Glossary

A buoyant foundation structure anchored to the sea bed via mooring lines. The term includes several foundation types including spar buoys, tension leg platforms and semi-submersibles.

A method of controlling torque on a Wind Turbine Rotor by decreasing the area of the blade surface exposed to the wind

Electrical cable which connects the onshore and offshore substations, or between an AC offshore substation and a DC converter substation.

A vessel used to transport wind farm technicians and other personnel to the offshore wind farm turbines either from port or from a fixed or floating base. Vessels operating today are typically specially-designed catamarans that accommodate around 12 passengers.

Cable protection systems protect subsea cables against various external aggressions. Systems include bend restrictors and bend stiffeners where the cable may be subject to increased loading.

Electrical cable which connects the wind turbines to each other and the offshore substation

The amount of energy generated in a year. Gross AEP is the predicted annual energy production based on the turbine power curve, excluding losses. Net AEP is the metered annual energy production at the offshore substation, so includes wind farm downtime, wake, electrical and other losses.

Wind turbines extract energy from the wind and downstream there is a wake from the wind turbine, where wind speed is reduced.  As the flow proceeds downstream, there is a spreading of the wake and the wake recovers towards free stream conditions.  The wake effect is the aggregated influence on…

Data acquisition, transmission and storage system covering all wind farm assets. The SCADA system enable individual wind turbines, the wind farm substations and associated wind farm equipment to communicate operational status including faults. This allows operators to remotely diagnose faults and issue commands to stop, start and reset turbines and…

REC, represent the environmental attributes of the power produced from renewable energy projects and are sold separate from commodity electricity. RECs are the UK form of Green Certificates.