Ernst Frey-Burkard

AEW Energie AG provides electrical power and heating. It produces electricity from water, wind, and solar energy sources, as well as focuses on planning, installing, constructing, operating, remote monitoring, controlling, and maintaining heating systems for retail customers. The company is headquartered in Aarau, Switzerland.

Axpo Holding AG engages in the trading and the marketing of solar and wind power. It provides electricity-related products and services, and grids and telecommunication services. The firm offers services in the areas of finance and controlling, corporate insurance, development and communications, information technology and risk management, taxes, legal services and human resources to its subsidiaries. The company was founded in 2001 and is headquartered in Baden, Switzerland.

Ernst Frey AG provides construction services. Ernst Frey AG is based in Kaiseraugst, Switzerland and has subsidiaries in Germany and Switzerland.

Kraftwerk Augst AG operates a hydroelectric power plant. The company was founded in 1983 and is based in Augst, Switzerland. The Swiss company is ultimately controlled by the State of Aargau.

Part of AEW Energie AG, BEC AG provides energy services. The company is based in Gipf-Oberfrick, Switzerland. BEC was acquired by AEW Energie AG on May 15, 2013.