ASHRAE Journal - June 2023 - 6

INDUSTRY NEWS
ASHRAE Publishes First
Zero Energy and Zero
Carbon Building
Evaluation Standard
ASHRAE has released a new standard to measure
zero net carbon and energy goals in 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
building operation. The standard
draws from ASHRAE Standard
105, among others, 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
SHRAE, chair of the Standards Project
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. "
Additional features of Standard 228 are as follows:
* Allowances for sites that lack the opportunity
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
6
ASHRAE JOURNAL ashrae.o rg J U N E 2 0 2 3
source-a multiplier on the energy crossing the site
boundary to include 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.
Standard 228 does not
apply to the establishment
of building energy
of building energ
building operation. The standard
performance goals or limits;
design guidance or design
requirements; embodied
energy of building materials
and systems; and transportation
to and from a building. The
erformance goals or limits;
design guidance or design
requirements; emb died
energy of building materials
and systems; and transportation
to and from a building. The
standard is also not intended to
standard is also not intended to
circumvent any safety, health, or
circumvent any safety, health, or
environmental requirements.
To purchase Standard 228environmental
requirements.
To purchase Standard 2282023,
visit ashrae.org/228 or contact
ASHRAE Customer Contact
2023, visit ashrae.org/228 or contact
ASHRAE Customer Contact
Center at 1-800-527-4723 (United
States and Canada), 404-636-8400
Center at 1-800-527-4723 (United
States and Canada), 404-636-8400
(worldwide) or fax 678-539-2129.
Standard 228 has been published on continuous
maintenance. A Standing Standard Project
Committee (SSPC 228) has been formed to update
the standard through the publication of addenda
or revisions to any part of the standard. SSPC 228 is
chaired by Dr. Paul Torcellini. Instructions for how to
submit a change can be found on the ASHRAE website
at ashrae.org/continuous-maintenance.
For more information on the standard, visit
tinyurl.com/Standard-228.
http://www.ashrae.org/228 http://www.ashrae.org/continuous-maintenance http://tinyurl.com/Standard-228 http://ashrae.org
ASHRAE Journal - June 2023

Table of Contents for the Digital Edition of ASHRAE Journal - June 2023
