City of Grand Terrace- 2022 Energy Code Updates2022 Title 24 Part 6 Updates
Electrification and the Codes
Dave Intner-Southern California Edison
March 16th, 2023
City of Grand Terrace
2022 Energy Code: Key Changes
General Provisions
Effective Date
Code Reconfiguration
Nomenclature
Modeling Metrics
3
Compared to the average American, Californians use about:
46% less electricity
31% less energy overall
Californians Use a Lot Less Energy than the National Average
Source: 2022 BUILDING ENERGY EFFICIENCY STANDARDS SUMMARY; California Energy Commission (CEC); August 2021
https://www.energy.ca.gov/sites/default/files/2021-08/CEC_2022_EnergyCodeUpdateSummary_ADA.pdfCode Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 4
Implementation Date
January 1, 2023
Any projects that apply for a
permit on or after this date
are subject to the 2022 Energy
Code requirements
Information and documents
available on the CA Energy
Commission website at:
https://www.energy.ca.gov/progra
ms-and-topics/programs/building-
energy-efficiency-standards/2022-
building-energy-efficiency
2022 Code Breaker: Nonresidential All Electric 5
2022 Energy Code
ADDs
& ALTs
§110.0-110.10
and §160.0
§170.2(a-f)
§170.1
2019 Energy Code:
Building Type Reorganization
Low-rise Residential High-rise Residential
Single-family Buildings Multifamily Buildings
§160.0-180.4§150.0-150.2
§110.0-110.10
and §150.0
§150.1(a) and (c)
§150.1(a) and (b)
2022 Energy Code:
§150.2 ADDs
& ALTs §180.0-180.4
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 6
§110.0-110.10
and §160.0
§170.2(a-f)
§170.1
§110.0-110.12; 120.0-130.5
§140.2-140.9
§140.1
2019 Energy Code:
2022 Code Breaker: Nonresidential All Electric 7
Building Type Reorganization
Hotel/Motel Nonresidential
Multifamily Buildings Hotel/Motel & Nonresidential Buildings
§120.0-141.1
2022 Energy Code:
High-rise
Multifamily
§160.0-180.4
ADDs
& ALTs §180.0-180.4
ADDs
& ALTs §141.0-141.1
2022 Code Breaker: Nonresidential All Electric 8
Compliance Nomenclature
Always required
regardless of
compliance approach
used
Mandatory
Required when using
the Prescriptive
compliance approach
Prescriptive
Optional feature
accounted for when
doing Performance-
based computer
modeling
Performance
Energy Code New
Construction Additions Alterations
2019 TDV Energy TDV Energy TDV Energy
2022 Code Breaker: Nonresidential All Electric 9
Evolving Building Energy Efficiency Ratings
Time Dependent Valuation (TDV):
“TDV Energy” is the time varying energy used by the building to provide space conditioning, water heating and
specified building lighting. It accounts for the energy used at the building site and consumed in producing and
delivering energy to a site, including, but not limited to, power generation, transmission and distribution losses.
For Nonresidential Construction
Energy Code New
Construction Additions Alterations
2019 TDV Energy TDV Energy TDV Energy
2022
TDVe,
TDVt,
Sourcet
TDV Energy TDV Energy
2022 Code Breaker: Nonresidential All Electric 10
Evolving Building Energy Efficiency Ratings
Time Dependent Valuation (TDV):
“TDV Energy” is the time varying energy used by the building to provide space conditioning, water heating and
specified building lighting. It accounts for the energy used at the building site and consumed in producing and
delivering energy to a site, including, but not limited to, power generation, transmission and distribution losses.
Source Total Metric (Sourcet):
A separate metric based on “hourly source energy,” which establishes a "carbon-proxy" analysis of the building in
kBTU/sf-yr units to support decarbonization and electrification policy goals.
