Co-Founders

Tim Rosenzweig
Chief Executive Officer
PivotGen’s co-founder and Chief Executive Officer, Mr. Rosenzweig brings more than 30 years of financial and executive experience, primarily in the renewable energy sector. Mr. Rosenzweig previously served as co-founder and CFO of FirstWind, a leading wind power developer. He also served as CFO of SolarReserve, a leading global developer of utility-scale solar power projects. Prior to his role with SolarReserve, Tim was the CEO of Goldwind USA. Tim holds a BS in civil engineering from Johns Hopkins and an MBA from Columbia.

Andrew Evans
Chief Commercial Officer
PivotGen’s co-founder and Chief Commercial Officer, Mr. Evans is responsible for project origination and development, product development, and mergers and acquisitions. Mr. Evans brings over 15 years of renewable energy and management experience. He was previously the Director of Commercial Transactions for Goldwind USA, the North American subsidiary of Goldwind Group, the world’s second largest wind turbine manufacturer.
EXECUTIVE TEAM
Shari Erwin
Chief Financial Officer
Shari Erwin is PivotGen’s Chief Financial Officer. Shari has been in the renewable energy industry for over 10 years, most recently as the CFO of Goldwind USA, Inc. Throughout her career, she has managed and contributed to numerous due diligence processes, including over 200 MW of wind projects, and has experience with tax equity financing. Shari has also worked in the consulting world, and prior to that, she practiced law, primarily focused on tax law, for over 8 years. She holds a BA in Accounting and a JD, both from DePaul University in Chicago.
Jen Karrson
General Counsel
PivotGen’s General Counsel, Jen Karrson is a corporate law specialist with over 20 years of experience in commercial transactions, including 15 years in the renewable energy industry. Jen was previously Senior Counsel at a financial services company and, prior to that, VP and Deputy General Counsel at Invenergy, where she oversaw corporate and commercial legal matters of the company in the US and Canada and was involved in a wide variety of transactions, including corporate and project financing transactions, acquisitions of project assets and corporate level restructurings. Jen holds a JD, cum laude, from Loyola University Chicago and a BS from the University of Illinois in Biology.
Bob Grimley
SVP of Engineering
As PivotGen’s SVP of Engineering, Mr. Grimley is responsible for technical evaluation of repowering technologies and project assessment. Mr. Grimley brings over 38 years of technology development and systems engineering experience, primarily in the energy and renewables sector. Previously, Mr. Grimley served as both the head of Technology Development and Systems Engineering Mgr. at GE Wind Energy. In these roles, he led teams that designed GE’s new onshore and offshore wind turbine models and developed, and implemented new wind turbine technologies, which helped GE grow its wind business annual revenue to multi-billion-dollar levels. Mr. Grimley holds a BS in mechanical engineering from Northeastern University.
Dennis Ford
SVP of Operations
PivotGen’s SVP of Operations is responsible for Project Execution, Operations & Maintenance, and Procurement while optimizing wind farm profitability. Dennis has nearly 30 years in the energy, mostly in renewables through roles with GE, Suzlon, and Pearce Renewables. Prior to PivotGen, he held leadership roles in Operations, Technology, Manufacturing, Product Development and Field Services. Most recently he led a post-COVID rebound of three industrial manufacturing plants for TLD North America. Dennis attended the State University of New York Maritime College in Bronx, NY where he studied Mechanical Engineering.
SENIOR MANAGEMENT
Nick Henriksen
VP of Development

Lucas Michelini
VP of Finance
Lucas assists PivotGen with his expertise in structured finance for utility-scale renewable energy projects, specializing in tax credit optimization structures and project debt. Lucas has over twelve years of experience in M&A and project finance. Prior to joining PivotGen, he worked at both GlidePath and Acciona Energy, during which time he worked on financing structures for standalone battery storage, solar PV, and wind repower opportunities and supported over $1B of executed buy-side, sell-side, tax equity and debt transactions plus due diligence on over 7.5 GW of renewable energy projects. Prior to his work in the energy sector, Lucas supported management of a portfolio of tax-exempt bonds and related securitizations backed by affordable housing projects. Lucas holds a Bachelor of Arts in Economics and Sociology from Northwestern University.
TEAM DIRECTORS
Meredyth Crichton
Director of Systems Engineering
Robert Curulla
Director of Development
Amit Jain
Director of Accounting
Laurie Mazer
Senior Developer
Bryan Reed
Director of Commercial Ops and Strategy
TJ Revelle
Director of Finance