Whole-home backup, hardened against EMP: Sol-Ark SA-15K-EMPKIT
Why You'll Love The Sol-Ark SA-15K-EMPKIT
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Everything the 15K does, with the hardening built in. You get Sol-Ark's full Whole Home 15K-2P platform — 15kW AC output and 200A grid pass-through — with the EMP hardening kit fitted from the start rather than added later.
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Protection for the investment, not just the house. Integrated PV lightning protection and Type II surge protection on both the DC and AC sides guard the most expensive component in your system against the strikes that routinely take out ordinary inverters.
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Whole-home backup with nothing switched off. 200A pass-through and a 5ms automatic transfer mean your entire service simply carries on when the grid fails — no load shedding, no choosing which circuits matter.
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Serious solar and battery headroom. Up to 19,500W of PV across three MPPTs, 19,200W of AC coupling, and a 275A charger working with 48V banks from 50Ah to 9,900Ah.
Your life, with the Sol-Ark SA-15K-EMPKIT
You don't build a whole-home energy system to have it taken out by a single strike.
Lightning is the everyday version of that risk, and it damages solar electronics somewhere every season. EMP events and solar flares sit further out on the curve, but the consequence is identical — the most expensive box in your system, dead, and your home back on the grid's terms at exactly the moment the grid isn't there.
The Sol-Ark SA-15K-EMPKIT is the Whole Home 15K-2P with that risk engineered out from the beginning. Sol-Ark states its EMP hardening exceeds military-grade standards. Underneath it, integrated PV lightning protection and Type II surge protection quietly handle the everyday version of the same job.
Beneath the hardening sits Sol-Ark's flagship whole-home platform.
200A grid pass-through means the inverter sits in front of your entire service, so an outage never forces you to pick circuits — the automatic transfer completes in 5 milliseconds and the house carries on. Peak apparent power reaches 24,000VA for 10 seconds off-grid, which is what actually starts a well pump or an air conditioner rather than tripping on them.
On the solar side you have up to 19,500W across three MPPTs with two strings each, plus 19,200W of AC coupling if you're building around panels you already own. Batteries connect on 48V with 275A of charge and discharge current, a 3-stage charging controller with equalization, and CANBus or RS485 MODBUS communication to your BMS.
It's rated IP65 / NEMA 3R for outdoor mounting, runs under 30 dB and carries a 10-year warranty. Wi-Fi and LAN hardware are included for monitoring, and you can stack up to 12 units in parallel for 180kW if the project ever grows.
The Sol-Ark SA-15K-EMPKIT in a nutshell:
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EMP hardening kit fitted as standard — Sol-Ark states it exceeds military-grade EMP standards.
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200A grid pass-through with 5ms transfer — true whole-home backup with no load shedding.
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19,500W PV across 3 MPPTs plus 19,200W AC coupling — room for large arrays and retrofits alike.
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IP65 / NEMA 3R with integrated lightning and surge protection — built to sit outside and take it.
Sol-Ark SA-15K-EMPKIT specifications
Max Allowed PV Power (STC)
19,500W
MPPT Voltage Range
150 – 500V (rated operating range 175 – 425V)
Startup Voltage / Max Input Voltage
125V / 500V
MPP Trackers & Strings
3 trackers, 2 PV strings per MPPT (6 DC solar ports)
Max Input Current per MPPT
26A operating / 44A short circuit
Max AC Coupled Input
19,200W
Nominal AC Voltage
120/240V, 120/208V, 220V — 50/60Hz
Real Power, Max Continuous
15,000W (62.5A max output current)
Real Power from Batteries Only
12,000W (50A @ 240V)
Peak Apparent Power (off-grid)
24,000VA for 10 seconds / 30,000VA for 100ms @ 240V
Max Grid Pass-Through Current
200A
Backup Transfer Time
5 ms
Efficiency
97.5% max, 96.5% CEC
Design
Transformerless DC — stackable up to 12 units in parallel
Battery Technologies
Lithium / lead acid, 48V nominal (43 – 63V operating range)
Battery Capacity Supported
50 – 9,900Ah
Max Battery Charge / Discharge Current
275A
Charging Controller
3-stage with equalization — 96.0% grid-to-battery charging efficiency
BMS Communication
CANBus & RS485 MODBUS — external battery temperature sensor included
Generator
Dedicated GEN port, integrated 2-wire Automatic Generator Start (AGS)
Protection
Integrated PV DC disconnect, ground fault detection, rapid shutdown control, arc fault detection, PV lightning protection, reverse polarity protection, 63A AC output breaker, 250A battery breaker, DC/AC Type II surge protection
Certifications
UL1741-2010/2018, UL1741SB, IEEE1547a 2003/2014, FCC 15 Class B, CA Rule 21, HECO Rule 14H
Enclosure & Environment
IP65 / NEMA 3R — -25 to 55°C (derating above 45°C), under 30 dB at 25°C, 90W no-load idle consumption
Monitoring
Wi-Fi & LAN hardware included
Dimensions (H × W × D)
807 × 494 × 306 mm (31.8" × 19.4" × 12")
Weight
61.2 kg / 135 lbs
Warranty
10 years
Let the experts help you find your perfect hybrid inverter
Not sure whether the Sol-Ark SA-15K-EMPKIT is right for your service size, or whether the EMP hardening is worth it for your situation? We're here to help you make the call properly the first time.
Chat via Email — support@kratopower.com
Chat on the Phone — +1 (888) 855-7286
Sol-Ark SA-15K-EMPKIT documents and materials
Disclaimer: EMP hardening is designed to provide additional protection against electromagnetic pulses, solar flares and lightning strikes. Claims regarding military-grade standards are the manufacturer's, and no protective system can guarantee against damage in all circumstances.
The information on this page is provided for general guidance only and should not be taken as professional, electrical or medical advice. The Sol-Ark SA-15K-EMPKIT is a high-voltage, grid-interconnected product weighing 135 lbs, and must be installed by a qualified, licensed electrician in line with the manufacturer's installation manual and your local codes; grid-tied and generator-connected use may also require permits and utility approval. Every situation is different, so if you have any doubt, please consult a qualified professional before purchasing or installing. Products are used at your own risk.
