19.4 × 31.8 × 12 in

Hybrid inverterSol-Ark

Sol-Ark Limitless 15K-LV

Name: Sol-Ark Limitless 15K-LV
Brand: Sol-Ark

Hybrid inverter, dc-coupled hybrid (pv + battery). 4 models, 10 kW–15 kW AC at 208 V / 240 V.

UL 1741 SBCEC listed · Aug 11, 2022Rapid shutdown

Model

Rated AC power15 kW
CEC weighted efficiency96.5%
Max DC input500 V
MPPT trackers3
Warranty10 years

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 4 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
Limitless 10K-LV	10 kW	208 V	8.63 kW	8.63 kW	96.5%	250–425 V	Aug 1, 2024	SB
Limitless 10K-LV	10 kW	240 V	9.97 kW	9.97 kW	96.5%	250–425 V	Aug 1, 2024	SB
Limitless 15K-LV	15 kW	208 V	13 kW	13 kW	96.5%	200–425 V	Aug 11, 2022	SB
Limitless 15K-LV	15 kW	240 V	15 kW	15 kW	96.5%	200–425 V	Aug 11, 2022	SB

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

DC input (PV side)

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

Max DC input voltage500 V
MPPT operating range150–500 V
Full-power MPPT range175–425 V
CEC test DC voltages (min / nom / max)200 / 320 / 425 V
Start-up voltage125 V
MPPT trackers3
Strings per MPPT2
Max input current26 A
DC input at rated output (CEC test)15.6 kW

AC output (grid side)

Sol-Ark datasheet · CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power15 kW
CEC-measured continuous output15 kW
Grid voltage208 V / 240 V
Phase208 V (1-phase of 3-phase service), split-phase 120/240 V
Frequency50 Hz
Max continuous output current62.5 A

Efficiency

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

CEC weighted efficiency96.5%
Peak efficiency97.5%
Night-time standby (tare)21.2 W
Power to start converting83.1 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) · Sol-Ark datasheet

UL 1741 SB (3rd ed.)Yes — SGS, certificate May 26, 2023
UL 1741 SA (SA8–SA13)No
Volt-VAr with reactive power priority (SA13)No
Freq-Watt / Volt-Watt (SA14–15)No
Disable permit service / limit active power (SA17–18)No
CSIP (IEEE 2030.5) conformanceNo (4 of 8 models)
Monitor key data & scheduling (Rule 21 Phase 3)No
Power control system (PCS)Stated in CEC listing (power control system)
CEC listedAug 11, 2022
Last CEC updateFeb 13, 2023
Standards listed on the datasheetUL 1741, UL 1741 SB, IEEE 1547, CA Rule 21, HECO Rule 14H

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

Backup power

Sol-Ark datasheet

Backup surge24,000 VA for 10 s

Safety & protection

Sol-Ark datasheet

Rapid shutdown (NEC 690.12)Yes (NEC 690.12, datasheet)
Arc-fault protection (UL 1699B)Yes (datasheet)

Monitoring & communication

Sol-Ark datasheet

InterfacesWi-Fi, Ethernet, RS485, Modbus, CAN

Size, weight & environment

Sol-Ark datasheet

Dimensions (W × H × D)19.4 × 31.8 × 12 in
Weight134.9 lb (61.2 kg)
Enclosure ratingIP65, NEMA 3R
Operating temperature−25 to +55 °C

Warranty

Sol-Ark datasheet

Standard warranty10 years

Panel compatibility & string sizing

Sol-Ark datasheet · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

Limitless 15K-LV: max DC 500 V · MPPT 175–425 V (datasheet)

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	6–10	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 V	30.6 V	6–10	—
LONGi LR5-54HABB-400M	400 W	39.3 V	25.3 V	7–12	—
JA Solar JAM54S31-405/MR	405 W	39.4 V	25.5 V	7–12	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 V	27 V	7–12	—
Silfab Solar SIL-440QD	440 W	41.1 V	28 V	7–12	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 V	28 V	7–12	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 V	28 V	7–12	—
REC Group REC460AA Pure-RX	460 W	68.8 V	47.1 V	4–7	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 V	25.3 V	7–12	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 V	28 V	7–12	—
Tesla TSP-420	420 W	43.4 V	27.7 V	7–11	—

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

Compare with similar 15 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
Sol-Ark Limitless xxK-LV	10 kW–15 kW	96.5%	200–425 V	Yes	2024	0
EG4 Electronics 18KPV-12LV	10.4 kW–12 kW	97.0%	230–480 V	Yes	2023	7
Shenzhen Lux Power Technology LXP-LB-US xK	8 kW–16 kW	97.0%	210–480 V	Yes	2025	1
Sol-Ark 12K-2P-LL	12 kW–12 kW	97.5%	250–425 V	Yes	2026	—
Suzhou Ample ESS AP-LxK-SPUS	7.98 kW–15 kW	96.5%	108–480 V	Yes	2026	—

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

About Sol-Ark

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerSol-Ark
Listed in CEC asSol-Ark
Websitesol-ark.com
Models on CEC lists45

Other series

12K-2P-LLLimitless 18K-2P-LVxxK-3P-480VxxK-3P-208V5K-120V/8K-230V-1P

Documents

manufacturer documents

PDF
L3 Series Limitless Lithium 208V Datasheet
Datasheet · Sol-Ark · Aug 2026
PDF
L3 Series LimitLess Lithium 208V Datasheet
Datasheet · Sol-Ark · Nov 2025
PDF
L3 Series LimitLess Lithium 480V Datasheet
Datasheet · Sol-Ark · Nov 2025
PDF
Limitless 12K-2P-LL Hybrid Inverter Datasheet (EN)
Datasheet · Sol-Ark · Jul 2026
PDF
Limitless 12K-2P-LL Hybrid Inverter Installation Manual
Manual · Sol-Ark · Jul 2026
PDF
Limitless 12K-2P-LL Hybrid Inverter Quickstart Guide
Manual · Sol-Ark · Jul 2026

Questions & answers

How efficient is the Sol-Ark Limitless xxK-LV?

The California Energy Commission lists a weighted efficiency of 96.5% for Sol-Ark Limitless xxK-LV models, measured at six power levels and three DC voltages. The datasheet states a peak efficiency of 97.5%.

What sizes does the Sol-Ark Limitless xxK-LV come in?

The CEC list includes 4 models from 10 kW to 15 kW AC: Limitless 10K-LV, Limitless 10K-LV, Limitless 15K-LV, Limitless 15K-LV.

Is the Sol-Ark Limitless xxK-LV certified to UL 1741 SB?

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

Can the Sol-Ark Limitless xxK-LV be used with a battery?

The CEC lists it as a dc-coupled hybrid (pv + battery).

What is the Limitless 15K-LV’s DC input voltage range?

Max DC input voltage is 500 V per the datasheet. MPPT operating range 150–500 V. CEC tested it at 200–425 V DC.

What warranty does it have?

10 years standard (manufacturer datasheet).

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.
Sol-Ark — manufacturer datasheet “Residential Hybrid Inverter Inverter Model: Limitless 15K-LV”.
Sol-Ark — document library on the manufacturer’s website (links above).
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).