String-Type PCS for Utility-Scale Deployment in Italy
Project Overview
In response to Italy’s growing demand for bankable, utility-scale storage projects participating in the day-ahead market, FFD POWER deployed a 2.5MW/5MWh BESS near the Autodromo Enzo e Dino Ferrari to support day-ahead arbitrage. This site is part of a larger 40MW/80MWh rollout, using a string-type battery container and string-type PCS architecture to improve modularity, maintainability, and operational resilience. Under EMS control, the BESS follows a day-ahead charge/discharge schedule to capture wholesale price spreads, with disciplined SOC management to ensure repeatable delivery across utility-scale sites.
Project Background
Italy’s wholesale electricity market presents clear opportunities for day-ahead price-spread capture, encouraging the deployment of grid-connected BESS projects. Day-ahead participation requires reliable scheduling, disciplined state-of-charge (SOC) management, and predictable execution of charge/discharge profiles. As project sizes scale up, developers also prioritize certified, modular architectures that reduce deployment and O&M risk. This project required a compliant and field-proven solution using a string-type battery container paired with string-type PCS to support long-term availability and repeatable performance across a multi-site rollout.
Project Challenge
- Day-Ahead Scheduling Accuracy: The BESS must reliably execute day-ahead charge/discharge schedules to capture wholesale price spreads.
- Certification & Compliance: The solution needed a complete certification package suitable for utility-scale installation in Italy.
- Utility-Scale Deployment: The site is part of a larger rollout (40MW/80MWh), requiring standardized design for repeatable delivery and O&M.
FFD POWER Solution
FFD POWER delivered a 2.5MW/5MWh grid-connected BESS for day-ahead arbitrage as part of a larger 40MW/80MWh deployment. The solution adopts a string-type battery container and string-type PCS architecture, enabling modular operation, simplified maintenance, and improved fault isolation. The EMS supports schedule-based dispatch: it implements the day-ahead charging and discharging plan, manages SOC boundaries, and enforces power and energy limits to ensure repeatable execution. The project is supported by a complete compliance package suitable for installation and operation in Italy.
System Specifications
- Project scale : 2.5MW/5MWh (Full project 40MW/80MWh)
- BESS POWER : 2.5 MW
- BESS Capacity : 5 MWH
- Product used : Galaxy5015 String-type (2.5MW/5MWh) + EMS
- Architecture: Grid-Connected String-Type BESS for Peak–Valley Energy Arbitrage
Operational Logic: Day-Ahead Arbitrage Dispatch
The system is operated to follow a schedule-based dispatch strategy aligned with day-ahead market price spreads:
- Day-Ahead Schedule Execution: Based on the day-ahead plan, the EMS schedules charging during predicted low-price hours and discharging during predicted high-price hours to maximize arbitrage revenue.
- SOC Window Management: The EMS maintains defined SOC limits and reserves to ensure the next-day schedule can be executed reliably, avoiding over-charge/over-discharge and improving repeatability.
- String-Type Modular Operation: The string-type architecture supports modular dispatch, improved fault isolation, and efficient maintenance—helping sustain availability across utility-scale sites.
