Iberdrola is a holding company. Through its subsidiaries, Co. operates in four segments: network business, which includes all the energy transmission and distribution activities, and other regulated activity originated in Spain, the U.K., the U.S. and Brazil; deregulated business, which includes electricity generation and sales businesses as well as gas trading and storage businesses carried on by Co. in Spain, Portugal, the U.K. and North America; renewable business, with activities related to renewable energies in Spain, the U.K., the U.S. and the rest of the world; and other businesses, including the engineering and construction businesses and the non-power businesses.

Innogy SE is a Germany-based company, which is primarily involved in the utilities industry. The Company operates as a provider of electricity and natural gas. The Company's operations are divided into three segments, namely Renewables, Grid and Infrastructure and Retail. The Company operates plants for electricity generation and production from renewable energy sources. The Company is active in Germany, the Netherlands, Austria, Poland, Romania, Croatia, Slovakia, Slovenia, the United Kingdom, among others.

RWE is an electricity and gas company. The Conventional Power Generation segment consists of the activities of RWE Power, Essent and RWE npower. The Supply/Distribution Networks Germany segment supplies electricity, gas and heat. The Supply Netherlands/Belgium segment comprises the activities of Essent in the Netherlands. The Supply United Kingdom segment comprises the operations of RWE npower. The Central Eastern and South Eastern European segment contains activities in the Czech Republic, Hungary, Poland, Slovakia, Turkey and Croatia. The Renewables, Upstream Gas & Oil and Trading/Gas Midstream segments include the activities of RWE Innogy, RWE Dea and RWE Supply & Trading, respectively.