Justin Averitt

VP, Wind Operations & Maintenance

With over 15 years of experience, Justin Averitt’s intersection of technical and business expertise make him a great fit to lead the operations of Gemini. Prior to joining Tetra Tech, Justin has worked as Fleet Manager for wind turbine operations, Director of Operations for a nonprofit organization and consultant for startups providing strategic advancement and execution. Justin is a graduate of University of Denver’s Daniel School of Business with a Master of Business Administration degree. He also obtained his B.Sc. in Business Operations and Management from the University of Colorado, Boulder.


Alan Tennery

Director of Engineering, Wind Operations & Maintenance

Alan comes to Tetra Tech with nearly 20 years of engineering experience across commercial aerospace, environmental science and renewable energy industries, where he has worked in startups, non-profits and large corporations. A creative thinker and problem-solver, Alan has led systems engineering for a continental scale environmental observatory measuring climate data, managed test programs validating design and performance characteristics of wind turbines, and overseen flight control and landing gear maintenance and reliability modification projects for commercial aerospace. Alan obtained his B.Sc. degree in Engineering from California State University – Sacramento.


Matt Campbell

Director of Operations

Matt Campbell brings military and technician training to excel as Director of Operations at Gemini Energy Services. Before joining Gemini, Matt enlisted in the Navy’s nuclear propulsion training program as an electrician on the USS Alaska, a ballistic missile submarine. He completed deterrent patrols, a change of homeport and a complete reactor refueling. In 2012, Matt joined Gemini as a field service technician specializing in photovoltaic inverters and transitioned into wind energy. With an extensive industrial background, Matt currently coordinates between customers and technicians to ensure quality wind energy projects are completed.


Natalie Mazzotta

Project Director

Natalie is an excellent point of contact to request services from Gemini’s technical support teams. For projects large and small, Natalie targets the appropriate technicians’ skill sets, industry best practices, emerging trends and technology. Affiliated with WRISE and AWEA WINDPOWER, she strongly believes in the collaborative processes of the renewable market industry. With a Master’s Degree in Education, she is a lifelong learner and educator, pushing the boundaries of the renewable energy acumen.


Sarah Hackenberg

Customer Manager

Sarah is our Customer Manager, a balanced role between Resource Manager and Account Manager. She communicates daily both with the customer and our technicians – ensuring that all site movements, campaign changes and issues in the field are addressed immediately. In Sarah’s free time, she is pursuing her B.S. in Natural Resources with an Emphasis on Policy & Management from Oregon State. She has a background as a wind technician and as a certified electronics technician in telecommunications, RADAR and fiber-optics. Like many of our employees, she is also a proud military veteran, having served in the U.S. Navy.


Josh Koppel

Resource Manager

Josh Koppel is an exciting new addition to the Gemini team, coming from Albany, NY with three years of experience in both wind and solar industries. He brings extensive knowledge of the pre-construction process, skilled in resource management and business development. Before joining Gemini, Josh began his renewable career as a Product Specialist and subsequently as a Project Coordinator. Josh holds a B.A. in Political Science from the University of Massachusetts, Amherst.


Jesse Smith

Commissioning Manager

With a diverse background of more than 10 years in wind energy, Jesse brings an in-depth understanding on all aspects of daily operations on modern day wind farms. He has worked on Wind Turbine construction, commissioning, major correctives and daily O&M on the majority of North American wind turbine platforms to date. His passion for work excellence and the absolute safety for everyone on site, helps drive the Gemini culture of completing every job on time, correctly and safely. Jesse is continuing his wind education through Commissioning training to lead a growing team of Commissioners on the Acciona turbine platform.


Sandee Vargas

Office Manager

Sandee Vargas, born and raised in Sunny San Diego, has been the Office Manager at Gemini since 2016. She has over 5 years of experience in administration. She is responsible for all of the day-to-day operations in the Gemini headquarters. This includes managing accounts payable, coordination for new hires, tracking project expenses and general back office support for our technicians. Sandee is an excellent point of contact to connect outside inquiries with the appropriate members of the Gemini team.


Lourdes Pasillas

Administrative Assistant

Lourdes Pasillas is native to San Diego and a strong new addition to the Gemini team. Concentrating on company growth, Lourdes plans and attends marketing events, supporting clients and promoting technician recruitment. Dedicated to the internal workflows within Gemini, she aligns work in the field with company requirements. She is dedicated to the wellbeing of field technicians to ensure they have uninterrupted office support and resources. Lourdes holds a B.A. in Psychology from San Diego State University.