Regional Transmission Organizations

Regional Transmission Organizations
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Name	Regional Transmission Organizations
Abbreviation	RTO
Formation	1990s
Type	Independent system operator
Headquarters	Various
Region served	North America

Contents

Regional Transmission Organizations

Regional Transmission Organizations coordinate electricity transmission across multi-state areas, balancing supply and demand among utilities like Duke Energy, Southern Company, Exelon, Pacific Gas and Electric Company, and American Electric Power. They interact with regulators such as the Federal Energy Regulatory Commission, market participants including Enron-era traders and contemporary firms like NextEra Energy and NRG Energy, and institutions like the North American Electric Reliability Corporation and the Independent System Operator community. RTOs link to policy frameworks such as the Energy Policy Act of 1992, regional planning bodies like the Midcontinent Independent System Operator and PJM Interconnection, and research from universities such as Massachusetts Institute of Technology and Stanford University.

Overview

RTOs are independent entities overseeing transmission grid reliability and market operations across regions that often include utilities like Consolidated Edison and Entergy Corporation, regulators like the Public Utility Commission of Texas, and regional reliability councils such as the Northeast Power Coordinating Council. They emerged to enable non-discriminatory access to transmission assets owned by firms like International Transmission Company and Hydro-Québec, coordinating planning activities with agencies such as the North American Electric Reliability Corporation and stakeholders including General Electric and Siemens. RTOs administer markets used by generators like Dynegy and load-serving entities represented by Calpine and Dominion Energy, interfacing with policy drivers including the Clean Air Act amendments and procurement programs in states like California and New York.

Early transmission coordination involved vertically integrated utilities exemplified by Tennessee Valley Authority and Commonwealth Edison, with landmark moments such as the Energy Policy Act of 1992 prompting restructuring led by the Federal Energy Regulatory Commission orders like FERC Order 888 and FERC Order 2000. The 1990s and 2000s saw formation of entities including PJM Interconnection, New York Independent System Operator, ISO New England, Midcontinent Independent System Operator, and California ISO, informed by academic work from Cornell University and Princeton University and controversies involving firms such as Enron. International comparisons involve frameworks like National Grid (UK) and regulatory responses after events like the Northeast blackout of 2003 and policy debates involving lawmakers in the United States Senate and state legislatures.

RTO governance models vary: some use stakeholder committees similar to those at PJM Interconnection and California ISO, board structures with independent directors as in ISO New England, and market monitoring units akin to Independent Market Monitor arrangements used by New York Independent System Operator. RTOs coordinate with entities such as North American Electric Reliability Corporation, regional transmission owners like American Transmission Company, and transmission planners including Western Electricity Coordinating Council. Legal and regulatory oversight involves the Federal Energy Regulatory Commission, state regulators such as the California Public Utilities Commission, and judicial review in courts including the United States Court of Appeals for the D.C. Circuit.

RTOs perform reliability coordination tasks historically done by utilities such as Pacific Gas and Electric Company and Southern Company, execute day-ahead and real-time markets used by generators like AES Corporation and Calpine, and manage congestion through mechanisms developed with vendors like General Electric and ABB. They conduct transmission planning with stakeholders including Siemens and NextEra Energy Resources, oversee interconnection queues involving developers such as Pattern Energy and Invenergy, and implement ancillary services procured by authorities like New York Independent System Operator and PJM Interconnection to maintain reserve margins after events like the Southwest blackout and in response to standards from North American Electric Reliability Corporation.

Markets run by RTOs employ pricing constructs such as locational marginal pricing used by PJM Interconnection, unit commitment procedures similar to those studied at Massachusetts Institute of Technology, and capacity markets contested in cases before the Federal Energy Regulatory Commission and litigated by companies like Constellation Energy. Auction designs reference economic theory from scholars at University of Chicago and Yale University and have been shaped by incidents involving Enron and policy interventions in states including New York and Illinois. RTO pricing affects participants such as Dominion Energy, demand response providers like EnerNOC, and renewable developers including Vestas and First Solar interacting with mandates such as Renewable Portfolio Standards.

Critiques of RTOs focus on issues raised by stakeholders like Consumer Advocate offices, market behavior investigated after Enron and the Northeast blackout of 2003, and debates about capacity market design brought to the Federal Energy Regulatory Commission and federal courts including the United States Supreme Court. Ongoing reforms address transmission investment concerns voiced by utilities such as American Electric Power and renewable integration challenges faced by developers like NextEra Energy and Sunrun, with proposed policy responses from legislators in the United States Congress and technical recommendations from institutions including Lawrence Berkeley National Laboratory and National Renewable Energy Laboratory.