Path-Q Solar

How can I estimate monthly bill savings before receiving a solar quote?

Answer

Use historical monthly consumption, estimate monthly solar production, assign each kWh to avoided purchases or exports under the applicable bill structure, and subtract fixed charges that solar will not remove.

Key points

  • Monthly production and consumption timing matter.
  • Do not assume every generated kWh offsets a retail-priced kWh.
  • Use ranges for production and future rates.

What it depends on

  • Bills and rate structure
  • Roof production estimate
  • Self-consumption and export treatment

Risks and trade-offs

  • Annual averages can hide seasonal shortfalls.
  • Rate or policy changes can alter savings.

Information you may need

  • At least one year of bills
  • Hourly or monthly production estimate
  • Export terms and fixed charges

Your next step

What to do next

Build a month-by-month estimate using conservative, central, and optimistic production and value assumptions.

Path-Q

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Some details may depend on your location, installer, utility, incentives, regulations, or specific property.

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