Solar Energy Services for Professionals
The project | Overview | References

Time Series of Solar Radiation Data - for Free

A problem of units ?
of terminology ?
Consult the Education service.

To launch a service, click on the appropriate button (rectangle) on right.

Useful Links:
- Description of the output column content of each service.
- The plane orientations and radiation components and their usage.
- how the HelioClim data are aggregated from 15-min to the monthly time step
- The different versions of HC3. Please note that the most advanced version is HelioClim3v4, we recommend to use this version.
- link to the corresponding services for Registered Users

Summary of the free data:

  • HC1: whole dataset without restriction (i.e. from 1985 to 2005, approx. 20 km spatial res)
  • HC3: all the services but restricted to the period 2004-02-01 to 2005-12-31.
  • NASA-SSE: whole dataset without restriction (from July 1983 to June 2005, 1 degree of spatial res)

Horizontal Plane
global radiation
Inclined Plane
global, direct, diffuse
Plane normal to sun rays (DNI)
global, direct, diffuse
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1 min to 30 min

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