St. Louis recently passed a new law requiring all new buildings to be made solar-ready.
All new structures—commercial and residential—must reserve rooftop sections for solar panels to be easily installed. The ordinance does not mandate that rooftop solar be installed.
The solar-ready zone must be at least 40% of the roof area. It can be one contiguous area or multiple smaller sub-zone areas that are no less than five feet in width at their narrowest point. The solar-ready area cannot be obstructed by pipes, vents, HVAC equipment, or other shadow-casting elements.
Construction documents must outline pathways for routing of piping from the solar-ready zone to the building’s electrical service panel or service hot water system. The electrical panel must also have reserved space for a dual-pole circuit breaker to support future solar installations.
New buildings that have permanently-installed onsite generation systems already, buildings whose solar-ready zones would be shaded from sunlight for more than 70% of the day, and buildings where a licensed design professional has deemed that the solar radiation available to the building is not suitable to a solar-ready zone or because the area requirement cannot be met due to extensive rooftop obstructions, may be exempt.
Related Stories
Codes and Standards | May 7, 2019
WSP USA says it will be carbon neutral in 2019
Engineering firm will offset carbon at all offices and with employee business travel.
Codes and Standards | Apr 25, 2019
Report: Contractors invest $1.6 billion in workforce development annually
ABC members increased training spending 45% from 2013, according to a new report.
Codes and Standards | Apr 25, 2019
New York City’s Green New Deal would ban all-glass skyscrapers
The ambitious plan would also boost affordable housing, reduce building emissions, and update codes to account for sea level rise.
Codes and Standards | Apr 25, 2019
Chicago, Houston, and Dallas deemed ‘most dangerous cities for migratory birds’
The three cities are in the heart of North America’s most trafficked aerial corridors.
Codes and Standards | Apr 19, 2019
Notre Dame fire highlights danger of renovating historic structures
The devastating fire at Notre-Dame de Paris is the latest blaze to damage or destroy historic buildings while undergoing renovations. It highlights how vulnerable such structures are to fire while undergoing repairs.
Codes and Standards | Apr 19, 2019
Developers and owners can now join AIA 2030 Commitment
Organization offers tools and resources for working toward net-zero design.
Codes and Standards | Apr 19, 2019
New method of manufacturing cement removes CO2 from the air
Breakthrough could have significant impact on reducing greenhouse gas emissions.
Codes and Standards | Apr 12, 2019
Deadline nears on New York City sprinkler requirement for tall office buildings
The mandate applies to all buildings regardless of when constructed.
Codes and Standards | Apr 8, 2019
LEED v4.1 now available for cities, communities, residential/homes
The rating system emphasizes performance monitoring, fully integrated design, social equity, and human health.
Market Data | Apr 8, 2019
Engineering, construction spending to rise 3% in 2019: FMI outlook
Top-performing segments forecast in 2019 include transportation, public safety, and education.