Delta4000 series

Driven by our ambition to actively support the energy transition and guided by our sustainability vision, “Delivering sustainable wind solutions for a resilient tomorrow,” we continuously improve the sustainability performance of our products across their entire lifecycle. From turbine design to construction, installation, service and end‑of‑life, we consider economic, environmental, social, and health and safety aspects to enhance efficiency, environmental performance, and circularity. Close supplier partnerships and our sustainability product offerings help reduce CO₂e emissions and waste while increasing customer value. Customer satisfaction is decisive to our business success, which is why we actively consider customer perspectives, understand their needs, and continuously adapt our products and services through ongoing dialogue, including regular satisfaction surveys and stakeholder roundtables.

We perform life cycle assessments (LCAs) according to ISO 14040 and ISO 14044 to evaluate the environmental impacts of our products in order to identify optimization potential and track improvements. We published our first LCA report in 2020 and analyzed several more wind farms since then, covering all relevant turbine types. Based on the results of these LCAs, we created Environmental Product Declarations (EPD) to provide harmonized and externally verified sustainability information. These analyses show that the specific carbon footprint, measured in carbon dioxide equivalents (CO2e), for producing 1 kWh of electricity can be as low as 2.7 g CO2e over a turbine’s entire life cycle.

Carbon payback time is the period a turbine must operate to offset its lifecycle CO₂e emissions. For Delta4000 turbines, it ranges from 1.9 to 4.2 months, while the energy payback time – the time needed to generate the energy used over the turbine’s lifecycle – is 5.0 to 7.7 months.