Is your roof a good fit?
South-facing unshaded roof space is ideal. Age of roof matters — replace aging shingles before a 25-year solar install.
- Structural review for load
- Shade from trees reduces production significantly
- HOA rules vary — check before signing
System sizing and production
Installers use past utility bills to size arrays. Production varies by region, tilt, and equipment efficiency.
- Microinverters vs string inverters — shading implications
- Battery storage optional for backup, not required for savings
- Monitor apps track daily production
Incentives and financing
Federal Investment Tax Credit and some state/utility rebates reduce net cost. Compare cash purchase vs loan vs lease.
- You typically must own the system to claim the federal credit
- Leases transfer complexity at sale time
- Get production guarantees in writing
Choosing an installer
Use NABCEP-certified installers with local references. Compare equipment brands and warranties.
- 25-year panel warranties are common
- Clarify who handles permits and utility interconnection
- Avoid high-pressure same-day sign contracts
Member resources
Compare multiple quotes and understand net metering rules in your state.
- Review annual true-up billing if applicable
- Insurance may need a rider for the array
- See solar vendor offers on HomeRenoGuide.com
Roof age first, array second
Panels on a 20-year-old asphalt roof mean you pay twice when the shingles die. Check remaining roof life, attic ventilation, and whether the inverter location cooks in a west-facing attic. Interconnection rules and HOA aesthetic rules can stall a job that already has a signed bid.
- Ask who reroofs under an existing array and what that costs
- Shade from a neighbor’s tree is a production problem, not a panel-brand problem
- Keep the utility permission-to-operate letter with the house file