Under the contract, Alstom will deliver substations of type F35, which feature a compact double busbar design.
Each substation will house more than 15 switchgear panels and the type F35 design enhances reliability, and secures the steady power supply required to operate the power plants.
The company expects to deliver, install and commission the substations by the end of 2014.
The German Renewable Energy Act, Erneuerbare Energien Gesetz, charges a fee for operators who consume energy from the local electricity supply to operate the plants.
Alstom said this capacity to self-generate energy reduces the requirement for local electricity supply, and provides significant cost-savings to Vattenfall.
Alstom Grid Germany sales head Axel Kossmann said: "This very compact system ensures high reliability and availability of the grid network.
"These projects confirm Alstom’s leading position on the market for gas-insulated substations and open up new cost-saving opportunities for our customers."
Alstom has installed 20,000 gas-insulated substations in 2,500 transformer stations in about 100 countries globally.
Image: Gas-insulated substations F35. Photo: Courtesy of Alstom.
