# NASA POWER (Prediction Of Worldwide Energy Resources)

A NASA API and data viewer giving satellite- and model-derived solar radiation and weather for any point on Earth, with 300+ parameters at hourly, daily, monthly and climatology levels, in units tailored for renewable energy, buildings and agriculture.

- Category: Weather and climate · by NASA Langley Research Center
- Website: https://power.larc.nasa.gov/
- Live data: yes
- Checked on the official pages: 2026-10-23

## API

- Official API: yes, docs https://power.larc.nasa.gov/docs/services/api/
- Key needed: no
- Price: Free; limits: No published number; the API returns 429 Too Many Requests when overloaded. Request no finer than the native 0.5 x 0.625 degree (meteorology) / 1 x 1 degree (solar) grid
- Base URL: https://power.larc.nasa.gov/api/
- Formats: json, geojson, csv, ascii, netcdf, icasa

Example request:

```
https://power.larc.nasa.gov/api/temporal/daily/point?parameters=T2M,ALLSKY_SFC_SW_DWN&community=RE&longitude=13.41&latitude=52.52&start=20240101&end=20240107&format=JSON
```

## Data and license

- Download: https://power.larc.nasa.gov/docs/services/ (csv, netcdf, json)
- License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); covers POWER data products
- Commercial use OK
- Credit required
- Embedding with conditions
- Quote (api_official): "Full REST API documentation (Swagger/OpenAPI): https://power.larc.nasa.gov/api/pages/" (https://power.larc.nasa.gov/llms.txt)
- Quote (api_key): "All endpoints are publicly accessible with no authentication." (https://power.larc.nasa.gov/llms.txt)
- Quote (api_price): "Access POWER's free, low-latency, high-accuracy, community-specific datasets offered in customizable units and formats." (https://power.larc.nasa.gov/)
- Quote (license): "License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)" (https://power.larc.nasa.gov/llms.txt)
- Quote (commercial): "License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)" (https://power.larc.nasa.gov/llms.txt)
- Quote (attribution): "When POWER data products are used in a publication include both POWER 's Reference and POWER 's Data Reference in any work product or publication." (https://power.larc.nasa.gov/docs/referencing/)
- Quote (attribution_text): "The data was obtained from National Aeronautics and Space Administration ( NASA ) Langley Research Center's Prediction Of Worldwide Energy Resources ( POWER ) project funded through the NASA Earth Science Division." (https://power.larc.nasa.gov/docs/referencing/)
- Quote (embed): "the Project requests notification if POWER data is transmitted to other researchers." (https://power.larc.nasa.gov/docs/referencing/)
- Quote (limits): "429 Too Many Requests Too Many Requests." (https://power.larc.nasa.gov/docs/services/api/)
- Quote (limits_resolution): "Please ensure that you properly request data from the POWER data services at no higher than its current resolution. The POWER data products are currently available at 0.5 x 0.625 degree resolution for meteorology and 1 x 1 for solar parameters." (https://power.larc.nasa.gov/docs/services/)
- Quote (download): "For downloading the monthly temporal level of the POWER Data Archive, it is recommended to use the Registry of Open Data on AWS ." (https://power.larc.nasa.gov/docs/services/)

## Rules for an agent

- Use /api/temporal/{hourly|daily|monthly|climatology}/point with parameters=, community=RE|AG|SB, start/end as YYYYMMDD and format=JSON|CSV|NETCDF; no key, but the latest 2-3 months are provisional and get replaced, and the solar grid is 1 degree so nearby points return the same values.
- Credit NASA Langley Research Center's POWER project (CC BY 4.0), including service name, version and access date in publications.
- Do not request points finer than the data grid (0.5 x 0.625 degree meteorology, 1 x 1 degree solar); back off on HTTP 429.
- Treat the last 2-3 months as provisional; re-fetch later for climate-quality values.

## Agent access

- llms.txt: https://power.larc.nasa.gov/llms.txt

Human page: https://agentgid.com/resources/nasa-power/
Source: AgentGid (agentgid.com). Facts are quoted from the site's own pages; check the license page before you ship.