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Simple Savings Estimator
This tool turns your average bill into an estimate of annual usage, a possible system size, and an illustrative energy value. It is not a quote, a price, or a guarantee. Change the assumptions if you have better numbers.
Estimated results
—Estimated annual usage
—Estimated system size
—Estimated annual production
—Illustrative annual energy value
Federal Residential Clean Energy Credit included: $0 for systems installed in 2026, based on current IRS guidance. Results change with your rate, usage, roof, shade, equipment, and utility rules. We will give you a site-specific proposal after a free consultation.
Assumptions and sources
- Default retail rate of $0.1591/kWh (15.91¢). U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A, average price of electricity to ultimate customers, Texas residential, August 2026, published October 23, 2026. EIA Table 5.6.A. Your actual GVEC, NBU, or Seguin rate will differ and often includes a fixed monthly service charge the estimator does not offset.
- Default production of 1,450 kWh per kW per year. A conservative planning figure for a fixed, south-facing rooftop in the Cibolo / Guadalupe Valley area, within the range typically produced by NREL’s PVWatts Calculator for south-central Texas. Actual production varies with tilt, azimuth, shade, weather, soiling, and equipment. You can paste a PVWatts result into the production field.
- Federal tax credit of $0 for 2026 installations. IRS, Residential Clean Energy Credit: the credit “is not available for any property placed in service after December 31, 2025.” IRS FAQ FS-2025-05 also states that if installation is completed after that date, the expenditure is treated as made after that date. IRS credit page. This is not tax advice.
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