All renewable energy forms originate as a definition from the solar radiation. Bioenergy, wind energy, geothermal heat, and all forms of hydropower owe their existence to the Sun.

Solar energy itself can be used to produce both warmth and electricity, and its use is fast becoming more common throughout the world. Finland is still in the early stages of using solar energy, but in our neighbouring Sweden, some of the biggest solar warmth plants in Europe can be found, and they use a variety of solar energy solutions in existing buildings. The Swedes are among the best also in heat pump technology that utilizes the geothermal energy stored in the ground and for example in sea water. The aim of Hammarby-Sjöstad in Stockholm is to produce all energy needed in the area from renewable sources.

The Danes are the pioneers in harnessing wind power. Several large offshore wind parks operate already on the Danish seas, and Britain has recently revealed a new wind power plant project which leaves the traditional windmills in its shadow.