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Siemens Energy Builds Second Combined Cycle Power Plant For Evonik

July 7, 2020
Evonik replaces old backup gas power plant.

Model showing the new combined cycle power plant that Siemens Energy is building at the Marl Chemical Park.

Siemens Energy is building another combined cycle power plant for specialty chemical company Evonik at its largest industrial location in Marl, North Rhine-Westphalia, Germany, according to the company. Consisting of one SGT-800 gas turbine, one SST-400 steam turbine and two generators, the plant will reportedly produce power and heat with 90 megawatts of electrical capacity and 220 megawatts of thermal capacity. It will go into operation in 2022, replacing a backup gas power plant. Siemens Energy is also supplying the SPPA-T3000 control system for controlling the plant. A long-term service agreement between Siemens Energy and Evonik will reportedly ensure the availability of the power plant and its components.

“Evonik produces sustainable and efficiency-increasing products. That is how we make a significant contribution to reducing CO2 emissions. Overhauling and retrofitting our energy infrastructure represents another way in which we are helping lower the amount of CO2 emissions,” says Rainer Fretzen, chair of the management board of Evonik Technology & Infrastructure.

The construction of the new combined cycle power plant is the second combined heat and power (CHP) project implemented this year at the Marl Chemical Park, which is Evonik’s largest site worldwide. The cornerstone for building the turnkey combined cycle power plant, known as Marl VI, was laid March 2020. With Marl VII, Siemens Energy and Evonik continue their partnership. Once completed, Marl VI and Marl VII can generate electricity with an overall efficiency of more than 93% and a capacity up to 270 megawatts, reportedly equal to the demand of approximately 750,000 households. Combined with the steam generators from the Duisburg-based Standardkessel Baumgarte GmbH, the plant can generate up to 660 metric tons of process-steam per hour for the chemical park starting in 2022. It will continue to supply around 2,000 homes in Marl with district heat.

The power plant’s flexible load control system will make it possible to balance out fluctuations in the grid and even operate autonomously as an island solution in the event of a blackout on the site.

For more information, visit: www.siemens.com/energy

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