The ESTI Outdoor test field

The European Solar Test Installation (ESTI) is a European reference laboratory for the verification of the power and energy generation of photovoltaic devices.

ESTI is located at the JRC’s Ispra site in Italy. It has been at the forefront of developing standards for electrical performance of PV products since its launch in the late 1970’s.

Outdoor testing at ESTI focusses on:
• energy rating under different intensity, spectral and temperature conditions,
• long term exposure of PV modules, with periodic performance checks.