For Nonresidential Construction
TDV Efficiency
a score representing the
building energy efficiency
expressed in terms of
TDV energy
based metric
Includes energy used by:
Envelope
IAQ
HVAC
DHW
Unregulated loads
2022 Code Breaker: Nonresidential All Electric 11
Performance Compliance Metrics (2022)
TDV Total
a score representing the
building’s Total TDV
while also factoring in
PV + Flexibility
Includes energy used by:
Efficiency measures
Photovoltaics
Batteries
Precooling
Source Total
a score representing the
building energy efficiency
expressed in terms of an
hourly source carbon
based metric
Includes energy used by:
Envelope
IAQ
HVAC
DHW
Unregulated loads
A building complies ONLY if all three compliance scores are met
(each Proposed Design score is lower or equal to Standard Design score)
2022 Energy Code: Key Changes
Single Family Construction
Electrification Readiness
Water Heating
Space Heating
Photovoltaics and Battery
12
Electric Homes Have 45% Lower GHG Emissions
An
n
u
a
l
T
o
n
s
o
f
C
O
2e
E
m
i
s
s
i
o
n
s
6
5
4
3
2
1
0
–45%
–61%
–82%
2020
Mixed
Fuel
All
Electric
Mixed
Fuel
All
Electric
Mixed
Fuel
All
Electric
2030 2050
Natural Gas Leakage
Natural Gas Combustion
Refrigerant Leakage
Electricity (Indirect)
Source: Energy & Environmental Economics Inc., “Residential Building Electrification in California," Key Findings: Greenhouse Gas Savings, 2019. Available:
https://www.ethree.com/wp-content/uploads/2019/04/E3_Residential_Building_Electrification_in_California_April_2019.pdf [accessed January 6, 2023].13
Electric Retrofit Ready
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 14
Some jurisdictions have reach
codes that require All Electric
single-family new construction
Provide for a future Heat Pump Water Heater (HPWH)
Make Space - If your design includes a gas or propane
water heater (storage tank or tankless style) you must
provide a space large enough to accommodate a future
Heat Pump Water Heater
This can be the space where the water heater is
installed or a space adjacent to the water heater
The space must be a minimum of 2.5’ x 2.5’ x 7’ tall
Condensate Drain -A condensate drain must be
plumbed that is no more than 2 inches higher than
the base of the installed water heater, and allows
natural draining without pump assistance
Water Heaters §150.0(n)
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 15
If the designated space is > 3 ft from water heater
Power Requirements
A dedicated 240 volt branch circuit shall be installed
within 3 feet from the designated space and shall be
rated at 30 amps minimum
¨The blank cover shall be identified as “240V ready”
The main electrical service panel shall have a reserved
space to allow for the installation of a double pole
circuit breaker for a future HPWH installation
¨The reserved space shall be permanently marked as
“For Future 240V use”
Water Heaters (cont.)§150.0(n)
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 16
Furnaces
If your design includes a furnace (central or wall style)
Power Requirements
Provide a dedicated 240 volt branch circuit wiring
within 3 feet from the furnace and accessible to the
furnace with no obstructions
The branch circuit conductors shall be rated at
30 amps minimum
¨The blank cover shall be identified as “240V ready”
¨All electrical components shall be installed in
accordance with the California Electrical Code
The main electrical service panel shall have a
reserved space to allow for the installation of a
double pole circuit breaker for a future heat pump
space heater installation
¨The reserved space shall be permanently marked
as “For Future 240V use”
§150.0(t)
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 17
If your design includes a gas or propane cooktop
Power Requirements
Provide a dedicated 240 volt branch circuit wiring that
shall be installed within 3 feet from the cooktop and
accessible to the cooktop with no obstructions
The branch circuit conductors shall be rated at 50 amps
minimum
¨The blank cover shall be identified as “240V ready”
¨All electrical components shall be installed in
accordance with the California Electrical Code
The main electrical service panel shall have a reserved
space to allow for the installation of a double pole
circuit breaker for a future electric cooktop installation
¨The reserved space shall be permanently marked as
“For Future 240V use”
Cooktops §150.0(u)
Electric cooktops require less local
ventilation than gas cooktops under
the 2022 energy code
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 18
