A solar proposal should connect the roof’s condition, household electricity use, system design, utility rules, and contract terms. Current local prices are unavailable here; request comparable written proposals with production assumptions and ownership costs clearly separated.
Check whether the roof and site are ready
Ask the installer to assess roof age and condition, shading, orientation, obstructions, structural considerations, and any tree or roof work that may be needed. Installing over a roof near the end of its service life can make later repair more complicated.
Request a site-specific layout showing panel locations, equipment, conduit routes, and any proposed tree trimming. The proposal should explain assumptions about household electricity use and whether the design includes storage or backup power.
Read system and utility assumptions
Compare system size, equipment model numbers, estimated production methodology, degradation assumptions, and the treatment of shading. Ask what happens if actual roof conditions differ from the site assessment and whether monitoring and maintenance are included.
Interconnection, metering, and compensation rules are utility- and location-dependent. Confirm current terms with the utility and ask the installer who handles applications, permits, inspections, and permission to operate; do not treat a projected bill credit as guaranteed.
- Ask for the system design, equipment list, and production assumptions in writing.
- Confirm whether the quote includes any needed roof repair or electrical service work.
Compare payment and ownership carefully
A cash purchase, loan, lease, and power-purchase agreement can allocate ownership, maintenance, tax treatment, and home-sale responsibilities differently. Read escalation clauses, transfer rules, early termination language, warranties, and any lien or financing documents before signing.
Current local prices are unavailable here. Compare written bids that use consistent system assumptions and include all fees, financing terms, and exclusions. Verify any incentive directly with the administering agency and a qualified tax professional rather than treating a salesperson’s estimate as an eligibility decision.
Sources & further reading
Original references behind this piece. Follow the links to examine the source material for yourself.