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About Us

GBC is a multi-disciplinary engineering firm offering high quality energy, environmental and engineering consulting services.

Vinay Ananthachar, PE
Principal and Co-founder

Mr. Ananthachar is a multi state licensed professional engineer with more than 15 years of experience in the energy industry. He has worked on numerous projects to reduce energy usage in residential and commercial buildings throughout Northeast US. He serves on several technical committees at ASHRAE, where he actively participates in the development of building energy standards, handbooks and guidelines. Mr. Ananthachar is also a part of P.E. Mechanical Exam Committee at NCEES, Seneca, SC. Mr. Ananthachar has a BS in Mechanical Engineering (India), MS in Solar Energy (UMass) and a Master's in Environmental Management from Yale University.

Archana Sullad, LEED GA


Ms.Sullad is an industrial engineer. She has worked in the manufacturing industry in India before moving to the US. She has a diverse background and is passionate about working towards a healthier environment and a healthier community. Recently, she started a support group called Cultural Connections, focusing on helping immigrant women adapt to life in the US. Ms. Sullad has a BS in Industrial & Production Engineering from India and an M.S. in International Studies from Central Connecticut State University. She is a LEED Green Associate.

John Wilkerson, C.E.M.
Sr. Energy Engineer and Business Development Manager


John Wilkerson, Senior Energy Engineer at Green Banyan Consulting, has over 12 years experience delivering energy consulting services.  While his primary focus has centered around energy efficiency and deep energy retrofits of multifamily properties, John has also served the single family residential and commercial sectors.  John is a Certified Energy Manager through the Association of Energy Engineers, and holds various additional building science certifications.  Throughout his career, he has worn many hats, and has extensive experience in: project implementation, crew and department management, quality control inspection, estimation, and energy calculation and simulation.

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Disha Bhonsle
Energy Engineer


Ms. Bhonsle is an Energy Engineer with GBC and has experience in renewable energy resources, manufacturing, designing, quality control and 3D printing. She holds a BS in Mechanical Engineering from Mumbai University and a MS in Mechanical Engineering from University of New Haven, CT.

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David Bebrin
Principal Engineer


Dave has an extensive energy background gained over 32-yrs of experience working in all aspects of the energy efficiency industry from program planning, design, implementation, QA/QC and evaluation to project contract arranger.  For nearly eight years, Dave led CL&P’s (now Eversource) nationally recognized "Energy Conscious Program" and "Tailored HVAC Program."  His specialties include energy analysis of new technologies, chillers, controls and school construction.  Before entering the energy field, Dave was an instructor of engineering at The University of Connecticut.  He has an MS and a BS in Mechanical Engineering.  Besides his academic degrees, he holds several professional certifications awarded by the Association of Energy Engineers (AEE). 

What is Banyan?


It is an Indian fig tree whose branches produce aerial roots that later become accessory trunks. A mature tree may cover several acres in this manner. For thousands of years, people have used banyans as sources of medicines. Today in Nepal, people use banyan leaves, bark and roots to treat more than twenty disorders. Hindu texts written more than 2500 years ago describe a cosmic ‘world tree’, a banyan growing upside-down with its roots in the heavens. Its trunk and branches extend to Earth to bring blessings to humanity. (Source: Ladders to Heaven by Shanahan, M.)

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