If any dryer location is plumbed with gas or propane
Power Requirements
Provide a dedicated 240 volt branch circuit wiring
that shall be installed within 3 feet from the clothes
dryer location and accessible to the clothes dryer
location with no obstructions
The branch circuit conductors shall be rated at
30 amps minimum
¨The blank cover shall be identified as “240V ready”
¨All electrical components shall be installed in
accordance with the California Electrical Code
The main electrical service panel shall have a
reserved space to allow for the installation of a
double pole circuit breaker for a future electric
clothes dryer installation
¨The reserved space shall be permanently marked
as “For Future 240V use”
Dryers §150.0(v)
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 19
20
21
SARA includes:
The area of a building’s roof space capable of
structurally supporting a PV system AND
The area of all roof space on covered parking
areas, carports and all other newly constructed
structures on the site that are compatible with
supporting a PV system per CA Building Code
§1511.2
Exceptions:
Any roof area that has < 70% annual solar access
Occupied roof areas as specified by
CA Building Code §503.1.4
Roof area that is otherwise not available due to
compliance with other building code requirements
if confirmed by the Executive Director
Solar Access Roof Area (SARA)§150.1
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 22
Climate Zone A – CFA B – Dwelling Units
1 0.793 1.27
2 0.621 1.22
3 0.628 1.12
4 0.586 1.21
5 0.585 1.06
6 0.594 1.23
7 0.572 1.15
8 0.586 1.37
9 0.613 1.36
10 0.627 1.41
11 0.836 1.44
12 0.613 1.40
13 0.894 1.51
14 0.741 1.26
15 1.56 1.47
16 0.59 1.22
PV System Size
Table 150.1-C: CFA and Dwelling Unit
Adjustment Factors Prescriptive requirement for PV system
size is based on:
Size of home (conditioned square
footage)
Solar Access Roof Area (SARA)
Expressed as a kW (DC Rating)
DC Rating = (CFA x A) / 1000 + B
CFA = Conditioned floor area
A = CFA adjustment factor from
Table 150.1-C
B = Dwelling unit adjustment factor
from Table 150.1-C
§150.1(c)14
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 23
No PV system is required if:
The SARA is < 80 contiguous square feet
For steep-slope roofs, SARA shall not consider roof areas with a
northerly azimuth that lies between 300 degrees and 90 degrees
from true north
The minimum PV system size specified by §150.0(c)14 is < 1.8 kWdc
The building has an enforcement-authority-approved roof design, and
the enforcement authority determines it is not possible for the PV
system to meet ASCE 7-16, Chapter 7, Snow Loads
“PV System” includes panels, modules, components, supports and
attachments to the roof structure
The building is approved by the local planning department
prior to January 1, 2020 with mandatory conditions for approval
Required minimum PV system may be reduced by 25% if:
Installed in conjunction with a battery storage system
Battery storage system shall meet Joint Appendix JA12 qualification
requirements and have a minimum usable capacity of 7.5 kWh
PV Exceptions §150.1(c)14
The Performance Approach
allows for a 25% minimum PV
reduction via installation of
both PV and Battery Storage
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 24
Battery Ready Provisions
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 25
Mandatory Requirements
Basic Vision of Energy Code
All new homes to be wired to allow
the easy installation of a future
whole-house battery supply system
2022 Energy Code calls this
“Energy Storage Systems (ESS) Ready”
§150.0(s)Configuring for Battery Ready
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 26
Batteries store renewable energy
produced by onsite PV to promote
“self-consumption” of renewable
energy onsite later in the day
during peak grid periods
Buildings with PV and battery have
lower GHG emissions than
buildings with PV alone
Additional demand response
controls on battery system can be
used to respond to critical peak
periods on the grid by exporting
electricity back to the grid
Battery Storage
This is called ‘grid harmonization.’
Code Breaker: Single-family All Electric & Zero Net Carbon — 2022 Energy Code 27
2022 Energy Code: Key Changes
Multi Family Construction
Electrification Readiness
Water Heating
Space Heating
Photovoltaics and Battery
28
2022 Code Breaker: Multifamily Update Overview 29
Electric Retrofit Ready
If any common area dryer location is plumbed with gas or propane
Power Requirements
Provide a dedicated 240 volt branch circuit wiring that shall be
