Project Brief

Inverter System: A Deye 80kW high-voltage hybrid inverter, selected for its strong PV input capabilities and excellent grid-interaction performance.

Energy Storage Core: Dawnice 225kWh DC Outdoor Cabinet (B509-225-D).

System Rating: A 716.8V high-voltage system configured with 314Ah high-capacity cells.

Energy Capacity: Nominal energy of 225.07kWh, delivering 202.56kWh of usable energy at 90% DOD.

Environmental Protection: IP54-rated enclosure with C3 anti-corrosion grade (C5 optional) to withstand Romania’s variable outdoor climates.

The project owner is a mid-sized manufacturing enterprise located in Romania. With the expansion of their production lines, the company was hit by several operational pain points

Surging Peak Electricity Costs: High daytime electricity rates significantly inflated operational expenses, creating an urgent need for “peak shaving and valley filling” to optimize power consumption costs.

Grid Stability Concerns: Occasional voltage fluctuations in the local grid posed risks to high-precision manufacturing machinery, threatening production continuity.

Mandatory Green Transition: To align with EU emission reduction policies, the enterprise sought to maximize the self-consumption rate of their rooftop solar PV system and reduce reliance on traditional grid power.

Project Highlights

• Ultimate Security and Active Fire Fighting Safety is the foundational metric for any commercial installation. The Dawnice 225kWh outdoor cabinet features a comprehensive, multi-level battery warning and protection strategy. Crucially, the cabinet is equipped with a dedicated automatic fire alarm and an automatic fire extinguishing system, capable of neutralizing anomalies at the embryonic stage to safeguard the facility.

• Exceptional Lifespan and Strong ROI This system delivers an exceptional return on investment. Under standard conditions (25 degrees Celsius, 0.5C/0.5C, 90% DOD), the battery cell life boasts a cycle life of 8000 cycles or more (70% EOL), achieving a cumulative discharge energy of up to 361.4MWh. Backed by a 5+5 years warranty period, the enterprise is guaranteed over a decade of lowered utility costs and minimal asset depreciation.

• Intelligent Climate Control for All-Weather Operations Romania experiences harsh winter lows and hot summer peaks. The Dawnice storage cabinet features a broad operating temperature range of -30 to 55 degrees Celsius. Its built-in intelligent air-cooling climate control system ensures that the battery cells remain within their optimal thermal zone. Paired with CAN/RS485 communication interfaces, plant operators can seamlessly monitor system health via the central EMS, ensuring continuous and stable long-term operation.