How to Choose a Solar Installer in El Cajon
A practical, no-nonsense checklist for El Cajon homeowners comparing solar installers, what to verify, what to ask, and what to walk away from.
The installer checklist
- Active California contractor license (verify with the state board)
- Proof of insurance, general liability and workers' comp
- Verified reviews from real local homeowners
- Equipment brands you can research
- Written warranty terms for panels, inverter, and workmanship
- Multiple financing options explained without pressure
- Production guarantee in writing if promised
- Detailed roof assessment, not just a satellite glance
- Battery options that match newer billing rules
- Realistic installation timeline
- Clear contract language, no hidden fees or escalators
Contract red flags
- "Sign today for this price"
- Vague or missing equipment make/model
- Big "lifetime savings" numbers without underlying assumptions
- High-pressure financing pitches
- No clear workmanship or roof penetration warranty
- Mismatched company name vs the salesperson's badge
Good questions to ask
See our full list on the 20 questions to ask a solar company page. Even three or four serious questions can quickly separate a good installer from a slick sales pitch.
Frequently asked questions
Real answers for El Cajon homeowners exploring residential solar.
Should I get more than one solar quote?+
Yes, two or three reputable, apples-to-apples quotes are usually plenty. More than that turns into noise.
Does brand of panel really matter?+
It matters somewhat. Workmanship, design quality, and warranty support often matter more than which Tier 1 panel ends up on the roof.
How do I verify an installer's license?+
California contractor licensing information is publicly available through the state's licensing board. Always verify before signing.
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