NAGF Leadership Team

The NAGF Leadership Team, including the Board Members and Officers, are comprised of volunteers from member companies. The NAGF is governed by a Board of Directors who have overall responsibility for both the fiduciary accountability, Strategic Direction and oversight of the day-to-day activities of the organization. The NAGF Officers run the day-today business of the Forum and represent the Forum within the industry.

The NAGF Executive Coordinator  is responsible for the day-to-day administration of the NAGF and strategic activities that support the NAGF Business Plan.

David McCammon-15-2.jpg

Chairman of the Board

David McCammon

David joined American Electric Power in 1986. Dave is currently the Director of Plant Engineering and Compliance Programs responsible for AEP’s Generation NERC compliance activities, Region Engineering organization and United Sciences Testing Inc., an emissions testing company. 

Dave was previously Director of Generation Electrical Engineering responsible for AEP’s generators, large power transformers, power distribution, protection & control, distributed control, generation cyber security, and reliability programs. He has held various Generation engineering and design positions. 

Dave is currently Chairman of the Board of the North American Generator Forum (NAGF). He holds a Bachelor of Science degree in Electrical Engineering from Rose-Hulman Institute of Technology and a Master of Business Administration degree from Capital University. Dave is licensed Professional Engineer. 


Board Member

Ken Stenroos

Ken Stenroos is senior director, engineering & technical services, in the Power Generation Division of NextEra Energy, Inc. He is accountable for providing the engineering and technical support for generating equipment assets for the company’s competitive generation subsidiary, NextEra Energy Resources, and its rate-regulated electric utility, Florida Power & Light Company, including the designated equipment of the nuclear fleet. Mr. Stenroos has held this position since February 2014.

Mr. Stenroos joined FPL in 1986 on the Power Delivery team as a service planner. After holding a variety of other positions within engineering and power plant management, he became senior director generating equipment, technical services for the Power Generation Division. He has also served as production manager, Port Everglades Plant for FPL, as well as Technical Manager for Broward Generation. In that role, he was accountable for the technical support of Port Everglades Plant, Lauderdale Plant, and the three Gas Turbine Power Park sites.

Mr. Stenroos attended the University of Florida for a Bachelor of Science in Electrical Engineering, and is a registered Professional Engineer in the State of Florida since 1992. He is, or has been, a member of the IEEE Power Engineering Society, IEEE Synchronous Machinery Sub-Committee, and IEEE Standards Association. He is a dedicated electronics hobbyist, and repairs broken electrical and electronics items for family and friends as recreation. Mr. Stenroos is an active supporter of the United Way.

Kevin Gresham_04.jpg

Kevin Gresham

Board Member

Kevin Gresham, VP Government Relations & External Affairs for E.ON North America, LLC, has more than 30 years of electric industry experience.  Mr. Gresham directs E.ON’s governmental relations, federal and state regulatory activities, and public affairs across the North America.  He recently served on the Department of Commerce’s Renewable Energy & Energy Efficiency Advisory Committee and serves on the ERCOT Board of Directors representing the Independent Generator Segment.  In addition, he serves as Chair of the Solar Energy Industries Association’s Federal Affairs Committee, on The Wind Coalition’s Executive Committee and participates in the American Wind Energy Association’s (AWEA) legislative, public affairs and transmission committees.  Gresham also serves on the North American Generator Forum Board of Directors.

Gresham has been very active in the design of the competitive ERCOT market since the late 1990s including the current ERCOT nodal market.  Besides serving on the Board of Directors, he also served on the ERCOT Technical Advisory Committee and chaired the ERCOT Protocol Revision Subcommittee for 9 years.  

Prior to joining E.ON, he was Director of RTO Policy for RRI Energy where he was involved in PJM, MISO, California and the West.  Mr. Gresham has an MBA from Houston Baptist University and a Bachelor’s Degree in Mass Communications from Illinois State University.


Leigh Mulholland

Board Member

Leigh Mulholland is currently the Chief Compliance Officer for Capital Power Corporation.  Leigh Mulholland joined Capital Power in 2007 and was appointed Chief Compliance Officer in September 2015, where she oversees and manages the compliance function within Capital Power, including developing the annual compliance program and maintaining current knowledge of regulations and laws applicable to the electricity sector in the jurisdictions we operate.  In this role, Leigh ensures that the company and employees comply with regulatory requirements and internal policies and procedures.  She also interfaces with regulators on a regular basis.  

Prior to her current position, Leigh was Vice President, Corporate Strategy & Planning and was responsible for Capital Power’s Corporate Long Term Plan and the Annual Business Planning process.  Leigh also led the Alberta Coal Commercial Services & Energy Management Operations (Settlements) Teams as well as some Business Development activity.  Previously, Leigh served as Senior Manager, Valuations, where she was responsible for leading the financial analytics on acquisition, divestiture and business development activity.  She managed Capital Power’s due diligence process on M&A activity until 2017.  

Prior to joining Capital Power, Leigh worked in the investment management industry at The Northern Trust Company, PIMCO and Capital Guardian Trust Company as well as for HA-International, a joint venture between Hüttenes Albertus and Borden Chemicals.  She has 20+ years of work experience in a variety of roles, including finance, accounting, client relations, management, marketing and analytics. Leigh holds a Certified Public Accountant designation (CPA, Illinois), a Master of Science in Risk Management from New York University’s Stern business school, a Master of Science in Accounting from the University of Illinois, a Master of Arts in Economics from Texas Christian University and a Bachelor of Arts in Economics & Political Science, also from Texas Christian University.  

