Fox ESS KA7 vs Fronius Primo GEN24 6.0 Plus
AC power: Fox ESS KA7 7 kW, Fronius Primo GEN24 6.0 Plus 6 kW. The Fox ESS KA7 is better on 6 of 10 comparable points.
Who wins where
- Fox ESS KA7
- Fronius Primo GEN24 6.0 Plus
Biggest differences
| Fact | KA7 | Primo GEN24 6.0 Plus |
|---|---|---|
| MPPT voltage min. | 80 V | 230 V |
| Weight | 27.5 kg | 15.4 kg |
| Noise | 30 dB(A) | 42 dB(A) |
| AC power | 7 kW | 6 kW |
| MPPT voltage max. | 500 V | 480 V |
Score per area = position (0–100) relative to all 238 models in this category; higher is better.
| Technical specifications | Fox ESSKA7 | FroniusPrimo GEN24 6.0 Plus |
|---|---|---|
| Performance | ||
| AC power | 7 kW ✓ 1 | 6 kW 2 |
| Max. PV array power | – | 9 kWp 2 |
| MPP trackers | – | 2 2 |
| Efficiency | ||
| Max. efficiency | 97.8 % ✓ 3 | 97.6 % 2 |
| European efficiency | 97.4 % ✓ 3 | 97.1 % 2 |
| Noise | ||
| Noise | 30 dB(A) ✓ 3 | 42 dB(A) 2 |
| Electrical | ||
| MPPT voltage min. | 80 V ✓ 3 | 230 V 2 |
| MPPT voltage max. | 500 V ✓ 3 | 480 V 2 |
| Max. input current per MPPT | – | 22 A 2 |
| Phases | – | 1 2 |
| Connectivity & smart | ||
| Hybrid (battery-ready) | Yes 3 | Yes 2 |
| Backup power | Yes 3 | Yes 2 |
| Wi-Fi / monitoring | Yes 3 | Yes 2 |
| Dimensions & weight | ||
| IP rating | IP65 3 | IP66 2 |
| Width | 450 mm 3 | 474 mm 2 |
| Height | 527 mm 3 | 530 mm 2 |
| Depth | 208 mm 3 | 165 mm 2 |
| Weight | 27.5 kg 3 | 15.4 kg ✓ 2 |
Sources
- CEC approved inverters (Australia) — Clean Energy Regulator (Australian Government), CC BY 4.0 · accessed 29 Sept 2026
- Fronius Primo GEN24 & GEN24 Plus 3.0 - 6.0 kW – datasheet, EN V04 (June 2025) — Fronius International GmbH · accessed 27 Sept 2026
- KH/KA SINGLE-PHASE HYBRID/AC INVERTER, 1.6 | 2025/10/09 — Fox ESS · accessed 29 Sept 2026