Board of Directors


Katie Coleman

Thompson & Knight, LLP

Katie Coleman is a Partner in Thompson & Knight’s Austin office and serves as the Firm’s Government and Regulatory Practice Group Leader.  Katie has more than a decade of experience representing large customers on energy matters in Texas and has extensive experience with both ERCOT’s competitive market and rate regulation under the PUCT.   Katie also routinely assists companies with regulatory compliance and diligence in contracting and infrastructure projects, including structuring energy agreements, joint ownership agreements for privately owned electrical facilities, energy supply agreements, and cogeneration agreements.

Katie has been recognized for her energy regulatory work by The Legal 500 US 2018, selected as a leading state regulatory lawyer by Chambers USA 2018, honored among The Best Lawyers in America®, selected as “Lawyer of the Year – Energy Regulatory” by The Best Lawyers in America® for 2019, and recognized as one of Texas Lawyer’s 2018 Lawyers on the Rise.  Katie served as President of the State Bar of Texas Public Utility Law Section for the 2016-2017 term.  She is also on the Board of Directors for the Gulf Coast Power Association (GCPA) and is currently serving as Vice President.

Vice President

Mark Dreyfus

MD Energy Consulting

Mark Dreyfus has over two decades as a Texas electric industry leader with extensive experience in electric regulatory policy, legislative policy and representation, ERCOT market design, stakeholder collaboration, problem solving, communications, and executive leadership.

Mr. Dreyfus holds a Ph.D. in resource economics and public finance.  He has worked as a consultant in the electric sector and been employed in federal, state and local government positions. 

Mr. Dreyfus has served as Chief Economist in the policy office at the Public Utility Commission of Texas, as a Commissioner’s assistant, and at Austin Energy, as Vice President of Regulatory Affairs and Corporate Communications.

During his time at Austin Energy, Mr. Dreyfus was responsible for regulatory and market policy before the Public Utility Commission of Texas and the Electric Reliability Council of Texas, for legislative policy and representation, corporate communications, marketing, and rate policy and processes.  He represented the municipal utility sector in the ERCOT stakeholder process, including serving on the ERCOT Board of Directors and as Chair of the ERCOT Technical Advisory Committee.

At MD Energy Consulting, Mr. Dreyfus provides electric sector regulatory and legislative consulting and representation in Austin and ERCOT.


Rebecca Bollenbach

Essentia Advisory Partners

Rebecca Bollenbach serves as a Partner at Essentia Advisory Partners bringing seventeen years of experience in deregulated power and gas. She has worked closely with a range of clients on systems and process optimization in physical and financial power across ERCOT, SPP, SERC, PJM, CAISO, NYISO, ISO-NE, Ontario, and Alberta.

Rebecca has led the design, build and implementation of trading, forecasting, and ETRM systems for multiple wholesale and retail power clients, including nodal trading system suites for FTR trading desks in North America. Rebecca also leverages her extensive knowledge of ISO operations to develop strategies, process and systems for Essentia's clients in Mexico’s emerging energy markets.


Todd Hillman

Sr. Vice President & Chief Customer Officer

Todd Hillman is senior vice president and chief customer officer for MISO, leading all aspects of the regional transmission organization’s customer and external affairs activities. Hillman and his team are responsible for delivering MISO’s commitment to a quality experience for members, stakeholders and employees. Hillman’s team also guides stakeholder affairs, corporate communications and media relations.

Hillman is a veteran customer and business development and origination executive with proven leadership in corporate strategy, project coordination, customer management, product origination, and marketing and development. Most recently, Hillman oversaw the successful integration of the MISO South region, serving as vice president and South region executive for MISO, based in Little Rock. With the introduction of the Entergy system across Arkansas, Louisiana, Mississippi and Texas, the integration was the largest in RTO history.

Hillman joined MISO in 2004 from Houston-based Reliant Energy, where he worked in both Houston and abroad leading contract management and corporate development. Hillman has also worked for DuPont/Conoco and the New York Mercantile Exchange in contract development, and electricity and natural gas trading and origination.

