Despite the opposition to wind power of some regional governments, Italians in general are largely supportive of the technology. According to a survey commissioned by environmental group Greenpeace and Associazione Nazionale Energia del Vento (ANEV), the Italian wind energy association, 86% of Italians see great potential for wind power in their country. On a scale of one to five, the poll shows an acceptance rating for wind energy of 4.1, second among renewable sources only to photovoltaic energy, which obtained a 4.5 ranking. The survey was carried out by research group Customer Asset Improvement on behalf of Greenpeace and ANEV, which recently agreed to jointly develop initiatives in Italy for the promotion of wind energy. Some 800 Italians were surveyed, including 300 in Sardinia, which is the country's windiest region but has imposed strict limitations on the development of wind energy. Despite opposition from Sardinia's regional government, 59.5% of Sardinian residents responding to the survey said that development of wind energy would be positive for the region and should be accepted. While a further 30.5% of those asked saw no specific benefits to the region, they agreed that wind energy should be developed on the island.