At its most recent meeting, the Wielenbach municipal council had the energy use plan drawn up by the “Energiewende Oberland” (EWO) presented.
The energy turnaround has been achieved for electricity, things are looking bad so far for heating, and traffic has been completely excluded from the study.
Wielenbach
- Andreas Scharli and Christiane Regauer from EWO presented the work, in which the inventory is documented and development opportunities are described. In Wielenbach, the eight million kilowatt hours of electricity that is consumed can already be generated from renewable sources. A biogas plant with an attached power plant, large photovoltaic open space systems and the many small PV systems on roofs all contribute to this.
However, electricity consumption will increase if more cars are powered by electricity and more heating systems are built with heat pumps.
According to Scharli, this is not a problem because on the one hand there is great potential for savings and on the other hand PV power generation can still be expanded.
Savings could be made, for example, by installing a new heating system in the fire station in Haunshofen, which is currently heated electrically, by using modern pumps in the drinking water supply and by switching off superfluous circulation pumps for hot water.
Decentralized heating of the water on site and only when necessary is more sensible.
85 percent of the roof areas suitable for solar power are not used
In addition, according to Regauer, only around 15 percent of the roof areas that are suitable for generating solar power are actually used for this. The remaining potential of 85 percent only needs to be used. Open-space systems could be built along the railway lines and on conversion areas such as the former geothermal drilling site. PV systems could also be built around drinking water wells to supply the pumps with electricity.
According to Scharli, solar power is not only environmentally friendly, it also makes economic sense.
Investments in such systems would pay for themselves in less than ten years and then lead to significant savings due to their longer useful life.
It doesn't look as good in terms of heat as it does in terms of electricity.
According to the study, 44 percent of the energy in Wielenbach is used to generate heat.
60 percent of this comes from heating oil and 20 percent from natural gas.
Improvements could be achieved through the use of waste heat from the biogas power plant and the use of heat pumps.
It is also possible to switch the heating in the school to wood pellets.
Recommendation for ground-based heat pumps
According to Mayor Harald Mansi, the heating will probably have to be replaced next year.
A changeover is definitely possible.
For the more distant future, Scharli considers the construction of area networks for electricity, the production of hydrogen and the liquefaction of biogas to be possible.
Hydrogen and liquid biogas could also serve the transport sector, which also requires 44 percent of the energy.
Hermann Gerold wanted to know: "Which heating do you recommend?"
A problem with the energy turnaround is often property developers, because they are often not interested in the follow-up costs that citizens will have to face.
BY ALFRED SCHUBERT
