Rødsand 2

Location

• The wind farm is situated south of the Danish island of Lolland in the Baltic Sea, approximately 9 kilometers southeast of Rødbyhavn.

General Details

• Name: Rødsand 2 or Nysted II
• Country: Denmark
• County/Zone: Offshore
• Latitude: 54° 33' 30.1"
• Longitude: 11° 31' 50.4"
• Depth: The turbines are installed at a water depth of 5-13 meters.
• Distance from Shore: Approximately 9 kilometers.

Technical Specifications

• Number of Turbines: 90
• Turbine Model: Siemens SWT-2.3-93
  • Power Capacity: 2.3 MW per turbine
  • Rotor Blade Diameter: 93 meters
  • Hub Height: 68.5 meters
  • Total Height: 115 meters
• Total Nominal Power: 207 MW.

Layout and Infrastructure

• The wind farm covers an area of approximately 35 km² (or 34 km² as per some sources).
• The turbines are arranged in five curved rows, each containing 18 turbines. This curved layout was chosen to optimize wind efficiency.
• The turbines are erected on concrete gravity foundations, with each foundation weighing 1,460 tons and constructed in Poland before being transported to the site.

Electrical Infrastructure

• The turbines are connected via 33kV underwater cables to an offshore substation.
• From the substation, the power is transmitted to the shore via 132kV cables, which connect to the energy company SEAS-NVE’s grid.

Construction and Commissioning

• Construction Start: Second quarter of 2009
• Commissioning: The wind farm became operational in August 2010 and was fully commissioned in October 2010, six months ahead of schedule.
• Contractors: Key contractors included Aarsleff and Bilfinger Berger (foundations), NSW (electrical grid), Siemens (turbine manufacture), and A2SEA (turbine installation). Energinet.dk was responsible for the construction of the substation and the grid to the coast.

Environmental Impact and Benefits

• The wind farm can produce approximately 800 million kWh of power per year, sufficient to supply electricity to about 200,000 households and meet 2% of Denmark's power consumption.
• Annual CO₂ emission savings amount to 296,296 tonnes.

Ownership and Operation

• Developer: E.ON Climate & Renewables (now part of RWE)
• Operator: RWE Renewables
• Owner: SEAS-NVE Energy Group owns 80% of the project, while E.ON (now part of RWE) retains a 20% stake and continues to operate the wind farm.

Financial Details

• The project was estimated to cost approximately $554 million (or €430 million).
• E.ON signed an agreement with SEAS-NVE to sell its 80% stake in the project for DKK 1.1 billion ($200 million) in November 2013.

Regulatory and Policy Context

• The project was part of an energy agreement in the Danish parliament to build two offshore wind farms with a total capacity of 400 MW. It aligns with Denmark's goals to increase the share of wind power in its electrical supply, as per the Kyoto Protocol and EU renewable energy requirements.