FOX ESS AC1
The FOX ESS AC1 is a hybrid inverter range from FOX ESS with 10 models. Rated AC output 3 kW – 6 kW. Listed and verified: VDE-AR-N 4105. Sold in Germany.
Specifications
- Rated AC output
- 3 kW – 6 kW
- Models in this range
- 10
What the FOX ESS AC1 does
A hybrid inverter runs both the solar array and a home battery: it supplies the home from the panels first, stores the surplus and draws on the battery when the sun goes down. The FOX ESS AC1 range spans 3 kW to 6 kW of AC output, suiting arrays of about 3–3.9 kWp at the small end and 6–7.8 kWp at the large end, as installers commonly size the panels up to 30% above the inverter's rating.
In Germany, arrays of the same size produce about 2,700 to 5,400 kWh a year, assuming a conservative 900 kWh per kWp. For the smallest model, that is worth €208 a year fed into the grid at 7.70 ct per kWh, and up to €999 used at home instead of buying power at 37.0 ct.
Estimates. Electricity prices: BDEW Strompreisanalyse, autumn 2026; Bundesnetzagentur, EEG feed-in tariffs from 1 August 2026.
Product details
- Product type
- Hybrid inverter
- Brand
- FOX ESS
- Category
- Home Solar & Hybrid Inverters
- Sold in
- Germany
- Listed in
- ZEREZ (FGW, Germany)
Models (10)
| Model | AC output |
|---|---|
| AC1-3.0-E-G2-WL | 3 kW |
| AC1-3.7-E-G2-WL | 3.7 kW |
| AC1-4.6-E-G2-WL | 4.6 kW |
| AC1-4.6-E1-G2 | 4.6 kW |
| AC1-4.6-E1-G2-WL | 4.6 kW |
| AC1-5.0-E-G2-WL | 5 kW |
| AC1-5.0-E1-G2 | 5 kW |
| AC1-5.0-E1-G2-WL | 5 kW |
| AC1-6.0-E-G2-WL | 6 kW |
| AC1-6.0-E1-G2-WL | 6 kW |
Certifications
| Certification | Market | Status | Reference | Valid until |
|---|---|---|---|---|
| VDE-AR-N 4105 | Germany | ✓ Verified 20 October 2026 | U24-0989 |