Modular. Safe. Scalable.
A Battery Energy Storage System stores electrical energy in electrochemical cells and delivers it through a Power Conversion System (PCS) and Energy Management System (EMS). Modern Nexsun BESS platforms are modular, containerized, and engineered for safe, long-life operation.
We use LFP (LiFePO₄) chemistry — the safest, most thermally stable battery technology, with ≥94% DC round-trip efficiency and 8,000+ cycle life at 25°C.
≥ 94%
DC Round-Trip Efficiency8,000+
Cycles @ 25°C5 MWh
Max Utility CapacityLFP
Safe Chemistry
Core Functions Delivered
Energy Arbitrage
Charge during low-cost periods, discharge at peak prices to reduce energy spend.
Peak Shaving & Demand Mgmt
Reduce peak demand and lower monthly demand charges for C&I customers.
Renewable Firming
Smooth solar output and increase usable renewable energy, reducing curtailment.
Grid Services & Ancillary
Frequency regulation, voltage support, spinning reserve, black start capability.
Backup Power & Resilience
Seamless transition to stored energy for critical loads during grid outages.
Capacity Deferral
Defer or avoid costly network upgrades by reducing peak network loading.
C&I BESS Datasheet
Optimized for rooftop and plant-level installations where space, fast payback, and operational continuity matter.
| Parameter | Specification |
|---|---|
| Battery Rated Capacity | 314 Ah |
| Battery Configuration | 1P52S |
| DC Rated Energy | 261.2 kWh |
| Max Charge / Discharge Rate | 0.5C / 0.5C |
| DC Round-Trip Efficiency | ≥ 94% |
| Battery Chemistry | LFP (LiFePO₄) |
| Cycle Life | ≥ 8,000 @ 25°C |
| Rated PCS Power | 100 kW |
| AC Output Voltage | 400 / 480 Vac |
| Frequency | 50 / 60 Hz |
| Cooling | Liquid Cooling |
| Fire Suppression | Aerosol + Water |
| Enclosure Rating | IP55 |
| Operating Temperature | -30°C to +55°C |
| Compliance | UL9540 / CE / IEC |
Design Highlights
Fast Commissioning
Factory-tested skids with plug-and-play interfaces for rapid deployment on commercial sites.
Advanced EMS
Demand charge optimization, scheduled dispatch, and remote diagnostics built-in as standard.
Compact Footprint
Designed for commercial rooftops and plant rooms with minimal maintenance requirements.
Typical Use Cases
- Manufacturing facilities reducing peak demand charges
- Facilities requiring short-duration energy ride-through
- Commercial campuses in demand response programs
Utility BESS
Maximum Capacity — Per Site — Containerized
| Parameter | Specification |
|---|---|
| Battery Rated Capacity | 314 Ah |
| Battery Configuration | 1P416S |
| DC Rated Energy | 5.016 MWh |
| Max Charge / Discharge | 0.5C / 0.5C |
| DC Round-Trip Efficiency | ≥ 94% |
| Battery Chemistry | LFP (LiFePO₄) |
| Cycle Life | 8,000 @ 25°C |
| Enclosure | 20 Ft Container |
| Operating Temperature | -40°C to +55°C |
| Fire Suppression | Gas + Water + Blast Panels |
| Compliance | UL9540 / 9540A / CE / IEC / KC |
Project Services & Lifecycle Support
- Feasibility & Site Assessment — load profiling, grid interconnection study, financial modelling
- Engineering & Design — SLDs, civil/structural design, thermal analysis
- Procurement & FAT — component sourcing, factory acceptance testing, quality assurance
- Installation & Commissioning — civil works, electrical integration, grid sync, performance testing
- O&M Services — remote monitoring, preventive maintenance, spare parts, reporting
- End-of-Life & Recycling — battery repurposing, recycling pathways, responsible disposal
Commercial Models
CAPEX
Full ownership + performance warranty
EPC + O&M
Turnkey delivery + long-term support
Energy-as-a-Service
PPA / third-party financing
Availability SLA
Performance-based guarantees
