The Market Surveillance Committee (MSC) and the PEMC Market Assessment Group (MAG) carry out the monitoring and assessment of the electricity spot market and its participants as mandated by the WESM Rules and the Market Surveillance, Compliance and Enforcement Market Manual. The MAG continuously monitors, collects and processes market indicators for use in the generation of market monitoring indices to facilitate the drafting and publication of assessment reports subject to the guidance of the MSC (see Catalogue of Market Monitoring Data and Indices).

To effectively carry out its independent market monitoring and assessment functions, the MAG developed a market assessment system that efficiently, securely and automatically monitors and sends alerts on various significant market events. This system continuously collects market monitoring data from various resources, processes them, and eventually assists in the generation of up-to-date market index reports and market analysis.