People in Longtown want more details about how a controversial windfarm is to be installed.

There are worries about how the components of six turbines being sited on land at Hallburn Farm, on the outskirts of the town, will be transported to the site.

Planning permission was granted in October last year but REG Windpower now wants to extend the blade length to allow a diameter of rotation of 97m.

It is understood the height of the turbines will not be affected by the application – which also asks for access works to take place ahead of the erection of the turbines – but there are concerns about how the individual 48.5m-long blades will be brought through the town.

James Hannah, 74, who lives less than a mile from Hallburn Farm, said: “It will cause quite a disturbance through Longtown.

“At the parish council meeting they stated they may transport them during the night. If this is the case it will take more than one night and disturb the residents up Moor Road.”

The objector is concerned that the extended blades will be louder and create more flicker as they turn.

REG Windpower said the components will travel from the M6 at junction 44, along the A7 to Longtown. They will be taken through Swan Street, Mary Street and Moor Road.

Gordon Routledge, vice chairman of Arthuret parish council, said: “We’re looking for an assurance there will be as little disruption to the community as possible.”

The increased blade length would make the windfarm more energy efficient, it is claimed. Each turbine will still stand at 415ft (126.25m), within the overall height planning permission was granted for.

Matt Partridge, development director for REG Windpower said: “The blades will travel in one piece to the site. We will work with Cumbria County Council, the highways authorities and police to plan the movements of components to ensure safe delivery and minimal disruption.”

A decision on the latest application, submitted to Carlisle City Council on August 7, is yet to be made.

The original application received 67 objections and 60 expressions of support. The first rejected application, in August 2011, was appealed and recommended for approval following a public inquiry.