Hillman is vice chairman of the Southeast Reliability Corp. (SERC), and a board member of the Gulf Coast Power Association (GCPA).

Hillman earned Bachelor of Arts and Bachelor of Science degrees from the University of the Pacific and is an Executive Institute graduate from the University of Chicago Booth School of Business.

Board Members

Tom Anson

Clark Hill Strasburger

Tom Anson, a partner at the law firm of Clark Hill Strasburger has a regulatory and administrative law practice that spans over three decades.  He studied energy law and regulated industries in law school and upon graduation clerked for Judge Sam Johnson of the U.S. Court of Appeals for the Fifth District (who served on the “Gas Panel” which reviews Federal Energy Regulatory Commission decisions). Tom’s primary area of practice is state and federal energy and utility law, including regulatory, contract, administrative, and litigation matters. His practice encompasses representation of clients on a variety of licensing, rate, enforcement, rulemaking, and other regulatory matters before state and federal bodies and officials, such as the Public Utility Commission of Texas, the Railroad Commission of Texas, and the FERC. It also involves assisting clients with wholesale power matters and retail electric services in the restructured Texas electric market, and advising clients on various regulatory and quasi-regulatory matters. Tom joined the GCPA Board of Directors in 1997. He served as Secretary from 1997-2003, Vice President in 2004, and President in 2005. He was the Fall Conference Chair in 1992, and the Fall Conference Co-Chair in 2011. In addition he has served as a panel moderator and speaker at several GCPA conferences.

Jim Barkley

Baker Botts

Jim Barkley is a partner at Baker Botts where he focuses his practice on the regulatory counseling of energy industry clients in agency proceedings, projects, corporate transactions and civil litigation. He represents electric utilities, pipelines, power generators, and energy consumers before the Texas Public Utility Commission, Texas Railroad Commission, ERCOT, Texas Reliability Entity, and other federal and state agencies, as well as in state and federal courts. Before joining Baker Botts, Mr. Barkley was a consultant in Washington, D.C., advising several major non-U.S. utilities on U.S. energy and environmental legislation. He also held several positions, including research associate, in the Arms Control and Crisis Management Program at the Washington-based Center for Strategic and International Studies. Jim received a J.D. from Georgetown University Law Center and a B.A. in History & Economics from Baylor University.

Mary Anne Brelinsky


Mary Anne Brelinsky currently serves as President of EDF Trading and EDF Energy Services, the North American trading and customer facing business units within the EDF group.  EDF is the world's largest utility and producer of electricity.  As President of EDF, Mary Anne has grown the retail business to the 5th largest in North America and has been recognized as one of the industry’s Thought Leaders by the Energy Thought Summit, received the Houston Business Journal’s Women in Energy Leadership Award, and was a Greater Houston Women’s Chamber of Commerce Breakthrough Woman in 2017.    Mrs. Brelinsky serves on the Board of Directors for Anahau Energy, Atlas Scholars, DK Energy, and the Greater Houston Women’s Chamber of Commerce.  She also serves on the Advisory Council for the Women’s Energy Network and the University of Houston Energy Advisory Board.   She is a current Board Member of the Gulf Coast Power Association, most recently serving as Board Secretary in 2018 and Board President in 2014. She has also served six terms as Chairman of the ERCOT Demand Side Working Group. Mrs. Brelinsky has an engineering degree from Rensselaer Polytechnic Institute, Magna Cum Laude, and an MBA from the University of Houston.  Mary Anne lives in Houston with her husband and their three sons.

Keith Emery

Vice President of Origination
Tenaska Power Services Co.

Keith Emery is vice president of Origination for Tenaska Power Services Co. (TPS). He is responsible for TPS' marketing and origination activities throughout ERCOT, focusing on developing creative energy management solutions for independent power producers, retail electric providers, and a variety of wholesale and industrial customers. Mr. Emery has 30 years of experience in the electric power industry, including 23 years focused on deregulated energy markets throughout the United States. Before joining TPS, Mr. Emery worked for 13 years with NextEra Energy Resources and Florida Power & Light Company in various power marketing, engineering and operation positions. Mr. Emery has served on the ERCOT Board of Directors since 2015, representing the independent power marketing segment.  Additionally he served five years on the ERCOT Technical Advisory Committee and three years on the ERCOT Wholesale Market Subcommittee. He has been actively involved with the ERCOT market for 20 years and serves on the board of directors of the Gulf Coast Power Association. Mr. Emery is a registered professional engineer and earned a bachelor's degree in electrical engineering and a master of business administration degree from Florida Atlantic University.

