eSpire 280 | Scalable, Utility-Grade Energy Storage
A high-voltage, high-capacity solution designed for commercial and industrial applications — from peak shaving to grid services and backup power.
eSpire 280 Energy Storage System
Commercial + Industrial Battery Storage
The eSpire 280 is Fortress Power’s flagship commercial energy storage system, offering up to 554 kWh of capacity and advanced control features for grid support, peak shaving, and backup power. Designed for large-scale facilities and microgrid integration, it delivers reliability, flexibility, and long-term value
Applications
Multi-Family Homes
Grocery and Convenient Stores
Charging Stations and Service Areas
Schools, Banks and Hospitals
FEATURES
PRODUCT INFORMATION
| Battery Specification | |
| Fortress Power Battery Module | eSpire 280 |
| Chemistry | Lithium Iron Phosphate |
| Cell Type | Prismatic |
| Pack Configuration | 1P6S |
| Number of Modules | 6 |
| Nominal Capacity | 280 Ah |
| Nominal Energy | 279.5 kWh |
| Nominal Voltage | 998.4 Vdc |
| Operating Voltage Range | 873.7 – 1123.2 Vdc |
| Maximum Continuous Charging/Discharging Current | 140 Amps |
| Communication | Modbus TCP, CAN, Modbus RTU |
| Cycle Life @ 25C @ 70% Retention | 8000 Cycles |
| DC DC Round Trip Efficiency | 92% @ 0.5C, 25°C, 1 Cycle Per Day |
| Operating Temperature Range | Charging: 0-55°C & Discharging -20-55°C |
| Thermal Management System | Integrated Liquid Cooling System (HVAC) |
| Fire Suppression System | Fire Detector, Smoke Detector & Fire Extinguisher |
| IP Class | Type IP66, NEMA 3R |
| Battery Bank Scalability | Up to 15 (4.2 MWH) |
| PCS Specification | |
| PCS Model | FP-PCS125HV |
| Rated AC Power | 125 KVA/KW |
| Rated Grid Voltage | 3Ph 480Vac + PE |
| Grid Voltage Range | 422 to 528Vac (-12%, +10%) / (3Ph 208Vac) * + PE * |
| Rated Grid Frequency | 60 Hz |
| Grid Frequency Range | 59.3 to 60.5Hz, Adjustable |
| Rated AC Current | 151 Amps |
| DC Voltage Range | 750-1350Vdc |
| Rated Discharge / Charge Power | 128KW/122KW |
| Max. Discharge/Charge Current | 157Amps/151Amps |
| Current THD | <3% |
| Power Factor | -1 to 1, continuously adjustable |
| Peak Efficiency | 98% |
| Standby Loss | <25W @ Cool Mode |
| Grid Power Factor | -1 (leading) to (Lagging), Continuously Adjustable |
| Wiring Configuration | 3 Phase 4 Wire or 3 Phase 3 Wire (3P4W/3P3W Configuration) |
| Protection | DC Reverse Protection/OVP/UVP/OCP/DC Insulation Detection |
* For 3Ph 208Vac + PE application, a step-down transformer is required.
| Energy Management Software | |
| Functional Operation | Real-time Monitoring, Adaptive Peak Shaving, Demand Response, Net Metering, VPP |
| Operation Mode | Back-up, Microgrid, Off-grid, Time of Use, Zero Export, VPP |
| Communication Interface | Modbus (TCP and RTU), TCP/IP, CANbus, BACnet, Dry Contactor, External APIs |
| System Specification | PCS Details | Keystone Microgrid Control Panel | Battery Details |
| Operating Temperature | -22 to 140°F, De-Rating >113°F (-30 to 60°C, De-Rating >45°C) | -22 to 131°F (-30 to 55C) | -22 to 113°F (-30 to 45°C) |
| Storage Temperature Range | -13 to 131°F (-25 to 55°C) | -22 to 131°F (-25 to 55C) | -20 to 140°F (-40 to 60°C) |
| Dimensions (H*W*D) | 78.74 x 23.62 x 19.685 in (2000 x 600 x 500 mm) | 77.56 x 35.43 x 36.06 in (1990 x 900 x 916 mm) | 89.76 x 51.18 x 51.18 in (2280 x 1300 x 1300 mm) |
| Enclosure Rating | NEMA 3R / IP55 | NEMA 3R / IP54 | NEMA 4X / IP66 |
| Relative Humidity | <95% No Condensing | <95% No Condensing | <95% No Condensing |
| Max Altitude | 3000m, De-Rating > 2000m | 3000m, De-Rating > 2000m | 3000m, De-Rating > 2000m |
| Acoustic Noise | <70 dBA, Max 75dB | <70dB | <70dB, Max 80dB |
| Cooling System | Forced Air via Speed Control | Air Cool | Liquid Cooling Via HVAC |
| Net Weight | 286.6Ibs (230 kg) | 690 Ibs (313 kg) | 6625 Ibs (3005 kg) |
| Operation Status indicators | Warning, Low Voltage & High Voltage | ||
| Lockage Enclosure | Padlockable Swing Handle | ||
| User Interface | LED, EPO, Ethernet & HMI via Web Access / EMS Web Portal | ||
| Communication Protocol | Ethernet/Modbus TCP | ||
| Certifications | UL1973, UL9540[A], UL1741-SB, IEEE-1547-2018, IEEE-519, FCC Part 15 Class A, UL9540, CEC, SGIP, OGPe | ||
Keystone EMS
The Keystone EMS cloud platform and microgrid controller secures your energy using advanced tools, including:
- Automated scheduling and controls
- Integrated controls for solar, storage, EV charging, generators, and other devices
- Real-time insights and monitoring
- O&M reporting and alarming tools
- Scalable from individual projects to portfolios of assets
