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Utilities witnessing the high-voltage tests on site Image courtesy of GE: a 145 kV Gas-Insulated Substation (GIS) in Germany
Etzel g3 substation near Zurich Image courtesy of GE: example of a GE 145 kV GIS bay

GE and SEAR Strengthen the Energy Supply of the Elbe Metropolis in Hamburg, Germany

The distribution network operator Stromnetz Hamburg GmbH recently commissioned a consortium with GE and SEAR to modernize three substations in Hamburg.

GE Grid GmbH, a GE Power business specializing in electrical engineering and energy distribution, and SEAR GmbH, a Rostock-based company specializing in energy and industrial technology, are working as a consortium to modernize the substations in Bahrenfeld, Barmbek and Harburg in the north German Elbe metropolis Hamburg. This project also known as BaBaHa is expected to be completed by December 2023.

"With the modernization of the substations in Hamburg, we are making an important contribution to the efficient energy supply of this business center," said Thorsten Schwarz, executive at GE Power’s Grid Solutions business. "We offer our customers a technically proven and cost-efficient solution that we implement together with our partner SEAR on time.

"With this important order, we can consolidate our position as one of the leading German providers of highly complex electrotechnical assemblies in the field of power distribution,” emphasized the managing partners of SEAR GmbH, Thomas Lambusch and Mayk Wiese. In addition, SEAR is currently realizing about 30 additional substations in Europe.

Thomas Volk, technical managing director Stromnetz Hamburg GmbH adds: "Our convoy project "BaBaHa" also opens up a new dimension of project realization for us. Three substations will be completely modernized within six years. Thus, the overall allocation, in addition to a very positive economic effect, ensures that we bring our systems up to date technically. By assigning to the consortium of GE Grid and SEAR, we have professional partners at our side, which implement our requirements even in the tight schedule."

GE Grid GmbH is responsible for the electrical and structural planning and execution, as well as the supply and commissioning of the gas-insulated switchgear and commissioning of the transformers. SEAR GmbH is responsible for the assembly of all electrical components as well as the work on the 110 kV and 10 kV cables.