Your questions, our answers

Various renewable energy technologies such as heat pumps, solar thermal energy, district heating, and geothermal energy are taken into account. The exact selection depends on local conditions and the availability of resources. An overview of possible heating technologies can be found here (opens in a new tab).

The municipal heating plan shows which climate-friendly heating supply options are available in Mainz. As a citizen, you are not directly obligated to do anything, but the plan provides guidance—for example, on heating networks, heat pumps, or funding opportunities. For property owners in particular, it can be a valuable basis for decisions on future investments.

You can actively seek information, participate in public events, and contribute suggestions or concerns. You can also check whether your own heating system is efficient and can already be converted to renewable energies.

In the Mainz-Lerchenberg area, connection to the heating network has been mandatory since 1984. Whether mandatory connection to an expanded or new heating network will be introduced in the future depends on various factors—for example, how economical and reliable a heating network would be in certain areas.

The city is examining various options for heat supply in its municipal heat planning. If a mandatory connection were to make sense in some areas, the city council would have to decide on it. Currently, there is no basis for a decision on this.

Yes, existing heating systems may generally continue to be used. However, there are requirements that must be observed when replacing or repairing them. These are regulated by the Building Energy Act (GEG). Information on this can be found, for example, at the Consumer Advice Center (opens in a new tab).

The city of Mainz offers consulting services in cooperation with the Rhineland-Palatinate Consumer Advice Center. Here you will find further links to energy consulting services. These will help you find the best solution for your building.

Yes, there are various federal and state subsidy programs that support the switch to renewable energies or energy-efficient heating systems. You can find the latest developments and information on subsidies at www.energiewechsel.de (opens in a new tab).

The state capital of Mainz will provide regular updates on the progress of its heating plan, e.g. through information events or this website. You can also contact waermeplanungstadt.mainzde directly.

Municipal heat planning builds on the results of Heat Master Plan 2.0. The results are expanded, detailed, and supplemented with input from local stakeholders (e.g., with a waste heat register). You can find detailed information about Heat Master Plan 2.0 on the Mainz public utility company website (opens in a new tab).