Illustration

Hybrid inverterDelta Electronics

Delta Electronics E6-TL-US

Name: Delta Electronics E6-TL-US
Brand: Delta Electronics

Hybrid inverter, dc-coupled hybrid (pv + battery). 8 models, 3.33 kW–9.6 kW AC at 208 V / 240 V.

UL 1741 SBCEC listed · Aug 1, 2018Installed in 28 SoCal permits

Model

Rated AC power5.76 kW
CEC weighted efficiency97.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · building permits · 8 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB	In permits
E4-TL-US	3.33 kW	208 V	3.36 kW	3.36 kW	97.5%	200–480 V	Aug 11, 2020	SB	11
E4-TL-US	3.84 kW	240 V	3.87 kW	3.87 kW	97.5%	200–400 V	Aug 11, 2020	SB	11
E6-TL-US	4.99 kW	208 V	4.99 kW	4.99 kW	97.0%	200–480 V	Aug 1, 2018	SB	13
E6-TL-US	5.76 kW	240 V	5.76 kW	5.76 kW	97.5%	200–480 V	Aug 1, 2018	SB	13
E8-TL-US	6.66 kW	208 V	6.66 kW	6.66 kW	97.5%	270–480 V	Aug 1, 2018	SB	—
E8-TL-US	7.68 kW	240 V	7.68 kW	7.68 kW	97.5%	270–480 V	Aug 1, 2018	SB	—
E10-TL-US	8.32 kW	208 V	8.4 kW	8.4 kW	97.0%	280–480 V	Jun 1, 2022	SB	4
E10-TL-US	9.6 kW	240 V	9.67 kW	9.67 kW	97.5%	280–480 V	Jun 1, 2022	SB	4

Some models are also on the CEC Battery Inverter list — one product, two listings.

DC input (PV side)

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

CEC test DC voltages (min / nom / max)200 / 380 / 480 V
DC input at rated output (CEC test)5.92 kW

Efficiency

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

CEC weighted efficiency97.5%
Night-time standby (tare)2.25 W
Power to start converting23.5 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 — CSA Group, certificate Sep 15, 2023
UL 1741 SA (SA8–SA13)Yes — CSA Group
Firmware tested (SA)1.6.2
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 Jun 1, 2022)
Power control system (PCS)Stated in CEC listing (power control system)
Built-in meterYes
CEC listedAug 1, 2018
Last CEC updateApr 2, 2024

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

Monitoring & communication

CEC Grid Support Inverter List (Oct 7, 2026)

Built-in production meterBuilt-in meter (CEC listing)

Panel compatibility & string sizing

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

CityColdest air, °CHottest cell, °C

E6-TL-US: max DC 480 V · MPPT 200–480 V (CEC test window)

Most-permitted panels in Southern California

Panel	Power	Voc cold	Vmp hot	Panels per string	Installed together
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	8–12	15
Qcells Q.PEAK DUO BLK ML-G10.C+ 410	410 W	48.1 V	30.6 V	7–9	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	7–9	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	8–12	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	8–11	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	8–11	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	8–11	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	8–11	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	5–6	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	8–12	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	8–11	—
Tesla TSP-420	420 W	43.4 V	27.7 V	8–11	—

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

Battery & storage pairings

building permits

Batteries installed with it in SoCal

Tesla Powerwall

LG Energy Solution RESU 10H Prime

LG Energy Solution RESU 10H

What it's installed with

building permits

Panels

JA Solar JAM54S31-xxx/MR

LONGi Hi-MO 4

LONGi Hi-MO 6

Batteries

Tesla Powerwall

LG Energy Solution RESU 10H Prime

LG Energy Solution RESU 10H

Gateways & interfaces

Tesla Backup Gateway

SnapNrack (model not specified)

Permits naming both; 24 of 28 permits list other equipment.

Installed in Southern California

building permits

Permits name it

Feb 2021 – Sep 2024

Jurisdictions so far

LA County (unincorp.) (26), Huntington Beach (1), Palmdale (1)

6.3 kW

Typical system

median of 25 permits

Permits over time

Model named in permit

E6-TL-US

E4-TL-US

E10-TL-US

Top ZIP codes

ZIP 913845
ZIP 910014
ZIP 902903
ZIP 906043
ZIP 913812
ZIP 912142
Other ZIP codes8

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.

Who installs Ex-TL-US in SoCal

building permits · CSLB License Master

Sunrun

Lehi · CSLB #750184

1 installJan 2024Palmdale

Compare with similar 5.76 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
Delta Electronics Ex-TL-US	3.33 kW–9.6 kW	97.5%	200–480 V	Yes	2022	56
SolarEdge SExxxxH-US	3 kW–11.4 kW	99.0%	360–480 V	Yes	2025	1,046
Qcells Q.VOLT Hx.xSX	3.8 kW–7.6 kW	97.5%	175–500 V	Yes	2023	25
SolarEdge SExxxxxA-US	3.8 kW–11.4 kW	98.0%	320–500 V	No	2024	18
Growatt MIN xxxxTL-XH-US	2.63 kW–11.4 kW	98.0%	125–480 V	Yes	2021	15

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

About Delta Electronics

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerDelta Electronics
Listed in CEC asDelta Electronics
Websitedelta-americas.com
Models on CEC lists138

Other series

S12_BDIE8 Plus-TL-USEx_BDI

Questions & answers

How efficient is the Delta Electronics Ex-TL-US?

The California Energy Commission lists a weighted efficiency of 97.0–97.5% for Delta Electronics Ex-TL-US models, measured at six power levels and three DC voltages.

What sizes does the Delta Electronics Ex-TL-US come in?

The CEC list includes 8 models from 3.33 kW to 9.6 kW AC: E4-TL-US, E4-TL-US, E6-TL-US, E6-TL-US, E8-TL-US, E8-TL-US, E10-TL-US, E10-TL-US.

Is the Delta Electronics Ex-TL-US certified to UL 1741 SB?

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

Can the Delta Electronics Ex-TL-US be used with a battery?

The CEC lists it as a dc-coupled hybrid (pv + battery). In Southern California permits it was installed with Tesla Powerwall, LG Energy Solution RESU 10H Prime, LG Energy Solution RESU 10H.

What is the E6-TL-US’s DC input voltage range?

CEC tested it at 200–480 V DC.

Who installs it in Southern California?

Building permits name this series 28 times (Feb 2021 – Sep 2024). The most active licensed installers are Sunrun.

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) (Feb 2021 – Sep 2024); City of Huntington Beach (Jun 2024); City of Palmdale (Jan 2024). Equipment matched from permit descriptions by model number.
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).