If there’s a defining theme for the building sector in 2019, it’s energy codes. Actions to update the rules that cities and states set to determine how effectively new residential and commercial buildings use energy are progressing on several fronts across the U.S. These regulations define the next generation of building design and construction in terms of energy performance and since those projects will be in operation for decades, performance matters a great deal—now more than ever. You see, 2018 culminated with a preponderance of evidence that climate change is real and the time for action is immediate. Natural disasters are wreaking havoc across the globe and new reports sound the alarm for governments to do more to limit temperature rise.