Inverters comparison
EG4 18kPV 12000W Hybrid Inverter vs Sol-Ark 15K-2P 15000W Hybrid Inverter
Spec-by-spec comparison of the EG4 18kPV 12000W Hybrid Inverter and Sol-Ark 15K-2P 15000W Hybrid Inverter, with editorial commentary on which fits which use case.
| EG4 18kPV 12000W Hybrid Inverter Inverter | Sol-Ark 15K-2P 15000W Hybrid Inverter Inverter | |
|---|---|---|
| Price (MSRP) | $4,898 | $6,000 |
| Status | Active | Active |
| Type | Hybrid | Hybrid |
| Continuous AC output | 12 kW | 15 kW |
| Surge output | 15.5 kW | 30 kW |
| AC nominal voltage | 240 V | 240 V |
| AC phases | split phase | split phase |
| Peak efficiency | 97.5% | 97.5% |
| MPPT channels | 3 | 3 |
| PV voltage range | 100–600 V | 175–425 V |
| PV max current | 25 A per MPPT | 26 A per MPPT |
| PV max power | 18 kW | 19.5 kW |
| Battery compatible | Yes | Yes |
| Battery voltage range | 40–60 V | 43–63 V |
| Transfer time | 20 ms | 5 ms |
| Generator input | Yes | Yes |
| Pass-through | 90 A | 200 A |
| Max parallel units | 10 | 12 |
| Noise | 68 dB | 30 dB |
| Communications | RS-485, Wi-Fi, CAN bus | CAN bus, RS-485, Wi-Fi, Ethernet |
| Enclosure rating | NEMA 4X | IP65/NEMA3R |
| Operating temp. | -25°C to 60°C | -25°C to 55°C |
| Dimensions | 870 × 520 × 285 mm | 807 × 494 × 306 mm |
| Weight | 55 kg | 61.2 kg |
| Idle consumption | - | 90 W |
| Cooling | - | Fan |
| Warranty | - | 10 years |
| Buy | signature solar → | signature solar → |
Where each one wins
Sol-Ark 15K-2P wins on continuous AC output (12.0 kW vs 15.0 kW), maximum PV input (18.0 kW vs 19.5 kW), transfer time (20 ms vs 5 ms), price ($4,898 vs $6,000). More continuous AC output means more loads can run simultaneously during a grid outage. 12 kW is the threshold for whole-home backup of an average US home; below that you usually need a critical-loads subpanel.
The right pick depends on which dimensions matter most to you. The spec table above lays out the full envelope; the chat panel below answers "which one for {use case}" if you want a directed recommendation.
EG4
18kPV 12000W Hybrid Inverter
$4,898
Best for
- ✓ whole-home or critical-loads battery backup
- ✓ US residential 120/240V split-phase loads
- ✓ arrays with mixed roof orientations or shading
Sol-Ark
15K-2P 15000W Hybrid Inverter
$6,000
Best for
- ✓ whole-home or critical-loads battery backup
- ✓ US residential 120/240V split-phase loads
- ✓ arrays with mixed roof orientations or shading
Watch out for
- ! Idle draw is 90 W — adds ~788 kWh/year of parasitic load
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Catalog-grounded answers. Suggest alternatives, sanity-check fit, dig into specs.
Ask anything about solar gear, comparisons, recommendations, edge cases. I'll cite specs from our catalog and link to product details.