This map shows 146 control areas of the USA and Canada. It includes details about the generation and transmission facilities and the interconnection (metering points). The full-colour map should be a useful tool and resource for those involved or interested in the emerging energy marketing business brought on by de-regulation and open access of the transmission system. Electric utilities, power pools, Regional Councils and the North American Electric Reliability Council (NERC) are responsible for reliability and electricity supply in North America. Control areas are set up to accomplish this task. A control area is an electrical system bounded by interconnection (tie line) metering and telemetry. It controls its generation directly to maintain its interchange schedule with other control areas, and contributes to frequency regulation of the interconnection.