Fortress Power Envy 8K
For grid-tied homes with moderate backup needs that want an outdoor hybrid with export and US-based support.
Wind & Sun $3,735$3,735
The Fortress Power Envy 8K and the SunGoldPower SGN7.6K1HB-48 are evenly matched, rated 4.0 and 4.0. The Fortress Power Envy 8K leads on warranty. The SunGoldPower SGN7.6K1HB-48 wins on value. The SunGoldPower SGN7.6K1HB-48 costs $1,285 less ($2,450 vs $3,735).
SunGoldPower SGN7.6K1HB-48
A grid-tied hybrid sized for typical homes that want solar sell-back plus backup, with room to add units later.
SunGoldPower $2,450$2,450
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 Fortress Power Envy 8K for warranty (10-year warranty vs 5-year warranty).
- Choose the SunGoldPower SGN7.6K1HB-48 for value ($322 per kW of continuous output vs $467 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 | Fortress Power Envy 8K | SunGoldPower SGN7.6K1HB-48 |
|---|---|---|
| Overall rating | 4.0/5 | 4.0/5 |
| Value 30% | 47 $467 per kW of continuous output | 76 $322 per kW of continuous output |
| Solar input 20% | 74 13,000 W of panels, 600 V max, 2 MPPTs | 79 12,000 W of panels, 600 V max, 3 MPPTs |
| Efficiency 20% | 63 94% peak efficiency, 70 W idle | 50 efficiency and idle draw not published (neutral score used) |
| 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 | 44 5-year warranty |
Specifications
| Fortress Power Envy 8K | SunGoldPower SGN7.6K1HB-48 | |
|---|---|---|
| Output | ||
| Output voltage | 120/240 V split-phase | 120/240 V split-phase |
| Continuous output | 8,000 W | 7,600 W |
| Surge | 16,000 W | 15,200 W |
| Peak efficiency | 94% | - |
| CEC efficiency | 96.5% | - |
| Idle draw | 70 W | - |
| Transfer time | 20 ms | 10 ms |
| Parallel units | Up to 10 units | Up to 9 units |
| Solar | ||
| Max PV power | 13,000 W | 12,000 W |
| Max PV voltage (Voc) | 600 V | 600 V |
| MPPT range | 170 to 500 V | 70 to 540 V |
| MPPT trackers | 2 | 3 |
| PV current per tracker | 25 A | 30 A |
| Runs without battery | Yes | No |
| Battery and grid | ||
| Battery voltage | 48 V | 48 V |
| Battery types | Lithium, lead-acid | Lithium, lead-acid |
| Max charge current | 167 A | 210 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 4X) | NEMA 3R |
| Dimensions | 29.5 x 20.5 x 11.23 in | 420 x 800 x 240 mm |
| Weight | 110 lb | 88 lb |
| Warranty | 10 years | 5 years |
| Released | 2023-06 | 2026-05 |