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New version of PVGIS is online
Topic: Photovoltaic   Posted:2006-09-06
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PVGIS web site offers data and tools for geographical assessment of solar photovoltaics. New features have been put online that include heating degree days, probability distribution of global irradiation, assessments of 2-axis tracking PV systems and display of the horizon outline for any location in Europe, Africa and South West Asia. PVGIS communicates in 6 languages now, French and Spanish being currently implemented. [Original announcement here]

Here is an example of what you can do with the PVIS web site, entering data for Asse, Belgium:

Location: 50°54'45" North, 4°6'7" East, Elevation: 71 m a.s.l,
Nearest city: Asse, Belgium (0 km away)
Optimal inclination angle is: 34 degrees
Annual irradiation deficit due to shadowing (horizontal): 0.0 %
Month
Irradiation at inclination: (Wh/m2/day)
0 deg.
Jan 637
Feb 1385
Mar 2161
Apr 3537
May 4541
Jun 4678
Jul 4870
Aug 4111
Sep 2762
Oct 1673
Nov 860
Dec 494
Year 2649