Midsummer Sweden, Denmark, Norway, Finland, Estonia, Latvia and Lithuania – but is also very strongly observed in Poland, Russia, Belarus, Germany, Netherlands, Flanders, Ireland, parts of the United Kingdom (Cornwall especially), France, Italy, Malta, Portugal, Spain, Ukraine, other parts of Europe, and elsewhere – such as Canada, the United States, Puerto Rico, and also in the Southern Hemisphere (mostly in Brazil, Argentina and Australia). In Estonia, Latvia, Lithuania and Quebec (Canada), the traditional Midsummer day, June 24, is a public holiday. So it was formerly also in Sweden and Finland, but in these countries it was, in the 1950s, moved to
Oil shale in Estonia increasing the use of other energy sources such as renewable energy and natural gas. In 2016, 73% of oil shale mined in Estonia was used for power generation, and about 90% of Estonia's electricity was generated from oil shale. About 15% of produced electricity was exported to Finland and Latvia. Eesti Energia owns the largest oil shale-fuelled power stations (Narva Power Stations) in the world. In addition, a new 300 MW station, which will use circulating fluidised bed boiler technology, is under construction in Auvere. In 2010, 11.4% of the heat supply in Estonia was generated by direct combustion of