Sol-Ark 15K-2P
For homeowners and installers who want a long-proven whole-home hybrid with strong support. It costs more than EG4 for similar output.
Amazon Shop Solar Kits $4,999$4,999
The Sol-Ark 15K-2P is the better hybrid solar inverter overall, rated 4.1 to 4.0. The Sol-Ark 15K-2P leads on solar input. The Sol-Ark Limitless 12K-2P-LL costs $1,150 less ($3,849 vs $4,999).
Sol-Ark Limitless 12K-2P-LL
For homes that want Sol-Ark’s backup and grid-sell features on a smaller budget, usually on a critical-loads panel. Its high idle draw is the main trade-off.
Shop Solar Kits $3,849$3,849
Prices were last checked October 23, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Sol-Ark 15K-2P for solar input (19,500 W of panels, 500 V max, 3 MPPTs vs 12,000 W of panels, 500 V max, 3 MPPTs).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 120/240 V split-phase hybrid solar inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Sol-Ark 15K-2P | Sol-Ark Limitless 12K-2P-LL |
|---|---|---|
| Overall rating | 4.1/5 | 4.0/5 |
| Value 30% | 57 $417 per kW of continuous output | 63 $385 per kW of continuous output |
| Solar input 20% | 81 19,500 W of panels, 500 V max, 3 MPPTs | 60 12,000 W of panels, 500 V max, 3 MPPTs |
| Efficiency 20% | 52 90 W idle | 50 96 W idle |
| Features 15% | 100 UL 1741 listed, Wi-Fi app, parallel stacking, grid sell-back, generator input, battery communication | 100 UL 1741 listed, Wi-Fi app, parallel stacking, grid sell-back, generator input, battery communication |
| Warranty 15% | 100 10-year warranty | 100 10-year warranty |
Specifications
| Sol-Ark 15K-2P | Sol-Ark Limitless 12K-2P-LL | |
|---|---|---|
| Output | ||
| Output voltage | 120/240 V split-phase | 120/240 V split-phase |
| Continuous output | 12,000 W | 10,000 W |
| Surge | 24,000 W | 24,000 W |
| Max efficiency | 97.5% | 97.6% |
| CEC efficiency | 96.5% | - |
| Idle draw | 90 W | 96 W |
| Transfer time | 5 ms | 5 ms |
| Parallel units | Up to 12 units | Up to 12 units |
| Solar | ||
| Max PV power | 19,500 W | 12,000 W |
| Max PV voltage (Voc) | 500 V | 500 V |
| MPPT range | 150 to 425 V | 150 to 425 V |
| MPPT trackers | 3 | 3 |
| PV current per tracker | 26 A | 32 A |
| Battery and grid | ||
| Battery voltage | 48 V | 48 V |
| Battery types | Lithium, lead-acid | Lithium, lead-acid |
| Max charge current | 275 A | 220 A |
| Battery communication | Yes | Yes |
| Grid sell-back | Yes | Yes |
| Generator input | Yes | Yes |
| UL 1741 | UL 1741 SB | UL 1741 SB |
| Build | ||
| App monitoring | Included | Included |
| Enclosure | IP65 / NEMA 3R | IP65 / NEMA 3R |
| Dimensions | 33 x 19.4 x 12 in | 25.7 x 16.59 x 9.8 in |
| Weight | 135 lb | 65 lb |
| Warranty | 10 years | 10 years |
| Released | 2022-08 | 2026-06 |