Engineering Services Sustainable Investment Group
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photo of Scott doing Retro_CommissioningSustainable Investment Group’s (SIG) in-house technical services team streamlines the engineering work for sustainable design, construction, and operations of green buildings. In union with our consulting team, SIG is committed to integrative solutions to project management. Our professional engineers prepare thoughtful recommendations and reports to meet your sustainability goals for budget and resource efficiency.

Energy Modeling

At the design phase, we join the team by building an energy model to estimate energy costs. It’s the perfect time to start optimizing the building envelope and mechanical systems with green design features. In this discovery stage, computer modeling helps compare first costs to life-cycle costs, and we make the best recommendation for your triple bottom line. Finally, we take the technical summaries and complete the LEED documentation in collaboration with our consulting team overseeing the comprehensive application. Learn more about SIG’s Energy Modeling services, here.


While a project is under construction, our commission team is already hard at work. SIG’s approach for the best value for commissioning is to integrate the Cx process into the entire project schedule. From document review to operator training, our engineers are on-site trouble shooting anticipated problems. Learn more about SIG’s Commissioning (Cx) services, here.


For your existing building, optimizing energy performance begins with energy audits. SIG’s engineers follow ASHRAE procedures to document and understand your building’s current operations. Then, we benchmark your utility bills in the EPA’s ENERGY STAR Portfolio Manager Program. Sustainable Investment Group (SIG) has years of hands-on experience with the ENERGY STAR program, and our volume of work has earned us the selective title of Elite Member for the EPA’s green building certification program known as Portfolio Manager. In 2014, we certified over 150 unique buildings for our clients all over the nation. Learn more about SIG’s ENERGY STAR services, here.


Does your existing building need a major tune-up? SIG’s retro-commissioning (RCx) services offer the deepest dive into uncovering areas for improvement, optimization, and investment. RCx is where our engineering team really shines. For a 50-story building client in New York City, we uncovered over half a million dollars’ worth of operating savings through the RCx process. We get these results because we know where to look and what actions deliver results. Our engineers have audited and certified over 50 million square feet of building space and our pricing remains fair and competitive. Don’t let those precious dollars slip away in unseen waste. Audit today and save tomorrow. Learn more about SIG’s Retro-Commissioning (RCx) services, here.

If you would like to speak with someone and learn more about SIG’s engineering services, please call Scott Baker at 404.343.3855.