The difference between scheduled and real power flows on a transmission path, assuming zero inadvertent interchange (also called loop flow, unscheduled power flow, or circulating power flow)
The difference between a utility's electric generating capacity (usually expressed in MW) and anticipated peak load; Operating Reserve is a subset of Planning Reserve
Federal regulations that promulgate a single set of air emissions reduction targets instead of multiple targets for every emissions source within a plant
A for-profit commercial entity that buys and sells electricity and electricity services in wholesale or retail markets and resells them to its customers
