'Hinter der Lieth' (Behind the Lieth in German) is a new residential quarter in the north of Hamburg. Energienetz Hamburg and the green energy provider Naturstrom have equipped this new residential quarter with a decentralized energy concept. This is based exclusively on the use of renewable energies. A biogas-powered combined heat and power unit (CHP) with a thermal output of 47 kilowatts supplies the 78 residential units with heat. The energy generated by the CHP is distributed via the district's own heating network. For particularly cold days, a peak load boiler is installed, which is also operated with biogas. This enables the project participants to provide room heating and hot water in a completely climate-neutral manner.
Solar power for the tenants
In addition, the cogeneration plant with an electrical output of 20 kilowatts generates electricity that is used on site. In addition, there are photovoltaic systems installed on the roofs of three of the six residential buildings in the quarter. Together they achieve a capacity of 120 kilowatts and supply 48,000 kilowatt hours of clean solar power every year. Together with the electrical energy from the CHP, Naturstrom offers this electrical energy to the households as tenant electricity. The resonance is great. According to the project partners, 80 percent of the apartments occupied to date already use this offer.
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With this project, Energienetz Hamburg and Naturstrom want to show that there are many local resources and potentials for decentralized and above all clean power and heat supply with renewable energies, especially in urban areas. "Until now, the energy turnaround has mainly been a rural restructuring of our power supply," explains Tim Meyer, CEO of Naturstrom. "In order to further advance climate protection, we must also use renewable energies in the cities and definitely focus more on the heating sector," he emphasizes. "The 'Hinter der Lieth' project shows once again how modern life can function with a clean and sector-linked energy supply.
Energy transition is climate-friendly and decentralized
After all, the energy turnaround is not limited to replacing fossil fuels with renewable energy. It also includes the transition from the centralized structure of energy supply to a decentralized system. "Many people in Hamburg want to drive forward the energy turnaround - not just anywhere, but here in the city," says Matthias Ederhofer, founding director of Energienetz Hamburg. "The 'Hinter der Lieth' quarter shows that this not only works technically, but can also be implemented close to the citizens". (su/mfo)
