MCP server for NREL solar APIs: PVWatts v8 production estimates and NSRDB solar resource data
Listed on its own since 2026-09-27. Until then it was part of solar-data, where its earlier checks remain.
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# solar-data-mcp-nrel MCP server for NREL solar APIs — the production-modeling domain of [solar-data-mcp](https://github.com/hoodsy/solar-data-mcp). | Tool | Answers | |---|---| | `estimate_production` | "What would an 8 kW system in Mesa produce?" (PVWatts v8) | | `get_solar_resource` | "How sunny is Denver, really?" (NSRDB GHI/DNI) | | `compare_orientations` | "How bad is my north-facing roof?" (tilt × azimuth sweep) | | `size_system_for_target` | "My home uses 9,000 kWh/yr — what size covers it?" | Run standalone: `uvx --from solar-data-mcp-nrel nrel-solar-mcp` with a free `NREL_API_KEY` (<https://developer.nlr.gov/signup/>; `DEMO_KEY` works at ~10 req/hr). Most users want the combined [`solar-data-mcp`](https://github.com/hoodsy/solar-data-mcp/blob/main/packages/solar-data-mcp/README.md) server instead — all four domains plus the skill and report layer on one install. Quickstart: [repo README](https://github.com/hoodsy/solar-data-mcp#quickstart).
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