ESS-500K
Turnkey 500kWh containerized ESS with 250kW PCS, integrated EMS, and outdoor-rated enclosure for commercial and indus...
Product Overview
Description
The Narada ESS-500K is a turnkey 500kWh containerized energy storage system designed for commercial and industrial applications.
The system includes integrated lithium-ion batteries, 250kW bidirectional PCS, energy management system, and thermal management in a 20-foot container.
Pre-engineered and factory-tested for rapid deployment and reliable operation in peak shaving and renewable integration applications.
Product Series
ESS
Primary Application
Commercial peak shaving
Key Features
- Turnkey containerized solution
- Integrated 250kW bidirectional PCS
- Advanced energy management system
- Active thermal management
- Fire detection and suppression
- Remote monitoring and control
Specifications
| Energy Capacity | 500kWh |
|---|---|
| Power Rating | 250kW continuous |
| Efficiency | ≥ 88% round-trip |
| Response Time | < 100ms |
| Container | 20-foot ISO standard |
| Operating Temperature | -10°C to +45°C |
Applications
Commercial peak shaving
Electronic system design
Industrial load shifting
Industrial automation and control
Solar-plus-storage
Renewable energy systems
Backup power
Electronic system design
Demand response
Electronic system design
FAE Expert Insights
"The ESS-500K is an excellent balance of capacity, power, and cost for commercial applications. I've worked on numerous installations where this system delivered significant demand charge savings for industrial customers. The factory integration and testing reduces field commissioning time significantly - most sites are operational within 2-3 weeks of delivery. The integrated EMS provides sophisticated control strategies including peak shaving, time-of-use optimization, and solar self-consumption. I particularly appreciate the comprehensive safety systems including fire suppression and gas detection. For customers new to energy storage, this turnkey approach eliminates many of the integration risks."
Excellent turnkey solution for commercial energy storage with rapid deployment capability
— Steven Chen, BeiLuo
Frequently Asked Questions
What control strategies does the ESS-500K EMS support?
The ESS-500K EMS supports multiple control strategies: 1) Peak shaving - automatically discharging to reduce demand charges during peak periods; 2) Time-of-use optimization - charging during low-cost periods and discharging during high-cost periods; 3) Solar self-consumption - maximizing use of on-site solar generation; 4) Demand response - responding to utility signals for load reduction; 5) Frequency regulation - providing grid stabilization services (where permitted); 6) Backup power - providing uninterruptible power for critical loads during outages. The EMS can combine multiple strategies with user-defined priorities and schedules. Control parameters are configurable via web interface or API integration.
Contact us for EMS capabilities and control strategy configuration for your specific application.
How is the ESS-500K connected to the electrical system?
The ESS-500K connects at 480V AC three-phase and requires: 1) Main breaker - appropriately sized disconnect; 2) Utility interconnection - compliance with local utility requirements; 3) Protection relays - overcurrent, ground fault, and arc flash protection; 4) Metering - revenue-grade metering for utility interconnection; 5) Communication - internet connection for remote monitoring. For medium voltage grid connection, a step-up transformer is required. The system includes all internal switchgear and protection. External electrical work typically includes conduit runs, main disconnect, and utility coordination. Narada provides electrical single-line drawings and coordination studies.
Contact us for electrical connection requirements and integration engineering support.
What maintenance is required for the ESS-500K?
The ESS-500K maintenance program includes: Monthly - remote monitoring review, alarm verification, performance data analysis; Quarterly - visual inspection, HVAC filter replacement, connection torque checks; Annually - comprehensive system testing, protection relay testing, fire suppression inspection, calibration verification; 5-year - major component inspection, battery capacity testing, PCS maintenance. The system includes predictive maintenance algorithms that identify potential issues before they cause failures. Remote monitoring allows most diagnostics to be performed without site visits. Typical annual maintenance cost is 1-2% of system cost. Narada offers maintenance contracts with guaranteed uptime.
Contact us for maintenance programs and service contracts for your ESS installation.
What is the round-trip efficiency of the ESS-500K?
The ESS-500K achieves ≥ 88% round-trip efficiency (AC to battery to AC) under standard test conditions. Efficiency breakdown: PCS efficiency ~96% (each direction), battery charge efficiency ~95%, battery discharge efficiency ~98%, auxiliary loads (thermal management, controls) ~2-3%. Efficiency varies with operating conditions: Higher at partial load (up to 90% at 50% power), slightly lower at full power, temperature dependent (optimal at 20-25°C). Annual energy throughput efficiency accounts for standby losses and typically averages 85-87%. The EMS optimizes efficiency by managing operating temperature and charge/discharge rates.
Contact us for efficiency curves and annual energy modeling for your specific operating profile.
How does the ESS-500K handle grid outages?
The ESS-500K provides backup power capability with < 100ms transfer time. During grid outage: 1) System detects loss of grid and islanding condition; 2) PCS switches to off-grid mode; 3) Battery discharges to support critical loads; 4) System maintains voltage and frequency for connected loads. Backup duration depends on load power and battery SOC - at 250kW load with 100% SOC, provides approximately 2 hours backup. The EMS can prioritize loads and shed non-critical loads to extend backup duration. When grid returns, system automatically resynchronizes and reconnects. For extended backup requirements, the system can integrate with backup generators.
Contact us for backup power sizing and critical load analysis for your facility.