Saving energy in Jena: This is how the energy house is revolutionizing our heating systems!

Saving energy in Jena: This is how the energy house is revolutionizing our heating systems!

A new, groundbreaking residential project is currently being implemented in Jena, which not only gives the apartments a modern touch, but also represents a big step towards sustainability. As MDR reports, there is extensive use of in-house energy sources. Waste heat from wastewater from dishwashers and showers is used to heat hot water - a clever move that significantly increases household efficiency.

Another highlight is the innovative cooling of cold water, which is kept constantly at 14 degrees. Not only does the drinking water stay cold, but energy consumption is also reduced. Tenants not only benefit from these technical achievements, but also from digital window handles that read the ventilation behavior and integrate it into the heating control. The heating system ensures an even, comfortable temperature, comparable to slower underfloor heating.

Networked energy solutions for the future

As part of the energy transition, particular attention is paid to the use of renewable energies. The aim is to avoid fossil fuels and reduce the housing company's carbon footprint. According to MDR, up to 40 percent of energy could be saved through digital solutions. Tenants could benefit from cheaper additional costs, even if electricity and district heating prices rise.

A notable aspect of the project is the photovoltaic panels installed on each balcony. These enable tenants to produce their own electricity and thus reduce consumption from the grid. These “balcony power plants” impressively show how simple measures can have a major impact on the energy balance. At the same time, a virtual power plant will be set up that coordinates the electricity supply from wind power, solar and biogas systems - a well-thought-out solution for the entire city.

Research meets practice

The entire project is part of the “JenErgieReal” research project, which runs until 2027 and is supported by federal funding. It serves as a real-world laboratory to combine research and practical application. Interested tenants, municipalities and housing associations can find out more and exchange information in a showroom in the city center next January.

But what about the environmental friendliness of heat pumps, which are a central component of heating systems? According to [Klimeo](https://www.klimeo.de/waermepumpe/wissen/energieverbrauch-und-nachhaltigkeit/co2-ausstoss-von-waermepumpen-wie-gesundheit-sind-sie- aktuell), they are considered a key technology for the heating transition. They use environmental energy from air, earth or water, but require electricity to make this energy usable. The mix of power supply and the efficiency of the heat pumps is crucial for the actual CO2 emissions and therefore for the environmental friendliness of the system. The project in Jena could therefore be a model for future housing concepts.

With this innovative and sustainable approach, the city of Jena shows that the energy transition is not just an empty promise, but is becoming concrete and tangible. The combination of technical innovation, practical application and research could restart the discussion about climate-friendly living and inspire many other cities.