our team

George Hall As President, George brings over 30 years of experience in corporate sales and operations. In previous roles, George served as Vice President of Business Development, where he played a pivotal role in helping to expand the company's market presence. As a former General Manager of operations and solar installation, George was responsible for ensuring the team delivered quality service in a timely fashion.

Beyond his professional achievements, George is also deeply committed to serving and empowering his community. Throughout his life he has dedicated his time and resources to mentoring and coaching young people. George actively serves on the board for non-profit organizations that empower and assist youth in reaching their potential as young adults.

George earned his BS degree from Cornell University College of Agriculture and Life Sciences. At Cornell he also lettered on the Big Red basketball team and met his wife of 30 years, Kerri Fermino. And, along with their sons, Julian and Griffin, George is a proud member of Kappa Alpha Psi Fraternity.

Kerri Fermino Hall is a highly experienced technology sales manager having had responsibility for $10M+ annual sales revenue of electrical design technology focused on electric vehicles (EV), software defined vehicles (SDVs), and aircraft design.  She has held various roles in the high tech industry as a sales director, individual contributor, and sales engineer.  Prior to joining the sales arena, Kerri was an engineer developing undersea warfare simulations and performing independent verification and validation.Kerri received her Bachelor of Science from Cornell University in Operations Research and Industrial Engineering.

Julian Hall has been a driving force behind solar adoption across key U.S. markets. As Senior Vice President at HelioSource Solar, he leads all sales efforts and revenue strategy, helping propel the company’s rapid growth in both residential and commercial sectors. Julian has worked extensively in California, New York, Texas, Washington, D.C., and Florida—developing strategic partnerships and leading high-performing sales teams to close fully funded solar projects at scale. He earned his B.A. from the University of Maryland and brings deep expertise in sales leadership, project management, and business development within the renewable energy space.

 Since 1999, Derek Williams has honed his skills in construction finance, specifically as it relates to commercial sub-contracting.  He serves in roles as VP of Finance/Controller, and leads in  budgeting and business review functions.  He also manages the company’s relationships with banking, insurance, and bonding partners, constantly seeking to improve efficiency within these vital areas of the business.  Derek also oversees accounts receivables/payables, and is well-versed in multiple accounting software platforms.  Derek received his B.S. degree from Cornell University, and his MBA from  the Kenan-Flagler Business School at UNC Chapel Hill.

Keith Matthews is a seasoned Senior Manager with 30+ years of experience across various industries including nuclear power generation, industrial controls and telecommunications industries. He has a proven track record of delivering performance contracts, leading teams, and implementing complex IT solutions to drive operational efficiencies and cost reductions. Keith attended Cornell University, Howard University, and Otterbein University and possess a BS in Mechanical Engineering and an MBA. Beyond work, Keith is a dedicated family man, actively involved in his community and enjoys riding his Harley Davidson and the culinary arts. His expertise and collaborative approach to identifying and implementing solutions makes Keith a valuable addition to HelioSource Solar's team.

Since 2009, Derek Ross has excelled in business development within the commercial construction space, primarily in the Mid-Atlantic region.  In his roles as Business Development Director, he has established revenue-generating partnerships with top-tier general contractors leading to over $65M in revenue.  Derek has also established relationships with key architects in the DMV, including Design Collective, Fred Ward Associates, and Colimore Architects.  Derek received his B.S. degree from Cornell University, and his MBA from NYU Stern.

A 2023 recipient of the President Joseph Biden Volunteer Service Award, Mr. Avent is no stranger to empowering communities through his leadership. Edwin Avent is a highly experienced professional with a strong background in education, administration, and business ownership. With a passion for empowering others and a proven track record of success, Edwin is well-suited for the role as Business and Workforce Development Executive at HelioSource Solar. Edwin has dedicated his career to helping young people achieve their full potential, equipping them with the necessary skills and knowledge to thrive in the workforce. His experience as an administrator has honed his ability to strategize and implement effective plans. His knowledge and experience are put to use often as part of the leadership team for the Baltimore Collegiate School for Boys. Mr. Avent’s past in entrepreneurship has also provided him with valuable insights into the business world. This unique combination of skills makes Edwin an invaluable asset in driving business growth and fostering a skilled workforce in the solar industry. With his outstanding leadership abilities, deep understanding of education, and business acumen, Edwin Avent is valued member of our team and to the success of HelioSource Solar. Mr. Avent received his BS in Policy Analysis and Management from Cornell University.