Calvin Butler

Functions as a holding company whose subsidiaries provides energy transmission and distribution services

Provides gas and electricity to Baltimore and central Maryland

Operates as a holding company whose subsidiaries generates, distributes and transmission electricity

Operates as a state chartered commercial bank

Functions as a College/University

Operates a voluntary health organization

Federal reserve bank

Provides research and technology services

Provides healthcare services and operates outpatient clinics

Offers reference materials and information resources on the electricity industry to its members

Provides economic and financial education services

Provides property and casualty insurance services

Operates forum for distinguished global leaders to share the insights about major issues

Operates as an international forum of business leaders

Provides educational and training programs

Operates as premier organization of business and civic leaders

Provides educational services

Operates a zoo

Chamber of Commerce

Provides atmospheric research

Provides civic leadership development programs and leadership series for cross-sector leaders

Operates as a fraternity for social and political affairs

Functions as a College/University

Manages charitable funds

Operates as a golf club and provides dining services

Acts as an Umbrella Fund

Generates and distributes electric power

The Illinois Energy Association is a trade association representing major investor-owned electric, natural gas, and water utilities, as well as power generation companies. The non-profit company is based in Springfield, IL. Its members include companies such as Commonwealth Edison, Constellation, Illinois-American Water Company, MidAmerican Energy, Nicor Gas, NRG Energy, Peoples Gas & North Shore Gas, Vistra, and Mt. Carmel Public Utility. The association coordinates its members' activities before the Illinois General Assembly, Congress, and regulatory agencies, and develops industry positions and policies on legislative and regulatory issues. It plays a role in government relations and legislative strategy to support the energy sector's interests. The association provides resources on the history and current state of the electric power industry in Illinois, including infrastructure investments and utility service maps. Its governance includes a board of directors composed of the CEOs of member companies.

Functions as a foundation or endowment

Voices For Illinois Children is a non-profit company based in Chicago, IL.

Functions as a College/University

Operates as a public library system

Operates as a membership council and operates as congress library

Engages in fostering of entrepreneurs and businesses

Operates as a non-profit organization which dedicating to discuss economic, business and social issues

The Annika Foundation is a company based in Orlando, FL.