installed within 3 feet from the clothes dryer location
The branch circuit conductors shall be rated at either:
¨24 amps per clothes dryer
¨2.6 kVA per 10,000 Btu/hr of gas input or pipe capacity
¨Electrical capacity needed to provide the equivalent to the
gas dryers provided
Both ends shall be identified as “For Future 240V use”
¨All electrical components shall be installed in accordance with
the California Electrical Code
The main electrical service panel shall be sized to accommodate
the future dryer
Dryers in Common Areas
2022 Code Breaker: Multifamily Update Overview 30
§160.9(c)2
Two methods for calculating Prescriptive PV system size – use whichever is smaller
DC Rating = (CFA x A) / 1000 OR the total SARA x 14 W/ft²
¨CFA = Conditioned floor area in square feet
¨A = PV capacity factor specified in Table 170.2-U for the building type and climate zone
Applies to:
¨All New Construction building types specified in Table 170.2-U, OR
¨Mixed occupancy buildings where one or more of these building types constitute
at least 80% of the floor area of the building
Building Type Factor A –
Minimum PV Capacity
(W/ft2 of CFA)
Climate Zones
1, 3, 5, 16
Factor A –
Minimum PV Capacity
(W/ft2 of CFA)
Climate Zones
2, 4, 6-14
Factor A –
Minimum PV Capacity
(W/ft2 of CFA)
Climate Zone
15
Grocery 2.62 2.91 3.53
High-rise Multifamily 1.82 2.21 2.77
Office, Financial Institutions,
Unleased Tenant Space 2.59 3.13 3.80
Retail 2.62 2.91 3.53
School 1.27 1.63 2.46
Warehouse 0.39 0.44 0.58
Auditorium, Convention Center,
Hotel/Motel, Library, Medical Office
Building/Clinic, Restaurant, Theater
0.39 0.44 0.58
PV System Size -4 Stories or More
31
Table 170.2-U: PV Capacity Factors
§170.2(g)
2022 Code Breaker: Multifamily Update Overview
Buildings Where Battery Storage is Required
32
§170.2(h)
2022 Code Breaker: Multifamily Update Overview
All Multifamily buildings 4 stories or more required by §170.2(g) to have a PV system
shall also have a battery storage system meeting the minimum requirements of Reference Joint
Appendix JA12
The rated energy capacity and rated power capacity shall be not less than the values
determined by Equation 170.2-E and Equation 170.2-F (shown on next set of slides)
If the building includes more than one of the space types listed below:
¨The total battery system capacity for the building shall be determined by
applying Equations 170.2-E and 170.2-F to each of the listed space types
and summing the capacities determined for each space type and equation
Battery values are based upon a ratio of the kW rating of the PV that is required
Building Type
Storage-to-PV Ratio
Grocery
High-rise Multifamily
Office, Financial Institutions, Unleased Tenant Space
Retail
School
Warehouse
Auditorium, Convention Center, Hotel/Motel, Library,
Medical Office Building/Clinic, Restaurant, Theater
Table 170.2-V: Battery Storage Capacity Factors
Key Battery Performance Values
Nonresidential & Multifamily Standards Solar and Battery 33
Think of a bathtub as an analogy for a battery storage system.
The flow of water into and out of the “tub” corresponds to the instantaneous
Power Capacity measured in kW.
The quantity of water that the “tub” can hold is the Energy Capacity
measured in kWh.
Prescriptive Requirement
Climate Zones 2-15:
Space conditioning system shall
be a heat pump
Climate Zones 1 and 16:
Space conditioning system shall
be a dual-fuel heat pump
Prescriptive Requirement
Climate Zones 1-15:
Space conditioning system shall
be a heat pump
Climate Zone 16:
Space conditioning system shall
be an air conditioner with
furnace
2022 Code Breaker: Multifamily Update Overview 34
Space Conditioning (Dwelling Units Only)
3 Stories or Less 4 Stories or More
§170.2
There are no Prescriptive heat pump space conditioning requirements
for Multifamily Common Areas
Dwelling Unit Requirements:
Kitchen hood – §160.2(b):
¨New airflow ventilation and
verification requirements for kitchen
hoods dependent upon range
utility type (electric or natural gas)
Mechanical Mandatory Measures
2022 Code Breaker: Multifamily Update Overview 35
§160
Dwelling Unit
Floor Area (ft2)
Hood Over
Electric Range
Hood Over Natural
Gas Range
>1500 50% CE or 110 cfm 70% CE or 180 cfm
>1000 - 1500 50% CE or 110 cfm 80% CE or 250 cfm
750 - 1000 55% CE or 130 cfm 85% CE or 280 cfm
<750 65% CE or 160 cfm 85% CE or 280 cfm
Individual Dwelling Unit Water Heating
Individual Water Heater Prescriptive
Requirements Serving Dwelling Units:
1.A single 240 volt Heat Pump Water
Heater (HPWH) with:
¨Climate Zones 1 and 16:
