Uniper and Wärtsilä to build 105 MW CHP plant in Germany

Wärtsilä 31SG generating set

Wärtsilä and Uniper have been contracted to deliver a 105 MW combined heat and power (CHP) gas engine plant to the city of Bremen, Germany.

The plant will be operated by Bremen’s public utility swb Erzeugung and will replace an existing coal-fired plant. It has a planned generating capacity of 105 MW and will also supply the district heating system with 93 MW of thermal output.

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It will run on nine Wärtsilä 31SG gas engines and the Finnish company will also deliver the complete technical equipment for the nine gensets, including the heat recovery system.

The engineering division at Uniper will serve as general contractor in overseeing all aspects of the project.

When operational in mid-2022, heat from the plant will be able to supply the city of Bremen’s district heating network and feed electricity into the grid in Germany.

David Bryson, Chief Operating Officer at Uniper, said the company was “very pleased to be able to assist swb in achieving its climate goals through this engineering project”.

“Engineering know-how is a critical factor in environmental protection, which too often comes up short in discussions.”

Wärtsilä said its 31SG genset was specifically designed for flexible power generation and “creates a balancing link between power generation and consumption, thus providing effective system level resilience”.

The plant will operate in winter on flexible CHP mode with district heating and the heat storage at the power plant, and in summer on peaking load with heat storage, mostly working on the volatile power markets for day ahead and intraday.

The contract comes with a Wärtsilä service agreement for three years, including all maintenance , performance guarantees and training of swb Erzeugung’s personnel.

“Efficient and sustainable power and heat generation is extremely important, both for our company and for the German energy sector in general. We are going to replace an outdated coal burning plant with a modern, clean, reliable and extremely efficient solution, which will provide the flexibility needed today,” said Jens-Uwe Freitag, chief Executive Officer of swb Erzeugung GmbH & Co. KG, Bremen.

Pekka Tolonen, Energy Business Director, Europe, Wärtsilä, said: “I am very satisfied that we have reached this milestone with our consortium partner Uniper, and also the customer has put their trust in our joint offering. This project marks the beginning of our joint endeavour to deliver very high-quality and future-proof solutions to the CHP market in Germany.”

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