Such offshore farms certainly work.
Offshore farms can be positioned near densely populated areas where power is needed.
Cape Wind has not disclosed the cost of building the offshore farm, though others have put the price tag at $1 billion.
"If you are building these offshore farms from now to 2025, that's at least a 40 year industry.
In December, partly in response to such concerns, DECC tweaked its subsidies to provide more cash to offshore farms that begin construction at the end of the decade.
Fleets from continental ports commonly construct the farms.The government hopes British firms will one day shoulder at least half of the work new offshore farms require.
The new facility at Grimsby's Royal Dock will include a marine and helicopter centre capable for around-the-clock service to offshore farms.
Last week the Carbon Trust, a government agency, warned that the steep rise in the price of building offshore farms could undermine the whole project.
Lacklustre facilities at ports near the farms are one significant obstacle.The industry says offshore wind power would become cheaper more quickly, and boost Britain's economy, if the government agrees to build lots more offshore farms.
When construction ends, London Array will be the world's largest offshore wind farm, generating more electricity than Denmark's Middelgrunden offshore wind farm, which is the largest offshore farm operational today.
