Illustration

Hybrid inverterTigo Energy

Tigo Energy TSI-7.6K-US

Name: Tigo Energy TSI-7.6K-US
Brand: Tigo Energy

Hybrid inverter, dc-coupled hybrid (pv + battery). 18 models, 2.63 kW–11.4 kW AC at 208 V / 240 V. used with power optimizers.

UL 1741 SBCEC listed · Feb 1, 2022Installed in 4 SoCal permits

Model

Rated AC power7.52 kW
CEC weighted efficiency97.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · building permits · 18 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB	In permits
TSI-3.0K-US	2.63 kW	208 V	2.63 kW	2.63 kW	96.5%	125–480 V	Feb 1, 2022	SB	—
TSI-3.0K-US	3.1 kW	240 V	3.1 kW	3.1 kW	97.0%	125–480 V	Feb 1, 2022	SB	—
TSI-3.8K-US	3.32 kW	208 V	3.32 kW	3.32 kW	97.0%	160–480 V	Feb 1, 2022	SB	1
TSI-3.8K-US	3.89 kW	240 V	3.89 kW	3.89 kW	97.0%	160–480 V	Feb 1, 2022	SB	1
TSI-5.0K-US	4.28 kW	208 V	4.28 kW	4.28 kW	97.5%	210–480 V	Feb 1, 2022	SB	—
TSI-5.0K-US	4.94 kW	240 V	4.94 kW	4.94 kW	97.5%	210–480 V	Feb 1, 2022	SB	—
TSI-6.0K-US	5.14 kW	208 V	5.14 kW	5.14 kW	97.0%	170–480 V	Feb 1, 2022	SB	—
TSI-6.0K-US	5.92 kW	240 V	5.92 kW	5.92 kW	97.0%	170–480 V	Feb 1, 2022	SB	—
TSI-7.6K-US	6.58 kW	208 V	6.58 kW	6.58 kW	97.0%	212–480 V	Feb 1, 2022	SB	3
TSI-7.6K-US	7.52 kW	240 V	7.52 kW	7.52 kW	97.5%	212–480 V	Feb 1, 2022	SB	3
TSI-8.2K-US	8.2 kW	208 V	7.17 kW	7.17 kW	97.5%	250–480 V	Feb 1, 2022	SB	—
TSI-8.2K-US	8.2 kW	240 V	8.25 kW	8.25 kW	97.5%	250–480 V	Feb 1, 2022	SB	—
TSI-9.0K-US	9 kW	208 V	7.87 kW	7.87 kW	97.5%	250–480 V	Feb 1, 2022	SB	—
TSI-9.0K-US	9 kW	240 V	9.06 kW	9.06 kW	97.5%	250–480 V	Feb 1, 2022	SB	—
TSI-10.0K-US	10 kW	208 V	8.76 kW	8.76 kW	97.5%	250–480 V	Feb 1, 2022	SB	—
TSI-10.0K-US	10 kW	240 V	10.1 kW	10.1 kW	97.5%	250–480 V	Feb 1, 2022	SB	—
TSI-11.4K-US	11.4 kW	208 V	10 kW	10 kW	97.5%	250–480 V	Feb 1, 2022	SB	—
TSI-11.4K-US	11.4 kW	240 V	11.5 kW	11.5 kW	98.0%	250–480 V	Feb 1, 2022	SB	—

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)212 / 380 / 480 V
DC input at rated output (CEC test)7.74 kW

Efficiency

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

CEC weighted efficiency97.5%
Night-time standby (tare)1.59 W
Power to start converting35.2 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 Aug 2, 2022
UL 1741 SA (SA8–SA13)Yes — Intertek
Firmware tested (SA)UE1.0
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 Feb 1, 2022)
Power control system (PCS)Stated in CEC listing (power control system)
CEC listedFeb 1, 2022
Last CEC updateOct 11, 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

TSI-7.6K-US: max DC 480 V · MPPT 212–480 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	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	9–12	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	9–12	—
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	9–12	—
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	—

Usually installed with power optimizers: string length follows the optimizer rules, not panel voltage — use the manufacturer’s designer.

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

Tigo TSB

What it's installed with

building permits

Panels

Solarever (model not specified)

Optimizers

Tigo TS4

Batteries

Tigo TSB

Permits naming both; 4 of 4 permits list other equipment.

Installed in Southern California

building permits

Permits name it

May 2023 – May 2024

Jurisdictions so far

LA County (unincorp.) (4)

8 kW

Typical system

median of 4 permits

Permits over time

Model named in permit

TSI-7.6K-US

TSI-3.8K-US

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 7.52 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
Tigo Energy TSI-x.xK-US	2.63 kW–11.4 kW	97.5%	212–480 V	Yes	2022	8
SolarEdge SExxxxH-US	3 kW–11.4 kW	99.0%	360–480 V	Yes	2025	1,046
Delta Electronics Ex-TL-US	3.33 kW–9.6 kW	97.5%	200–480 V	Yes	2022	28
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

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

About Tigo Energy

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerTigo Energy
Listed in CEC asTigo Energy, Inc
Websitetigoenergy.com
Models on CEC lists159

Questions & answers

How efficient is the Tigo Energy TSI-x.xK-US?

The California Energy Commission lists a weighted efficiency of 96.5–98.0% for Tigo Energy TSI-x.xK-US models, measured at six power levels and three DC voltages.

What sizes does the Tigo Energy TSI-x.xK-US come in?

The CEC list includes 18 models from 2.63 kW to 11.4 kW AC: TSI-3.0K-US, TSI-3.0K-US, TSI-3.8K-US, TSI-3.8K-US, TSI-5.0K-US, TSI-5.0K-US, TSI-6.0K-US, TSI-6.0K-US….

Is the Tigo Energy TSI-x.xK-US certified to UL 1741 SB?

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

Can the Tigo Energy TSI-x.xK-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 Tigo TSB.

What is the TSI-7.6K-US’s DC input voltage range?

CEC tested it at 212–480 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) (May 2023 – May 2024). 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).