MAN Powering CHP Plant

Five 20V35/44G TS engines chosen

MAN Energy Solutions and general contractor MMEC Mannesmann GMBH will develop a combined heat and power (CHP) gas engine power plant in Jena, Germany.

The client is TEAG Thüringer Energie AG (TEAG), which is expanding an existing gas and combined cycle power plant at the same location. The new plant is expected to start operating in the 2021-22 heating period and is expected to significantly reduce emissions at the site.

The project calls for five 12.6 MW MAN 20V35/44G TS gas engines and a total capacity of approximately 63 MW. Thanks to two-stage turbocharging, the generator sets are also particularly efficient, the company said. The flexibility of the power plant is further increased through heat storage with a capacity of around 600 MWh.

The expansion to the power plant is part of a comprehensive modernization project with the objective of reducing the CO2 emissions of the Jena cogeneration plant. TEAG is investing approximately €80 million in the district heating site for this.

“The signed contract is also a climate protection pact since the expansion to the power plant reduces emissions of the greenhouse gas CO2 by almost half when compared with the current status,” said TEAG board spokesman Stefan Reindl.

“We are very happy with the trust that our customer TEAG has shown in us and about the fact that, with this CHP project, we are setting a new standard in the German market,” said Hajo Hoops, senior manager in the Power Plants division at MAN Energy Solutions. “In Jena, we are not only installing the largest gas engines in Germany, but we are also achieving degrees of utilization beyond 90% while, at the same time, achieving a power-to-heat ratio greater than one. This translates into high efficiency both during heat extraction and also during electricity production.”

MAN Energy Solutions is a leading provider of gas-engine power plants for combined heat and power in Germany. In February, the company commissioned a 30 MW power plant at the Stuttgart Gaisburg site for EnBW; in May, currently being commissioned is also a plant for Stadtwerke Schwäbisch Hall, which also uses a 35/44G TS engine. A 51 MW CHP plant for Frankfurt (Oder) municipal utilities is expected to be commissioned in the 2021/22 heating period.

“Gas engines have some very important advantages regarding the challenges we are facing in the light of the green energy transition,” says Hoops. “For example, exceptional flexibility for starts and stops, which helps to complement the fluctuating power generation from renewable energies. Our machines achieve full power in three minutes and can be switched on and off as required. This allows our customers to operate in a way that is operation- and market-oriented as well as extremely flexible. Combined with a heat storage, as is the case here in Jena, operators can respond to pricing signals on the electricity market with the power plant while guaranteeing a safe and highly efficient supply of heat at all times.”

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