ScottishPower is set to double its wind capacity in Northern Ireland with the acquisition of a 17 MW project at Callagheen in County Fermanagh for £18 million. It was sold by the project developer, Wind Farm Development, a joint venture between Renewable Energy Systems of England and B9 Energy Services of Northern Ireland. Construction began in June and the 13 Siemens turbines are due to be operational by March, 2006. ScottishPower already owns three wind farms in the Northern Ireland totalling 15 MW. It is the largest UK wind generator with a portfolio totalling 256 MW and 58 MW under construction-in addition to Callagheen. It says it plans to invest £1 billion in UK wind farms by 2010 producing more than 1000 MW.