Most large wind turbines currently operate at variable speeds.

Higher Perpetual Energy has formed a joint venture with Composite Technologies's turbine manufacturing business, DeWind, to jointly develop 620MW of wind power using 310 DeWind D8.2 turbines in Texas.

Composite Technology Corporation (CTC) (OTCBB: CPTC) today announced that Benton Wilcoxon, CTC's Chief Executive Officer, will present at the Jefferies 6th Global Clean Technology Conference in London on Wednesday, October 22, 2008. CTC's presentation is scheduled for 14:45 p.m. BST.

Higher Perpetual Energy (HPE), the Texas based wind farm developer, has formed a joint venture business with Composite Technologies' turbine manufacturing business, DeWind, to jointly develop 620MW of wind power using 310 DeWind D8.2 turbines.

Composite Technology has announced that its DeWind subsidiary has entered into agreements with Higher Perpetual Energy to form DeWind SWI Wind Farms to develop four wind farms in Texas totaling up to 620MW of electrical energy capacity.