Duke Energy, which recently merged with Cinergy Corporation, is a diversified energy company with a portfolio of natural gas and electric businesses, both regulated and non-regulated, and an affiliated real estate company. Duke Energy supplies, delivers and processes energy for customers in North America and selected international markets. Duke Energy provides franchised electric and gas service, natural gas transmission, midstream natural gas, wholesale electric generation, energy marketing, real estate, and telecommunications services.

DTE Energy Co. (NYSE: DTE) is a diversified energy company involved in the development and management of energy-related businesses and services nationwide. Our largest operating subsidiaries are Detroit Edison and MichCon. Together, these regulated utility companies provide electric and/or gas services to more than three million residential, business and industrial customers in Michigan. Our electric and gas utility businesses have each been in operation for over a century.

Consumers Energy is one of the nation's largest combination utilities, providing electric and natural gas service to nearly 6.5 million of Michigan's 10 million residents, in all 68 Lower Peninsula counties.

Our Growing Forward strategy calls for investing more than $6 billion in Michigan over the next five years. That includes significant investments in energy efficiency, renewable energy, environmental and customer service enhancements, and new power generation.

Columbia Water & Light is a municipally owned utility company located in Columbia, Missouri.

Created by its members as a not-for-profit joint-action agency in 1977, Southern Minnesota Municipal Power Agency (SMMPA) utilizes a diverse energy mix of renewable energy, coal, and natural gas-fired generation to provide reliable electricity in an environmentally sustainable manner to its 18 member utilities and the 127,000 customers they serve.  SMMPA also works with its member utilities to develop, promote, and implement award-winning programs to help customers use energy wisely and help protect the environment.  SMMPA plans to reduce their CO2 emissions by 90% from 2005 level

Peoples Gas delivers natural gas to 818,000 residential and business customers in the city of Chicago.

To serve our gas distribution customers, we; purchase gas supplies for customers at the lowest cost possible, monitor and upgrade our distribution system to ensure its safety and reliability, install and read meters in your home or business, calculate bills and process customer payments, respond promptly to reports of gas leaks and other emergencies, provide valuable information through our website and customer newsletter.

MidAmerican Energy Company is a global leader in the production of energy from diversified fuel sources including geothermal, natural gas, hydroelectric, nuclear, coal and wind. MidAmerican also leads in the supply and distribution of energy in the U.S. and U.K. consumer markets, with approximately 6.7 million electricity and gas customers. MidAmerican and its subsidiaries, MidAmerican Energy Company, PacifiCorp, CE Electric UK, CalEnergy Generation, Kern River Gas Transmission Company and Northern Natural Gas are established leaders in the world energy marketplace.

Evergy, Inc. (NYSE: EVRG), through its operating subsidiaries, Kansas City Power & Light Company (KCP&L) and Westar Energy, Inc, provides clean, safe and reliable energy to 1.6 million customers in Kansas and Missouri.

City Utilities of Springfield (CU) is a progressive, community-owned utility serving 320 square miles in southwest Missouri since 1945 with electricity, natural gas, water, broadband, and public transportation services.  City Utilities is overseen by a governing board composed of local citizens.  

Over 111,000 CU customers enjoy electricity prices among the lowest in the United States, the convenience of one bill for all utilities, and dependable hometown services delivered with a personal touch.

CenterPoint Energy is composed of an electric transmission and distribution utility serving the Houston metropolitan area, local natural gas distribution businesses in six states, a competitive natural gas sales and service business serving customers in the eastern half of the U.S., interstate pipeline operations with two natural gas pipelines in the mid-continent region, and a field services business with natural gas gathering operations, also in the mid-continent region.