[24][25] At the beginning of 1962, the Fanfani IV Cabinet committed the government to put together a proposal for the unification of the national electricity system within three months of the parliament passing a confidence motion.

[26][27] During the Chamber of Deputies assembly of 26 June 1962, the government presented a bill that sanctioned the principles and procedures for the establishment of the Ente Nazionale per l'energia Elettrica (E.N.EL).

[28][29] Procedures to assess the value of the acquired companies were defined, and it was established that compensation was to be paid to creditors in 10 years at an interest rate of 5.5%.

[31] The first companies to be acquired were:[32] SIP (Piedmont),[33] Edison Volta (Lombardy),[34] SADE (Veneto),[35][36] SELT-Valdarno (Tuscany), SRE (Lazio), SME (Campania), SGES (Sicily), and Carbosarda (Sardinia).

[41][42] In 1963, the National Dispatch Centre of Rome was created to manage the energy network by coordinating the production plants, the transmission network, the distribution, as well as the interconnection of the Italian electricity system with that of foreign countries by adjusting in real time the production and transmission of energy on the basis of actual demand.

[44] In 1968, the construction of the 380 kV high-voltage connection between Florence and Rome began, with the aim of joining the high voltage electrical system of the north with that of the centre and the south.

[47][48] In the same year, undersea electrical cables were put in place to connect the peninsula and the islands of Elba (1966),[49] Ischia (1967),[49][50] and Sardinia through Corsica (1967).

The dam and power plant had been built by the Società Adriatica di Elettricità (the Adriatic Electricity Company, or SADE) and then sold to Edison, and it had just been transferred as part of the nationalisation process to the newly established Enel.

The landslide created huge waves in the Vajont reservoir, which partially flooded the villages of Erto e Casso and swept over the dam, completely wiping out the towns in the valley below it: Longarone, Pirago, Rivalta, Villanova, and Faè.

[65] The dam of Alto Gesso (Piedmont) was completed in 1982 as part of the hydroelectric power station Luigi Einaudi "Entracque".

[66][67] The 1980s were characterised by the construction of new plants and the testing of alternative forms of energy, the Italian nuclear power phase-out, as well as a gradual reduction of reliance on oil, which decreased from 75.3% in 1973 to 58.5% in 1985.

[90] In 1997, Enel, France Télécom, and Deutsche Telekom funded Wind as a joint venture, a mobile and fixed telecom operator.

[92][93] During the 2000s, the company worked to reduce the environmental impact of the production of energy and on a progressive internationalization of Enel through a number of mergers and acquisitions.

The project - called "Diamante" – was to build a plant capable of storing, as hydrogen, enough of the solar energy accumulated during the day to meet night-time requirements.

[clarification needed][106][107] In 2005, Enel assigned 62.75% ownership of Wind to Weather Investments, a company belonging to the Egyptian businessman Naguib Sawiris, at the time CEO of Orascom Telecom Holding (the remaining 37.25% was divested in 2006).

The cost of the project was €8 million, which included the production and distribution of high-efficiency cooking stoves, the installation of photovoltaic systems in the all WFP logistical premises, and giving support to humanitarian interventions.

[112][113][114] In the same year, the company was added to the FTSE4Good Index of the London Stock Exchange which measures businesses' behaviour in terms of environmental sustainability, relationships with stakeholders, human rights, the quality of working conditions, and fighting against corruption.

[117] In 2013, Enel signed an agreement, in Sochi, for the sale of 40% of Arctic Russia, a joint venture with Eni, which in turn controlled 49% of SeverEnergia, for $1.8 billion.

[121][122] In 2014, Enel—together with Endesa, Accelerace, and FundingBox—initiated the INCENSe program (Internet Cleantech Enablers Spark), which was co-funded by the European Commission, for the promotion of technological innovation in renewable energy, and was joined by over 250 start-ups from 30 countries in 2015.

In July 2016, Enel launched an Innovation Hub in Tel Aviv to scout 20 start-ups and foster collaboration, while offering a personalized support programme.

In March 2017, Enel inaugurated the Innovation Hub at University of California, Berkeley, an initiative for start-up scouting and collaboration development.

[137][138] In April 2017, in joint venture with Dutch Infrastructure Fund, the company launched the largest “ready-to-build” solar PV project in Australia.

[142] In the same month, Enel and ENAP inaugurated Cerro Pabellón, the first geothermal power plant in South America and the first in the world to be built at 4,500 meters above sea level.

[147] In November 2017, Enel presented E-Mobility Revolution, a plan which seeks to install 7000 recharging stations for electric vehicles by 2020.

[156] In February 2018, Enel became title sponsor of the FIM MotoE World Cup, as well as Sustainable Power Partner of the MotoGP.

It is the new business line of the Group and aims to accelerate the development of electric mobility and combine decarbonization, digitalization and electrification.

[171] The suit says that Osage Wind should have obtained a permit from the Bureau of Indian Affairs before mining rock and other material for the pits in which turbine bases are built.

[178] Article 109 of the Constitution of El Salvador states that underground natural resources are the country's property and the government should not allow a foreign company to be the sole proprietor of geothermic generation.

Enel had been demanding over €94 million from the Ministry of Economy of Slovakia in compensation for lost earnings it claims to have incurred as price proposals were rejected by the Slovakian Regulatory Office for Network Industries (URSO).

[206][207] In 2013, Rosneft, through NGK Itera, bought 40% of Enel's stake in Arctic Russia BV, a company which owned 19.6% of SeverEnergia.