Valle d’Aosta is the most efficient region in producing electricity from the sun, followed by Emilia-Romagna and Piedmont. According to research by Aceper (Association of Consumers and Producers of Renewable Energies), Valle d’Aosta is the most “virtuous” region, while Piedmont is the one that produces the most electricity from photovoltaics in Italy.

The study was conducted on a sample of 5,236 photovoltaic systems spread across 17 regions. A region is more or less virtuous depending on the ratio between actual photovoltaic production and expected photovoltaic production, where the expected production is estimated according to the official Pvgis (Photovoltaic Geographical Information System) measurement tool.

Aceper’s ranking sees Valle d’Aosta as the most virtuous region with 960,391 KWh (kilowatt-hours) actually produced and an expected production of 1,011,502 KWh, according to Pvgis measurement, with a ratio of actual production to expected production of 95%. Emilia-Romagna is second with 37,939,525 KWh produced and 43,840,630 KWh expected (ratio of 87%), followed by Piedmont, third with 139,917,414 KWh produced and 162,741,031 KWh expected (ratio of 86%), but clearly first in KWh produced from photovoltaics.

Then three regions with a ratio of 85%: Abruzzo, with 20,100,052 KWh produced and 23,625,127 KWh expected, Liguria, with 5,187,522 KWh produced and 6,108,499 KWh expected, and Lombardy, second in the ranking for photovoltaic production with 66,305,239 KWh produced and 78,089,977 KWh expected. Veneto follows, with 49,221,066 KWh produced and 58,691,563 KWh expected (ratio of 84%), the third Italian region for production. The Marche, with 20,328,123 KWh produced and 24,622,400 KWh expected (ratio of 83%) precede Tuscany, with 5,830,869 KWh produced and 7,263,032 KWh expected (ratio of 80%).

Molise, with 1,589,155 KWh produced and 2,000,284 KWh expected, and Apulia, with 18,459,422 KWh produced and 23,406,458 KWh expected, both have a ratio of 79%, while Umbria, with 21,396,944 KWh produced and 27,506,185 KWh expected, has a ratio of 78%. Then follows Sicily (2,325,953 KWh produced, 3,144,591 KWh expected and a ratio of 74%), Lazio (16,105,440 KWh produced, 22,635,310 KWh expected and a ratio of 71%), Campania (13,893,494 KWh produced, 19,822,080 KWh expected and a ratio of 70%), Sardinia (49,792 KWh produced, 71,369 KWh expected and a ratio of 70%) and Basilicata, which closes the ranking with 4,171,443 KWh produced, 6,836,095 KWh expected and a ratio of 61%.