Providing temporary use of non-downloadable computer software via the global computer network for the purpose of providing users with an online electronic trading system for the execution of trades involving commodity derivative products and related financial instruments; Providing a website that provides users with an online electronic trading system for the execution of trades of derivative contracts, including power, natural gas, carbon emission, renewable energy, and environmental options and futures; Platform as a Service (PaaS) featuring computer software platforms for the purpose of providing clearing members access to real time and historical data relating to margins, payment flows and posted collateral via a graphical user interface