Sustainable Investment Group, LLC (SIG) is a sustainability consulting firm that provides technical and strategic environmentally focused solutions to design, construction, real estate, and building operations professionals to support a high level of performance, value, and quality in the built environment and within businesses and organizations. Beyond consulting, SIG helps grow the green building industry through education and training. The firm is comprised of LEED Accredited Professionals with design, construction, property management, & real estate backgrounds.

Green Exam Academy is the most popular blog about the LEED exam on the web. It's mission it to teach anyone the exact process of how to study for and pass the LEED Green Associate and LEED AP Specialty exams in simple, easy to understand terminology. The community and social interactions within the blog itself tend to make studying for the exam a lot less intimidating, as people feel more comfortable meeting and discussing topics with like minded, motivated people.

EcoPotential offers customized sustainability training, LEED consulting, specialized green building training, and LEED AP exam preparation.