Inverters comparison
EG4 EG4 6000XP Off Grid Inverter vs Sol-Ark 15K-2P 15000W Hybrid Inverter
Spec-by-spec comparison of the EG4 EG4 6000XP Off Grid Inverter and Sol-Ark 15K-2P 15000W Hybrid Inverter, with editorial commentary on which fits which use case.
| EG4 EG4 6000XP Off Grid Inverter Inverter | Sol-Ark 15K-2P 15000W Hybrid Inverter Inverter | |
|---|---|---|
| Price (MSRP) | $1,605 | $6,000 |
| Status | Active | Active |
| Type | Off-grid | Hybrid |
| Continuous AC output | 6 kW | 15 kW |
| AC nominal voltage | 240 V | 240 V |
| AC phases | split phase | split phase |
| MPPT channels | 2 | 3 |
| PV max power | 8 kW | 19.5 kW |
| Battery compatible | Yes | Yes |
| Battery voltage range | 42–58.4 V | 43–63 V |
| Closed-loop partners | EG4 48V batteries | - |
| Generator input | Yes | Yes |
| Idle consumption | 30 W | 90 W |
| Max parallel units | 16 | 12 |
| Cooling | Fan | Fan |
| Noise | 58 dB | 30 dB |
| Communications | Wi-Fi | CAN bus, RS-485, Wi-Fi, Ethernet |
| Enclosure rating | IP20 | IP65/NEMA3R |
| Operating temp. | 0°C to 45°C | -25°C to 55°C |
| Dimensions | 648 × 457 × 132 mm | 807 × 494 × 306 mm |
| Weight | 24 kg | 61.2 kg |
| Warranty | 5 years | 10 years |
| Surge output | - | 30 kW |
| Peak efficiency | - | 97.5% |
| PV voltage range | - | 175–425 V |
| PV max current | - | 26 A per MPPT |
| Transfer time | - | 5 ms |
| Pass-through | - | 200 A |
| Buy | signature solar → | signature solar → |
Where each one wins
Sol-Ark 15K-2P wins on continuous AC output (6.0 kW vs 15.0 kW), MPPT channels (2 channels vs 3 channels), maximum PV input (8.0 kW vs 19.5 kW), price ($1,605.56 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
EG4 6000XP Off Grid Inverter
$1,605
Best for
- ✓ whole-home or critical-loads battery backup
- ✓ US residential 120/240V split-phase loads
Watch out for
- ! Only 2 MPPT channels — verify your roof orientation/shading suits this
- ! Standard warranty is 5 years — shorter than premium hybrid inverters
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.