ASHRAE has released a new standard that defines the terms "zero Energy" and "zero carbon" to describe buildings.
ANSI/ASHRAE Standard 228-2023, Standard Method of Evaluating Zero Net Energy and Zero Net Carbon Building Performance, sets requirements for evaluating whether a building or group of buildings meets a definition of “zero net energy” or a definition of “zero net carbon” during operation. The standard draws from other ASHRAE standards to address energy and carbon flows across a site boundary, their measurement, and their balance.
“Achieving a zero energy building has been viewed by many as a difficult goal to meet, with unforeseeable roadblocks and differing guidance,” said Keith Emerson, P.E., Life Member ASHRAE, chair of the Standards Project Committee 228. Standard 228 provides a consistent method for determining whether new and existing sites have reached zero energy. We hope this standard will become a helpful resource for building professionals in strategic decarbonization planning.”
Features of Standard 228 include:
- Allowances for sites that lack the means to produce adequate renewable energy, while placing additional requirements on the use of external carbon and renewable energy in the calculation.
- Defined calculation of energy in terms of source—a multiplier on the energy crossing the site boundary including energy used or lost in extraction, generation, and transit to the site.
- The main energy calculation made in terms of annual average factors. Allowance is made for the calculation of individual hours where data is available.
Related Stories
| Feb 23, 2012
Federal agencies fixed on leasing LEED-certified space
The federal government is especially focused on renting LEED-certified spaces.
| Feb 23, 2012
Regulators investigating construction accident at World Trade Center
The New York Port Authority and the city’s fire and building departments are investigating an accident at the World Trade Center construction site in lower Manhattan after a crane dropped steel beams that fell about 40 stories onto the truck that delivered them.
| Feb 23, 2012
New Virginia statewide building code goes into effect March 1
After March 1, all building plans in Virginia must adhere to the 2009 code that was adopted a year ago.
| Feb 23, 2012
Privatizing flood insurance could lead to new code requirements
One thing that could pave the way toward private flood insurance would be NFIP reforms, like requiring new construction in flood-prone areas to be elevated.
| Feb 22, 2012
ACI BIM manual for cast-in-place concrete in development
The improved communication, coordination, and collaboration afforded by BIM implementation have already been shown to save time and money in projects.
| Feb 20, 2012
Comment period for update to USGBC's LEED Green Building Program now open
This third draft of LEED has been refined to address technical stringency and rigor, measurement and performance tools, and an enhanced user experience.
| Feb 20, 2012
GAF introduces web portal for architects and specifiers
The new portal offers a clean look with minimal clutter to make it easier to find the technical information and product data that architects need.
| Feb 17, 2012
AGC advocates for federal procurement reform
Ensure that small business goals take into consideration actual small business capacity in relevant specialty markets.
| Feb 17, 2012
Codes not to blame for Anchorage roof collapses following heavy snows
Design or construction problems likely contributed to the collapses, according to city officials.
