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Pattern Energy

Hunter Armistead

Chief Executive Officer

Mr. Armistead serves as the Chief Executive Officer of Pattern Energy. He co-founded Pattern Energy with Mike Garland in 2009. Mr. Armistead oversees all aspects of Pattern, with a special focus on strategy, growth, capital formation, and company culture.

Previously, Mr. Armistead served as Pattern’s Chief Development Officer where he had the responsibility for all development and origination activities and had broad responsibility for running the Business Development day-to-day business. He led all global business development, including construction, engineering, and major equipment procurement.

Prior to joining Pattern Energy, Mr. Armistead spent 10 years overseeing Babcock & Brown’s North American renewable energy business, including development, construction, and operations. In previous roles, he led financing efforts for Edison Mission Energy and developed multiple facilities for Conoco. Mr. Armistead has a Bachelor of Science in electrical engineering from Rice University. He is based out of the Houston office.

Daniel Elkort

Chief Legal Officer

Daniel Elkort has been with Pattern Energy since 2013, first as Executive Vice President and General Counsel and now in his role of Executive Vice President and Chief Legal Officer. He also is responsible for Pattern Energy’s Project Finance activities.

Daniel holds a bachelor’s degree from the University of California, Berkeley and a law degree from Harvard University. He is based in San Francisco.

Esben Pedersen

Chief Financial Officer

Mr. Pedersen is the Chief Financial Officer of Pattern Energy. Mr. Pedersen is responsible for executing capital strategy, corporate development, financial reporting, administration, and treasury activities. With over 20 years of experience, Mr. Pedersen has been involved in various levels of investment oversight and management across the energy sector.

Prior to joining Pattern Energy, Mr. Pedersen worked for Babcock & Brown, where he focused on the origination and execution of investments in the energy sector. Before that, he worked as Manager for Enron and Senior Director for AEI, serving around the world in numerous corporate development and origination roles. Mr. Pedersen received his bachelor’s degree in Business from Stetson University and holds a master’s degree in International Economics from John Hopkins University. He is also a certified Chartered Financial Analyst.

Cary Kottler

Chief Development Officer

Mr. Kottler serves as the Chief Development Officer of Pattern Energy. In this role, he oversees Pattern’s business development activities, encompassing the wind, solar, transmission, storage and green fuels sectors. These efforts include the creation and evaluation of new growth opportunities as well as advancing Pattern’s development pipeline through all phases of development, commercialization and into construction. 

Prior to joining Pattern, Mr. Kottler served as executive vice president of Clean Line Energy. He held a number of roles at Clean Line across the development, commercial and legal sectors, with responsibilities encompassing project development, state and federal permitting processes, FERC matters, corporate compliance, financing arrangements and commercial agreements.

Previously, Mr. Kottler was a corporate attorney for Vinson & Elkins, focusing on mergers and acquisitions, project development and private equity investments in the energy and power sector, both domestically and internationally.

Andre Walker

SVP, Power Operations

Andre Walker serves as Senior Vice President of Power Operations for Pattern Energy. In this role, he is responsible for the safe and reliable operations of Pattern’s global fleet of renewable energy facilities and oversees the full range of operational disciplines, including health & safety teams, field operations, engineering, asset management, energy management, regulatory compliance, supply chain, and environmental.

Prior to joining Pattern, Andre also held a variety of leadership roles over 16 years with Calpine Corporation including Vice President of Asset Management, Vice President of Supply Chain, and Vice President of Investor Relations in addition to several other operational and commercial roles. 

 Andre has over 25 years of experience in the power and energy industries including his experiences at Air Liquide America Corporation and Praxair Inc.  Andre earned his Bachelor of Science degree in Chemical Engineering from the University of Texas at Austin. He is based in Houston, Texas.

Frank Davis

AVP, Green Fuels and Canada Country Head

Sarah Webster

SVP, External Affairs & Market Development

Sarah Webster is Senior Vice President of External Affairs & Market Development for Pattern Energy. She oversees Pattern’s Government Relations, Corporate Communications, Stakeholder Management and Sustainability efforts.

Sarah has been with Pattern Energy since 2013 and enjoys building relationships with company stakeholders and serving with her team as the “diplomatic core” for the company. She has worked in the energy sector for over 20 years at companies such as InterGen, Shell and Wind Capital Group and has also worked as a music critic for the Houston Press.

Deborah McAdam

SVP, People & Culture and Workplace Operations & Experience

Deborah McAdam is Senior Vice President of People & Culture and Workplace Operations & Experience for Pattern Energy. In her role, which she has held since 2017, Deborah focuses on building consensus around processes and procedures, with the goal of providing cost-effective enhancements of organizational culture. Her career has spanned renewable energy and consulting industries, where she has led growing, cutting-edge organizations to new phases of their life cycle.

