Vattenfall (then called
Kungliga Vattenfallsstyrelsen or Royal Waterfall Board) was founded in 1909 as a state-owned enterprise in Sweden. From its founding until the mid-1970s, Vattenfall's business was largely restricted to
Sweden, with a focus on
hydroelectric power generation. Only in 1974 did the company begin to build nuclear reactors in Sweden (the
Ringhals 1 and 2 reactors), eventually owning seven of Sweden's 12 reactors. In 1992, Vattenfall was reformed as the
joint-stock company Vattenfall AB. At the same time, the transmission grid (220 kV and 400 kV lines) was transferred to the newly formed state agency
Svenska kraftnät, which also became responsible for the operation of the national power system. In the years 1990 through 2009, Vattenfall expanded considerably (especially into Germany, Poland and the Netherlands), acquiring stakes in Hämeen Sähkö (1996), HEW (1999, 25.1% stake from the city of
Hamburg), the Polish heat production company EW (2000, 55% stake), the Danish Elsam A/S (2005, 35.3% stake), and
Nuon (2009, 49% stake, today 100%). In 2002, Vattenfall AB and its acquisitions were incorporated as Vattenfall Europe AG, making it the third-largest electricity producer in
Germany. A major part of these write-offs were attributed to Nuon Energy NV, a Netherlands-based utility that Vattenfall purchased at an 89 billion SEK (ca. US$15 billion) price in 2009, but whose values were depreciating by 15 billion SEK (ca. US$2 billion) since. The gloomy market outlook of decreasing power prices in combination with increasing risks notably on the continental market prompted the board to revise the group strategy by splitting its organizational structure into a Nordic part and a part with operations in continental Europe and the
United Kingdom as of 2014. Some analysts have perceived this strategic review as a precursor to a partial retreat from continental European activities with a shift of focus towards activities in the Scandinavian market. In this context and in response to a local referendum on re-municipilization of distribution grids, Vattenfall agreed on the sale of company-owned electricity and district-heat grids in Hamburg to the City of Hamburg in early 2014. In each of the second quarters of 2015 and 2016, Vattenfall filed
impairments of SEK 28 billion, mostly due to lignite power stations in Germany. Operational financials were satisfactory. In 2020, Vattenfall reported a profit of SEK 7,716 billion with an operating profit (EBIT) of SEK 15,276 billion. Outside of Sweden, Vattenfall is known for forcing the
Soviet government to publicly reveal the
Chernobyl disaster. The Kremlin had tried to cover up the accident for a day, but elevated radiation levels at Vattenfall's
Forsmark Nuclear Power Plant forced the Kremlin to admit the accident had occurred. In October 2020, it was announced that Gunnar Groebler, senior vice president at Vattenfall responsible for the company's wind power operations, would leave the organisation to join
Salzgitter AG. Magnus Hall, President and CEO from October 2014, decided to leave the company in July 2020 and was succeeded by Anna Borg on 1 November 2020. were abandoned in autumn 2012. They are being converted into flats since. , north of Stockholm, in autumn 2012 ==Expansion beyond Sweden==