Building energy efficiency into new construction is easier than teaching an old building (or building owner) new tricks. But many designers and builders still need schooling in energy-efficient construction—lessons that can be found in the New Construction Guide.
The latest offering from the New Building Institute’s (NBI) Advanced Buildings tool suite is a whole-building, step-by-step approach to new commercial construction projects that result in efficiencies up to 40 percent higher than conventional buildings. Building design and construction professionals can reference the New Construction Guide to define high performance in building envelope, lighting, HVAC, power systems and controls.
Learn from experts
The people behind the guide know how to achieve efficiencies without adding costs. The primary authors include NBI’s Technical Director Mark Frankel, Program Manager Sean Denniston and Project Manager Mark Lyles. Collectively, they bring decades of experience in improving building performance and strengthening building codes nationwide.
Technical contributions came from experts across the construction and building systems industry. The fields of energy efficiency and resource conservation, design, research and policy are well represented along with specific systems such as lighting, heating and cooling and building controls. The ASHRAE 90.1 standard, the International Energy Conservation Code and the Consortium for Energy Efficiency were referenced for lighting and mechanical equipment performance levels. The guide also ties the measures to utility energy efficiency programs.
Underpinning the New Construction Guide is an extensive energy modeling protocol. The authors evaluated energy-efficiency measures using eQuest building energy use analysis software to conduct more than 100,000 modeling runs on prototype buildings.
They applied three to five measures to each building prototype and ran energy use analysis in ASHRAE’s eight identified climate zones represented by 16 US cities. Measures were only included if they offered savings beyond the baseline buildings in most scenarios, or significant savings in specialized cases. Once the most effective individual measures were identified, they were all applied as a package to each building prototype in each climate scenario to get predicted savings for the program as a whole.
Power providers get involved
The New Construction Guide has several utility sponsors who independently modeled the measures and validated the approach and methodology.
Ralph DiNola, NBI executive director, would like to see utilities incorporate the guide into commercial building incentive programs. “For example, some of our utility partners are offering builders dollars per square foot for implementing the guide,” he said. “Those programs have delivered cost-effective energy savings at a lower cost than other utility incentive programs.”
Utilities including ComEd and NSTAR Electric and Gas have worked with builders in their territory to implement measures from the Core Performance Guide, the previous edition of the new guide, in local projects. Energy program administrator Efficiency Maine and the transmission and distribution network National Grid both have building projects in the pipeline that implement the New Construction Guide.
Municipalities that have LEED [Leadership in Energy Efficient Design] requirements for new public buildings will find yet another use for the guide. The United States Green Building Council allows the program to be used to achieve energy prerequisites and credits for LEED certification, on the version of LEED.
Established in 1997, the New Building Institute is dedicated to improving the energy performance of commercial buildings by providing policy and program direction, and promoting best design practices and available technologies. NBI’s board of directors comprises leaders in the energy efficiency and green building industries, including representatives from utilities like Pacific Gas and Electric.
The Advanced Building program promotes high performance buildings with technical tools and educational resources such as case studies, webinars, reference guides and research findings. Sponsors and supporters include the Department of Energy, Energy Center of Wisconsin and New York State Energy Research and Development Authority.