Reuters: Britain’s Centrica is reviewing the economic viability of planned wind farms due to soaring costs and the credit crunch, the owner of British Gas said. Centrica, which is raising 2.2 billion pounds (US$3.26 billion) to help fund its proposed 25 percent stake in nuclear power generator British Energy, said it was “revisiting the economics of wind farms given rising raw material and credit costs”. The company, which hopes to start full operation of its new Lynn & Inner Dowsing …