Growatt SPE 6000 US
For off-grid homes and cabins that want 6 kW of 240 V with a large solar input at a low price. A strong rival to the EG4 6000XP.
Amazon$1,399
The Growatt SPE 6000 US rates 4.1 among 120/240 V split-phase hybrid solar inverters; the SunGoldPower SPH504880A rates 3.2 among 120 V ones. The SunGoldPower SPH504880A costs $810 less ($589 vs $1,399).
SunGoldPower SPH504880A
#7 in 120 VFull review
The budget version of the SPH5048P for single-unit 120 V systems that will never need 240 V.
Amazon SunGoldPower $589$589
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.
Scores side by side
These two sit in different output classes (120/240 V split-phase and 120 V), and each is scored against the reference points for its own class, so a rating says how well each does among its own output peers. How we rank explains each factor.
| Factor weight | Growatt SPE 6000 US | SunGoldPower SPH504880A |
|---|---|---|
| Overall rating | 4.1/5 | 3.2/5 |
| Value 30% | 93 $233 per kW of continuous output | 94 $118 per kW of continuous output |
| Solar input 20% | 68 9,000 W of panels, 550 V max, 2 MPPTs | 40 5,500 W of panels, 500 V max, 1 MPPT |
| Efficiency 20% | 67 95% peak efficiency, 75 W idle | 25 90% peak efficiency |
| Features 15% | 82 UL 1741 listed, Wi-Fi add-on, parallel stacking, generator input, battery communication | 50 UL 1741 listed, Wi-Fi add-on, battery communication; no parallel |
| Warranty 15% | 44 5-year warranty | 0 1-year warranty |
Specifications
| Growatt SPE 6000 US | SunGoldPower SPH504880A | |
|---|---|---|
| Output | ||
| Output voltage | 120/240 V split-phase | 120 V single-phase |
| Continuous output | 6,000 W | 5,000 W |
| Surge | - | 10,000 W |
| Peak efficiency | 95% | 90% |
| CEC efficiency | 94.5% | - |
| Idle draw | 75 W | - |
| Transfer time | 20 ms | 10 ms |
| Parallel units | Up to 9 units | No |
| Solar | ||
| Max PV power | 9,000 W | 5,500 W |
| Max PV voltage (Voc) | 550 V | 500 V |
| MPPT range | 60 to 480 V | 120 to 450 V |
| MPPT trackers | 2 | 1 |
| PV current per tracker | 22 A | - |
| Runs without battery | Yes | Yes |
| Battery and grid | ||
| Battery voltage | 48 V | 48 V |
| Battery types | Lithium, lead-acid | Lithium, lead-acid |
| Max charge current | 140 A | - |
| AC charge current | 140 A | 40 A |
| Battery communication | Yes | Yes |
| Grid sell-back | - | No |
| Generator input | Yes | No |
| UL 1741 | Yes | Yes |
| Build | ||
| App monitoring | Optional add-on | Optional add-on |
| Enclosure | IP20 | - |
| Dimensions | 550 x 465 x 150 mm | 426 x 322 x 126 mm |
| Weight | 47.4 lb | 25.4 lb |
| Warranty | 5 years | 1 year |
| Released | 2025-09 | 2025-06 |