Theresa Gage

Vice President, External Affairs and Corporate Communications

Theresa Gage is the Vice President of External Affairs and Corporate Communications for the Electric Reliability Council of Texas (ERCOT), the independent system operator for most of Texas, which manages the flow of electric power to more than 25 million customers. In her role, Gage oversees government and media relations, public affairs as well as client relations and corporate communications. She has 20 years of experience in the electric industry. Ms. Gage joined ERCOT in 2006 after serving for six years as Director of Government Relations for the Public Utility Commission of Texas (PUCT). Prior to joining the PUCT, Gage served as a Policy Analyst for the Texas Senate Economic Development Committee. She started her career in journalism, covering Arkansas and Texas politics and urban and county issues for a daily newspaper. Gage graduated from the University of Texas at Austin with a Bachelor of Journalism and earned a Master of Public Affairs degree from the Lyndon B. Johnson School of Public Affairs in 2001.

Beth Garza

Beth Garza served as the Director of the ERCOT Independent Market Monitor from 2014 - 2019 after serving as the Deputy Director since 2008.  Beth was responsible for monitoring market participant activity, evaluating wholesale market operations and recommending improvements to the wholesale market design. Over the course of her 35-year career in the electric utility industry, Beth has held a variety of leadership roles in generation and transmission planning, system operations, regulatory affairs and market design for both regulated and competitive entities. Prior to joining Potomac Economics, Beth led ERCOT’s Congestion Analysis division for four years.  In this role, she was the business lead for the development of ERCOT’s inaugural Congestion Revenue Rights market implemented as part of the conversion to a nodal energy market.  Beth served as the Manager of Market Affairs, representing NextEra’s (then FPL Energy) interests in ERCOT for five years.  Beth’s initial exposure to ERCOT was during her long tenure with Austin Energy. Beth received her Engineering degree from the University of Missouri and is a registered Professional Engineer in the State of Texas. 

Allison Piper

Founder and Principal
Blue Catalyst Group, LLC

Allison Piper is an ardent supporter of innovation and opportunity in energy markets, with almost two decades of experience in and around the electricity industry. Currently the Founder and Principal of Blue Catalyst Group, LLC, Allison worked in retail energy since 1999, culminating in Chief Operating Officer roles at StarTex Power and Spark Energy and then spending almost two years as President of an executive search firm based in Houston. Allison has served in a variety of roles with the Gulf Coast Power Association, most recently as its President in 2017.  Allison is a founding member and former Chair of the GCPA emPOWERing Women committee which provides scholarship, networking and mentoring services to women in the electricity industry. She formerly served as the golf tournament co-chair for the biannual GCPA conferences. Allison’s electricity and energy industry service includes serving as an independent retail electric provider representative on the ERCOT Technical Advisory Committee in 2013, and has served on the Tulane University Energy Institute Advisory Board since 2015 and is its current Vice-Chair. Allison holds an MBA in Finance and Information Systems from Tulane University in New Orleans, a master's degree from The University of North Carolina at Chapel Hill, and a bachelor's degree from Clarkson University in New York.

Paul Schulze

Vice President of Public Affairs
Hunt Consolidated

Paul Schulze is vice president of public affairs for Hunt Consolidated, Inc., in Dallas. Schulze provides public affairs support and is responsible for government affairs activities on behalf of the Hunt affiliation of companies.

Prior to joining Hunt, Schulze spent almost nine years in Washington, D.C., working on and around Capitol Hill. During his time in D.C., he served as legislative assistant to Congressman Sam Johnson of Texas, as federal liaison for the Texas Education Agency, and later as legislative director and then chief of staff to Congressman John Culberson of Texas. A native of Austin, Schulze has also worked in the Texas Legislature.

