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Executive in Residence

Executive in Residence

Gaining A View From the Top

The GEM Executive in Residence program creates a collaborative learning environment providing GEM students with access to the deep knowledge and expertise that energy executives have gained throughout their careers. The executives share with students the decision-making processes energy leaders utilize not only to run an organization but also to identify high-potential performers.  From this program, GEM students gain valuable industry insight as well as the knowledge and skills necessary to conduct positive and impactful interactions with executives across the spectrum. No other energy-focused graduate business program has such a robust and well-developed integration of active executive participation with students’ learning.  

GEM students have the opportunity to engage with the executives in a multitude of formats including in-person class lectures, individual meetings, lunches and other social events. The program is designed to help students develop meaningful relationships with industry leaders to help guide their career decisions as well as build students’ own “executive presence.”  

In addition, the executives contribute to students’ learning during the online session of the quarter through weekly discussion boards as well as acting as special project advisors.  During a students’ tenure in the GEM Program, they will have access to seven different executives.  

The executives spend six months with the GEM Program or two quarters.  GEM strives to have balanced representation of seasoned leaders across all sectors of the industry to provide students with a well-rounded education.  This comprehensive access builds GEM students’ ability to discern the leadership skills and attributes need to lead the energy industry into the future. 

Current and Past GEM Executives

William (Bill) Waldheim​
Director, Board Member, Enbridge Energy Company, Inc.; Retired 
President of DCP Midstream Partners 
April 2016 - October 2016

Bill Waldheim is the former president and board ​member of DCP Midstream Partners, LP (DPM) and has over 35 years’ experience in the energy industry. While at DPM Bill was responsible for expanding the partnership’s asset base and earnings as well interacting with DPM’s stakeholders in the banking and investment community.

Prior to joining DPM, Bill was the president of the Marketing and Logistics business unit for DCP Midstream, LLC where he was responsible for marketing over 6Bcf/d of natural gas, 450mbpd of NGLs and 20mbpd of crude oil and was a leading member of DCP’s Risk Management Committee. While head of the M&L business unit, Bill lead the effort to expand DCP’s NGL infrastructure under a $2.25 Billion pipeline expansion program.

Prior to this role from 2007-2009, Bill was vice president of DCP’s Gathering and Processing business unit managing commercial and operational aspects for the Northern and Mid Continent commercial areas. Prior to 2007, Bill held numerous leadership positions at DCP Midstream including VP of G&P Commercial and VP of Marketing and Logistics. And prior to joining DCP in 1999, Bill served in various leadership roles at Union Pacific Resources.

Bill attended the University of Arizona where he earned a bachelor’s of science in public accountancy, was formerly a CPA, and also earned an advanced degree from Harvard’s Advanced Management Program. He has served on the boards of Junior Achievement-Rocky Mountain Inc. and the Colorado Oil & Gas Association, and is a former board member of the Propane Education Research Council. Bill was born and raised in Milwaukee, is married to Kathryn and has two sons Chris and Scott. ​
David Ellerbroek​
Senior Vice President of AECOM 
July 2016 – January 2016

David Ellerbroek is a Senior Vice President and serves as the Regional Business Line Leader for the Environmental Business Line for AECOM. Previously, he served as Area Manager for AECOM in Denver during the historic merger of AECOM and URS. He is responsible for strategic coordination of environmental services for AECOM offices throughout the Gulf Southwest Region with approximately 800 staff. AECOM has business lines focusing on water, transportation, buildings and places, environment and natural resources. Dave joined AECOM from MWH Global where he was the Global Market Sector Leader for Upstream Oil and Gas. Dave brings over 25 years of experience in the engineering business, across several market sectors including infrastructure, water, oil & gas and mining.

He enjoys working with clients on multidisciplinary projects and has a bachelor’s degree in Geophysics from the University of Colorado, MS in Environmental Engineering from Colorado School of Mines and a PhD in Environmental Engineering from Colorado State University. He spent two years in Australia working as a research scientist for CSIRO’s Mine Remediation and Reclamation Program evaluating water and chemical movement in the mining environment. ​


Teresa Madden​
Former CFO of Xcel Energy 
October 2016 – April 2017

Accomplished, results-oriented, highly-respected leader of all finance functions as CFO, with over 30 years of experience at a Fortune 300 regulated electric and gas utility. Significant corporate governance experience working with the Board, including Audit and Finance Committees. Qualified to serve on audit committees as a financial expert, with extensive experience in risk, strategy, and financial areas. Strong strategic, communications and consensus-building skills.

