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PVWatts API

by PVWatts Free tier

Energy production photovoltaic (PV) energy systems

weather

Quick Reference

Base URL https://developer.nrel.gov Auth type API Key Header Auth header Authorization: Bearer YOUR_TOKEN Rate limit 1K req/hour (with API key) Pricing Enterprise / contact sales Free quota None Documentation https://developer.nrel.gov/docs/solar/pvwatts/v6/ Endpoint status Live — HTTP 200 — endpoint is accessible2.85s (checked Mar 29, 2026) Builder score D 28% builder-friendly
Pricing
28
Latency
40
Depth
18

Authentication

See documentation for auth details

Authorization: Bearer YOUR_TOKEN

Pricing

Model subscription Starting price Enterprise / contact sales Free quota None

Free — PVWatts API by NREL (National Renewable Energy Laboratory). Estimates solar photovoltaic energy production. No cost, requires API key.

Key Endpoints

MethodPathDescription
GET / See documentation for endpoint reference

Sample Request

curl 'https://developer.nrel.gov'

Sample Response

{}

Data sourced from API Map. Always verify pricing and rate limits against the official PVWatts documentation.