Compact hot water distribution system
¨Climate Zone 16:
Drain water heat recovery system
OR
2.A single NEEA-rated Tier 3 Heat Pump
Water Heater with:
¨Climate Zone 16:
Drain water heat recovery system
OR
3.A gas or propane instantaneous water
heater with an input of 200,000 Btu/hr or
less
2022 Code Breaker: Multifamily Update Overview 36
§170.2(d)1
There are no Prescriptive
DHW requirements
for Multifamily Common Areas
Heat Pump
Water Heater(s)
Compressor
Primary
Storage Tank(s)
Temperature
Maintenance System
Recirculation
Loop Tank
2022 Code Breaker: Multifamily Update Overview 37
Central Heat Pump Water Heating
Design documentation shall be provided in accordance with
JA14.4
§170.2(d)2
Single-pass primary heat
pump water heater, the
primary thermal storage
tanks shall be piped in
series for multiple tanks
The primary storage tank
temperature setpoint
shall be ≥ 135°F
Recirculation system
meeting mandatory
requirements of §110.3(c)
required for buildings with
nine or more dwelling
units
Must be electric if auxiliary
heating is needed, and be
capable of multi-pass
water heating operation
Multi-pass primary heat
pump water heater, the
primary thermal storage
tanks shall be piped in
parallel for multiple tanks
(Performance baseline is
single-pass)
Meet the mandatory
requirements for tank
insulation of §110.3(c)3
Capable of automatically
controlling the
recirculation pump
operation based on hot
water demand and hot
water return temperature
Temperature setpoint
shall be at least 10°F
lower than the primary
thermal storage tank
temperature setpoint
Minimum heat pump water
heater compressor cut-off
temperature ≤ 40°F
Recirculation return loop
shall not directly connect to
the primary thermal
storage tanks
Recirculation return loop
shall not directly connect to
the primary heat pump
water heater inlet
The hot water return from
the recirculation loop
shall connect to a
recirculation loop tank
Central Gas Water Heating
Required Prescriptively in Central Gas System
Serving Multiple Dwelling Units:
Gas or Propane System with the following
components:
1.Climate Zones 1-9:
Total input rating ≥ 1,000,000 Btu/hr
with minimum thermal efficiency of 90%
2.A recirculation system
¨Required for buildings with 8 or more
dwelling units
◊No longer required to be dual loop
3.A solar water-heating system with a
minimum solar savings fraction of:
¨Climate Zones 1-9: 0.20
¨Climate Zones 10-16: 0.35
¨Solar can be reduced by 5% with a
drain water heat recovery system
2022 Code Breaker: Multifamily Update Overview 38
§170.2(d)3
2022 Energy Code: Key Changes
Nonresidential Construction
Water Heating
Space Heating
Photovoltaics and Battery
39
Required Prescriptively:
(Single zone systems with direct expansion cooling ≤ 240,000 Btu/hr)
School Building Spaces
Climate Zones 2-15: Heat Pump
Climate Zones 1, 16: Dual-fuel Heat Pump
Retail and Grocery Building Spaces
Climate Zones 2-15: Heat Pump
Climate Zones 1, 16:
¨Cooling capacity < 65,000 Btu/hr: Furnace A/C
¨Cooling capacity ≥ 65,000 Btu/hr: Dual-fuel Heat Pump
Office, Financial Institution and Library Building Spaces
Climate Zones 1-15: Heat Pump
Climate Zone 16:
¨Cooling capacity < 65,000 Btu/hr: Furnace A/C
¨Cooling capacity ≥ 65,000 Btu/hr: Dual-fuel Heat Pump
Office Spaces in Warehouses
Climate Zones 1-16:Heat Pump
2022 Code Breaker: Nonresidential All Electric 40
HVAC Selections §140.4(a)2
Does NOT apply to systems
utilizing heat recovery for
space heating,
nor additions & alterations
2022 Code Breaker: Nonresidential All Electric 41
Domestic Hot Water §140.5
Required Prescriptively:
School buildings < 25,000 ft2 and < 4 stories
¨Climate Zones 2 – 15
A heat pump water-heating (HPWH) system
¨Water-heating system serving an individual bathroom
space may be an instantaneous electric water heater
Hotel/Motel Occupancies
¨Similar to Multifamily (the requirements of §140.5 are the
same as §170.2)
All Other Nonresidential Occupancies
¨Any water heater
¨Must be at least 90% efficient if the combined input rate is
≥ 1,000,000 Btu/hr
◊Individual gas water heaters with input capacity
≤ 100,000 Btu/hr shall not be included in the total
system input rate
Community Shared Solar or Battery Systems
2022 Code Breaker: Nonresidential All Electric 42
Allows a common shared system to offset solar and/or battery requirements
Must be operational before final permit signed off on building
Must provide equivalent or better performance than what is specified for building
Must provide benefit to the building for 20 years minimum
