Team Members

Due Diligence & Technical Services

Carol Ho, P.E.
Senior Director

Carol Ho is an environmental engineer with diverse experience in evaluating all aspects of environmental requirements associated with energy projects, ranging from renewable energy and thermal projects to oil and gas engagements.  Ms. Ho focuses on environmental risk assessment and permitting compliance issues, including evaluation of the biological impacts and mitigation strategies associated with wind and solar farms.  Her evaluations of projects include all aspects of local, state and federal level environmental permitting, including current regulatory initiatives to streamline compliance with the Endangered Species Act, Bald and Golden Eagle Protection Act, and Migratory Bird Treaty Act.  Overall, her work typically includes independent research, documentation requests, reviewing the applicable regulations, permit conditions, Phase I Environmental Site Assessments, notices of violation and compliance orders.  Her experience in navigating permitting requirements provides clients with valuable guidance in interpreting common regulatory issues and maintaining compliance.  Ms. Ho has a B.S. in Environmental Engineering from the University of Guelph, located in Ontario, and is a registered environmental engineer in the State of Colorado. She is pursuing a Master in Sustainable Leadership from Arizona State University.

Carol Ho, E3 Consulting

Ajinkya Joshi
Energy Manager

Ajinkya Joshi is an energy manager with E3 Consulting. He is responsible for conducting energy resource analysis, technical equipment due diligence, energy modeling, and reviewing performance testing provision and results. Mr. Joshi also offers development support related to integrated solar and battery energy storage system (BESS) projects to support project financing. 

Before joining E3, Mr. Joshi was a senior analyst – energy storage where he worked on a variety of PV and battery storage projects. He has lead execution of web-based energy modelling platform deployed on MS Azure and has modeled technical, economic, and performance parameters for solar and BESS projects. Mr. Joshi also worked for a leading solar PV developer in India where he has extensively used PVsyst for simulation and design of utility-scale solar PV farms. In this role he analyzed energy and meteorological data using Python and MS Excel for performance evaluation of assets. He also provided engineering design and optimization, estimates of losses, and root cause analyses to maximize energy yields, among other tasks.

Mr. Joshi has a master’s degree in Energy Systems Engineering from the Indian Institute of Technology Bombay and a bachelor’s degree in Electrical Engineering from the University of Mumbai. He is a lifelong learner who has taken several courses leading to certificates that have advanced his knowledge of the energy industry.

Galyn Land
Executive Director

Galyn Land is a project and construction management professional and head of E3’s Construction Management Practice. Mr. Land has performed due diligence reviews on over 500 project financings encompassing: natural gas storage projects, petroleum and chemical refineries, natural gas pipelines, air pollution control projects, solid fuel (coal, wood, and refuse) power plants, gas/oil fired power plants in both combined and simple cycle configuration, coal gasification, and biofuel facilities. He has reviewed project and construction issues related to contracts, constructability, project and construction costs, and schedules. Mr. Land also provides construction- monitoring services on various types of facilities in North America. He has a B.S. in Construction Management from Colorado State University.

Galyn Land, E3 Consulting

Jim Langel
Executive Director

Jim Langel, P.E., leads E3’s solar practice, providing a strong background in leading commercial, industrial, and utility-scale solar projects from development through operations. Jim brings to E3, 15 years of experience in power generation, energy transmission, and the solar and renewables sector. He has served as a developer, EPC contractor, and Independent Engineer. As an Independent Engineer, he has led due diligence for a variety of solar, wind, and geothermal assignments, and has a deep understanding of project finance.

Mr. Langel’s hands-on experience in project development and financing, EPC negotiations and execution, and construction and schedule management adds significant strength to our team. Mr. Langel earned a M.S. in Engineering Management from the University of Kansas and a B.S. in Civil Engineering, with an emphasis in Construction Management, from the University of Iowa. He is a  professionally licensed civil engineer in a number of states.

Jim Langel, E3 Consulting

Mike O’Dell, P.E.
Executive Director

Mike O’Dell advises clients on financial and technical due diligence, asset management, and project management activities. As an Independent Engineer, Mr. O’Dell identifies a project’s potential technical and operational risks as part of the due diligence process and is responsible for managing and performing reviews to support project financings.  He provides reviews on a variety of technologies, including wind and solar power projects; thermal stations; flash and binary geothermal facilities; waste energy facilities; and combustion turbine facilities. Prior to joining E3, he was a senior project manager for SAIC Energy, Environmental, and Infrastructure).  Mr. O’Dell has both a B.S. and a M.S. degree in Mechanical Engineering from the University of Missouri at Rolla and is a registered professional engineer.

Mike O’Dell, E3 Consulting

John Purcell, P.E.
Executive Director

John Purcell is an E3 project manager and consultant who has managed a variety of domestic and international power projects, including significant experience with nuclear facilities. Mr. Purcell’s extensive EPC project management experience includes gas-fired combustion turbine, geothermal, woody biomass, hydroelectric, and natural gas liquid plants. Prior to joining E3, he spent six years on the senior site PWR management team where he managed projects and programs consisting of integrated engineering, design subcontractors, construction contractors, owner QA, and owner start-up teams. His project team was awarded ‘Project of the Year’ for the Machala Power Project, a 130 MW natural gas simple cycle plant located in Ecuador, South America, which also achieved early operation. At present, Mr. Purcell serves on the Independent Monitoring team monitoring the Donald C. Cook Nuclear Plant’s multi-year Life Cycle Management Program. He is a licensed professional engineer with a B.S. in Mechanical Engineering from Lowell Technological Institute and a M.B.A. from the University of Pittsburgh.

John Purcell, E3 Consulting

Albert Rettenmaier
Executive Director

Albert “Al” Rettenmaier is E3’s Oil, Gas, and Chemicals Practice Leader. He has extensive experience as an energy executive in the renewable energy, gasification, power generation, oil & gas and chemicals industries. Mr. Rettenmaier has managed engineering and construction for capital-intensive projects and has an in-depth understanding of how to develop and successfully implement large capital projects. His expertise in front-end project development is key to getting projects through final investment decision and to financial close. Moreover, Mr. Rettenmaier’s experience in R&D, projects, operations, and startup companies enables him to assist clients on matters of technology, project contracting strategy and execution, due diligence, creditor advisory, and other services pertaining to project financing. He 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

Chris Wright
Executive Director

Mr. Wright leads E3’s energy storage practice, providing expertise in technical and commercial due diligence for both standalone and integrated solar, wind, and thermal projects. With an extensive background in renewable energy which includes thin film manufacturing, technical and commercial due diligence, project development, EPC and O&M across solar, wind and energy storage technologies, Mr. Wright is actively involved in providing due diligence investigations, operating reviews, and advisory services. 

Mr. Wright’s background in renewable energy spans over fifteen years.  He has held key positions in operations, engineering and technical due diligence roles for wind, solar and energy storage.   This includes extensive experience in both utility-scale and Distributed Generation project development, engineering, construction and operations supporting over 450MW’s of solar, 300MW’s of wind and over 1GWh of energy storage projects globally.      

Mr. Wright has served as the Subject Matter Expert for all aspects of stationary energy storage, including lithium-ion battery technology, system design and applications, system performance, commercial and technical warranty and performance contracting, battery recycling and market trends.  He actively attends industry conferences and provide ‘thought-leadership’ content for events and social media platforms (i.e., LinkedIn). Invited speaker at various SPI 2020 events and PV Magazine online content.  Mr. Wright has a Master’s degree in Engineering from the University of Toledo and a B.S. in Electrical Engineering Technology from the University of West Florida.

Chris Wright, E3 Consulting