Solar buying is a contract decision, a roof decision, and an electrical design decision. The panels are only one piece.
Before comparing proposals, make sure you understand your roof, utility rules, expected production, inverter design, and what happens during outages.
What to compare in a proposal
| Area | Questions |
|---|---|
| Roof | Age, condition, orientation, shade, available area |
| Array | Panel count, layout, production estimate, degradation assumptions |
| Inverter | String inverter, microinverters, optimizers, monitoring |
| Battery | Included, battery-ready, or not part of the design |
| Outages | Does solar shut down without a battery or special equipment? |
| Utility | Interconnection, export rules, metering, approval timeline |
| Contract | Ownership, lease, power purchase agreement, financing, warranties |
The shade and roof problem
Shading can make a good-looking roof perform poorly. Trees, chimneys, dormers, neighboring buildings, and roof planes all matter. Ask for the shade analysis and expected production by month, not just an annual number.
If your roof is old, solve that before installing panels. Removing and reinstalling panels for roof work can turn a cheap shortcut into an expensive detour.
Buying decision
Good solar shoppers ask:
- What happens if production is lower than expected?
- Who handles permits and utility approval?
- Who services the system after installation?
- What warranties cover panels, inverters, roof penetrations, and workmanship?
- What happens if I sell the home?
- If this is a lease or PPA, what rights and obligations transfer?
Avoid pressure tactics, vague savings claims, and any proposal that does not give you time to review.
Affiliate-friendly support gear
Most solar buying is installer-driven. Amazon is better for planning and maintenance basics:
- solar panel cleaning brush
- roof safety harness kit for professional-context research, not casual DIY
- home energy monitor
For off-grid and small-home thinking, compare this with Tiny Home Solar Power Sizing .
