At the end of 2020, Stadtwerke Konstanz was able to build six new photovoltaic plants. The plants use roofs of municipal properties such as the Art Depot, the Humboldt Sports Hall or a housing estate Pfeiferhölzle (see photo) and thus use the scarce urban space for the production of solar power in the sunny south. The 300 megawatt hours of power generated by the plants can supply around 100 households with electricity each year, saving around 180 tons of greenhouse gas emissions.
Of the €440,000 total investment, about one-third was financed directly from the Grüner Strom-Label subsidy pot. With Green Electricity-certified tariffs such as "SeeEnergie ÖkostromPlus," a fixed amount per kilowatt hour is invested in the expansion of renewable energies. This is independently audited every two years. A further €290,000 was mobilized from the company's own funds. With the help of the Grüner Strom-Label, energy providers can invest in the ecologically sustainable local energy turnaround, which will make the supply of renewable energy even more widespread and affordable in the future.
In addition to the new PV systems, the green electricity tariffs made it possible to subsidize other support programs, such as charging stations for electric vehicles or support for the purchase of e-bikes. Support for the purchase of energy-saving refrigerators for low-income households, which is being implemented together with Caritasverband Konstanz e.V., makes a particular contribution to a socially just energy transition.
In total, the investments made in PV and other projects in 2020 amount to € 440,000. Stadtwerke Konstanz had already invested €660,000 in 2018, with around one-third of the funds flowing directly from the Green Electricity Label funding pot.