10 Solar Mistakes Homeowners Make (and How to Avoid Them)
From skipping multiple quotes to ignoring net metering, these are the most common solar mistakes — and how to avoid each one before you sign.
The pricing mistakes
Accepting the first quote, comparing only $/W without warranty terms, and ignoring financing interest are the top pricing errors. Getting 3–5 quotes and normalizing for equipment, degradation, and warranty typically saves 10–20%.
The policy mistakes
Ignoring your net metering type, not checking incentive caps, and assuming the federal credit still applies in 2026. In net-billing states, sizing for exports instead of self-consumption is the single most expensive error.
The contract mistakes
Not reading the escalation clause on leases, skipping the workmanship warranty length, and failing to confirm who owns the SRECs. Every one of these can cost thousands over 25 years.
FAQ
What is the biggest solar mistake?
Buying without comparing quotes and without understanding your net metering — the two together can double your real payback period.
How do I avoid solar scams?
Get 3–5 written quotes, verify the installer's license and insurance, read the full contract (escalators, warranties, ownership), and never sign on a "today only" deal.
Should I wait for the federal tax credit to return?
Don't count on it — Section 25D expired Dec 31 2025 with no announced return. Base your decision on current state incentives and rates.
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Sources
- U.S. EIA — electricity rates by state, eia.gov/electricity/monthly
- NREL PVWatts v8 — solar production by location, pvwatts.nrel.gov
- DSIRE — state incentives and net metering, dsireusa.org
- See how every figure on this page is calculated — PVFig methodology.
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