NOTE: Regulated Entities are responsible for registering their company and keeping their registration information current. Information on how to register and maintain company information is available on the Company Registration web page: http://www.ferc.gov/docs-filing/company-reg.asp The grouping of the Traditional Cost of Service Public Utilities by Division identifies the Division primarily assigned tariff filings of these entities within the Office of Energy Market Regulation.

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Eastern Division Central Division Western Division Pipeline Division

Electric Reliability Regions: FRC FRCC NPCC Most of SERC Back to top RTO/ISOs: ISO New England, Inc. New York ISO, Inc. Northern Maine ISA PJM Interconnection, LLC Back to top Traditional Cost of Service Public Utilities PDF | XLS updated 02/11/2013 Electric Reliability Regions: FRC FRCC NPCC Most of SERC Back to top RTO/ISOs: ISO New England, Inc. New York ISO, Inc. Northern Maine ISA PJM Interconnection, LLC Back to top Electric Reliability Regions: ERCOT MAPP Parts of SERC Back to top RTO/ISOs: MISO SPP Back to top Subject Matter Responsibilities (Electric): Qualifying Facilities (QFs) Back to top Traditional Cost of Service Public Utilities PDF | XLS updated 02/11/2013 Federal Power Administrations PDF | XLS updated 11/06/2012 Electric Reliability Regions: WECC Back to top RTO/ISOs: CA ISO Back to top Subject Matter Responsibilities (Electric): Market-Based Rates (including Power Marketers) Mergers & Corporate Information Securities Issuances Back to top Traditional Cost of Service Public Utilities PDF | XLS updated 02/11/2013 Market Based Rates Public Utilities PDF | XLS updated 02/11/2013 Subject Matter Responsibilities (Natural Gas): Ad Valorem Taxes Section 311 Rates Wellhead Determination Interstate Pipelines under the Natural Gas Act PDF | XLS updated 02/11/2013 Intrastate and Hinshaw Pipelines under Part 284 of the Commission’s Regulations PDF | XLS updated 02/11/2013 Interstate Oil Pipelines under the Interstate Commerce Act PDF | XLS updated 02/11/2013