French state-owned Électricité de France SA (EDF) had $75.8bn market capitalisation and $353.9bn of assets as of May 2014. The company, which is engaged in power generation, transmission, distribution as well as energy supply and trading businesses both inside and outside France, recorded sales of $100.4bn and a profit of $4.5bn in 2013.
Founded in April 1946, EDF currently employs 154,941 people and is headquartered in Paris. Gross installed capacity of the company by the end of 2013 stood at 140.4GW, which included 53% from nuclear power. It generated 653.9TWh of electricity for 39.1 million customers during the year. EDF owns and operates three of the world's top ten nuclear power plants by capacity. Its wholly-owned subsidiary EDF Energy is the biggest producer of low-carbon electricity in the UK.
Italy-based power company Enel had $53.2bn of market value and $226.2bn of assets as of May 2014. The company operates in 32 countries and employs 71,394 employees, operating power generation, transmission as well as upstream gas businesses. Its revenue and profit during 2013 stood at $106.3bn and $4.3bn respectively.
Enel was founded in 1962 and is headquartered in Rome. It had 95GW of net installed capacity and 1.9 million km's of electricity and gas distribution network to serve approximately 61 million customers, as of June 2014. Its subsidiary Enel Green Power owns Larderello Geothermal Complex, the second biggest geothermal power station in the world.
E.ON's market capitalisation as of May 2014 stood at $37.2bn, while its power and fossil production assets spread over Germany, UK, Sweden, Russia, the US, Italy, Spain, France, Belgium, the Netherlands and Luxembourg were valued at $180.1bn. Sales and net operating profit in 2013 stood at $162.6bn and $2.8bn respectively.
E.ON, headquartered in Düsseldorf, Germany, was founded in June 2000 and currently employs 62,239 people. The company owned generation capacity of about 61 GW by the end of 2013. Its subsidiary E.ON Russia owns and operates the world's biggest gas-fired power station Surgutskaya GRES-2 in the Russian city of Surgut.
Iberdrola, a Spain-based holding company engaged in electricity generation, distribution, trading, and marketing businesses in Spain, UK, the US and Brazil, was estimated to have $44.1bn of market value and $127.3bn of assets as of May 2014. The company's net sales and profit during 2013 stood at $43.6bn and $3.4bn respectively.
Iberdrola currently employs 30,678 people and is headquartered in Bilbao, Spain. Its net installed capacity by the end of 2013 was over 45GW.
Duke Energy, USA
US- based Duke Energy's market capitalisation reached $49.9bn as of May 2014 and its assets value was estimated at $114.8bn. The company, engaged in electricity and gas generation, transmission and distribution, recorded $24.6bn of sales and $1.7bn of profit during 2013.
Duke Energy was founded in April 2006 with headquarters in Charlotte, North Carolina, and employs 27,948 people in the US. The company's total generating capacity in the US reached 57.5GW by the end of 2013.
Exelon, a utility services holding company operating in the US through major subsidiaries including Exelon Generation, Commonwealth and PECO Energy, was estimated to hold $28.7bn of market value and $79.9bn of assets as of May 2014. The company's net sales and profit for 2013 stood at $24.6bn and $1.7bn respectively.
Founded in February 1999, Exelon is headquartered in Chicago, Illinois and has 25,829 employees. The company's total generating capacity is estimated to be more than 34.6GW and is mostly concentrated in the Midwest, Mid-Atlantic and Texas regions of the US. About 55% of Exelon's generating capacity is nuclear, which makes it the biggest owner and operator of nuclear plants in the US.
Southern Company, USA
Southern Company, an electricity producer and distributor operating through subsidiaries including Alabama Power, Georgia Power, Gulf Power and Mississippi Power, had a market value of $38.6bn and assets worth of $64.5bn as of May 2014. The company's sales and profit in 2013 stood at $17.1bn and $1.7bn respectively.
Southern Company was founded in November 1945 and is headquartered in Atlanta, Georgia. The company employs 26,300 people and had 45.5GW of generating capacity by the end of 2013. Approximately 42% of its generation capacity was natural gas-based, while coal, nuclear and hydropower comprise 38%, 16%, and 4% respectively.
NextEra Energy, USA
NextEra Energy is a US-based investment holding company involved in power generation, transmission and distribution in the US and Canada. Through its two major subsidiaries Florida Power & Light and NextEra Energy Resources, the company had a market value of $40.9bn and assets worth $69.3bn as of May 2014. The company's net sales and profit during 2013 stood at $14.6bn and $1.7bn respectively.
NextEra Energy was founded in 1984 and is headquartered in Juno Beach, Florida. The company employs 13,900 people and owned 42.5GW of generating capacity in 2013. It owns three of the ten biggest power stations in the US.
Dominion Resources, USA
Dominion Resources, which is engaged in electricity and natural gas business in the Eastern US through three subsidiaries namely Dominion Virginia Power (DVP), Dominion Generation and Dominion Energy, had $40.9bn of market cap and $50.1bn worth assets as of May 2014. The company's sales and profit for 2013 stood at $13.2bn and $1.7bn respectively.
Dominion Resources was founded in 1983 and is headquartered in Richmond, Virginia. It currently employs 14,500 people and had a generating capacity of 23.6GW by the end of 2013.
Scottish & Southern Energy (SSE), a utility engaged in electricity generation, transmission, distribution and supply of electricity as well as in gas production, storage distribution and supply, had a market value of $24.1bn and assets worth $31.1bn as of May 2014. The company's sales and net profit for the year 2013 stood at $47.5bn and $1.2bn respectively.
The company, which was founded in December 1998 and is headquartered in Perth, UK, employs 19,795 people. SSE owns over 13GW of generation capacity, 106,000 substations and 130,000km of transmission lines in the UK and Ireland. It supplies electricity and gas to more than 10 million customers under SSE, Scottish Hydro, Southern Electric, SWALEC and Atlantic brands in the UK and under SSE Airtricity brand in Ireland.