Manchester City Football Club's plan to power its stadium with its own turbine has been delayed over safety fears.
The stadium would be the first to be powered by its own turbine
The club's 85m (279ft) wind turbine, designed by Sir Norman Foster, was due to be up and running last year.
But experts have warned there is a risk of ice forming on the huge blades and falling to the ground when temperatures drop below -4C (25F).
It means the Eastlands turbine has been delayed while the club's partners conduct their own studies.
The scheme for the club to generate its own electricity - and supply neighbouring homes in east Manchester - was unveiled in 2005.
Planning approval was granted by the city council in August 2006 and it was due to be operational by October 2007.
But the plans were hit by the delay when the EU told European wind turbine manufacturers to factor in the need for an exclusion zone around large turbines in urban areas.
Pete Bradshaw, the club's social responsibility manager, said they were working with its partners in the venture to make sure the technical issues were resolved.
"These largely revolve around suggestions made from within Europe that large wind turbines have to have an exclusion zone around them when the temperature falls below -4C," he said.
"That needs to be thoroughly investigated to see if that is the case, because if it is, clearly the location of the turbine wouldn't be acceptable.
"What we are not going to do is put people in the community, fans, and visitors to the football club at any sort of risk - no matter how minimum that risk is. We wouldn't allow that."
The structure, if built, would be one of the UK's largest land-based turbines and would be larger than the nearby B Of The Bang sculpture.
The three-bladed turbine, provided by independent power company Ecotricity, would produce about two megawatts of electricity.
It's blade tip will reach 120m (394ft), while the nearby B Of The Bang stands 59m (194ft) tall.
Manchester's latest addition to its skyline - the Beetham Tower - climbs to 168.87m (554ft).