Donovan Energy is at the forefront of clean energy technology. We empower business leaders to redefine their approach to energy with solutions that simultaneously provide superior returns and increase the underlying value of their assets. Our solutions more than pay for themselves by decreasing energy costs, simplifying project financing, reducing energy usage and increasing production of renewable energy. Let us show you how with a no-cost assessment.




Tim Donovan

Partner & Chief Executive Officer

Tim Donovan has dedicated his career to energy management and optimization. His expertise spans financial modeling, investment strategy, budget development, planning and corporate structure. Tim has played a key role in several clean energy and sustainability industry "firsts" including the first net-zero energy aviation facility (Hangar 25 at Burbank International Airport), the first LEED-rated gas station (BP's Helios House) and the redevelopment of several buildings incorporating sustainability and energy concepts.


Andy Holzhauser

Partner & Chief Financial Officer

With roots in both the finance industry and energy industry, Andy Holzhauser focuses on developing innovative financing solutions for clean energy projects, procurement, market analysis, education and advocacy for solar energy, energy policy, and program development. As founder and former CEO of the Greater Cincinnati Energy Alliance (GCEA), he led the non-profit’s investment of more than $50 million in energy efficiency and renewable energy projects in residential and commercial markets.

Nachy Kanfer

Partner & Chief Strategy Officer

As the head of Donovan Energy’s consulting practice, Nachy Kanfer sees energy as a strategic asset, not an invisible cost. He works with clients to align their energy choices with their growth strategies, all while reducing exposure and risk. Nachy also leads Donovan’s electricity procurement business, helping customers in deregulated jurisdictions become more competitive by securing favorable terms and rates for their energy usage. ​


Jeff Martin

Partner & Chief Operating Officer

As a partner and large-scale energy project leader at Donovan Energy, Jeff Martin leverages his experience in construction management, project design, scheduling, permitting, and zoning to guide clients through complex energy projects. From developing and retrofitting energy efficient buildings to new technology, Jeff creates and manages plans that help organizations pay less for energy, be more efficient as they use energy, and ultimately, generate renewable energy of their own.


Andrew Ritch

Partner & Chief Revenue Officer

Andrew oversees the company’s sales and marketing efforts. Prior to joining Donovan Energy, he spent a number of years at Duke Energy in a variety of roles within the company’s supply chain, finance, investor relations and strategy teams. Most recently, he held responsibility for devising and executing strategy for renewable energy assets within the company’s midwest regulated businesses (Duke Energy Ohio, Kentucky and Indiana). Previously, he was an Associate at Brown Brothers Harriman & Co. where he held responsibility for private banking, asset custody and investment advisory relationships in the Middle East. Andrew received his B.A. from Colby College and his M.B.A. from Babson’s F.W. Olin Graduate School of Business. Andrew is a past board member of The Greater Cincinnati Energy Alliance, The Summit Country Day School and The University Club of Cincinnati. Currently, he is a trustee of The Turner Farm Preservation Foundation and the Meshewa Farm Foundation.

Emma Middleton

Sales Support Representative

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Natalie O'Donnell

Senior Accountant



As Donovan Energy’s Senior Accountant, Natalie is responsible for ensuring that the company’s daily
accounting functions run accurately and effectively. Graduating from Cincinnati State in 2008 with an
Associates Degree in Accounting, she brings over a decade of experience to Donovan Energy. Natalie is
very passionate about the environment and honored to be part of a team that provides clean and
efficient energy to our clients.

Mike Petzelt 

Sales Executive

Susana Tolentino

Finance Specialist

As Donovan Energy’s Finance Specialist, Susana has a robust understanding of our most complex finance and consulting offerings. In tandem with our clients, she facilitates the use of PACE finance as well as state and federal tax incentives in financing clean energy projects. Susana also works with our consulting clients to create custom financial models for new business ideas surrounding the clean energy marketplace. Prior to joining Donovan Energy, Susana worked as Director of Mixed-Use Development for Urban Sites and Development Officer for 3CDC. She has an Associate of Arts and Sciences from New York University and a Bachelor of Science and Liberal Arts from Xavier University. Susana is passionate about the great outdoors and believes in transforming our economy to run on clean energy to preserve the Earth for future generations.


Chief Canine Officer

Scott Batchelder

Senior Sales Support Representative

As Donovan Energy’s sales support representative, Scott assists with the development and implementation of projects from start to finish. Drawing upon his strong communication skills obtained from his sales experience at REI, Scott ensures client satisfaction. He has expertise in cultivating strong working relationships and gives all customers the individualized attention they deserve. Originally from Plano, TX, Scott moved to Cincinnati in 2013. He obtained a Bachelor of Music from Indiana University and works creatively as a musician. He is a member of the Lexington Philharmonic Orchestra and plays as a substitute trumpeter with various orchestras in the Tristate area.

Lynette Champegny

Program Manager

Brad Denham 

Sales Executive

Brad Denham is a seasoned sales executive with a diverse background in selling both products and services, most recently power systems engineering across various business segments including utilities, municipalities, universities, hospitals and industrial facilities. With over 19 years of sales experience, he has a unique and well-rounded perspective on selling. Brad is passionate about Donovan’s mission of helping our clients reduce energy use and save money, resulting in a better world. He is a graduate of Georgetown College with a BA in Political Science and earned his Master of Public Administration from Northern KY University. He and his wife Dawn live in Fort Mitchell, KY with their two adventurous boys, Kye (13) and Jess (10) and enjoy spending family time going to baseball games, camping and playing outdoors.

Tim Driscoll

Vice President of Sales

Tim Driscoll brings more than 20 years of executive experience in energy efficiency and telecommunications to Donovan Energy. He found his passion for clean energy while leading commercial sales of energy-efficient lighting (primarily LED lighting) at Richards Electric Supply, one of Cincinnati’s Top 100 Private Companies. Prior to joining the energy industry, Tim served as regional president of Verizon Wireless. He also has acted as head coach for the Xavier University Men’s Hockey team for the past eight years. Tim holds a Bachelor of Arts and a Masters of Business Administration from the University of Dayton.

Alex Hurley

Policy & Data Analyst

As Policy and Data Analyst, Hurley’s role encompasses a duality of working with existing external clients on the consulting side, as well as supporting the internal team from a data analytics standpoint. Prior to joining Donovan, Hurley worked at the United States Environmental Protection Agency and a start-up venture focusing on the smart city space. Hurley received a Bachelor of Arts in Environmental Studies at Centre College in Kentucky and a Master’s Degree in Environmental Science at Ohio University. Hurley’s passion lies in making a positive social impact through sustainability efforts.


Donovan Energy is a clean energy development and finance company that approaches energy in new ways to help you reduce energy use and save money.


31 East 12th Street

Suite 2E

Cincinnati, OH  45202

513. 536. 6878 


© Donovan Energy, LLC ©2020   |    Site designed by Ellie Brands

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