Teresa Madden recently retired as the executive vice president and chief financial officer of Xcel Energy. She led the financial function, which includes the controller's office, treasury, tax, audit, financial performance and controls, risk management, investor relations, and business development. Previously she was vice president and controller and before that, vice president of finance for Customer and Field Operations.

Madden started her career with the company in 1979 and held a variety of positions with Public Service Company of Colorado and served as corporate controller of New Century Energies.

She earned a Bachelor of Science degree in accounting at Colorado State University and a Master of Business Administration degree at Regis University.

Madden is a member of the Colorado Society of Certified Public Accountants and the American Institute of Certified Public Accountants.

She is a current member of the board of trustees of the Public Education & Business Coalition in Denver, Colo., and a former member of the board of directors of the YWCA of Boulder, Colo.


Peter Duprey​

Former President & CEO of Broadwind Energy, Inc.
Residence:October - January 2018

Peter Duprey is the former President & CEO of Broadwind Energy, Inc. a publicly traded wind tower and gearing manufacturer in the Midwest United States.  Prior to joining Broadwind, Peter was the President & CEO of Acciona Energy North America, Inc. a developer of wind and solar energy projects and manufacturer of wind turbines.  

Mr. Duprey started his renewable energy career as the Business Development Leader of GE Energy, where he led the purchase of Enron’s wind business for GE.  He was also the General Manager of Marketing for GE Wind shortly after it was acquired and focused on developing new markets and the next turbine configuration for the business.

Duprey started his career with PriceWaterhouse with a client focus in financial services and M&A. He then moved to start up Eastman Kodak Credit Corp. which Eastman Kodak later sold to General Electric.  He also held senior positions in an internet start-up and in M&A and quality positions for GE Capital.

Peter earned a Bachelor of Science in Accounting from Clarkson University and a Master of Business Administration from the University of Rochester Simon Business School.  He is also a former certified public accountant and a former Board member of the American Wind Energy Association.

Peter is currently a renewable energy consultant and an active angel investor in start-up companies.  He is based in Telluride, Colorado.

John Mork​

President and CEO of Energy Corporation of America
Residence: January - June 2018

John Mork, alongside his wife Julie, founded Energy Corporation of America (ECA) in 1972 after serving in various capacities at Union Oil Company (Unocal).  Under his leadership, ECA grew from a small conventional Appalachian oil and gas producer to a world leader in unconventional shale development.  He is a past Director of the Independent Petroleum Association of America, and the Independent Oil and Gas Association of West Virginia.  

Mr. Mork was a member of and held various positions with the Young Presidents' Organization.  He is currently a member of the Chief Executives Organization, the World Presidents Organization, the University of Southern California’s Engineering School Board of Councilors and Chairman of the University of Southern California’s Board of Trustees.  

Mork holds Bachelor of Science and Master of Science Degrees in Petroleum Engineering from the University of Southern California, and a Doctorate in Humane Letters from USC.  He is married to Julie Mork, co-founder of ECA. The Morks have two children: Kyle Mork, current President and CEO of Energy Corporation of America, and Alison Hansen, educator and homemaker.

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Julie Blunden​
Former SVP and Chief Strategy Officer at SunEdison
Residence: January- July 2017

Julie Blunden serves as Board Chair CalCEF Catalyst and Board Member of CalCEF Ventures as well as founder of Julie Blunden Consulting. She works with boards, investors and allies to accelerate a clean energy future using her deep experience in strategy, market design and development, financial markets and communications. 

Ms. Blunden has served in executive roles at SunPower, SunEdison, Green Mountain Energy, and KEMA Xenergy as well as Chief Executive Officer, President and Director of ClimateWorks Foundation. She draws on her three decades of experience growing companies and markets in the power industry to support her clients and friends.

Gysle Shellum​
Retired Energy Executive PDC Energy
Residence:July-October 2017​

Gysle Shellum has over 30 years’ experience in senior finance roles in both public and private energy companies. He has broad expertise in management, capital markets, A & D and strategic planning. Most recently, he served 8 years as CFO of PDC Energy, Inc. in Denver, Colorado until his retirement in June 2016. Prior to PDC, he served as VP Finance at Crosstex Energy, LP (now EnLink Midstream, LLC) in Dallas, Texas. 

 Mr. Shellum is a member of the Board of Directors at Chaparral Energy in Oklahoma City; he is an at-large director on the board of the Independent Petroleum Association of America and serves on the Advisory Council of the University of Colorado, Denver, Global Energy Management Graduate Program. 

Mr. Shellum began his career in public accounting after graduating from the University of Texas at Arlington with a BBA in accounting.

For more information about this program contact Cathy Steffek, GEM Director of External Affairs, or 303-315-8061.

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