The group's principal activity is to provide customer-focused energy outsourcing services, including the management, development, operation and ownership of small-to-medium-sized energy facilities. at 31-dec-2001, the group's operating portfolio comprised of 28 controlled or managed projects in north america totaling the equivalent of 164 megawatts (mw). the customers of the group include large retail energy consumers, such as industrial and commercial concerns and local wholesale energy suppliers. during 2001, the group acquired zahren alternative power corporation and trigen energy canada. on 11-jul-2002, the group has sold its 100% ownership interest in u.s. energy environmental corp to kgs environmental llc.