Sol-Ark 15K Hybrid Inverter
The Sol-Ark 15K delivers up to 15000 W continuous, accepts 19500 W of solar across 3 MPPT trackers, and switches to backup in 5 ms to protect the whole house.
Characteristics
- Continuous output: 15000 W (12000 W on battery alone)
- Solar input: Up to 19500 W, 3 MPPT
- Battery: 48V lithium or lead-acid, 275 A max
- Grid-fail switchover: 5 ms, built-in touchscreen
- 5 ms switchover, 3 MPPT, 10-year warranty
Detailed overview: Sol-Ark 15K hybrid solar inverter
The Sol-Ark 15K is an all-in-one residential hybrid inverter, built for homes that want to self-consume their own solar production, store energy, and stay protected during a grid outage. The enclosure packs the MPPT charge controller, a bidirectional inverter/charger and 48V battery management, running grid-tied, fully off-grid, or as automatic backup.
On the solar side, its 3 MPPT trackers accept up to 19500 W of DC-coupled panels, with the option to add AC-coupled solar to push combined input past 38 kW on larger installations. On the output side, it delivers 15000 W continuous with solar assistance (12000 W on battery alone), with peaks quoted up to 24000 VA for 10 seconds to start demanding loads such as a well pump or air conditioning.
During a grid outage, the switchover time of just 5 milliseconds is fast enough that most electronics do not even restart. Battery management covers both lithium and lead-acid chemistries, with charge/discharge current up to 275 A at 48V, a 3-stage charge controller with equalization, and a built-in 2-wire automatic generator start. Up to 12 units can be paralleled for larger installations.
Monitoring runs over Wi-Fi and Ethernet, with an LCD touchscreen built right into the unit to manage time-of-use rate schedules without needing an app. Rated IP65/NEMA 3R, it weighs 135 lb (61.2 kg) and is rated for -13 °F to 131 °F (-25 °C to 55 °C) ambient, with derating above 113 °F (45 °C). Backed by a 10-year warranty and a claimed warranty failure rate under 0.3%, the Sol-Ark 15K is one of the most respected hybrid inverters among serious US installers and off-grid DIYers, and one of the few in this category with genuine over-the-counter availability rather than a quote-only sales process.
Full specifications
Detailed characteristics
Power and protection
| Output power?Maximum power delivered (for storages with a 230 V output). | 15000 W |
|---|
Solar section
| MPPT controllers?Number of built-in MPPT solar controllers (lets you connect panels facing different directions). | 3 |
|---|---|
| Max solar input?Maximum connectable PV power. | 19500 W |
Connectivity
| Wi-Fi?Remote control and updates over Wi-Fi. | Yes |
|---|
Durability and format
| Weight?Weight of the battery. | 134.9 lb (61.2 kg) |
|---|---|
| Dimensions (L × W × H)?Length × width × height, in millimetres. | 12 × 19.4 × 31.8 in (306 × 494 × 807 mm) |
Availability and warranty
| Warranty?Length of the manufacturer's warranty. | 10 years |
|---|
Related video
Video: Sol-Ark 15k review (is it worth it?) - Published on 19/04/2023
Our tester's review: Julien De Jurquet
What stands out first with the Sol-Ark 15K is how quiet the switchover is during a simulated grid failure: our computers and the fridge did not even flicker, and the claimed 5 milliseconds felt believable. The touchscreen built right into the unit is a genuinely nice surprise for setting time-of-use hours without pulling out a phone, unlike most competitors that push everything through an app. The 3 MPPT trackers let you split panels across multiple roof faces without losing efficiency. The main downside is the weight: over 135 lb to mount on a wall really calls for two people. Fan noise under heavy load is noticeable if the utility room backs onto a living space. For a serious residential storage budget, the brand's reliability track record and its very low warranty failure rate make it a reassuring choice, even if the price sits a step above equivalent Chinese-made competitors.
Frequently asked questions: Sol-Ark 15K hybrid solar inverter
Yes, that is one of its strengths: switchover to backup power takes around 5 milliseconds, fast enough that most electronics do not even restart.
The inverter accepts anywhere from 50 to 9900 Ah at 48V per the manufacturer, but most residential installs target 20 to 40 kWh usable to cover a full night of use.
Up to 19500 W of DC input across its 3 MPPT trackers, and more by adding AC-coupled solar, for a claimed combined total of up to 38400 W.
Yes, it has a built-in 2-wire automatic generator start (AGS), useful for extending backup runtime during an extended outage without manual intervention.
The final connection to the electrical panel, utility paperwork and commissioning almost always require a licensed electrician, even though many experienced DIYers mount the unit and run the solar wiring themselves.
Need help choosing?
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Published on 04/09/2026