SolarGIS

High resolution solar radiation database developed from Meteosat MSG data. Available for Europe, North Africa, and Southwest Asia through the SolarGIS web portal.
SolarGIS

COMMERCIAL monitoring solar thermal R&D SUN POSITION Research Education apps Smartphone 3D SOLAR SHADINGS FREE ONLINE Solar inverter multi-energy portal PRO

Voltage drop

Computation of losses in solar wires :

Calculator : AC and DC electrical wire voltage drop and energy losses

PVGIS

Free online calculation and simulation of solar photovoltaic electrical power in Europe, Asia and Africa

PVGIS online worlwide solar simulator

PVwatts

Solar electricity simulator : free worldwide online calculation of solar photovoltaic power

PVWatts the US simulator

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SOLCAST provides live and forecast power and irradiance forecasts, plus low-uncertainty, satellite-derived historical time-series and TMYs. Visit SOLCAST website!

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Solar energy research at NREL includes photovoltaics, concentrating solar power, solar grid and systems integration, and market research and analysis. Visit NREL website!

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