Schulze is a 2009 Marshall Memorial Fellow and an alumnus of the Texas Lyceum. He currently serves on the board of directors for the Gulf Coast Power Association.

Schulze received a bachelor of arts in government from the University of Texas at Austin and a master of business administration from the University of Maryland.

Mark Walker

Assistant General Counsel
Xcel Energy Services Inc.

Mark Walker serves as Assistant General Counsel for Xcel Energy Services, Inc.  He was previously with the law firm of Clark Hill Strasburger and before that was Vice President of Regulatory Affairs for NRG Energy’s Gulf Coast Region. He has served on the ERCOT ISO Board and the Technical Advisory Committee in addition to a number of board and officer positions in electricity trade organizations. Prior to joining NRG, Mark was Deputy General Counsel and General Counsel for ERCOT, beginning on the “startup” team for the initiation of the ERCOT competitive market in 2001, the most successful in the nation. Prior to his ERCOT service, for 10 years Mark was Associate General Counsel for the Lower Colorado River Authority where he focused on electric utility and environmental matters. Mark received his B.A. from Baylor and J.D. from the University of Texas School of Law.

Advisory Board Members

Kristy Ashley

Director, Market Intelligence - ERCOT
Customized Energy Solutions

Kristy Ashley serves as Director, Market Intelligence – ERCOT, for Customized Energy Solutions. In her role, she provides reporting and analysis to CES clients by leveraging her twenty years of experience on both the commercial and regulatory side of the electric markets. Prior to joining CES, Ms. Ashley was Director, Market Development - South and West, for Exelon Corporation, one of the nation’s largest competitive power generators, where she was responsible for wholesale market policies in ERCOT, Southwest Power Pool and other energy markets in which Exelon operates, and she developed the company’s position on policy matters at the Public Utility Commission of Texas (PUC). Ms. Ashley was actively involved in the design of the Texas nodal market. She has held leadership positions in the Texas Competitive Power Association and has served on ERCOT’s Technical Advisory Committee, Wholesale Market Subcommittee and other market stakeholder working groups. She also served as the alternate representative in the Independent Generator Segment on the ERCOT Board of Directors. Ms. Ashley worked for the Exelon Power Team as a trader and asset manager. Prior to joining Exelon, she worked for Mirant Corporation on their ERCOT asset management desk. Ms. Ashley joined the Board of Directors of GCPA in 2016 and is also chairing the GCPA emPOWERing Women Committee for 2016.  She also developed and led the first two GCPA emPOWERing Women Leadership Conferences in 2014 and 2015.

Brad Jones

Brad Jones is a distinguished energy industry executive with 29 years of wide-ranging experience, including grid operations, power plant operations, generation development, project finance, wholesale and retail market design, and regulatory and legislative affairs. Mr. Jones accepted the position of President and CEO of NYISO effective October 2015. Before this, Mr. Jones had been with the Electric Reliability Council of Texas (ERCOT) since 2013, where he was a Senior Vice President and Chief Operating Officer with responsibility for Operations, Grid Planning, and Commercial Operations. Prior to that, he was Vice President for Commercial Operations at the ERCOT. Before joining ERCOT, Mr. Jones was Vice President for Government Affairs at Luminant, the competitive generation subsidiary of Energy Future Holdings. Prior to that, Mr. Jones worked at TXU Corporation where he began as a Plant Engineer and rose through the organization to become Vice President for Generation Development. Mr. Jones earned a Bachelor of Science degree in Mechanical Engineering from Texas Tech University at Lubbock and a Masters of Business Administration degree from the University of Texas at Arlington. He is a licensed Professional Engineer.

