of-the-pack (#5 of 15 we track), close to the average across the states we track. That matters because solar's whole return comes from avoided grid purchases: a higher rate like this generally shortens the payback period and improves the case for panels here.

Why your roof's age comes first: solar panels are built to last 25 years or more, but they can only outlast the roof they're bolted to. The typical home in Dallas was built around 1979 — about middle-of-the-pack (#8 of 20 we track) for housing age among the cities we track (older housing ranks higher). Homes this age have very often already been through at least one roof, so the real question isn't just "should I add solar" — it's "how many years of life does my roof have left," because installing panels on a roof that needs replacing in five years usually means paying to remove and reinstall the whole array for the re-roof. A good installer checks this before quoting panels — and it's exactly why we cover roofing alongside solar.