A native San Franciscan, Deborah holds a bachelor’s degree and a master’s in business administration from the University of San Francisco. In addition to earning the “Woman of the Year 2010/2011” award from the National Association of Professional Women, Deborah holds certifications in project management and employee relations.

Justin Sabrsula

VP, Fundamentals and New Markets

Justin Sabrsula is Vice President of Fundamentals and New Markets for Pattern Energy. He provides independent analysis and advice on the key fundamental drivers impacting Pattern Energy’s markets and identifies growth opportunities. He is also responsible for corporate strategy planning.

Prior to joining Pattern Energy, Justin served as Head of Strategy for GE Renewable Energy’s Onshore Wind division where he led global business and product strategy for equipment and services. He has also held a variety of strategy, product management and marketing leadership roles across GE’s wind, energy storage and solar divisions. He values creating opportunities and driving strategy using rigorous research and analysis, to help elevate company performance.

Justin holds a bachelor’s degree in Public Policy from Duke University and two master’s degrees, in Urban Planning and Business Administration, from The University of North Carolina at Chapel Hill.

George Hardie

VP, Business Development

George Hardie is the Vice President of Business Development for North America. With more than 20 years of experience in the wind industry, he has been responsible for the development or acquisition of more than a dozen projects in the United States, United Kingdom, and Central America, totaling more than 2,000 MW.

At Pattern, George has been the lead developer or originator of many of the company’s largest projects including Hatchet Ridge and Spring Valley. He has also led the acquisition of several projects including two in Canada’s Ontario Province (Armow and K2) totaling 450 MW, as well as the 300 MW Finavera Portfolio of wind projects in British Columbia and, most recently, the acquisition of the 200 MW Logan’s Gap Project in Texas and the 150 MW Fowler Ridge IV project in Indiana.

George founded his first wind company, International Wind Companies, in 1991. He and his investors sold the company to the Zilkha family in 1998, which was subsequently renamed Zilkha Renewable Energy. George stayed on as President and CEO for almost four years, establishing the team that made Zilkha one of the fastest-growing renewable energy companies in the world and paving the way for Goldman Sachs to acquire the company two years later. In 2003, George left Zilkha to start a new company, G3 Energy, which was subsequently acquired by Babcock & Brown in late 2005. G3 Energy projects that were successfully financed, constructed and operated include the 38 MW Buena Vista Repowering Project in California’s Altamont Pass and the 150 MW Spring Valley in Nevada, which was awarded the 2012 Powergen Magazine U.S. Wind Project of the Year.

Jenn Ritchey

AVP, Business Development

Jenn Ritchey is AVP of Development for Pattern Energy leading her team on solar, wind, storage, and transmission development across the US; she has successfully developed more than 1 GW of innovative renewable opportunities.

Jenn has 10 years of experience developing utility-scale renewables, including five years at Pattern Energy developing utility-scale renewables across the US, forming innovative partnerships, evaluating new commercial opportunities, and leading development M&A transactions.  Prior to her time at Pattern, she spent five years at Recurrent Energy developing utility-scale solar.  In her prior role, she led more than 400 MW of projects through development and financial close that are now operating in California and led the expansion of strategy on the East Coast.

Jenn earned her bachelor’s degree in Environmental Science from the University of North Carolina at Chapel Hill, and her Master of Science and MBA from the University of Michigan. She is based in Oakland, Calif.

Monica Opderbeck

AVP, Origination & Power Marketing, Business Development

Ms. Opderbeck serves as the Associate Vice President of Origination & Power Marketing within Pattern’s North American Business Development group. She and her team are responsible for the commercial leadership of originating, structuring, negotiating, and executing long-term structured revenue contracts, other energy-related procurement contracts, and asset sale transactions for Pattern Energy’s development pipeline and operating assets.

Prior to joining Pattern Energy, Ms. Opderbeck served as a Director of the Renewable Energy and Environmental Finance portfolio at Wells Fargo. In her time at Wells Fargo, she spent a total of 12 years in energy finance and capital markets. While she held several roles at Wells Fargo, from commodity derivatives to project finance, most of her time was focused on deploying capital for the bank’s renewable energy tax equity investments where she successfully led some of the largest tax equity transactions in the industry.

Ms. Opderbeck earned a Bachelor of Arts degree in Mathematics from the University of California, Santa Cruz. She and her family reside in the San Francisco bay area.