Cannot transfer benefit to another building
Located on a distribution system of the participating buildings
No larger than 20 MW
§10-115
PV System Size
2022 Code Breaker: Nonresidential All Electric 43
§140.10(a)
Two methods for calculating PV system size – use whichever is smaller
DC Rating = (CFA x A) / 1000 OR the total SARA x 14 W/ft²
¨CFA = Conditioned floor area in square feet
¨A = PV capacity factor specified in Table 140.10-A for the building type and climate zone
Applies to:
¨All New Construction building types specified in Table 140.10-A , OR
¨Mixed occupancy buildings where one or more of these building types constitute
at least 80% of the floor area of the building (must calculate PV per space type and sum
together)
Building Type Factor A –
Minimum PV Capacity
(W/ft2 of CFA)
Climate Zones
1, 3, 5, 16
Factor A –
Minimum PV Capacity
(W/ft2 of CFA)
Climate Zones
2, 4, 6-14
Factor A –
Minimum PV Capacity
(W/ft2 of CFA)
Climate Zone
15
Grocery 2.62 2.91 3.53
Office, Financial Institutions,
Unleased Tenant Space 2.59 3.13 3.80
Retail 2.62 2.91 3.53
School 1.27 1.63 2.46
Warehouse 0.39 0.44 0.58
Auditorium, Convention Center,
Hotel/Motel, Library, Medical
Office Building/Clinic, Restaurant,
Theater
0.39 0.44 0.58
Excerpt of Table 140.10-A: PV Capacity Factors
2022 Code Breaker: Nonresidential All Electric 44
Solar Photovoltaic Exceptions §140.10(a)
Exceptions –No PV system is Prescriptively required when:
The total of all available Solar Access Roof Area (SARA) is < 3% of the conditioned floor area
The required PV system size is < 4 kWdc
The SARA contains < 80 contiguous ft²
The building has an enforcement-authority-approved roof design, and the enforcement authority
determines it is not possible for the PV system to meet ASCE 7-16, Chapter 7, Snow Loads
¨“PV System” includes panels, modules, components, supports and attachments to the roof structure
The structure is a multi-tenant building in an area where a load serving entity does not provide
either a Virtual Net Energy Metering (VNEM) or community solar program
2022 Code Breaker: Nonresidential All Electric 45
§140.10(b)
All buildings required by §140.10(a) to have a PV system shall also have a battery storage system
meeting the minimum qualification requirements of Reference Joint Appendix JA12
The rated energy capacity and rated power capacity shall be not less than the values
determined by Equation 140.10-B and Equation 140.10-C
If the building includes more than one of the space types listed below:
¨The total battery system capacity for the building shall be determined by
applying Equations 140.10-B and 140.10-C to each of the listed space types
and summing the capacities determined for each space type and equation
Battery values are based upon a ratio of the kW rating of the PV that is required
Building Type
Storage-to-PV Ratio
Grocery
Office, Financial Institutions, Unleased Tenant Space
Retail
School
Warehouse
Auditorium, Convention Center, Hotel/Motel, Library,
Medical Office Building/Clinic, Restaurant, Theater
Excerpt of Table 140.10-B: Battery Storage Capacity Factors
Buildings Where Battery Storage is Required
Exceptions
2022 Code Breaker: Nonresidential All Electric 46
Battery Storage Exceptions
No battery storage system is required:
¨If the installed PV system size is < 15% of the size
determined by Equation 140.10-A
¨In buildings with battery storage system requirements
with < 10 kWh rated capacity
¨In offices, schools and warehouses in Climate Zone 1
¨In single-tenant buildings with < 5,000 ft2 of conditioned
floor area
For Multi-tenant Buildings:
The energy capacity and power capacity of the battery
storage system shall be based on the tenant spaces with
more than 5,000 ft2 of conditioned floor area
§140.10(b)
2022 Code Breaker: Nonresidential All Electric 47
Fact Sheets on Energy Code Ace
AVAILABLE NOW
What’s New in 2022?
What’s Changed?
AVAILABLE NOW
What’s New in 2022?
What’s Changed?
Because everyone loves
a good cheat sheet…
Because everyone loves
a good cheat sheet…
AVAILABLE NOW
What’s New in 2022?
What’s Changed?
Because everyone loves
a good cheat sheet…
Single Family
Edition
Multifamily
Edition
2022 Code Breaker: Nonresidential All Electric 48
Q & Ace
Register with Energy Code Ace
Register with Energy Code Ace to stay-up-to-date with new offerings
https://energycodeace.com
Create an
account
1Look for email from
admin@energycodeace.com to
verify your email address
2
Be sure to select at least
one Role under
“Professional Information”
3
2022 Code Breaker: Nonresidential All Electric 49