Italy has few natural resources. There are no substantial deposits of iron, coal, or oil. Proven natural gas reserves, mainly in the Po Valley and offshore Adriatic, have grown in recent years and constitute the country's most important mineral resource. Most raw materials needed for manufacturing and more than 80% of the country's energy sources are imported. The energy sector is highly dependent on imports from abroad: in 2006 the country imported more than 86% of its total energy consumption (99.7% of the solid fuels demand, 92.5% of oil, 91.2% of natural gas and 15% of electricity).
However, in the last decade, Italy has became one of the world's largest producers of renewable energy, ranking as the world's fifth largest solar energy producer in 2009 and the sixth largest producer of wind power in 2008.
Italy has managed four nuclear reactors until the 1980s, but in 1987, after the Chernobyl disaster, a large majority of Italians passed a referendum opting for phasing out nuclear power. The government responded by closing existing nuclear power plants and stopping work on projects underway, completely putting a halt to the national nuclear program. Currently, the majority of Italian electricity is produced gas, oil, coal, and hydro. Italy also imports about 16% of its electricity need from France for 6.5 GWe, which makes it the world's biggest importer of electricity. Due to its reliance on expensive fossil fuels and imports, Italians pay approximately 45% more than the EU average for electricity.
In 2004, a new Energy Law brought the possibility of joint ventures with foreign companies to build nuclear power plants and import electricity. Public opinion on nuclear power was positive, as Italy's younger generations embraced nuclear energy. In 2005, Italy's power company, ENEL made an agreement with Electricite de France for 200 MWe from a nuclear reactor in France and potentially an additional 1,000 MWe from new construction. As part of the agreement, ENEL received a 12.5% stake in the project and direct involvement in design, construction, and operation of the plants. In another move, ENEL also bought 66% of the Slovak Electric utility that operates six nuclear reactors. As part of this agreement, ENEL will pay the Slovak government EUR 1.6 billion to complete a nuclear power plant in Mochovce, which has a gross output of 942 MWe. With these agreements, Italy has managed to access nuclear power without placing reactors on Italian territory.