Executive Team

Due Diligence & Technical Services

Paul Plath, P.E.
President, Denver, Colorado

Paul Plath is well-known within the energy industry for his pragmatic approach and ability to solve problems, making him a recognized and trusted expert in due diligence for top-tier lenders, equity, and developers.  He has managed and performed due diligence and technical reviews to support the financing and acquisition of hundreds of electric power, energy, and industrial projects, including many focused on renewable power generation technologies. Moreover, Mr. Plath has spoken on and written numerous reports and papers on new and emerging technologies for electric power generation, energy conversion and storage. He specializes in assembling technical assessment teams to evaluate new technologies, processes and applications and his in-depth technology assessments have supported the financing of a number of first-of-a-kind projects.  Mr. Plath has a B.S. in Mechanical Engineering from the University of Colorado.

Paul Plath, E3 Consulting

Ginger Elbaum
Managing Director, Denver, Colorado

Ginger Elbaum is an E3 Project Manager as well as a member of E3’s Management Team. She has significant experience providing engineering, construction, and project management services related to power generation (including renewables), water reclamation, and industrial processes.  Ms. Elbaum’s primary focus includes wind, natural gas, coal, and transmission (including submarine) installations.   

Ms. Elbaum has served as the Project Manager for pre-financing, refinancing, and sale/acquisition projects, including 3.3 GW of wind projects.  As Project Manager Ms. Elbaum has interfaced with debt providers, equity providers, developers, and rating agencies.  Additionally, Ms. Elbaum has served as the Project Manager for projects that require government funding, bond financings that require an investment rating, as well as projects that have large bank groups. 

Ms. Elbaum has a strong background in project engineering and construction management.  Prior to joining E3, Ms. Elbaum served as a Project Engineer and Field Engineer on-site during power plant construction for Calpine Corporation.  During her tenure in construction, she was responsible for specifying and purchasing plant equipment for water treatment and power generation projects, managing major equipment vendor contracts, managing staff, managing construction crews (union and non-union) and schedules, writing specifications and scopes of work, resolving punch list issues.  She has managed relationships with City and County officials and site neighbors, managed the Architect/Engineer of Record, supported the Start-up and Operations groups during the commissioning phase, and was responsible for ensuring environmental compliance.  Building on this experience, at E3 Ms. Elbaum provides due diligence reviews, including contracts, constructability, costs, and schedule, related to the construction aspect of a variety of projects.  The experience gained from this diversity in her range of responsibilities has given her a good perspective for making decisions and evaluations as well as providing guidance related to power generation projects.  Ms. Elbaum has a B.S. in Mechanical Engineering from Texas A&M University in College Station, TX.

Ginger Elbaum, E3 Consulting

Albert Rettenmaier
Managing Director

Albert “Al” Rettenmaier is a Managing Director and E3’s Hydrogen, Oil, Gas, and Chemicals Practice Leader. Mr. Rettenmaier has 35 years of Engineering, Construction, and Procurement (EPC) experience for capital-intensive projects. He has an in-depth understanding of how to develop and successfully implement large capital projects internationally and domestically. His expertise in front-end project development is key to getting projects through final investment decisions and to financial close. He is currently working on projects in Green Hydrogen, Green Ammonia, Biofuels, Carbon Capture & Sequestration, Compressed Air Energy Storage, Biodegradable Plastics, Low Carbon Concrete, Oil & Gas Midstream, Solar, and Wind Repowering. Al has a B.S. in Chemical Engineering from the University of Kansas.

Al Rettenmaier, E3 Consulting

Vince Tummarello
Managing Director

Mr. Tummarello has extensive experience in power generation and electric transmission systems. As a managing director with E3 and E3’s Transmission Practice Lead, Mr. Tummarello oversees the management of E3’s New York-based office. In addition, he has both participated in and led a number of E3 projects involving technical, commercial, and regulatory aspects of power plant due diligence investigations, bio-mass project advisory services, and advisory services on operating power plants and district heating/cooling systems. He has significant experience in operations and maintenance, power plant engineering, fuel procurement, power marketing and environmental compliance. Prior to joining E3 Consulting, he served as the Division Vice President for Orange and Rockland Utilities, Inc., Mr. Tummarello was responsible for the electric generation business unit, including all plant operations and maintenance activities, and the associated engineering, construction, fuel purchasing, power marketing and environmental compliance activities. As a consultant, he has performed a large number of O&M reviews for clients, and has provided detailed feasibility studies for on-site generation applications for municipal, commercial and industrial energy consumers. Mr. Tummarello has a M.B.A. from New York University and a B.S., in Mechanical Engineering from Rensselaer Polytechnic Institute.

Vince Tummarello, E3 Consulting