Sustainable Investment Group - A sustainability consulting firm that provides environmentally focused solutions

Our Services

LEED Training & Education

SIG provides comprehensive training on a wide range of sustainability topics. We have developed many standard training courses and provide customized programs to meet the objectives and interests of your specific audience.


Learn how SIG helps grow the green building industry through education and training

Green Building Consulting

With offices in Atlanta, GA, Boulder, CO, Minneapolis, MN and New York, NY, SIG is a green building consulting firm whose team members bring years of experience in LEED, design-build commercial construction, real estate development, business efficiencies, and eco training.

Learn more about our LEED consulting services

Technical Services

SIG has in-house Technical Services Staff that hold credentials like PE, CxA, CEM, CPMP, LEED AP, and more. Our engineers have extensive Retro-Cx, LEED prerequisite, Energy Audit, and Energy Star experience.



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Electric versus Hybrid

Batteries versus Gasoline With their relative newness and variety of configurations, a hybrid electric vehicle can become easily confused with an electric car. In simplest terms, electric vehicles rely only on electricity for power while hybrids combine battery-stored power with energy from gasoline. Because of this dual power source, hybrids can be more complicated than […]
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SIG Recognized as a LEED® Proven Provider

In September 2014, the USGBC recognized Sustainable Investment Group, LLC (SIG) as a LEED® Proven Provider™ for the O+M rating system family. This designation was developed to streamline the LEED application review process for experienced organizations. As a leader in the field of existing buildings, SIG has provided top-notch LEED O+M consulting services for the […]
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