A campaign group opposed to plans to erect wind turbines in Haddenham say a developer has yet to install equipment which could prove pivotal to the application.

The Stop Berry Fen Wind Farm group say REG Windpower has yet to install an anemometer, a device used to measure wind speeds and gather data, despite winning planning permission in July last year.

East Cambridgeshire District Council’s planning committee approved plans for an anemometer mast more than 200 feet in height, for a temporary period of 24 months, but campaigners say there is still no sign of it.

When permission was given, the council’s planning officer said the anemometer would gather data to help provide information to councillors when considering plans for the three 410ft tall wind turbines planned for Berry Fen.

Steve Cheetham, chairman of the Stop Berry Fen Wind Farm group, said: “Given the importance of the data which would be collected by the anemometer mast for both REG Windpower and the district councillors who will be making the decision about the planning application, we find it mystifying why at this very late stage before the planning meeting there is no sign of the wind mast being erected.

“What is equally surprising is REG also told the council they needed two years’ worth of wind data to ensure they selected the most appropriate turbines for the site.”

Bruce Caldwell, REG’s project manager for Berry Fen, said that the anemometer mast had arrived on site and would be erected in the next few weeks.

He said: “It will take approximately two days to fully erect the mast, which will measure the wind speed on site. The delay has been due to bad weather on other projects which has delayed the construction team.”

The Stop Berry Fen Wind Farm group says REG Windpower’s plans for three turbines in Berry Fen will be considered by East Cambridgeshire District Council’s planning committee on April 29.