Pjm Interconnection, LLC

Interdependence is a given at PJM Interconnection, which oversees a 62,500-mile section of the North American power transmission grid that spans 13 northeastern and midwestern states and the District of Columbia. The regional transmission organization monitors and coordinates the movement of wholesale electricity in its service territory; its 816 members have a combined generating capacity of 185,600 MW. Sanctioned by the Federal Energy Regulatory Commission, PJM is charged with ensuring fair competition among power purchasers, sellers, and traders; it also is responsible for the reliable delivery of distributed electricity to 61 million consumers in its territory.

Geographic Reach

PJM coordinates the movement of wholesale electricity in all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and the District of Columbia. Its total service area covers 214,000 square miles.


PJM's members include power generation companies, transmission owners, electricity distributors, power marketers, and large industrial consumers.

In addition to overseeing and maintaining the generation and transmission reliability of the electric system, the enterprise is also responsible for maintaining the integrity of the regional power grid as it accommodates new generating plants, and other equipment such as substations and transmission lines. PJM also analyzes and forecasts the future power needs of the region and develops renewable energy resources as a way to expand power supply options and keep prices competitive.

Its Markets and Operations unit has expertise in Energy Marketing, Reliability Pricing Model, Financial Transmission Rights, Demand Response, Financial Credit, Ancillary Services, Synchronized Reserve, and Regulation.

PJM subsidiary PJM Environmental Information Services reports and tracks emissions data and Renewable Energy Credits.

PJM Settlement, a Pennsylvania nonprofit corporation, handles all of PJM’s financial credit settlement activities.

PJM Technologies provides services to existing and emerging energy markets, system operators, and regional transmission operators.

Financial Performance

The expansion of membership resulted in increased service and membership fees in 2012. This and higher FERC fees reimbursement helped to lift PJM's revenues by 12%. Despite higher FERC fee charges, and increased costs for compensation, outside services, and depreciation and amortization, the organization also posted a 12% rise in net income in 2012, thanks to its stronger revenue performance.


The company grows through organic expansion and by absorbing the operations of power transmission and distribution companies. To upgrade its infrastructure, in 2013 PJM authorized $1 billion in improvements to its high-voltage electric transmission system that serves the Mid-Atlantic and all or parts of other states between the Mid-Atlantic and Chicago.

It is also responding to the growing demand to support renewable power and replace coal-burning power plants. In 2012 PJM reported that it had more than 1,000 MW of solar power installed across its service area.

During 2012, generation owners announced plans to retire more than 14,000 MW of coal-fired generation by the end of 2015.

Mergers and Acquisitions

In 2013 the integration of East Kentucky Power Cooperative and PJM brought 3,099 MW of generating capacity and 2,797 miles of transmission lines in to the PJM grid.

Growing its geographic coverage, in 2012 PJM assumed operational control of the transmission systems of Duke Energy Ohio and Duke Energy Kentucky.

Company Background

The organization is structured to secure independence and neutrality in its business operations. It has a two-tier committee structure consisting of 10-person Board of Managers (made up of individuals with no financial interests in PJM market participants) and a Members Committee which represents the interests of participating members. The structure is designed to secure that individual members have strong input on issues while protecting the neutrality of PJM's decision-making process.

In 2011 PJM integrated  FirstEnergy's Ohio and Pennsylvania power utilities' transmission assets into its system.

In a move to improve the efficiency and reliability of its operations, in 2010 PJM teamed up with Midwest ISO to coordinate the installation of synchrophasors to improve their operators' visibility of the grid. The upgrade is funded by the Department of Energy's $3.4 billion smart grid program. In 2010 the company also connected the system to more than 1,500 MW of renewable power, including more than 1,030 MW of wind energy. That year it also formed a new subsidiary to provide an auction platform for trading solar renewable energy certificates.

PJM was formed in 1927 when three utilities interconnected to share resources, thus creating the world's first continuing power pool. In 1997 PJM became the first independent system operator.

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Pjm Interconnection, LLC

2750 Monroe Blvd
Norristown, PA 19403-2429
Phone: 1 (610) 666-8980
Fax: 1 (610) 6664285


  • Employer Type: Private
  • President, CEO: W. Terry Boston
  • Vice Chairman: Lynn Eury
  • Chairman: Howard Schneider

Major Office Locations

  • Norristown, PA

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