Photovoltaics for businesses: 3 commercial solutions with Deye GE-F120 and GE-F256
19 June 2026 · SK Partner s.r.o.
How to cut electricity costs in a small plant, a medium-sized production facility and a logistics site? Three model scenarios with the Deye GE-F120-2H2 (50 kW / 122.8 kWh) and GE-F256 (257 kWh) storage systems — with indicative savings and a recommended configuration.
Why do businesses invest in their own electricity generation?
In many EU countries, the price of electricity for businesses is around 0.18–0.22 €/kWh including distribution charges. For manufacturing companies and warehouses with high consumption, this means tens to hundreds of thousands of euros per year. A photovoltaic system with battery storage can significantly increase the share of self-generated solar energy and reduce demand peaks — without compromising operations.
For businesses we offer two Deye storage systems: GE-F120-2H2 — an all-in-one system with a hybrid inverter of 50 kW and a LiFePO4 battery of 122.8 kWh in a single cabinet, and GE-F256-BC-2-A3 — an outdoor battery cabinet of 257.23 kWh, to which a separate inverter is added, for example SUN-125K-SG02HP3-EU-GM10. Let us look at three model scenarios.
Deye GE-F256 — 257 kWh outdoor battery cabinet for commercial and industrial systems
GE-F120 or GE-F256?
| Parameter | GE-F120-2H2 | GE-F256 + SUN-125K |
|---|---|---|
| Power | 50 kW | 125 kW |
| Battery capacity | 122.8 kWh | 257.23 kWh |
| Inverter | in the cabinet (all-in-one) | separate, on the cabinet bracket |
| PV input | up to 65 kW, 4 MPPT | up to 250 kW, 10 MPPT |
| Battery service life | ≥ 6000 cycles | ≥ 8000 cycles |
| Expansion | up to 10 systems (off-grid) | up to 10 inverters (AC), 10 cabinets (DC) |
| Warranty | 10 years | 10 years |
GE-F120 is a ready-made system for smaller operations — nothing else needs to be purchased. GE-F256 is suited to larger sites: you select an inverter for the cabinet according to the power required (with SUN-125K a 125 kW / 257 kWh system, with SUN-80K 80 kW / 257 kWh).
Scenario 1 — small production plant (800 m²)
Site profile
- Production hall with offices: 800 m²
- Operation: Monday–Friday, 6:00–18:00
- Annual electricity consumption: 120,000 kWh/year
- Annual electricity costs: ~24,000 €/year (at 0.20 €/kWh)
Proposed solution
- PV system: 60 kWp of solar panels on the roof (the GE-F120 input is up to 65 kW)
- Storage: 1× GE-F120-2H2 (50 kW / 122.8 kWh, inverter included in the price)
- Annual PV generation: ~57,000 kWh/year
- Self-consumption of solar energy: ~48,000 kWh/year (85%)
Indicative savings
| Parameter | Value |
|---|---|
| Self-consumption of solar energy | ~48,000 kWh/year |
| Coverage of annual consumption | ~40% |
| Indicative electricity savings | ~9,600 €/year |
The battery captures the midday surplus and covers peaks when machines start up — it reduces the maximum draw from the grid and with it the charges for reserved capacity. In the event of a grid outage it serves as a backup power source.
Scenario 2 — medium-sized production / warehouse (2,500 m²)
Site profile
- Production and warehouse site: 2,500 m²
- Operation: two shifts, 5:00–22:00
- Annual electricity consumption: 350,000 kWh/year
- Annual electricity costs: ~70,000 €/year
Proposed solution
- PV system: 200 kWp of solar panels
- Storage: 1× GE-F256-BC-2-A3 + inverter SUN-125K-SG02HP3-EU-GM10 (125 kW / 257 kWh)
- Annual PV generation: ~190,000 kWh/year
- Self-consumption: ~160,000 kWh/year
Indicative savings
| Parameter | Value |
|---|---|
| Self-consumption of solar energy | ~160,000 kWh/year |
| Coverage of annual consumption | ~46% |
| Indicative electricity savings | ~32,000 €/year |
In two-shift operation, the battery stores energy during the day and releases it during the evening shift, when the sun is not shining. The SUN-125K inverter supports 6 time slots for charging and discharging and the connection of a diesel generator.
Scenario 3 — logistics site / large warehouse (8,000 m²)
Site profile
- Logistics site with refrigeration: 8,000 m²
- Operation: continuous, 24/7
- Annual electricity consumption: 1,200,000 kWh/year
- Annual electricity costs: ~240,000 €/year
Proposed solution
- PV system: 600 kWp of solar panels
- Storage: 5× GE-F256-BC-2-A3 + 5× SUN-125K in parallel (625 kW / 1,286 kWh)
- Annual PV generation: ~570,000 kWh/year
- Self-consumption: ~480,000 kWh/year
Indicative savings
| Parameter | Value |
|---|---|
| Self-consumption of solar energy | ~480,000 kWh/year |
| Coverage of annual consumption | ~40% |
| Indicative electricity savings | ~96,000 €/year |
In continuous operation, the storage system shifts solar energy into the night hours and backs up critical systems (refrigeration, security). Up to 10 SUN-125K inverters can be connected in parallel, so the system can be expanded gradually.
The figures are indicative: electricity price 0.20 €/kWh, PV generation ~950 kWh/kWp per year. The actual savings depend on the consumption profile, distribution charges and the orientation of the panels. The payback period also depends on the cost of the panels and installation and on any national subsidies — we will prepare a calculation for your site on request.
Key advantages of Deye GE-F storage systems
- LiFePO4 batteries — ≥ 6000 cycles (GE-F120), ≥ 8000 cycles (GE-F256), 10-year warranty
- Peak shaving — reduces the charges for reserved capacity
- Backup power — protects production during a grid outage, also with a diesel generator
- Fire protection — gas detection, active extraction and a fire-extinguishing system directly in the cabinet
- Outdoor installation — IP55 protection rating, no plant room required
- Scalability — up to 10 systems in parallel
Interested in a Deye commercial solution?
SK Partner s.r.o. is a Deye distributor for B2B customers with a warehouse in Bratislava. We supply GE-F120-2H2, GE-F256-BC-2-A3 and the inverter SUN-125K-SG02HP3-EU-GM10 within 14 days of the order. Current prices can be found in the catalogue of commercial solutions. For larger projects we will prepare a technical design and a quotation — write to sales@sk-partner.sk.