Case 1: 160kW/416kWh Hotel Energy Storage System – Sustainable Energy Independence
Location: A star-rated hotel with power shortage
Problem Solved
This 5-star hotel, equipped with a 100kWp rooftop solar array, faced unsustainable energy costs despite its renewable investments. With 150MWh annual consumption across HVAC systems, EV chargers, and leisure facilities, the property struggled with 40% grid dependency and volatile pricing. During peak hours, grid instability threatened guest experience, while frequent diesel generator use raised noise complaints and environmental concerns.
Solution & Benefits
MECC deployed a 160kW/416kWh air-cooled battery energy storage system using 2×80kW DEYE hybrid inverters and 314Ah high-voltage modules. Key innovations included:
Hybrid Inverter Synergy:
Dual MPPT technology optimized solar self-consumption by 35%, reducing daytime grid imports. During peak demand (18:00–22:00), the system discharged stored energy, slashing monthly bills by 34%.
Smart Load Management:
AI-driven algorithms prioritized critical loads (e.g., elevators, security systems) during outages, maintaining 100% uptime for guest amenities.
Impact
Eliminated 210 tons/year of CO₂ emissions compared to diesel backups.
Enabled 24/7 operation of critical systems during outages, boosting guest satisfaction.
Positioned the hotel as a sustainability leader, attracting eco-conscious clientele.
Case 2: 320kW/640kWh Island Factory Energy Storage System – Grid Stability in Remote Islands
Location: A factory on a Philippine island
Problem Solved
A remote factory on a low-lying island faced challenges: A factory on a remote island faced unstable grid power and costly diesel generator reliance. The system needed to operate independently, ensuring 24/7 power for critical machinery and eliminating downtime risks during outages. The harsh marine environment further strained traditional storage systems.
Solution & Benefits
MECC engineered a 320kW/640kWh industrial energy storage system featuring:
Grid-Independent Operation
Designed for full off-grid functionality, the system integrates 4×80kW DEYE hybrid inverters (IP65-rated) with 314Ah high-voltage lithium battery modules (320kW/640kWh).
Seamless transition to battery power during grid failures (<20ms switchover), maintaining critical loads like CNC machines and molding equipment.
Durability in Harsh Environments
Inverters: IP65-rated enclosures protect against dust and water jets, ideal for coastal salt spray and humidity.
Batteries: IP20-rated modules with corrosion-resistant terminals, optimized for moderate outdoor exposure (non-submersion).
Redundancy & Safety
N+1 Module Redundancy: Battery clusters ensure 99.99% uptime; single module failures do not disrupt operations.
Thermal Management: Phase-change material cooling prevents overheating, while BMS monitors voltage/temperature to prevent thermal runaway.
Impact
Reduced CO₂ emissions by 380 tons/year vs. coal backups, eliminated 80% diesel fuel costs.
Achieved zero downtime during 3 grid outages since installed, ensured the continuity of production.
Maintained 99.98% system availability, critical for high-precision manufacturing.
Withstood typhoon-force winds (IP65 inverters) and 95% humidity.