Siemens today declared that the energy payback time of a Siemens SWT-3.2-113 wind turbine for on onshore wind power plant with an average wind speed of 8.5 meters per second is 4.5 months.
This figure is based on a 20-turbine project, including a 13 kilometer grid transmission connection, and includes related efforts like material use, manufacturing, installation, operation and maintenance as well as dismantling and end-of-lifetime treatment.
Meanwhile, the offshore Life Cycle Assessment based on a project with 80 Siemens D6 wind turbines shows the project produces 53 million megawatt hours and saves 45 million tons of CO2, which is equal to the amount of CO2 absorbed by a forest with an area of 1,286 km2 over 25 years.
This figure corresponds to a CO2 emission of only seven grams per kilowatt-hour (g/kWh) compared to the 865 g/kWh found with average global fossil power production.
The declarations are presented in the Environmental Product Declaration (EPD) brochures published by Siemens Wind Power and Renewables, which deliver valuable insights on the environmental performance of Siemen’s products.
The figures are based on Life Cycle Assessments (LCAs) of four defined wind power projects: two offshore wind plants with 80 wind turbines, and two onshore wind projects with 20 wind turbines.
“Environmental Product Declarations provide customers, developers, and authorities the requested transparency on the environmental performance of our products, and they help us to further develop our portfolio, thereby ensuring competitiveness,” said Markus Tacke, CEO of the Siemens Wind Power and Renewables Division.
“I am convinced that this information will greatly benefit both our customers and our company as a whole,” Tacke added.
Rajani Baburajan