Siemens to build turnkey combined cycle power plant in Germany


July 02, 2018 – Siemens has signed an agreement with STEAG GuD Herne on the turnkey construction of Herne 6 600MW combined cycle power plant with district heat extraction.

Steam will also be extracted and the thermal energy will be used for the district heating grid of Germany’s Rhine-Ruhr metropolitan region.

This will be the first single power plant unit to provide 400MW of (thermal) district heat with combined cycle operation.

The overall fuel efficiency of the natural gas used will be more than 85%, making Herne 6 one of the most efficient and most environmentally friendly plants in the world. Investment in Herne 6 is expected to be in the mid-triple-digit euro range.

Siemens, as general contractor, will build the power plant on the site of an existing plant owned by STEAG in the North Rhine-Westphalian town of Herne.

Critical components for the plant will be manufactured in Germany – the steam turbine and generator in Mülheim and the H-class gas turbine at the factory in Berlin.

The new gas-fired CHP plant will begin operations in 2022 and is expected to generate electricity for the Rhine-Ruhr region with district heat at the same time.

Siemens and STEAG have also entered into a long-term service agreement.


Siemens power and gas division CEO Willi Meixner said: “We’re very pleased that we were able to land this project in a difficult market environment. This success also shows that our strategy of developing projects in close collaboration with our customers is working.

“Environmentally friendly, gas-fired CHP plants such as Herne 6 can play an important role in further implementing the transition to a new energy mix in Germany. Therefore for further projects already being planned it is enormously important to provide the legal security needed.”

STEAG management board chairman Joachim Rumstadt said: “We are convinced that Siemens is the right partner for this important and pioneering project. As we know from our successful collaboration in earlier projects, Siemens has excellent expertise in the area of power plant construction.”



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