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Matthew is a Tucson-based clean-tech entrepreneur with over 20 years of experience in corporate strategy, project development, global EPC partnerships, business process design and implementation, and international economics in both the public and private sectors. His track record spans a range of industries, including: Renewable Energy, Crude Oil, Natural Gas, Mining, Chemicals, and Financial Services. Through his work experience, Matthew has developed a keen ability to evaluate and solve complex project development situations and establish creative and effective business models and technical solutions.



Over the past 25 years Kelly has led the development, engineering, construction and operations of over 8,000 MW of power generation, major transmission lines, pipelines and infrastructure assets in both developed and emerging markets. Prior to co-founding Grannus, Kelly was a senior executive at leading global energy companies leading the development, construction, and operations of utility scale waste to energy, biomass, solar, wind, combined cycle gas turbine, and clean coal. He is a graduate of the U.S. Navy Nuclear Power School and proudly served as a United States Navy submariner with service and citations during Desert Storm.



Corey has over 30 years of corporate management experience and has held President/CEO or Director positions in over 20 high-growth, high-tech companies from startups to publicly held companies. He has extensive experience in mergers and acquisitions, raising capital, managing global operations and expanding product lines. Corey holds a Bachelor of Science in Business from Oregon State University, where he graduated with Highest Honors.

Legal Counsel


Nancy has over 30 years of experience in the development and financing of large-scale energy and other infrastructure projects globally. She’s experienced in all aspects of project development and finance including joint venture arrangements and project company structures; power sales; fuel arrangements; transmission and interconnection agreements; construction contracts; operations, maintenance and management agreements; and asset acquisitions and divestitures. Nancy has worked on projects as diverse as the financing of the first “build-own-transfer” power plant in Turkey using multilateral and export credit financing to the construction contracts for the first new nuclear power plants in the U.S. in 30 years.

Bertrand Deleuse

Bertrand is Managing Partner of EarthEnergy Partners, LLC (“EarthEnergy”) which serves in an affiliate and joint-development role to the company to source and develop clean energy projects internationally that are a fit for Grannus’ market focus. EarthEnergy is a New York City based financial and strategic advisory firm partnering with innovative ventures, project developers and investment funds pursuing strategies in clean energy and sustainable environmental solutions. Bertrand is 25-year finance veteran with a global track record in investment banking, venture growth, renewable energy, and social impact. Bertrand has advised and partnered on over one hundred investment and transactions totaling $16 billion in North America, Latin America, Asia and Europe, working with leading Fortune 500 companies, private equity funds, governments, and financial institutions.