New paths towards energetic optimisation
As part of this project, EEW is also investing in innovative technologies aimed at setting new standards in energy efficiency. According to current plans, this includes the integration of an absorption heat pump. Unlike conventional systems, this pump uses steam—not electricity—as its energy source for thermal compression. The heat output will be extracted from the turbine’s exhaust steam, which has so far been released into the atmosphere via air condensers. This specific use of absorption heat pumps is currently unique in Europe.
Tapping previously lost energy potential
Further opportunities exist to boost energy efficiency. Technical upgrades—such as improvements in flue gas cleaning and the implementation of battery storage solutions—are expected to enhance the plants’ overall performance. Additionally, the process of flue gas condensation not only captures pollutants but also recovers water and energy that would otherwise be lost.
In the first stage of the process, the flue gas is cooled using water from about 135°C to around 40°C, releasing heat in the process. The resulting condensate collects at the base of the stack and is then further cooled to approximately 27°C as it exits the chimney. This recovered thermal energy is fed into the district heating system—reducing pollutant emissions while simultaneously improving energy efficiency.
Moreover, battery-based storage systems will help stabilise the electricity grid, while thermal reservoirs will store hot water to ensure supply during peak demand periods. In this way, EEW is also supporting the integration of renewable energy sources such as wind and solar into the regional energy mix.