Solves: Generators running at low load on construction sites and camps
Roxon BESS 50–150 kW
The Roxon BESS 50, 90 and 150 kW (RS50, RS90, RS150) are skid-mounted LFP storage systems of 102.4, 122.8 and 204.8 kWh, with a 415 V three-phase output. They integrate a 45 kW solar charger with 3 MPPTs, 40 kW grid charging, a static transfer switch under 30 ms and automatic generator control.
50 / 90 / 150 kW102–205 kWh415 VLFPIP54
Illustrative image
Application · Industry and remote operations
Energy for operating away from the grid.
A generator sized for peak demand spends much of its time at low load, especially at night. During those hours it burns fuel and adds maintenance to supply small loads, and hauling the fuel adds cost and logistics.
Used in: Industry and remote operations · Electric mobility
View the application →- 01
Overload up to 150 %
110–120 % for 10 min, 120–130 % for 1 min and 130–150 % for 200 ms.
- 02
45 kW solar charger
3 MPPTs from 200 to 750 V for fixed or deployable panels.
- 03
Switchover in under 30 ms
100 kVA static transfer switch between grid and island mode.
- 04
Climate-controlled and IP54
Two air conditioning units per skid; operates from −20 to 50 °C.
3 models: RS50, RS90, RS150. Data from the datasheet, updated October 28, 2026.
| Parameter | RS50 | RS90 | RS150 |
|---|---|---|---|
| General | |||
| Chemistry | Lithium iron phosphate (LFP) | ||
| Form factor | Steel skid with forklift pockets, lifting and towing points | ||
| AC output | |||
| Rated power | 50 kW | 90 kW | 150 kW |
| Max. apparent power | 63 kVA | 112 kVA | 188 kVA |
| Max. active power | 63 kW | 112 kW | 188 kW |
| Rated voltage | 3P4W + PE, 415 V AC | ||
| Frequency | 50 Hz | ||
| Power factor | 0.8–1 inductive or capacitive | ||
| Overload | 110–120 %: 10 min; 120–130 %: 1 min; 130–150 %: 200 ms | ||
| Battery | |||
| Rated energy | 102.4 kWh | 122.8 kWh | 204.8 kWh |
| Battery modules | 20 | 24 | 40 |
| Rated capacity | 100 Ah | ||
| Rated voltage | 512 V | 410 V | 410 V |
| Operating voltage range | 448–576 V | 358–461 V | 358–461 V |
| Recommended charge and discharge current | 50 A | ||
| Solar input | |||
| PV charger power | 45 kW | ||
| Max. PV voltage | 830 V | ||
| MPPT voltage range | 200–750 (430–750 at full load) V | ||
| Number of MPPTs | 3 | ||
| Max. current per MPPT | 35 / 35 / 35 A | ||
| Start-up voltage | 250 V | ||
| AC input (charging) | |||
| AC charging power | 40 kW | ||
| Input voltage | 415 V (323–456 V AC), three-phase + PE | ||
| Input frequency | 45–65 Hz | ||
| System | |||
| Static transfer switch (STS) | 100 kVA, grid / island switchover < 30 ms | ||
| Climate control | 2 units, 0.6 kW cooling each | 2 units, 1.5 kW cooling each | 2 units, 5 kW cooling each |
| Control | Automatic generator start and stop (ATS), integrated BMS | ||
| Scalability | Multiple units daisy-chained | ||
| Environment | |||
| Ingress protection | IP54 | ||
| Operating temperature | −20 to 50 °C | ||
| Noise level | 75 dBA | ||
| Physical | |||
| Dimensions (length × width × height) | 1,900 × 1,460 × 2,250 mm | 2,438 × 1,965 × 2,100 mm | 2,991 × 2,280 × 2,491 mm |
| Weight | 2,400 kg | 3,600 kg | 6,100 kg |
Send us the load, the hours of autonomy you need and the sources you have. We’ll send back a configuration with equipment and datasheets.
Ask about this unitQuestions about the Roxon BESS 50–150 kW
What is the difference between the BESS 50, 90 and 150 kW?
Power and energy: 50 kW with 102.4 kWh, 90 kW with 122.8 kWh and 150 kW with 204.8 kWh. All three share a 45 kW solar charger, 40 kW grid charging, a 415 V three-phase output and IP54 protection.
Can the Roxon BESS work with a generator?
Yes. It includes automatic generator start and stop (ATS) and an integrated BMS. It operates off-grid, with a generator, with panels or with the grid, and several units can be connected in a chain.
How is the Roxon BESS transported?
On a steel skid with forklift pockets and lifting and towing points. It weighs 2,400 kg for the 50 kW, 3,600 kg for the 90 kW and 6,100 kg for the 150 kW.
