ADLS system activated on Koningspleij Wind Farm turbines

At an increasing number of Dutch wind farms with red obstacle lights, an Aircraft Detection Lighting System (ADLS) is being introduced. Thanks to this system, the red obstacle lights only turn on when aircraft traffic is detected. This is now also the case for the onshore wind farm Koningspleij in Arnhem.

A transponder system by Lanthan Safe Sky has been activated at the four wind turbines of Koningspleij Wind Farm, after the Dutch Inspectorate for the Environment and Transport Inspectorate (ILT) approved the detection system.

Wind turbines with a tip height of more than 150 metres, as at Koningspleij Wind Farm, must by law be fitted with obstacle lighting. This lighting makes the wind turbines visible to air traffic. Using a detection system allows for the obstable lighting only to switch on when an aircraft approaches the wind turbine at dusk or at night. It switches off again when no aircraft is flying near the wind turbine.

A positive collaboration between the ILT and all parties involved, and a test flight led to approval of the transponder system. The transponder system was made possible partly with a grant from the Province of Gelderland. The province launched a subsidy scheme for ADLS in September 2023.

“We have actively informed the operators of the Gelderland wind farms about the subsidy for aircraft detection. The Aircraft Detection Lighting System contributes to support at wind farms, and we aim to minimise nuisance as much as possible.”

Ans Mol, energy deputy of the province of Gelderland

Koningspleij Wind Farm

Windpark Koningspleij comprises four wind turbines on and near Industriepark Kleefse Waard (IPKW) in Arnhem. The turbines are of type Enercon E-115 EP3 with a tip height of 177.5 m and a rotor diameter of 115.7 m. Together, they can generate 34.5 million kWh of energy annually. This is the equivalent of over 5 per cent of the total electricity consumption in Arnhem.

The wind farm is an initiative of the energy cooperative Rijn and IJssel Energiecoöperatie, Prowind and energy company Pure Energie. Three of the four wind turbines are owned by Rijn and IJssel Energiecoöperatie. There are 575 co-owners who participate in the wind farm through Rijn and IJssel Energiecoöperatie. The fourth belongs to Pure Energie.

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