Energy Exemplar® is the market leader in the technology of optimisation-based energy market modelling. PLEXOS® Integrated Energy Model (PLEXOS) is used by independent system operators, regulators, electric generation and transmission companies, gas producers and retailers, energy traders, regulatory and policy bodies, consultants and analysts across every region of the world for a wide range of applications from short-term analysis to long-term planning studies. PLEXOS is a truly next-generation energy market simulator with the most advanced mathematical programming engine producing robust, fully co-optimised solutions based on linear, mixed integer and quadratic and stochastic optimisation.