Solar Resources by Class and Country

Metadata Updated: October 9, 2017

These estimates are derived from the best available solar resource data available to NREL. Resources are organized by class and country. Resolution varies spatially from 1 km to 1 degree (approximately 100 km) depending on the data source. High spatial resolution datasets (1 km to 40 km cells) were modeled to support country or regional projects. Where high resolution datasets were not available, data from NASA’s Surface Meteorology and Solar Energy (SSE) version 6 database were used.

The data represent total potential solar energy per year as a function of land area per solar class (KWh/m²/day). Each solar class correlates to a specific 0.5 kWh/m²/day range. Energy is calculated by multiplying the productive land by the class, conversion efficiency and number of days per year. In this case, a standard calendar year of 365 days was used. The conversion efficiency rate applied was 10%.

E = Productive Land * kWh/m²/day * 365 days * 10% efficiency

The solar data has been derived from solar data measured or modeled between 1961 and 2008, depending on the dataset.

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons CCZero

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Metadata Created Date August 29, 2017
Metadata Updated Date October 9, 2017

Metadata Source

Harvested from Energy JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date August 29, 2017
Metadata Updated Date October 9, 2017
Publisher National Renewable Energy Laboratory
Unique Identifier
Donna Heimiller
Maintainer Email
Public Access Level public
Bureau Code 019:20
Metadata Context
Schema Version
Catalog Describedby
Data Quality True
Format application/
Harvest Object Id 9491ec03-4fb6-4412-9389-7ec040094a89
Harvest Source Id 8d4de31c-979c-4b50-be6b-ea3c72453ff6
Harvest Source Title Energy JSON
Homepage URL
Data Last Modified 2015-08-21T20:52:10Z
Program Code 019:000
Source Datajson Identifier True
Source Hash 3f7e0a30d4b73b3475e3d8caebd57350e4fa4cc6
Source Schema Version 1.1

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