SunEdison, which was acquired in late 2009 by US wafer giant MEMC for $200m, is developing the project jointly with Banco Santander near the town of Rovigo.
When finished in the fourth quarter of 2010, it will become the second largest PV installation in the world, and the largest in Europe, catapulting past a 60MW project in Olmedilla, Spain.
In May 2010 Connecticut-based First Reserve established a joint venture with SunEdison with the intention of ploughing $1.5bn