Department of Energy

NREL/NLR Developer Network APIs

The National Renewable Energy Laboratory (NREL, transitioning to NLR) Developer Network publishes a portfolio of REST APIs covering solar resource and PV simulation, alternative fuels and stations, electricity utilities and rates, transportation, geothermal, and energy economics. All APIs share a common API key model issued through api.data.gov. Existing developer.nrel.gov consumers must migrate to developer.nlr.gov by April 30, 2026.

GitHub

Documentation

📖
Documentation
https://developer.nlr.gov/docs/

Other Resources

🔗
Solar APIs
https://developer.nlr.gov/docs/solar/
🔗
Electricity APIs
https://developer.nlr.gov/docs/electricity/
🔗
Signup
https://api.data.gov/signup/
🔗
Data Catalog
https://data.nlr.gov/

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/nrel-developer-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: department-of-energy:nrel-developer-api
name: NREL/NLR Developer Network APIs
description: The National Renewable Energy Laboratory (NREL, transitioning to NLR) Developer Network publishes
  a portfolio of REST APIs covering solar resource and PV simulation, alternative fuels and stations,
  electricity utilities and rates, transportation, geothermal, and energy economics. All APIs share a
  common API key model issued through api.data.gov. Existing developer.nrel.gov consumers must migrate
  to developer.nlr.gov by April 30, 2026.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://developer.nlr.gov/
baseURL: https://developer.nlr.gov/api
tags:
- Alternative Fuels
- Buildings
- Electricity
- Geothermal
- NREL
- Renewables
- Solar
- Transportation
properties:
- type: Documentation
  url: https://developer.nlr.gov/docs/
- type: Solar APIs
  url: https://developer.nlr.gov/docs/solar/
- type: Electricity APIs
  url: https://developer.nlr.gov/docs/electricity/
- type: Signup
  url: https://api.data.gov/signup/
- type: Data Catalog
  url: https://data.nlr.gov/
contact:
- FN: NREL Developer Network
  url: https://developer.nlr.gov/contact-us