An empirical synthetic law between the modules energy output and the meteorological data

For years, Genec has been intensively using its outdoor testing platform in Provence (South of France) to perform long-term modules energy output measurements. Former works at Genec showed an empirical law between the daily energy output, the energy input in kWh per square meter and the daily average ambient temperature. Recent measurements and intensive use of relational databases precise this empirical law. Determination of module efficiency in all irradiance and temperature conditions allow to express module efficiency as a linear function of average module temperature and to model this linearity. This work is funded in part by the French Agency for Environment and Energy Management (ADEME).