13.5 kWh

Home battery systemTesla

Tesla Powerwall 3

13.5 kWh · 5–11.5 kW · Lithium Ion, Lithium Iron Phosphate · direct PV input · 5 configurations

UL 9540UL 1741 SBCEC listed · Mar 13, 2023Installed in 2,115 SoCal permits

Nameplate energy13.5 kWh
Continuous power5–11.5 kW
Round trip (AC)89%
Warranty10 years
ChemistryLithium Ion, Lithium Iron Phosphate

Overview

CEC Energy Storage System List

Powerwall 3: 13.5 kWh nameplate energy; 5–11.5 kW continuous; lithium ion, lithium iron phosphate; accepts solar panels directly (DC-coupled); 10 years warranty; named in 2,115 Southern California permits.

Models & configurations

CEC Energy Storage System List · 5 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
1707000-XX-Y {5kW}	13.5 kWh	5 kW	240 V	89%	Apr 1, 2026
1707000-XX-Y {5.75kW}	13.5 kWh	5.75 kW	240 V	89%	Nov 1, 2024
1707000-XX-Y {7.6kW}	13.5 kWh	7.6 kW	240 V	89%	Nov 1, 2024
1707000-XX-Y {10kW}	13.5 kWh	10 kW	240 V	89%	Nov 1, 2024
1707000-XX-Y {11.5kW}	13.5 kWh	11.5 kW	240 V	89%	Mar 13, 2023

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)13.5 kWh
Total energy (datasheet)13.5 kWh
Rated power (CEC)5–11.5 kW
Max continuous discharge (CEC)5–11.5 kW
Full-power discharge timeabout 1.2 h at full power
Round-trip efficiency (AC-AC)89%
ChemistryLithium Ion, Lithium Iron Phosphate
Grid connection240 V
Phasesplit phase
Battery voltage range (DC)52–92 V

Charging from solar in Southern California

NLR PVWatts v8 · Cali-Graf calculation · CEC Energy Storage System List

City	December	June
Los Angeles	4.2 kW	2.5 kW
Palmdale	3.9 kW	2.3 kW
Chula Vista	3.6 kW	2.6 kW
Huntington Beach	4 kW	2.7 kW
Riverside	4 kW	2.4 kW
Santa Clarita	4 kW	2.4 kW

Solar array size that refills the battery from empty in one average day, before the home uses any of it (NLR PVWatts v8, 20° south roof).

Direct PV inputYes

Stacking & expansion

CEC Energy Storage System List · Tesla datasheet

Max units per systemup to 7 units
Expansion units1807000-XX-Y
Installs with expansion15% of SoCal installs include an expansion unit

Inverter & compatible equipment

CEC Energy Storage System List

Integrated inverter1707000-XX-Y {240V, 10kW}, 1707000-XX-Y {240V, 11.5kW}
Inverter CEC weighted efficiency96.2–97.5%
Inverter continuous output (CEC-measured)10–11.5 kW
Accepts solar input (hybrid)Yes
Rated AC power (SAM)10–11.5 kW
Direct PV inputYes

Installation & environment

CEC Energy Storage System List · Tesla datasheet

Installation locationindoor/outdoor
Ingress protectionIP65
Enclosure typeNEMA 3R, NEMA 4X
Mountingfloor, wall

Warranty

CEC Energy Storage System List · Tesla datasheet

Warranty term10 years

Safety listings

CEC Energy Storage System List

UL 9540 (energy storage system)Certified by Intertek
Certificate date & editionFeb 16, 2026 · Ed. 3 : 2023
UL 9540A (fire propagation test)Yes
Other standards on datasheetUL 1741, IEEE 1547, UL 1699B, UL 9540A, UL 9540, UL 1973, UL 3741, CSA C22.2, FCC, UL 1642, UN 38.3

UL 9540 certifies the whole storage system; UL 9540A is the fire-propagation test that fire codes ask for indoors and near walls.

California grid & code compliance

CEC Energy Storage System List

UL 1741 SB (IEEE 1547-2018)Yes
UL 1741 SA (Rule 21)No
CSIP (IEEE 2030.5)Yes
JA12 declaration (Title 24)Yes
JA12 control strategiesBasic, TOU, Advance DR
CEC noteThe Powerwall 3 can only be used for 5kWh compliance cycling capacity. If CF1R requires more than 5kWh compliance cycling capacity, this product cannot be used.
Last CEC updateJun 22, 2026
Monitor Key Data schedulingNo

Full specifications

CEC Energy Storage System List · Tesla datasheet

Communicationwi-fi, ethernet, cellular, lte, 4g, can, rs485
Manufacturer websitetesla.com

