Control area
Energy Market
An electric power system or combination of electric power systems to which a common automatic control scheme is applied in order to:
- Match, at all times, the power output of the generators within the electric power system(s) and capacity and energy purchased from entities outside the electric power system(s), with the load in the electric power system(s).
- Maintain, within the limits of Good Utility Practice, scheduled interchange with other Control Areas.
- Maintain the frequency of the electric power system(s) within reasonable limits in accordance with Good Utility Practice.
- Provide sufficient generating capacity to maintain operating reserves in accordance with Good Utility Practice.
- — Guide to Market Oversight Glossary retrieved 2014-06-26
Water
Part of a power system, or a combination of systems, to which a common electrical generation allocation scheme is applied.
Defense
A controlled airspace extending upwards from a specified limit above the Earth.