Illustration

String inverterTesla

Tesla 1534000-xx-y

Name: Tesla 1534000-xx-y
Brand: Tesla

String inverter. 2 models, 3.34 kW–3.8 kW AC at 208 V / 240 V.

UL 1741 SBCEC listed · Jan 21, 2021Installed in 4 SoCal permits

Model

Rated AC power3.8 kW
CEC weighted efficiency97.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · building permits · 2 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB	In permits
1534000-xx-y	3.34 kW	208 V	3.34 kW	3.34 kW	97.5%	270–480 V	Jan 21, 2021	SB	4
1534000-xx-y	3.8 kW	240 V	3.8 kW	3.8 kW	97.5%	270–425 V	Jan 21, 2021	SB	4

DC input (PV side)

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library

CEC test DC voltages (min / nom / max)270 / 350 / 425 V
DC input at rated output (CEC test)3.89 kW

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library

CEC weighted efficiency97.5%
Night-time standby (tare)4.66 W
Power to start converting28 W

CEC weighted efficiency is measured by an accredited lab at six power levels and three DC voltages — the number to compare between inverters.

Grid & smart-inverter certification

CEC Grid Support Inverter List (Oct 7, 2026)

UL 1741 SB (3rd ed.)Yes — Intertek, certificate Oct 13, 2022
UL 1741 SA (SA8–SA13)Yes — Intertek
Volt-VAr with reactive power priority (SA13)Yes
Freq-Watt / Volt-Watt (SA14–15)Yes
Disable permit service / limit active power (SA17–18)Yes
CSIP (IEEE 2030.5) conformanceVia gateway during testing (Y*)
Monitor key data & scheduling (Rule 21 Phase 3)Yes (attested Jan 21, 2021)
CEC listedJan 21, 2021
Last CEC updateJan 3, 2023

UL 1741 SB is required for new interconnections in California (Rule 21) since 2026.

Panel compatibility & string sizing

NLR SAM inverter library · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

1534000-xx-y: max DC 425 V · MPPT 270–425 V (CEC test window)

Most-permitted panels in Southern California

Panel	Power	Voc cold	Vmp hot	Panels per string	Installed together
Qcells Q.PEAK DUO BLK ML-G10.C+ 410	410 W	48.1 V	30.6 V	no fit	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	no fit	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	no fit	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	no fit	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	10–10	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	10–10	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	10–10	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	10–10	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	6–6	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	no fit	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	10–10	—
Tesla TSP-420	420 W	43.4 V	27.7 V	no fit	—

Voltage check only, from CEC panel data and NLR weather for the city. Final design must follow the inverter manual and NEC 690.7.

Installed in Southern California

building permits

Permits name it

Jun 2021 – Jul 2025

Jurisdictions so far

LA County (unincorp.) (4)

4.8 kW

Typical system

median of 4 permits

Permits over time

Model named in permit

1534000-xx-y

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

Compare with similar 3.8 kW inverters

CEC Grid Support Inverter List (Oct 7, 2026) · building permits

Inverter	Power	CEC weighted eff.	DC test window	UL 1741 SB	Latest CEC	SoCal permits
Tesla 1534000-xx-y	3.34 kW–3.8 kW	97.5%	270–425 V	Yes	2021	8
GoodWe GEPx.x-1-US30	4.33 kW–11.4 kW	97.0%	143–500 V	Yes	2022	—
GoodWe GWxxxx-MS-US30	4.33 kW–9.6 kW	97.0%	143–500 V	Yes	2022	—
GoodWe GWxxxxA-MS	5 kW–9.6 kW	97.5%	210–480 V	Yes	2021	—
ABB UNO-DM-5.0-TL-PLUS-US-SZ-RA-U	5 kW–5 kW	96.5%	200–480 V	No	2020	—

Same type and grid voltage, power range covering this model; same fields from the same sources.

About Tesla

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerTesla
Listed in CEC asTesla Inc.
Websitetesla.com
Models on CEC lists55

Other series

1538000-xx-y · 74 permits

Questions & answers

How efficient is the Tesla 1534000-xx-y?

The California Energy Commission lists a weighted efficiency of 97.5% for Tesla 1534000-xx-y models, measured at six power levels and three DC voltages.

What sizes does the Tesla 1534000-xx-y come in?

The CEC list includes 2 models from 3.34 kW to 3.8 kW AC: 1534000-xx-y, 1534000-xx-y.

Is the Tesla 1534000-xx-y certified to UL 1741 SB?

Yes — the CEC Grid Support Inverter List shows UL 1741 SB for all models.

What is the 1534000-xx-y’s DC input voltage range?

CEC tested it at 270–425 V DC.

Sources

California Energy Commission — Grid Support Inverter List (solar and battery inverters), data as of Oct 7, 2026. Manufacturer-reported, confirmed by CEC against certificates and test reports.
NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
California Energy Commission — PV Module List (module electrical data for the compatibility check).
Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Jun 2021 – Jul 2025). Equipment matched from permit descriptions by model number.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).