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Peak-Valley Arbitrage

For Industry electricity saving

Maximize Factory Savings with Peak and Valley Energy Arbitrage

In today’s dynamic energy market, managing costs is more critical than ever for factories and industrial facilities. One of the most effective strategies for reducing energy expenses is leveraging energy arbitrage—a method where you take advantage of the price differences between peak and valley periods when buying power from the grid. By strategically charging batteries during low-cost valley periods and discharging them during high-cost peak periods, factories can significantly reduce their overall energy costs while ensuring a steady and reliable power supply.

FFD POWER Peak-Valley Solution

Distributed AC coupling BESS

FFD Power’s Cabinet BESS offers a nominal capacity of 233 kWh with a 100 kW charging and discharging power. This scalable solution, ranging from 233 kWh to 7 MWh, is ideal for small to medium-sized businesses and industrial users implementing peak-valley arbitrage strategies. Each battery cluster is connected to an independent Power Converting System (PCS), ensuring that every cabinet operates autonomously. In the event of a fault in one cabinet, the other cabinets continue to function smoothly, maintaining uninterrupted performance without being affected by the issue.

Concentrated DC coupling BESS

FFD Power’s Containerized BESS offers a nominal capacity of 3.42 MWh with charging and discharging power ranging from 1250 kW to 1725 kW. This scalable solution, extending from 3.42 MWh to 102.6 MWh, is perfect for medium to large-scale industrial users and grid operators implementing peak-valley arbitrage. The batteries are separate from the Power Converting System (PCS), allowing for easy scalability by connecting multiple systems in parallel to the grid for larger capacities. This design is both compact and cost-effective, making it an ideal choice for maximizing efficiency and savings.

System design

7MWH Distributed BESS

FFD Power’s System connects 30 cabinets in parallel on the AC side, each equipped with a Power Converting System (PCS) delivering up to 100 kW of continuous charging and discharging power. Each cabinet includes a 233 kWh LiFePo4 battery storage system and its own Energy Management System (EMS). A central EMS communicates with all cabinet EMS units and the meter at the connection point to control charging and discharging power and timing. Additionally, transformer capacity protection is activated to prevent overpower during battery charging, and a zero export function ensures that no energy is fed back into the grid during discharge.

24MWH Concentrated BESS

FFD Power’s System connects 7 containerized BESS units in parallel on the AC side, following transformers that convert the 690Vac output from 1250 kVA PCS to the rated connection point voltage. Each containerized BESS includes a 3.42 MWh LiFePo4 battery, a 1250 kW Power Converting System (PCS), an AC transformer, and its own Energy Management System (EMS). A central EMS coordinates with all container EMS units and the meter at the connection point to manage charging and discharging power and timing. Transformer capacity protection is activated to prevent overpower during charging, while a zero export function ensures no energy is fed back into the grid during discharge.

Automatic arbitrage BESS

On Thursday, August 29, 2024, the price and volume curve in Bulgaria shows the lowest electricity price between 03:00 and 06:00, averaging 48 Euro/MWh. During this period, we can set the system to charge the battery fully in 3 hours. The highest price, averaging 500 Euro/MWh, occurs between 19:00 and 21:00, where we can discharge the battery completely in 2 hours. Our Energy Management System (EMS) allows for precise control, with the ability to adjust charging or discharging power every 15 minutes, maximizing your financial benefits.

In addition to pre-setting charging and discharging power and time, our system integrates essential features to ensure optimal performance and protection:

  1. Transformer Capacity Protection:
    This feature prevents the total power from exceeding the nominal capacity of your transformer. For example, if you have a 1 MW transformer with a load power of 300-600 kW and a 500 kW/1 MWh BESS, the system automatically adjusts the battery charging power based on the load. If the load is at 300 kW, the battery can charge at its full 500 kW, as the total power (800 kW) is within the transformer’s 1 MW capacity. If the load increases to 600 kW, the EMS automatically reduces the battery charging power to 400 kW, ensuring the total power remains within the 1 MW limit.

  2. Zero Export Function:
    To prevent energy waste during battery discharge, our zero export function ensures that the battery discharges only the amount of power needed by the load, without sending excess energy back to the grid. This is crucial as the grid typically does not pay for energy returned, and maximum benefit is achieved when the load fully utilizes the energy from the battery.

15 Mins Action

A 15-minute setting provides more granular control, enabling the system to be more responsive to market conditions, manage loads more effectively, and maximize financial returns. In Europe, where trading prices change every 15 minutes, this capability is especially crucial for staying competitive and optimizing energy costs

  • Higher Flexibility and Precision:
    With a 15-minute setting, the system can adjust charging and discharging power more frequently. This allows you to respond quickly to changes in electricity prices, load demands, or grid conditions, optimizing energy usage in smaller increments. In Europe, where trading prices are updated every 15 minutes, this precision is particularly valuable for capturing short-term market opportunities. In contrast, a 1-hour setting might miss these brief but significant price fluctuations.

  • Maximized Cost Savings:
    Electricity prices can vary significantly within an hour. A 15-minute setting enables the system to capitalize on these fluctuations, charging during brief periods of low prices and discharging during high-price intervals. In markets like Europe, where prices update every 15 minutes, this setting ensures you are always optimizing your costs in real-time, resulting in greater savings compared to a 1-hour setting.

  • Better Load Management:
    In facilities with variable loads, a 15-minute setting allows for more precise load balancing. The system can better align energy supply from the battery with actual demand, reducing the risk of overloading the transformer or underutilizing the battery’s capacity.

  • Enhanced Grid Interaction:
    With more frequent adjustments, the system can better synchronize with grid conditions, such as demand response signals or frequency regulation needs. This can lead to additional revenue streams if the system participates in grid support programs, which often operate on short time intervals.

  • Increased System Efficiency:
    The ability to fine-tune the system every 15 minutes ensures that the battery operates closer to its optimal state of charge and discharge, prolonging its lifespan and improving overall efficiency.