About GBC

GBC is an energy consulting and engineering firm focused on helping commercial and multifamily building owners improve building performance, reduce operating costs, and navigate evolving energy and emissions regulations.

With over 20 years of combined industry experience, our team specializes in:

• Building energy audits

• ENERGY STAR® benchmarking

• Emissions compliance support

• Utility rebate programs

• HVAC and Building systems optimization

We work with property owners, facility managers, developers, and commercial real estate professionals to deliver practical, cost-effective solutions tailored to each building’s operational and financial goals.

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Our Mission

Our mission is to help building owners and organizations improve energy performance, reduce emissions, and achieve long-term operational and financial sustainability through practical engineering and energy management solutions.

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Client-Focused Approach

We believe successful energy projects require more than technical expertise — they require practical implementation strategies, clear communication, and a strong understanding of building operations and owner priorities.

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Engineering & Emissions Compliance Expertise

Green Banyan Consulting supports clients with building energy and emissions compliance programs, including:

• New York City's Local Laws 97, 88, 84

• Boston's BERDO Compliance

• Washington DC's Building Energy Performance Standards (BEPS)

• Decarbonization planning and emissions reduction strategies

We understand that compliance requirements can be complex and time-sensitive. Our goal is to simplify the process and help owners make informed decisions that balance compliance, energy savings, and capital planning.