estimate_production
Honest-range annual solar production estimate (kWh/year ± band, with assumptions) for a ZIP code, from either a proposed system size (kW) or a monthly bill. Use to sanity-check installer quotes or size a system before talking to anyone. [20 anonymous calls/caller/24h; then 100 free calls/key/30d; active Builder required for sustained informational use]
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| country | No | ISO 3166-1 alpha-2 country code. Omit for US. Non-US estimates use a default solar resource and say so honestly. | |
| zipCode | No | Optional postal code of the property. US: 5-digit ZIP. Other countries: your local postal code (pass country too). Omit it to use documented national assumptions. | |
| systemKw | No | Proposed solar system size in kW-DC. Omit to have a size recommended from the bill. | |
| monthlyBillUsd | No | Average monthly electric bill in USD (used to size a system when systemKw is omitted). |