EG4 12kPV
For grid-tied homes that want battery backup and net metering from a mid-size inverter. Pay the premium over the XP line only if you need grid sell or an outdoor install.
Signature Solar $2,999.99 Shop Solar Kits $2,999.99$2,999.99
The EG4 12kPV is the better hybrid solar inverter overall, rated 4.2 to 3.5. The EG4 12kPV leads on warranty, features and solar input. The PowMr SunSmart 8KP wins on value. The PowMr SunSmart 8KP costs $2,180.99 less ($819 vs $2,999.99).
PowMr SunSmart 8KP
For off-grid homes that want a lot of split-phase power and solar input for little money. Permitted installs that need a UL listing should look elsewhere.
Amazon PowMr $819$819
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 EG4 12kPV for warranty (10-year warranty vs 1.5-year warranty), features (UL 1741 listed, Wi-Fi app, parallel stacking, grid sell-back, generator input, battery communication vs Wi-Fi app, parallel stacking, battery communication; not UL 1741 listed) and solar input (12,000 W of panels, 600 V max, 2 MPPTs vs 10,500 W of panels, 500 V max, 1 MPPT).
- Choose the PowMr SunSmart 8KP for value ($102 per kW of continuous output vs $375 per kW of continuous output).
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 | EG4 12kPV | PowMr SunSmart 8KP |
|---|---|---|
| Overall rating | 4.2/5 | 3.5/5 |
| Value 30% | 65 $375 per kW of continuous output | 100 $102 per kW of continuous output |
| Solar input 20% | 68 12,000 W of panels, 600 V max, 2 MPPTs | 51 10,500 W of panels, 500 V max, 1 MPPT |
| Efficiency 20% | 70 94% peak efficiency, 55 W idle | 45 93% peak efficiency |
| Features 15% | 100 UL 1741 listed, Wi-Fi app, parallel stacking, grid sell-back, generator input, battery communication | 45 Wi-Fi app, parallel stacking, battery communication; not UL 1741 listed |
| Warranty 15% | 100 10-year warranty | 6 1.5-year warranty |
Specifications
| EG4 12kPV | PowMr SunSmart 8KP | |
|---|---|---|
| Output | ||
| Output voltage | 120/240 V split-phase | 120/240 V split-phase |
| Continuous output | 8,000 W | 8,000 W |
| Surge | 16,000 W | 16,000 W |
| Peak efficiency | 94% | 93% |
| CEC efficiency | 96.4% | - |
| Idle draw | 55 W | - |
| Transfer time | 20 ms | 10 ms |
| Parallel units | Up to 10 units | Up to 6 units |
| Solar | ||
| Max PV power | 12,000 W | 10,500 W |
| Max PV voltage (Voc) | 600 V | 500 V |
| MPPT range | 120 to 500 V | 125 to 425 V |
| MPPT trackers | 2 | 1 |
| PV current per tracker | 25 A | 27 A |
| Battery and grid | ||
| Battery voltage | 48 V | 48 V |
| Battery types | Lithium, lead-acid | Lithium-ion, lead-acid |
| Max charge current | 167 A | 160 A |
| AC charge current | - | 100 A |
| Battery communication | Yes | Yes |
| Grid sell-back | Yes | No |
| Generator input | Yes | No |
| UL 1741 | UL 1741 SB | No |
| Build | ||
| App monitoring | Included | Included |
| Enclosure | NEMA 4X | IP20 |
| Dimensions | 29.5 x 20.5 x 11.2 in | 472 x 412 x 130 mm |
| Weight | 110 lb | 35.3 lb |
| Warranty | 10 years | 1.5 years |
| Released | 2024-06 | - |