Introducing the KSTAR Radawa hotel case study

With the growing emphasis on sustainability and energy efficiency, hotels are facing unique challenges in managing their energy demand curves, especially places like Bacówka Radawa & SPA in Poland, which focus on recreation, wellness and dining services.

Although many hotels are deploying photovoltaic installations as part of their sustainability efforts and cost-saving measures, they face a significant mismatch between energy production and demand, limitations on grid connection capacity, and low buyback prices for energy sent back to the grid.

This is typically caused by specific energy consumption patterns, such as higher demand during breakfast hours and increased use of wellness facilities and dining services in the evenings.

Challenge

1. Network connection power limitations, which restrict the amount of energy that can be sold back to the grid.
2. More PV power plants with different production patterns, leading to a mismatch with the hotel's energy needs.
3. The introduction of a new hourly billing system that requires limiting peaks and increasing self-consumption.
4. Very low energy prices when selling to the grid compared to energy costs.

Products
In the hotel, a KSTAR BluePulse series energy storage system was installed, featuring the KAC50DP BC100DE all-in-one solution for commercial and industrial use.

The system includes 3 KAC50DP inverter units and a BC100DE battery, integrated with an energy management system.

This allows the hotel to charge and discharge batteries at 150 kW, storing over 300 kWh of energy during the day and using it during peak demand hours.

Using CATL battery cells, the KAC50DP-BC100DE solution stands out for its exceptional safety, efficiency, and flexibility.

Results

1. Peak shaving: The energy storage system successfully reduced morning and evening peaks, decreasing the hotel's reliance on grid energy during these high-demand hours.

2. Increased self-consumption: By storing surplus energy during the day and using it during peak demand times, the hotel achieved an increase in self-consumption levels, leading to lower energy costs.

3. Flexibility in energy management: The energy management system provided the hotel with flexibility in managing its energy consumption by optimizing patterns of energy production and use.

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