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String inverterKACO new energy

KACO new energy KACO blueplanet 137 TL3 M1 WM OD IIPX

String inverter. 2 models, 125 kW–137 kW AC at 600 V.

CEC listed · Feb 11, 2020

Model

Rated AC power137 kW
CEC weighted efficiency99.0%

Models & power ratings

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

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
KACO blueplanet 125 TL3 M1 WM OD IIPX	125 kW	600 V	138.7 kW	138.7 kW	99.0%	875–1,300 V	Feb 11, 2020	—
KACO blueplanet 137 TL3 M1 WM OD IIPX	137 kW	600 V	138.7 kW	138.7 kW	99.0%	875–1,300 V	Feb 11, 2020	—

DC input (PV side)

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

CEC test DC voltages (min / nom / max)875 / 981 / 1,300 V
DC input at rated output (CEC test)140.5 kW

Efficiency

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

CEC weighted efficiency99.0%
Night-time standby (tare)5.57 W
Power to start converting107.1 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.)No
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)No
CSIP (IEEE 2030.5) conformanceNo
Monitor key data & scheduling (Rule 21 Phase 3)No
CEC listedFeb 11, 2020

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

KACO blueplanet 137 TL3 M1 WM OD IIPX: max DC 1,300 V · MPPT 875–1,300 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	no fit	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	no fit	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	no fit	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	no fit	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	no fit	—
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	no fit	—
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.

Compare with similar 137 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
KACO new energy KACO blueplanet xxx TL3 M1 WM OD IIPX	125 kW–137 kW	99.0%	875–1,300 V	—	2020	0
SolarEdge SExKUS	9 kW–330 kW	99.0%	100–1,400 V	16 of 19	2025	14
SMA SHP FLEX-US-21	55 kW–172 kW	99.0%	372–1,200 V	Yes	2025	—

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

About KACO new energy

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerKACO new energy
Listed in CEC asKACO new energy GmbH
Models on CEC lists13

Other series

KACO blueplanet xxx TL3 M1 WM OD IIK0KACO blueplanet xxx TL3 M1 WM OD IIKXKACO blueplanet xxx TL3 M1 WM OD IIP0KACO blueplanet xxx TL3 M1 WM OD IIQ0KACO blueplanet xxx TL3 M1 WM OD IIQX

Questions & answers

How efficient is the KACO new energy KACO blueplanet xxx TL3 M1 WM OD IIPX?

The California Energy Commission lists a weighted efficiency of 99.0% for KACO new energy KACO blueplanet xxx TL3 M1 WM OD IIPX models, measured at six power levels and three DC voltages.

What sizes does the KACO new energy KACO blueplanet xxx TL3 M1 WM OD IIPX come in?

The CEC list includes 2 models from 125 kW to 137 kW AC: KACO blueplanet 125 TL3 M1 WM OD IIPX, KACO blueplanet 137 TL3 M1 WM OD IIPX.

Is the KACO new energy KACO blueplanet xxx TL3 M1 WM OD IIPX certified to UL 1741 SB?

The CEC list does not show UL 1741 SB certification for these models.

What is the KACO blueplanet 137 TL3 M1 WM OD IIPX’s DC input voltage range?

CEC tested it at 875–1,300 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 — Southern California permit portals. Equipment matched from permit descriptions.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).