euros or 101% of the EU27 average in the same year. The GDP per employee was 95% of the EU average. The GDP per capita was the lowest of all states in West Germany. In 2017, Schleswig-Holstein had an export surplus for the first time since 1989: export 22.6 billion euros/ import 20.8 billion euros. Energy Schleswig-Holstein is a leader in the country's growing renewable energy industry. In 2014, Schleswig-Holstein became the first German state to cover 100% of its electric power demand with renewable energy sources (chiefly wind 70%, solar 3.8%, and biomass 8.3%). The largest German oil field Mittelplate is located in the North Sea off the Dithmarsch coast and connected with refinery in Hemmingstedt and chemical plants in Brunsbüttel via pipeline. It produce ca. 1.4 million tonnes of oil annually. Nuclear power There were three nuclear power plants in Schleswig-Holstein: Krümmel, Brunsbüttel and Brockdorf. The last operating plant in Schleswig-Holstein, the Brokdorf-plant was shut down on new-years eve 2021. There is also a nuclear research center known Helmholtz-Zentrum Geesthacht (rebranded as Hereon) with 2 research reactors, located right next to the Krümmel plant. During the 1990s, ten more cases of leukemia among children than was expected were identified in Elbmarsch, near the Krümmel plant. Anti-nuclear activists believed it was due to the nuclear plant, which led to several investigations. The reported discovery of small spherical beads of nuclear material in the area led to further concern, as well as the presence of minute amounts of plutonium in the Elbe. The origins of the nuclear material were disputed, with one report determining them to not be that of the Krümmel plant. Another report claimed that they may have come from an undisclosed fire in 1986, however this theory has been questioned as it would have required a substantial government coverup. The Chernobyl disaster has also been suggested as a source, though is considered unlikely. The probable source of the material, especially in the Elbe, is nuclear reprocessing plants in France. A 2010 report exonerated the nuclear power plants on the Elbe as the cause of contamination. Further doubt was cast on the nature of the supposed beads of nuclear material, with a Federal commission chastising the original commission that claimed to have discovered the beads. The exact cause of the increased leukemia cases remains unknown, and could be due to other environmental factors, or even by chance. The