Services pour professionnels en énergie solaire et rayonnement

This graph exhibits the number of requests, in thousands, made to the HelioClim databases per year. Data for current year result from projection. HC1, HC2, HC3 means respectively HelioClim-1, -2 and -3.

In 2008, the use of HC-3 was recommended in place of HC-2.

A request may deal with a single geographical point or an area, a single instant or a large time period. Prior to 2006, the amount of data for one request was limited to 1 year for daily values and 1 month for hourly values; this explains the fall in request number in 2006 compared to previous years for HC-1.