Who We Are - web content

Who We Are

Engineers, operators, analysts, economists and technologists
dedicated to a reliable, sustainable grid; and electricity markets that drive innovation

NYISO Mission & Vision



Ensure power system reliability and
competitive markets for New York in a
clean energy future.



Working together with stakeholders to
build the cleanest, most reliable electric
system in the nation.

Markets eBook - Media Content

Delivering the Grid of the Future

Markets shift the cost and risk of new technology from consumers,
to investors and developers, where it belongs.

About us video and a powerful purpose - web content

A Powerful Purpose

We are dedicated to planning a reliable grid of the future, leveraging open and fair electricity markets, and informing policymakers and stakeholders.

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Transparent by Design - List content

Independent and Transparent by Design

Unaffiliated with market interests, our mission is to serve the public
under the oversight of state, federal and reliability organizations


Federal Energy Regulatory Commission


North American Electric Reliability Corporation


Northeast Power Coordinating Council


New York State Reliability Council


New York State Public Service Commission

Leadership Team Personnel Cards

Leadership Team

Board of Directors

Board of Directors

Roger B. Kelley
Roger B. Kelley

Mr. Kelley has over 40 years of experience in the electric generation and transmission business. From 2007 to 2008, Mr. Kelley served as President and Chief Executive Officer of the New York Power Authority, the largest state public power organization in the U.S. Most recently, he served as President and Chief Executive Officer of Peregrine Midstream Partners, LLC, a midstream gas storage entity in Houston, TX. From 2010 to 2013 Mr. Kelley was President and CEO of Midland Cogeneration Venture, a large co-generation project in Midland, MI.


From 2013 to 2014 Mr. Kelley was President and CEO of Fortistar Renewables, based in White Plains, NY, a developer and operator of renewable energy projects. Mr. Kelley, who graduated with honors and holds a Bachelor of Science degree in Electrical Engineering from Northeastern University, has significant experience in all areas of power generation, including nuclear, natural gas, coal, hydro, solar and landfill, as well as experience with electric transmission issues. He has served as a chief advisor on power issues to two of New York's governors, and as the chief technical member on the board of the New York State Energy Research and Development Authority.


Mr. Kelley has been employed by New York State Electric and Gas Corporation, Maine Public Service Company, Empire Energy Corporation, and LS Power Corporation. Mr. Kelley also served as a member of the Lt. Governor's Renewable Energy Task Force, which was responsible for the development and implementation of New York State's renewable energy portfolio. Mr. Kelley is a licensed professional engineer in New York State.

Teresa Marrinan
Teresa Marrinan

Ms. Marrinan has 35 years of energy experience ranging from her entry-level role as a utility Rate Analyst to a Senior Vice President responsible for commercial operations for a large US generation fleet. She has served as a senior commercial executive focused on strategic planning, portfolio risk management and commercial operations in wholesale and retail US electricity markets.

Ms. Marrinan was Senior Vice President, US SBU Commercial for The AES Corporation, where she was responsible for US commercial operations and portfolio strategies for fossil-fired, wind, solar and energy storage resources across the US, and management of the unregulated retail electricity marketing business. Ms. Marrinan also was an officer of the Dayton Power and Light Company, responsible for fuel procurement and power trading, 24-hour real-time generation dispatch, logistics management of physical commodities and the company’s participation in organized ISO/RTO markets. Most recently, Ms. Marrinan serves as Founding Partner of Hanover Strategy Advisors LLC, where she advises a variety of clients on energy strategy, financial, regulatory and market issues.

Ms. Marrinan serves on the Board of Trustees for Goodwill Easter Seals Miami Valley, and as an adjunct professor in Economics and Finance at The University of Dayton School of Business Administration. She previously served as Board Chair of Foodbank Inc. and Cox Arboretum Foundation, and as a Board Member of the Premier Health Plan. Ms. Marrinan holds an MBA from Xavier University and a BS in Business Administration from the University of Dayton.

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