BKW AG engages in the production and sale of electricity, transmission of electricity and related engineering services. The company is headquartered in Bern, Bern and currently employs 12,223 full-time employees. The company went IPO on 2011-12-12. The company covers energy supply, from production and transmission to trading and distribution. The firm's production portfolio incorporates hydroelectric and nuclear power plants, gas-fired power plants and renewable energy facilities. Its subsidiaries include Aicher, De Martin, Zweng AG (ADZ), Arnold AG, engaged in the construction and maintenance of energy, telecommunications, transport and water infrastructure networks; Antec Group AG, engaged in building technology infrastructure services; BKW ISP AG, engaged in electrical installation, telematics and photovoltaics; Ingenieurgemeinschaft Bilek + Kirschner GmbH and Kraftwerks- und Anlagen Engineering GmbH, which focus on engineering services and consulting; IWAG Ingenieure AG (IWAG); Schmid Amrhein AG; Inag-Nievergelt AG (Inag), as well as Enerpeak AG, offering energy and safety engineering solutions for buildings, among others.