Solar energy in Finland is used primarily for water heating and by the use of to generate electricity. As a northern country, summer days are long and winter days are short. Above the , the sun does not rise some days in winter, and does not set some days in the summer. Due to the low sun angle, it is more common to place solar panels on the south side of buildi. .
Bioenergy, closely associated with Finland's forestry and forest industry, plays a significant role in the country's renewable energy portfolio. Wood-based fuels, derived from forest industry by-products such as , bark, sawdust, and industrial wood residues, along with biomass from operations, have constituted approximately one quarter of Finland's energy consumption in rec.
[pdf] Where temperatures below about 95 °C (200 °F) are sufficient, as for space heating, flat-plate collectors of the nonconcentrating type are generally used. Because of the relatively high heat losses through the glazing, flat plate collectors will not reach temperatures much above 200 °C (400 °F) even when the heat transfer fluid is stagnant. Such temperatures are too low for
[pdf] Energy production from renewable resources accounts for the vast majority of domestically produced electricity in Liechtenstein. Despite efforts to increase production, the limited space and infrastructure of the country prevents Liechtenstein from fully covering its domestic needs from renewables only. Liechtenstein has used hydroelectric power stations since the 1920s as its primary source of do.
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