THE SHORT ANSWER
A proposal should distinguish projected solar generation, household consumption and future utility billing. None of those estimates is a guaranteed saving.
Use complete member history
Collect 12 consecutive SECO statements and monthly kWh, noting estimated reads, vacant periods, new appliances or planned EV and pool loads. Do not size from dollars alone.
Expose production assumptions
Record array size, orientation, tilt, shade, losses and weather dataset. PVWatts can provide a transparent comparison estimate, but NREL does not inspect or approve the proposed system. [2]
Trace the billing model
Ask which current SECO program information, continuing charges, imported energy and exported energy treatment the salesperson used. A “100% offset” label does not mean every future bill is zero.
Separate financing and tax claims
Compare cash price, financed amount, APR, fees and total payments independently from energy estimates. Verify current tax eligibility with a qualified adviser and written official guidance.
Before your next conversation
- Collect 12 SECO bills.
- Save production-model inputs.
- Identify utility assumptions.
- Review financing separately.
Primary sources
- SECO Energy: Net Metering
Primary source reviewed September 11, 2026. Utility rules, rates, forms and project requirements remain subject to the current account, equipment and property review.
- National Renewable Energy Laboratory: PVWatts Calculator
Primary source reviewed September 11, 2026. Utility rules, rates, forms and project requirements remain subject to the current account, equipment and property review.
- U.S. Department of Energy: Homeowner’s Guide to Going Solar
Primary source reviewed September 11, 2026. Utility rules, rates, forms and project requirements remain subject to the current account, equipment and property review.
Planning examples and questions are Origin’s editorial guidance, not a property-specific diagnosis, engineering design, tax determination or promise of savings. Manufacturer and utility references do not imply an affiliation with Origin.
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