Gabriel photo MEDIUM (002).jpg

Mike Gabriel

Board Member

Mike has 29 years of power generation experience and has held positions of increasing responsibility in the U.S. Navy as a submarine officer, at General Electric in Field Service and Product Service divisions and with EthosEnergy. His career has ranged from operations and maintenance of nuclear powered submarines, technical instructor, control system commissioning engineer, plant assessments, Monitoring & Diagnostics Center manager, Product Line Manager for fuel system conversions and NERC compliance. Mike was previously the chair of the NAGF’s Peer Review Working Group and the co-chair of the NAGF’s Security Practices Working Group. He has previously served on the NAGF’s Advisory Committee, as the Secretary. and as the Deputy Chief Operating Officer.  He holds a Bachelor of Science in Computer Science from The United States Naval Academy and a MBA from Kennesaw State University. Mike is also a Master Training Specialist and a Six Sigma Green Belt.

Allen Schriver.jpg

Allen Schriver

Chief Operating Officer

Allen D. Schriver (NAGF COO) joined NextEra Energy, Inc. in 2008. Allen is currently the Senior Manager – NERC Reliability Compliance in the Compliance and Responsibility Organization. With over 30 years of experience in the industry, he has held positions of operations superintendent and plant manager at various large hydroelectric plants where he was accountable for the operation and maintenance of both plant generation and bulk power transmission facilities.  Allen is a member of the NERC Operating Committee, Event Analysis Subcommittee, the NERC inverter task force and various Regional Entity Committees. Allen is currently the Chief Operating Officer of the North American Generator Forum (NAGF).  He holds a Bachelor of Science in Electrical Engineering from The Pennsylvania State University and a Master of Science in Electrical and Computer Engineering from the University of Massachusetts.  Allen is also a licensed Professional Engineer and a Six Sigma Green Belt.

Heather Morgan_DSC0415.jpg

Heather Morgan

Deputy Chief Operating Officer

Heather Morgan is the Director of Regulatory Compliance for EDP Renewables where she oversees the compliance program for EDP Renewables’ North American fleet in the United States, Canada, and Mexico. In addition to this role, Heather serves as the Deputy Chief Operating Officer of the NAGF.  Heather is chair of the NAGF Standards Review Team, a member of the SPP Reliability Compliance Working Group, and is a standard drafting team member Project 2016-02 – Modifications to CIP Standards. Prior to this, Heather served on the Advisory Committee for the NAGF and was the NAGF Secretary.  She also served as a member of the standard drafting teams for Project 2017-02 and Project 2016-EPR-01. Heather received her bachelor’s degree from Texas A&M University and her Masters of  Business Administration from Rice University. 

James R.jpg

James Rappach


Jim Rappach’s title is NERC Reliability Assurance Manager – Generation NERC Compliance.  Jim is responsible for all aspects of NERC Reliability Compliance for the American Electric Power Generation Business Unit.  This includes AEP’s fleet of approximately 26,000 MW of Fossil and Hydro, Nuclear, Solar, and Wind Generation.  Jim’s organization manages the strategic direction and reporting requirements to sustain compliance for the AEP Generator-Owner / Operator (GO/GOP) registered NERC functions for both the regulated and competitive businesses.

In addition to working in Regulatory Compliance for 11 years, Jim also has 13 years of diverse experience as an Engineering & Process Consultant for a multitude of industries, and has held positions from Project Manager, Senior Engineer, Startup Engineer, Controls Specialist, and Consultant for AEP as well as other fortune 500 companies such as Anheuser Busch, General Motors, The Scotts Company, and Ross Products.


He holds a Bachelor of Science degree in electrical engineering from The Ohio State University.  His specializations are in power systems as well as instrumentation and controls.

He is a registered professional engineer in the state of Ohio, and a Project Management Professional.

Head Shot Web-Greaff_Venona_GCPA_04.jpg

Venona Greaff


Venona oversees the NERC compliance program for Occidental Energy’s cogeneration fleet.  She has more than 30 years experience in the Energy sector with more than 15 years in power generation. Venona previously served on the Project 2010-1 PER-005-2 and Project 2007-06.2 PER-006-1 Standard Drafting Teams and is currently on Project 2019-06 Cold Weather.  In addition to her role as the NAGF  Secretary, Venona currently serves as the LSE/Marketing Sector Representative on the TexasRE MRC, the Large End Use Electricity Customer sector on NERC's MRC and RSTC, and represents the generation segment on the SERC Board Executive Committee.  She holds a Bachelor of Science degree in Cyber Security Policy and Management from the University of Maryland University College.


Wayne Sipperly

Executive Director

Wayne has more than 30 years of corporate, field, and consulting experience in the electric industry. His diverse experience spans engineering, operations, maintenance, marketing, and risk management. In his current role as the NAGF Executive Director, Mr. Sipperly functions as the Chief Administrator responsible for the day-to-day administration of the NAGF and strategic activities that support the NAGF Business Plan.


Prior to joining the NAGF, Mr. Sipperly worked for the New York Power Authority and held various leadership roles involving NERC Reliability Standards Compliance, Enterprise Risk Management, Energy Marketing, and Generator Control Systems. Mr. Sipperly received his MBA from Long Island University and a Bachelor of Science in Electrical Engineering Technology from Northeastern University.

Advisory Committee

The Advisory Committee advises the Board of Directors and Senior Officers for strategic oversight and supports the day-to-day activities of the Forum. Current Advisory Committee members include the following member company volunteers: 

Shivaz Chopra - New York Power Authority

Troy Dahlgren - NAES Corporation

Shannon Ferdinand - Capital Power

Blake Huddleston - ENGIE North America

Chip Humphrey - Dominion Energy Services

Brett Koelsch - Duke Energy

Richard Lutz - Ameren Missouri

Alison Mackellar - Exelon Generation

W. Dwayne Preston - Austin Energy

Alan Randolph - DTE Energy

William (Bill) Shultz - Southern Company

Steven Winsett - Entergy Power Generation