On the temporal granularity of joint energy-reserve markets in a high-RES system

The cost-efficient integration of variable renewable power (vRES) requires adequate operating reserve and energy markets. This paper focusses on the benefits increasing temporal granularity joint energy-operating markets in a case study two high-vRES systems. Specifically, impact frequency (i.e., how often reserves are sized procured) resolution or contract duration length sizing procurement blocks) is isolated by comparing year-long unit commitment economic dispatch simulation results. We optimize system’s operation consecutive stages: scheduling generation units with reserves, intra-day adjustments schedules real-time activation flexibility to compensate for imbalances. results suggest that dynamic more frequent sizing, limiting higher allow reducing total cost 1.5–1.8%, while eliminating scarcity These design changes facilitate intermittent renewables Finally, some challenges following proposed market highlighted.