Meet our board members.




Andrew Barth is Vice President at Incite Energy, LLC, a national energy management firm and Demand Response service provider that assists clients with the development and implementation of integrated energy solutions. Based at Incite Energy’s headquarters in Houston, TX, Andrew combines years of industry experience, customer service, and technology to provide client based solutions. His areas of expertise are in the planning and sourcing of commodity procurement strategies, risk management, and the development of efficiency and sustainability initiatives.

Andrew was previously Vice President of Business Development for World Energy Solutions, a publicly traded company that assists clients in executing strategies to control and reduce energy costs through the application of consulting and brokerage services. Additionally, he has held Regional and National Sales Director positions in both Dallas and Houston, TX for World Energy Solutions and GSE Consulting, LP (formerly Gulf States Energy) where he recruited, developed, and managed sales teams across the country. Andrew is a graduate of the University of Missouri – Columbia and is a certified member, and President of The Energy Professionals Association, (TEPA).



TEPA director

Shannon McGriff has been in the deregulated energy market for nine years and is the first ever appointed Director of The Energy Professionals Association. Shannon has been a TEPA member since 2008 and served as the TEPA Conference Chair from 2012 on. As TEPA Director, Ms. McGriff will help drive the initiatives and strategic plans of the TEPA Board including fundraising, marketing, community outreach and implementing the education program, as well as growing national membership. She will continue to manage TEPA’s events both in Texas and in the Northeast, which include the monthly member meetings, networking events, and national conferences. Under McGriff’s first year TEPA membership grew 30% and TEPA successfully acquired The Illinois Energy Professionals Association (ILEPA).

Shannon McGriff started her career as Director of Operations for Choice Energy, later joined Unified Energy, served as Prism Energy Solutions’ Director of Sales prior to launching her own consulting firm, McGriff Energy Consulting. Shannon provides C&I consumers with market insight and helps them formulate effective procurement strategies. During her career she has developed a dynamic portfolio of consulting experience in multifamily, commercial real estate and retail, among other sectors in the competitive markets.

Shannon earned her BS from Texas A&M University in College Station, Texas.




Huston Able is Executive Vice President at Choice Energy Services, a strategic energy consulting source that leverages its access through wholesale markets to offer a competitive edge to his clients. He offices at Choice’s headquarters in Houston, Texas and has been with the company since 2003. He has held positions as Account Manager, Director of Sales, Partner and Vice President of Sales.

Huston provides ongoing power solutions to large commercial and industrial businesses and has been one of the top producers at Choice for last 10 years. More specifically, he specializes in management, planning, reporting, quota setting and sales process optimization.

With his 14 years of industry experience, Huston has brought a wealth of knowledge to Choice and hopes to carry that over to TEPA. He has been involved since TEPA’s inception eventually serving as committee chair from 2013-2016 and on the national board and Vice President in 2017.




Perry Ruthven is the Managing Director of Priority Power Management (PPM) in Houston, Texas. Drawing from a career that has cut across multiple industries including Energy, Technology, Logistics, Banking, and Insurance, Perry brings a wealth of knowledge and market experience to lead PPM’s Houston Region.

Perry joined PPM from PARenergy Inc., an electricity brokerage and consultancy based in Houston, Texas. As founder and president of PARenergy, Mr. Ruthven built a successful business representing diverse clients in the chemical, healthcare, commercial real estate, food service and logistics industries.




Marilyn is a professional accountant, specializing in utility rate regulation and other financial and policy issues. She has worked for the finance departments of municipal governments regulating electric, gas and water utilities and negotiating franchise agreements and contracts with business entities. She has also handled franchise fee and tax compliance issues. She has served as an expert witness in local, state and federal proceedings and presented testimony before the State Legislature of Texas.

Marilyn has worked with clients from the public and private sector on a variety of projects ranging from franchise fee reviews and negotiations to applying the Federal Communications Commission’s Rules for pole attachment rate calculations. She filed testimony at the Public Utility Commission of Texas (PUC) in many major rate cases and participated in various rule-making workshops. She also assisted in strategic planning for two large commercial companies considering entry into the deregulated electric markets.




David has more than 25 years in the energy industry with a proven track record of delivering innovative solutions for competitive electricity and natural gas consumers across the North American and European restructured markets. Most recently, David co-founded Prism Energy Solutions, an energy consultancy for commercial natural gas and electricity consumers.

In addition, David co-founded and is President of Cavallo Energy Texas, a wholesale power company. Prior to forming his own company, David was Senior Vice President for Reliant Energy, where since 2001 he led the commercial and industrial sales and marketing division before joining SaveOnEnergy in 2009. Before joining Reliant in 1998, David rose through positions of increasing responsibility at Conoco Philips, including Director of Natural Gas Trading and Marketing.




As an at-large board member, Scott provides guidance and insight related to TEPA matters. Since the inception of the organization, he has held repeat positions as Chair of the New Membership Committee, Executive Committee Member, as well as Vice President. His past professional experiences have provided Scott with a unique perspective on municipal utilities, rural electric cooperatives and investor-owned utilities. He uses his expertise to contribute to the ongoing development of TEPA.

Scott currently works at Good Energy, L.P. where he is responsible for company oversight and leading Good Energy’s sales and operations in North America. For over 18 years, he has worked in the sales, marketing and utility industry holding progressive positions, such as Key Account Manager, Business Analyst, Manager of Marketing, Vice President of Sales and Managing Partner. His leadership experience includes employment with established utilities and progressive start-up’s, such as City Public.

Service (San Antonio, TX), Choctawhatchee Electric Cooperative (DeFuniak Springs, FL), Mainstreet Networks (Silicon Valley, CA), Reliant Energy (Houston, TX) and Good Energy, L.P. (New York, NY).





Director and General Manager, Schneider Electric
Past President – 2012 Texas Electricity Professionals Association (TEPA)

Paul has been involved with TEPA since its inception and continues to share his expertise to further the mission of TEPA. He served as the 2012 President of the organization, working primarily to increase the value of membership to the supplier community in TEPA. Paul also previously served as Chair on the Discipline Committee (now Standards and Compliance) for three years to help enforce a code of conduct in the Texas market through elevating ethical standards of TEPA’s membership.

For 15 years, Paul has worked at Schneider Electric (formerly PoCo Energy Group and then Summit Energy) as a sales associate, client energy manager and director for the company. He currently also serves as the General Manager for the Schneider office in Lancaster, Texas. In this role, he is responsible for managing multiple accounts as well as managing the Lancaster team.

Having been involved in deregulation since the market open in Texas in 2002, Paul has a comprehensive understanding of the energy industry. Paul holds a CEP certification from TEPA. Paul’s other industry involvements include his participation in IREM. Since joining IREM, he has served on the IREM Friends Committee as well as the Chair of Outreach Committee in 2007.

Paul and his wife, Susan, have been married since 1987 and have two wonderful children. Micah Paul is 12 and Eliana is 7. He is also very involved in his church, serving as Elder since 1994.