Bavarian Utility Installs GE Gas Engine Cogeneration System
The German government is emphasizing greater industrial energy efficiency as part of its “Energiewende” energy transition plan, and in support of the effort, the Stadtwerke Rosenheim municipal cogeneration plant in the city of Rosenheim is increasing its combined heat and power (CHP) generation.
The utility is installing GE’s largest Jenbacher gas engine, the 9.5 MW J920 FleXtra.
Stadtwerke Rosenheim’s integrated CHP facility also features an existing waste incineration plant and four previously installed Jenbacher engines – three 3.35 MW J620 engines and a 4.4 MW two-stage turbocharged J624 unit. The upgraded cogeneration facility (36.1 MWel and 43.8 MWth) now meets about 40 percent of the electricity needs and 20 percent of the heating requirements of Rosenheim, which has more than 61,000 inhabitants.
Germany plans to shut down its remaining nuclear power plants by 2022. To replace the low-carbon baseload electricity from the nuclear plants, the government’s energy transition plan calls for increasing the use of natural gas and renewable energy as well as more energy efficiency technologies. Installing the J920 FleXtra helps Stadtwerke Rosenheim more closely align its cogeneration plant with Germany’s goal to increase CHP power generation to 25 percent of the country’s total power supply by 2020.
The natural gas-fired J920 CHP system provides electricity and thermal power (hot water) for local residents and industrial customers. Also, the J920 FleXtra engine’s extremely short start-up time increases Stadtwerke Rosenheim’s operational flexibility to overcome the challenges of intermittency associated with adding more renewable energy supplies. GE’s J920 FleXtra is designed to achieve an electrical efficiency of 48.7 percent and about 90 percent efficiency in cogeneration mode.
In January, China National Petroleum Corporation announced it was building a gas engine combined cooling and heating power plant for its new data center in the Beijing district of Changping, installing five of GE’s J620 Jenbacher cogeneration units to meet the industrial data center’s on-site cooling and heating requirements.
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