Chicago Climate Exchange

Flett Exchange was a New Jersey-based electronic exchange for environmental commodity credits, established around 2004. Flett specialised in US environmental market instruments including NOx (nitrogen oxide) allowances under the EPA SIP Call, SO2 (sulphur dioxide) allowances under the Acid Rain Program, Regional Greenhouse Gas Initiative (RGGI) carbon allowances, and Renewable Energy Certificates (RECs). The exchange served power generators, utilities, and compliance buyers navigating the complex US state and federal cap-and-trade regulatory frameworks for air emissions.

The Winnipeg Commodity Exchange (WCE), founded in 1887, was Canada's primary agricultural futures exchange, serving as the world's leading market for canola futures and other Canadian crops including oats, flaxseed, and domestic feed wheat. In 2007, WCE was acquired by Intercontinental Exchange (ICE) and renamed ICE Futures Canada in 2008. Canola futures, the exchange's flagship contract, continue to be one of the most actively traded agricultural derivatives globally under ICE.

The Chicago Mercantile Exchange (CME) is one of the world's most influential financial exchanges, founded in 1898 as the Chicago Butter and Egg Board and renamed CME in 1919. Headquartered in Chicago and part of CME Group, CME offers futures and options across meats, currencies, Eurodollar interest rates, equity index products, and a range of financial instruments, providing global risk management solutions to participants in over 150 countries.

Houston Street Exchange was an early electronic over-the-counter (OTC) energy trading platform based in Houston, Texas, offering spot and forward contracts for crude oil and refined petroleum distillates. Launched in the late 1990s during the initial wave of online energy trading, the platform ceased operations in the early 2000s following the collapse of energy trading markets in the wake of the Enron scandal.