Solar Panel Decision Coach
Worth it? Sometimes. Trap? Sometimes. Math first.
Door-to-door solar salespeople
Some are reputable, many are NOT. Use them only as a starting point. Always get 3 quotes from companies YOU find. (See our Door-to-Door Scam Defense.)
When solar makes sense
- You own your home (not renting).
- You plan to stay 7+ years.
- Roof faces south, southeast, or southwest.
- Roof is younger than 10 years (otherwise, replace before solar).
- Few trees shading the roof.
- Your electric bill is over $100/month.
- You can use the federal tax credit (30% through 2032) — need actual tax liability.
Buy vs lease vs PPA
- Cash purchase — best if you have $20-30k. Best return.
- Solar loan — second-best. You own panels but pay over time.
- Lease / PPA — solar company owns panels. You "rent" them. Lower upfront cost but tied to your house — can complicate selling. Worse long-term financially.
Push hard against lease/PPA unless you have NO other choice.
Get 3 quotes the right way
- Use EnergySage.com to compare quotes from vetted installers.
- Add a local installer found on Yelp/Better Business Bureau.
- Add quote from a national: SunRun, Sunpower, Tesla.
- Compare cost per watt — under $3-3.50/watt is competitive.
- Verify the system size matches your usage (don\'t oversell — common scam).
Hidden costs and traps
- Net metering changes — many states reduced credits in 2024 (CA NEM 3.0). Run NEW math, not old projections.
- Re-roofing — solar panels last 25 years. Roof should too. Don\'t install solar on an 18-year-old roof.
- Insurance increase — your homeowners might rise.
- Property tax — added panels may raise property tax in some states.
- HOA approval — required in many.
- Selling the house — leases complicate it. Owned panels are usually fine.
Free resources
- EnergySage — neutral marketplace + education.
- Project Sunroof (Google) — free roof analysis. project-sunroof.withgoogle.com.
- NREL PVWatts — free DIY production estimator.
- DSIRE database — finds state and local solar incentives.
For most
If your bill is under $100/month or you\'ll move in 5 years — skip solar. If $200+/month, sunny climate, owning, staying — likely worth investigating with 3 honest quotes. Take 6 months to decide. Real solar pays back over 20 years; never let urgency rush you.