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
Sponsored | Healthcare Facilities | May 3, 2022
Planning for hospital campus access that works for people
This course defines the elements of hospital campus access that are essential to promoting the efficient, stress-free movement of patients, staff, family, and visitors. Campus access elements include signage and wayfinding, parking facilities, transportation demand management, shuttle buses, curb access, valet parking management, roadways, and pedestrian walkways.
Codes and Standards | May 3, 2022
American Institute of Steel Construction updates environmental product declarations
The American Institute of Steel Construction has released updated environmental product declarations (EPDs) “to help designers and building owners design more environmentally friendly buildings and bridges,” according to an AISC news release.
Codes and Standards | May 2, 2022
Developer Hines, engineer MKA develop free embodied carbon reduction guide
Real estate management and investment firm Hines has released the Hines Embodied Carbon Reduction Guide. The free guide, produced with Magnusson Klemencic Associates (MKA), is the result of a two-year effort, relying on MKA’s industry-leading knowledge of carbon accounting and involvement in programs such as the Embodied Carbon in Construction Calculator (EC3) Tool.
Codes and Standards | Apr 28, 2022
Architecture firm Perkins&Will to deliver ‘carbon forecasts’ for clients
Global architecture firm Perkins&Will says it will issue its clients a “carbon forecast” for their projects.
Codes and Standards | Apr 27, 2022
White House guidance on Buy American for infrastructure includes waiver process
Recently released guidance on the Buy American provision within the $1.2 trillion Infrastructure Investment and Jobs Act released by the Office of Management and Budget includes a waiver process.
Multifamily Housing | Apr 26, 2022
Investment firm Blackstone makes $13 billion acquisition in student-housing sector
Blackstone Inc., a New York-based investment firm, has agreed to buy student-housing owner American Campus Communities Inc.
Codes and Standards | Apr 25, 2022
Supply chain constraints, shifting consumer demands adding cost pressures to office fit-outs
Cushman & Wakefield’s 2022 Americas Office Fit-Out Cost Guide found supply chain constraints and shifting consumer demands will continue to add pressure to costs, both in materials and labor.
Legislation | Apr 21, 2022
NIMBYism in the Sunbelt stymies new apartment development
Population growth in Sunbelt metro areas is driving demand for new apartment development, but resistance is growing against these projects.
Codes and Standards | Apr 18, 2022
Dept. of Energy has RFI on funding cost-effective updated energy codes implementation
The U.S. Department of Energy (DOE) Building Technologies Office (BTO) has issued a request for information regarding funding cost-effective implementation of updated building energy codes.
Legislation | Apr 14, 2022
Defense Dept. building largest 3D-printed structures in Western Hemisphere
The U.S. Department of Defense is constructing three barracks at the Camp Swift Training Center in Bastrop, Texas that will each be the largest 3D-printed structures in the Americas.