Finland has raised the energy taxes to encourage more energy saving and better energy efficiency.
Source: Finnish Environmental Administration

The Finnish authorities make widespread use of various economic instruments in order to regulate energy consumption in Finland. However, the general structure of energy taxation in Finland has remained unchanged since 1997. The present energy tax system consists of taxes on traffic fuels and heating fuels, and on electricity. The general structure of energy taxation in Finland was changed as of 1 January 2011 for the first time after the tax reform in 1997. Taxation of liquid fuels and coal again takes account of both the energy content and carbon dioxide emissions and, in a more refined way, emissions into the local environment that have adverse health effects.