Plans for Brtain's biggest offshore windfarm at Scarweather in south Wales have been put on hold after the companies behind the project, including German power company Eon, said that they could not make the £100M costs stack up.
A wind power boom in the US has created a shortage of equipment in Europe, driving up prices.
Property developer Multiplex has submitted plans for a 42-storey skyscraper near London's Elephant & Castle.
The £100M landmark will include three 9m diameter wind turbines, generating enough power to light the entire building.
Thousands of protesters have delayed the start of construction of a 53km tunnel forming part of controversial high speed trans-European railway.
Local residents said that the Alpine environment would be destroyed by the construction of the tunnel linking Lyon and Turin.