The company refused permission for four wind turbines in North Dorset has called the decision 'a missed opportunity for Dorset.'
Ecotricity appealed North Dorset District Council's decision to refuse permission to build turbines at Silton, but the appeal was turned down by The Planning Inspectorate.
A spokesperson from Ecotricity said: "We are surprised and disappointed by the Inspector's decision. We believe we had a very strong case for appeal and still maintain that Silton is an appropriate location for four wind turbines.
"Clearly we think it is the wrong decision, particularly given the expert professional advice from the Council's own Planning Officer."
The appeal against the Silton development was turned down for several reasons including the character, location and appearance of the turbines.
Dorset needs to generate 15 per cent of its total energy from renewable sources by 2020, but public opinion appears to be firmly against wind farms. A proposed offshore wind farm has come under fire from locals and Dorset MPs, while a report has suggested the county could benefit from geothermal energy.
"It is a missed opportunity for Dorset - the Silton wind farm could have powered the equivalent of 6,769 homes every year through clean, renewable energy: that would have been a big boost for Dorset's green credentials" added the Ecotricity spokesperson.
"But it's also a missed opportunity for the UK - in a time of general economic stagnation, green industry is growing - it accounted for a third of the UK economy's growth last year - bringing jobs and investment to the UK.
"We need to see projects like this delivered, not only to meet our climate targets, but to continue the momentum of the UK's green economy."