BATTERY ENERGY STORAGE SYSTEMS (BESS)
Smartstack grid-scale energy storage with split architecture, 7.5 / 10 MWh
Country: USA · Model: Smartstack
Smartstack grid-scale storage is built from 7.5 or 10 MWh blocks that feed three-phase 690 V into the grid from a DC bus of up to 1,500 V. The batteries sit in separate Pod modules, and the control electronics move to a Smart Skid platform. The system travels on standard trailers and goes up in stages, with no large cranes on site.
- Block energy
- 7,308–7,524 kWh or ~10,000 kWh
- Cells
- 3XX Ah
- Discharge duration
- 2–8 h (7.5 MWh), 4–8 h (10 MWh)
- AC output
- 690 V 3AC IT, up to 3,762 A
Technical specifications
| Block energy | 7,308–7,524 kWh or ~10,000 kWh |
|---|---|
| Cells | 3XX Ah |
| Discharge duration | 2–8 h (7.5 MWh), 4–8 h (10 MWh) |
| AC output | 690 V 3AC IT, up to 3,762 A |
| DC voltage | up to 1,500 V |
| Availability | up to 99% |
| Operating temperature | −30…+55 °C, liquid cooling |
| Ingress protection | IP55, corrosion resistance C3–C5 |
| Standards | UL 9540, UL 9540A, IEC 62933, IEC 62477-1, NFPA 68/69 |
| More from the manufacturer’s documentation | |
| Smart Skid dimensions (L × D × H) | 7.371 × 2.202 × 1.616 m |
| Pod dimensions (L × D × H) | 1,764 × 2,656 × 2,524 mm (7.5 MWh) / 1,764 × 2,656 × 3,330 mm (10 MWh) |
| Weight | Smart Skid ~10,000 kg; Pod ~15,000 kg (7.5 MWh) / ~20,000 kg (10 MWh) |
| Max. AC output current by version | Up to 3,762 A (7.5 MWh) / 2,508 A (10 MWh) |
| Cell rating (CP-rate) | ≤ 0.5 (7.5 MWh) / 0.25 (10 MWh) |
| Grid frequency | 50/60 Hz |
| Derating | Above 50 °C |
| Elevation | 2,000 m without derating, up to 4,000 m with derating |
| Noise level | 70 dB(A) at 1 m at 25 °C |
| Seismic rating | IEEE 693 moderate (high with reinforcement kit), IBC and CBC SDC D, ASCE 7-16 |
| Standards (additional) | UL 1741, CSA C22.2 No. 107.1, FCC Part 15, IEC 61000-6-2, IEC 61000-6-4; designed to NFPA 855 |
| Communication protocols | Modbus, DNP3, OPC UA |
| Software | OS7 (BMS, controls, market applications), Nispera (analytics), Mosaic (bidding optimization, add-on for NEM, CAISO, ERCOT) |
| Guarantees (optional service plans) | Up to 99% availability, Energy Capacity Guarantee up to 25 years, Dispatchable Energy Guarantee |
| Fire safety | Isolated Pod compartments with engineered spacing, integrated fire suppression in Smart Skid, deflagration panels, active ventilation, environmental sensors, HVAC and chiller |
| Cybersecurity | ISO 27001 (2024), IEC 62443 certification pursued in 2026 |
| Customs codes (for reference) | |
| HS code | 8507.60 |
| UKTZED code (Ukraine) | 8507600000 |
| CN code (EU) | 85076000 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
The 7.5 MWh block holds 7,308–7,524 kWh for 2–8 h discharge, and the 10 MWh block about 10,000 kWh for 4–8 h. The AC output is a 3AC IT configuration with current up to 3,762 A in the first version and 2,508 A in the second. The maker lists cell capacity as 3XX Ah. Cooling is liquid with a chiller, the operating range is −30 to +55 °C with derating above 50 °C, and the enclosure is IP55 with C3–C5 corrosion resistance. A Pod weighs about 15,000 or 20,000 kg depending on version, and the Smart Skid about 10,000 kg. Noise is 70 dB(A) at 1 m and 25 °C. Availability reaches 99%, and the system is certified to UL 9540, UL 9540A, IEC 62933, IEC 62477-1 and NFPA 68/69.
How to choose
Choose the version by discharge duration. For 2–4 h only the 7.5 MWh block with a C-rate up to 0.5 fits, while for 4–8 h the 10 MWh block gives more energy on the same 1,764 × 2,656 mm Pod footprint and is just taller, 3,330 mm against 2,524 mm. The site can sit at up to 2,000 m without derating and up to 4,000 m with it. If one container of 1.4–5.6 MWh is enough, take Gridstack Pro, and for a modular build from 2 MW with air cooling, Gridstack.
Request a price and lead time
Smartstack grid-scale energy storage with split architecture, 7.5 / 10 MWh. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How much energy does one Smartstack block store?
The 7.5 MWh version holds 7,308–7,524 kWh, and the 10 MWh version about 10,000 kWh.
What output voltage and current does Smartstack have?
The output is 690 V 3AC on an IT system with up to 3,762 A, and DC voltage reaches 1,500 V.
What discharge duration does Smartstack support?
The 7.5 MWh version covers 2–8 h discharge and the 10 MWh version 4–8 h.
What seismic rating does Smartstack have?
IEEE 693 moderate, or high with the reinforcement kit, plus IBC and CBC SDC D per ASCE 7-16.
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