The BWC EXCEL is a modern 7 meter (23 ft) diameter, 10,000W wind turbine designed for high reliability, low maintenance, and automatic operation in adverse weather conditions. It is available in two configurations: battery charging and grid-connected (the pumping version is not currently available). The BWC Excel is a ruggedly built turbine that comes with the longest warranty (5 years) in the industry.
In October 2008 the Excel-S was upgraded to a more efficient Powersync II inverter. In July 2009 the Excel turbine was upgraded with a more powerful alternator and longer blades. Performance has been improved by an average of 25%. In July 2009 the warranty on the Excel wind turbine was increased to 10 years – the longest in the industry.