Project Background

A leading paint manufacturer commissioned a new logistics warehousewith a pre-installed 1MW PV system. Recognizing the high volatility andsubstantial spread in the local electricity market, the client's primaryobjective was to leverage energy storage to strategically absorb PV surplus andmaximize revenue by selling power back to the grid during peak-price hours.

Client Demands

• Capitalize on a significant peak-valleyelectricity price spread (peak ≈400€/MWh, valley ≈100€/MWh).
• Install ESS to store PV energy duringlow-cost periods and sell it back to the grid during high-price hours tomaximize sales revenue.

CESC Solution

• High-CapacityDeployment: Implemented 10 Mercury 233 ESS units in a pure grid-tiedconfiguration.
• Arbitrage Strategy: Designed toexecute a PV-paired storage strategy for optimal peak-valley priceharvesting.
• Advanced Communications: Utilized anindustrial-grade switch to simplify wiring and optimize communication forthe 1-Master, 9-Slave parallel configuration.
• Optimized Power Layout: Employed two5-to-1 grid-connection cabinets to enhance safety and efficiency in power linerouting.

Key achievements

• Maximized Revenue Potential: Successfullyconfigured a high-capacity system to exploit the 4× price difference betweenpeak and off-peak electricity.
• Enhanced Reliability: Robustmulti-machine parallel operation ensured high system security and efficiency.
• Integrated Monitoring: Multi-meterlayout provides real-time, comprehensive data on storage and PV performance viaa unified EMS interface.

Solution Expansion & Upgrade Applications

• Scalable Framework: The modular design ofthe Mercury 233 allows for future capacity expansion.
• Replicable Model: Provides a blueprintfor other industrial clients with large PV capacity seeking to maximize gridsales revenue through arbitrage.