Marcie Zlotnik

Managing Partner
BZMZ Interests

Marcie Zlotnik is a senior executive and entrepreneur recognized for successfully establishing new businesses and advancing existing companies into energy market and telecom leaders.  She was the co-founder and Chairman of the Board of StarTex Power, until its sale to Constellation in 2011, and earlier she was a member of the Board of Gexa Energy. Ms. Zlotnik served on the Board of Crius Energy, one of the largest independent energy retailers in the United States. Zlotnik currently chairs the Business Advisory Board at the University of Texas, McCombs School of Business, on the Executive Committee of the Sugar Land Skeeters Foundation and the advisory boards of the Gulf Coast Power Association (GCPA) and its emPOWERing Women Program. She is the 2018 recipient of the GCPA Pat Wood Power Star, the inaugural recipient of the GCPA emPOWERment Award and was inducted into the University of Texas at Austin McCombs School of Business Hall of Fame in 2015. Her commitment to the community is equally strong; she is the current Treasurer and past President of the Sugar Land Skeeters Foundation and on the Advisory Board of Directors of Girls Inc. of Greater Houston. Ms. Zlotnik earned a Bachelor of Business Administration in Accounting from the University of Texas at Austin.  She and her husband have three sons, a daughter-in-law and live in Houston, Texas.

Calvin Crowder

President & CEO

Calvin Crowder is President and CEO of GridLiance, an independent transmission company that partners with electric cooperatives, municipal utilities, and others to unlock the financial value of existing transmission assets and invest in transmission projects. Crowder is responsible for the strategic vision and overall business operation of GridLiance as it invests in transmission infrastructure and plans for the future and improves the reliability of the grid.

With nearly 30 years of electric utility experience, Crowder joined GridLiance in March 2016 and was named President and CEO of GridLiance in 2017.

Before joining the company, Crowder held several roles of increasing responsibility at American Electric Power, one of the largest electric utilities in the United States, rising to the rank of Executive Director. In 2007, he was named President of Electric Transmission Texas, LLC, a jointly owned subsidiary of AEP and Berkshire Hathaway Energy. There he oversaw the growth of ETT, which constructs, owns, and operates transmission facilities as a regulated utility within the Electric Reliability Council of Texas, to $3 billion in assets.

Prior to working at AEP, Crowder held a variety of executive and policy leadership roles at Central and South West Corporation in Dallas, Texas. He began his career in the electric utility industry at Central Power and Light Company in Corpus Christi, Texas.

Crowder earned a Bachelor of Arts in Economics and a Master of Arts in regulatory Economics from New Mexico State University. He serves on the board of the Gulf Coast Power Association and Big Brothers and Big Sisters Lone Star. Previously, he served on the board of the Make-A-Wish Foundation of Central and South Texas.  He joined the GCPA Board of Directors in 2010.

Robert King

President, Smart Meter Global
Advisor Emeritus, Good Company Associates

Bob King provided government affairs, as well as, business development advice and support services to a long list of emerging energy technology and service companies, as President of Good Company Associates, Inc., for over 25 years.  His firm, which he continues to advise, has a reputation for thought leadership in utilities and energy markets policy, especially with respect to renewable energy, efficiency, storage and demand management.  Since 1999, a major area of focus was smart energy technology and the power of information—from AMI to the Internet of things.  He is currently focused on the issue of data accessibility and innovation, and under the umbrellas of Smart Meter Global, Inc. Bob is working to create a unified, international platform for simplified but secure energy data sharing.  Bob previously served as Vice President for Governmental Affairs of Smart Energy Water, Inc.,  a Vice President of Resource Management International, the precursor of Navigant Consulting, and regional director of KENETECH Corporation.  He earlier had a 20-year career in government service, including as first director of renewable energy programs for the TVA, and as clean energy advisor to the Governor of California, and the Governor and Lt. Governor of Texas. He served on the board of the Advanced Energy Management Alliance of North America, the Gulf Coast Power Association, and Mission:data for many years.  He was founder of the Texas Solar Energy Society, the Texas Renewable Energy Industry Association, the California Wind Energy Association, Center for the Commercialization of Electric Technologies, and the South-Central Partnership for Energy Efficiency as a Resource.  He is a registered engineer and lobbyist, and trained mediator. Bob is a graduate of Vanderbilt engineering school, and the LBJ School of Public Affairs, at UT, Austin.

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