> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/getting-started/nasa-power.md).

# Solar and climate (NASA POWER) in Duaer

In Duaer: Daily or monthly solar radiation, temperature, rain, wind, and humidity for any point since 1981, from NASA POWER. One successful search uses 1 credit.
## What you get

Duaer Solar and climate (NASA POWER) reads satellite and model estimates for any point on Earth since 1981. It suits solar sizing, agriculture, and climate checks where no weather station exists.

Pick Duaer Data → Solar and climate (NASA POWER) in the node creator, or open the [data market](/getting-started/data-market.md). Related: [Weather history](/getting-started/weather-history.md), [Elevation](/getting-started/elevation.md).

## When to use it

- Estimate solar energy for a site, in kWh per square metre per day.
- Compare monthly temperature and rain for a location over years.

## When not to use it

- A forecast for the coming days. Use [Weather forecast](/getting-started/weather.md).
- Hourly station-like history. Use [Weather history](/getting-started/weather-history.md).

## Search on the canvas

1. Open the node creator and pick Duaer Data → Solar and climate (NASA POWER).
2. Fill Place (such as Dubai), From, and To. Optional: Latitude, Longitude, Step (day or month).
3. Limit defaults to 10, max 20. Execute.

A search uses 1 credit only when it returns rows. No rows, wrong input, or an upstream failure uses 0.

## Call the API

- GET https://api.duaer.com/v1/data/nasa-power?place=Dubai&from=2024-06-01&to=2024-06-07
- Authorization: Bearer <Duaer key>

The call skill below matches Copy skill in the Duaer data market, with parameters, examples, and result fields.

## Call skill

Same text as Copy skill.

```
---
name: duaer-nasa-power
description: >-
  Duaer Solar and climate (NASA POWER). Daily or monthly solar radiation, temperature, rain, wind, and humidity for any point since 1981, from NASA POWER.
  One successful search uses 1 Duaer credit.
---

# Duaer Solar and climate (NASA POWER)

Duaer Solar and climate (NASA POWER) reads satellite and model estimates for any point on Earth since 1981. It suits solar sizing, agriculture, and climate checks where no weather station exists.

## When to use

- Estimate solar energy for a site, in kWh per square metre per day.
- Compare monthly temperature and rain for a location over years.

## When not to use

- A forecast for the coming days. Use https://skills.duaer.com/weather.md.
- Hourly station-like history. Use https://skills.duaer.com/weather-history.md.

## Call

`GET https://api.duaer.com/v1/data/nasa-power?place=Dubai&from=2024-06-01&to=2024-06-07`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Get a Duaer key: https://skills.duaer.com/keys.md

## Parameters

Provide `place` (or `latitude` and `longitude`), `from`, and `to`.

- `place` — Place name, such as Lhasa. Duaer looks up its coordinates.
- `latitude`, `longitude` — Optional. Coordinates instead of a place name.
- `from` — First day, YYYY-MM-DD. Data starts in 1981.
- `to` — Last day, YYYY-MM-DD. Recent days appear after about a week.
- `step` — Optional. `day` or `month`. Default `day`. Daily ranges stay within one year; monthly ranges within ten years.
- `limit` — Optional. Rows to return, from 1 to 20. Default 10.

## Examples

- `GET https://api.duaer.com/v1/data/nasa-power?place=Dubai&from=2024-06-01&to=2024-06-07` — one week of daily sunlight and heat in Dubai.
- `GET https://api.duaer.com/v1/data/nasa-power?place=Kunming&from=2023-01-01&to=2023-12-31&step=month&limit=12` — monthly climate for a year.

## Result

The response is `{ "items": [...] }`. Each item has `source`, `title`, `url`, and `summary`, plus:

- `place`, `latitude`, `longitude` — the point used.
- `period`, `step` — day (YYYY-MM-DD) or month (YYYY-MM), oldest first.
- `solarKwhM2Day` — all-sky solar radiation on a flat surface.
- `temperatureMean`, `temperatureMax`, `temperatureMin` — °C at 2 m.
- `precipitationMmDay`, `windSpeedMs`, `humidityPct` — rain, wind at 10 m, relative humidity.

Fields without a value are left out.

## Credits

A search that returns at least one row uses 1 credit.
An empty search, a search that finds nothing, or a failed search uses 0.
Wrong input returns 400 with a message and uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

## Related

- https://skills.duaer.com/weather-history.md — Duaer Weather history
- https://skills.duaer.com/elevation.md — Duaer Elevation

```
## Questions

### How many credits does a Solar and climate (NASA POWER) search use in Duaer?

One credit when Duaer returns rows. A search with no rows or an error uses 0.

### How long a range can Duaer NASA POWER return?

Duaer NASA POWER returns up to one year of days or ten years of months. Data starts in 1981; recent days appear after about a week.

## Related

- [Weather history in Duaer](https://doc.duaer.com/getting-started/weather-history.md)
- [Elevation in Duaer](https://doc.duaer.com/getting-started/elevation.md)