Municipal heat planning

The existing supply structure is recorded and all buildings are mapped according to their types, their building structure and their heat consumption (for space heating, hot water and process heat). On this basis, the resulting greenhouse gas emissions are calculated in order to develop targeted measures to reduce emissions in the VG.

Data collection and recording: First of all, all relevant data on heat supply is collected, such as energy consumption, heating systems and infrastructure.

Data validation and supplementation: The recorded data is checked for accuracy and completeness and supplemented if necessary.

Preparation of a heat, energy and greenhouse gas balance according to BISKO: A comprehensive balance sheet is prepared to evaluate and analyze the municipality's energy consumption and CO2 emissions.

Cartographic representation in a GIS system: The data is digitally mapped in order to visualize the heat supply and infrastructure and enable targeted analysis.

In the VG Göllheim, all potentials for environmentally friendly heat generation and for reducing heat demand are being jointly analyzed. This includes examining how existing heat sources and unavoidable waste heat can be used efficiently in order to make the heat supply in the VG sustainable. There is potential in the area of electricity generation through photovoltaics and wind energy as well as in the heating sector through innovative solutions such as local and district heating networks or the use of heat pumps.

Energy-saving potential: Opportunities to reduce heat consumption through more efficient heating systems, better insulation and optimized operational management are identified.

Potential of renewable energies and waste heat: Possibilities for the use of renewable energies (such as solar thermal energy or heat pumps) and waste heat sources (e.g. industrial waste heat) are analyzed.

These steps help to reduce energy consumption and integrate sustainable energies.

Following on from the analysis of the existing situation and potential, transformation targets are defined together with the steering group and the steering committee of the VG Göllheim. These targets take into account the future development of heat demand and the planned supply structure and are intended to ensure that heat demand is covered sustainably. In this way, an environmentally friendly, efficient heat supply can be created for the coming years.

Transformation targets were defined based on the potential. These targets describe what the heat supply should look like in the VG in 2045. In the future heating landscape, a small number of buildings will be supplied centrally via a building network (approx. 5 %). The decentralized supply of the buildings in turn accounts for the majority of the heat supply. For the future scenario in 2045, the decentralized supply obtains heat from the following sources:

Air/ground source heat pumps: 59 %
Micro heat networks: 5 %
Green gases: 12 %
Direct electricity: 10 %
Solar thermal: 9 %
Biomass: 5 %

In addition, a refurbishment quota of 1.6 % was set to bring houses with a low energy efficiency class up to the level of energy efficiency classes A-D.

The final phase comprises the development of a strategic catalog of measures to achieve the goal of a climate-neutral heat supply. This is a long-term process of municipal heat planning in which all relevant local stakeholders are actively involved. The defined measures are continuously reviewed for their feasibility and effectiveness to ensure that we react flexibly to changes and find the best possible solutions for our local authority.

The following measures for implementing the heating plan have been identified and will be prioritized over the next five years, i.e. until the new heating plan is drawn up.

In the area of heating network measures, the construction of new micro-networks and the expansion of existing ones at suitable locations within the municipality are to be examined. The aim is to bundle and efficiently develop local heat requirements and integrate renewable heat sources as close to the building as possible. Tests are planned for the following network options:

Focus area 1: Göllheim school and sports center building network test area

Focus area 2: Göllheim Raiffeisenstraße-K80 building network test area

Focus area 3: Albisheim building network test area Untere Bahnhofstraße - Pfrimmhalle

In addition to these site-specific grid audits, community-wide steps are being considered to support the heating transition: the renovation of building envelopes to reduce heating requirements, the switch to alternative energy generation and the replacement of existing heating systems, as well as active citizen participation to strengthen acceptance and co-design.