Installs in Southern California

building permits

2,115

Permits name it

Aug 2019 – Oct 2026

Jurisdictions so far

LA County (unincorp.) (1651), Palmdale (273), Chula Vista (111), Hunti

Units per install

median of 1464 permits

Permits over time

Installed together with

Qcells Q.PEAK DUO

123

Qcells Q.TRON

112

LONGi Hi-MO 5

Qcells Q.MI

JA Solar JAM54S31-xxx/MR

Silfab Solar SIL-xxxQD

Top ZIP codes

ZIP 91381347
ZIP 93551163
ZIP 93550104
ZIP 9100192
ZIP 9138483
ZIP 9355259
ZIP 9174557
ZIP 9060447
Other ZIP codes19

Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.), Santa Monica come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Who installs Powerwall 3

building permits · CSLB License Master

Sunrun

Lehi · CSLB #750184

40 installsAug 2024 – Sep 2026Chula Vista, Huntington Beach

Lgcy Electric

Lehi · CSLB #1099095

37 installsOct 2025 – Oct 2026Chula Vista, Palmdale

Solar Shoppers Construction

Palmdale · CSLB #1019939

32 installsAug 2024 – Aug 2026Palmdale

Qcells For New Homes

Irvine · CSLB #1090641

31 installsOct 2025 – Sep 2026Palmdale, Chula Vista

Tesla Energy Operations Inc

Fremont · CSLB #888104

31 installsJun 2024 – Sep 2026Palmdale, Huntington Beach

Bright Ops

Worcester · CSLB #1020761

19 installsJun 2025 – Mar 2026Palmdale, Chula Vista

Esp Contracting

Torrance · CSLB #619149

14 installsJul 2024 – Jun 2026Palmdale, Huntington Beach

Advanced Conservation Systems Inc

Lancaster · CSLB #508902

13 installsMar 2025 – Oct 2026Palmdale

Capital Energy LLC

Tempe · CSLB #1142165

12 installsJul 2026 – Sep 2026Palmdale

Stellar Solar Electric

Oceanside · CSLB #749095

12 installsApr 2026 – Oct 2026Chula Vista, Huntington Beach

Baker Home Energy

Escondido · CSLB #858088

8 installsMar 2026 – Sep 2026Chula Vista

Homelink Solar

Chino · CSLB #1117534

8 installsOct 2025 – Feb 2026Palmdale

Fulfill Power Inc

Temecula · CSLB #1115791

7 installsJun 2026 – Sep 2026Palmdale

Sun Solar Energy Solutions

Bakersfield · CSLB #1065395

7 installsAug 2024 – Oct 2025Palmdale

Peak Energy Group

Eden · CSLB #1140196

6 installsApr 2026 – Jun 2026Palmdale, Chula Vista

and 66 more licensed installers

Compare with similar batteries

CEC Energy Storage System List

Battery	Energy	Continuous power	Chemistry	Warranty	SoCal permits
Tesla AC Powerwall	13.5 kWh	5 kW	Lithium Ion	—	394
Tesla Powerwall +	13.5 kWh	5 kW	Lithium Ion	10 years	264
Enphase Energy ENCHARGE-10	10.1 kWh	3.84 kW	Lithium Iron Phosphate	10 years	197
Enphase Energy IQ Battery 10C	10 kWh	7.08 kW	Lithium Iron Phosphate	—	118
Enphase Energy ENCHARGE-10T	10.1 kWh	3.84 kW	Lithium Iron Phosphate	15 years	105
Qcells Q.HOME CORE Ax.xBx.x	13.1 kWh	7.6 kW	Lithium Ion	—	13

Same segment, similar capacity; each row from the same sources.

Documents

manufacturer documents

PDF
Powerwall 3 Datasheet
Datasheet · Sep 2026

Questions & answers

How much energy does the Tesla Powerwall 3 store?

13.5 kWh nameplate, per the California Energy Commission list.

Can you add more Powerwall 3 units?

Yes — up to 7 units per system; expansion: 1807000-XX-Y.

Can the Powerwall 3 be installed outdoors?

Installation location per the datasheet: indoor/outdoor; enclosure NEMA 3R, NEMA 4X.

What warranty does the Powerwall 3 have?

10 years (datasheet).

Is the Powerwall 3 UL 9540 certified?

Yes — the CEC list shows UL 9540 certification (certified by intertek).

Who installs the Powerwall 3 in Southern California?

Building permits name it 2,115 times. The most active licensed installers are Sunrun, Lgcy Electric, Solar Shoppers Construction.

Sources

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
Tesla — datasheet Powerwall 3 Datasheet.
Tesla — document library on the manufacturer’s website (links above).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
Building permits — Southern California permit portals. Equipment matched from permit descriptions.
Contractors State License Board — License Master (contractor names and license status), as of Oct 5, 2026.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).