There are various ways to use renewable energy to heat a building and provide hot water. Here are a few examples:
- Solar thermal energy: This is usually installed on the roof of a building and converts sunlight into heat. The system can cover part of the heat needed for hot water, e.g. for the shower, and possibly also some of the space heating.
- Biomass: Examples include wood pellet or log boilers generating heat for heating and hot water.
- Heat pump: A heat pump uses heat from the air, groundwater or the ground.
However, not all the ways to use renewable energy to provide heating are equally efficient. For this reason, the MAP only assists certain particularly efficient options (for more information, see "How much assistance is available for privately used installations?" or "How much assistance is available for commercially used installations?").