Integration of BESS into Uzbekistan's Energy System

Introduction

Uzbekistan's energy system is undergoing an active transformation. The country is experiencing a significant increase in electricity demand due to population growth, industrial development, and accelerated urbanization. At the same time, Uzbekistan aims to reduce its dependence on fossil fuels and increase the share of renewable energy sources (RES) in its energy balance to 25% by 2030 [1].

To achieve these goals, the implementation of modern technologies, including battery energy storage systems (BESS), is essential. These systems play a key role in integrating solar and wind energy, improving grid stability, optimizing energy consumption, and minimizing risks associated with the intermittency of RES.

1.    About BESS

Battery Energy Storage Systems (BESS) are complex technological solutions that store energy for later use. The main components of BESS include [2]:

Figure 1: Main components of the BESS system

• Battery system: Contains individual battery cells that convert chemical energy into electricity and vice versa. These cells are assembled into modules, which in turn form battery packs.
• Battery Management System (BMS): Ensures battery safety by monitoring cell conditions, measuring parameters such as State-of-Charge (SoC) and State-of-Health (SoH), and protecting against fire hazards and other threats.
• Power Conversion System (PCS): Converts direct current (DC) produced by the batteries into alternating current (AC) for consumption. BESS uses bidirectional inverters that allow both charging and discharging of batteries.
• Energy Management System (EMS): Monitors and controls the energy flow within the storage system. EMS coordinates BMS, PCS, and other BESS components, analyzing energy data to optimize resource management.

Depending on functionality and operating conditions, BESS may include fire suppression, smoke detection, temperature control, cooling, heating, ventilation, and air conditioning (HVAC).

The safety systems have their own monitoring and control units that provide the necessary conditions for safe operation of the BESS by monitoring its parameters and responding to emergency situations

2.    Advantage and disadvantage of BESS

BESS play a key role in the development of modern energy systems. However, like any technology, they have their strengths and weaknesses:

3.    Global Experience in BESS Deployment

Global experience demonstrates that BESS integration plays an important role in the sustainable development of power systems. For example:

1.    United States [8]:

• The U.S. leads in BESS deployment. In 2023, the energy storage market was valued at $711.9 million, with a projected annual growth of 30.5% until 2030. The Inflation Reduction Act 2022 provides funding and incentives to accelerate the transition to clean energy.
• Example: The Moss Landing Energy Storage Facility (400 MW/1600 MWh) is one of the largest BESS projects globally, designed to manage peak loads.
• California: With a goal of 100% clean energy by 2045, BESS capacity grew by 1,250% over five years, reaching 7.3 GW.

2.    China [10]:

• China is rapidly expanding its BESS sector, installing around 20 GW of capacity in 2023 alone, with projections to reach 40 GW by 2025.
• The government mandates energy storage quotas, requiring up to 20% of RES projects to include BESS.
• The market for energy storage systems in China is projected to grow at a compound annual growth rate of 18.9% from 2025 to 2034, reaching a significant value by the end of the period. China is expected to become the global leader in terms of installed storage capacity, with electrochemical batteries, especially lithium-ion batteries, dominating the market.

3.    European Union [11]:

• Key investment hubs include the UK, Germany, and Italy, supported by robust electricity markets and regulatory policies.

Figure 2: Comparative analysis of six European electricity systems

• Success depends on factors such as generation mix, grid infrastructure and market mechanisms. For example, Germany uses BESS to balance wind generation between northern and southern regions, and the UK has seen strong market growth due to flexible tariffs and government support.
• France uses BESS to manage its nuclear generation, balancing stable nuclear plant output with volatile demand.
• In Spain, BESSs are helping to integrate solar generation, given the country's significant solar potential and the need to stabilize the grid during periods of high load.
• Rabobank's study emphasizes that the most promising markets include countries with high renewable energy deployment rates and well-developed grid interconnections.

In addition to the aforementioned aspects, it is worth noting that the global market for BESS is projected to reach USD 150 billion by 2030. The global market for BESS is projected to reach USD 150 billion by 2030. However, there are several challenges to its development, including regulatory barriers, lack of standards, and dependence on supplies from a limited number of countries. For example, the US imports 90% of its energy storage equipment from China, while Europe imports 80%. To reduce these risks, it is necessary to diversify and strengthen domestic production capacity [9].

Figure 3: Projected volume of new 400 GWh BESS installations globally by 2030

Furthermore, demand for BESS varies from region to region. In Germany, for example, there is a need to balance power generation between the wind-dominated northern regions and the wind-deficient southern regions. In Middle Eastern countries such as the UAE, large-scale solar projects require BESS to prevent intermittency when weather conditions change.

These examples underscore the importance of developing customized strategies to successfully integrate BESS into the energy systems of different countries, including Uzbekistan.

4.    BESS Projects in Uzbekistan

Uzbekistan is actively integrating BESS into its energy infrastructure. Although no fully operational BESS projects exist yet, several are under development, with the first storage system already installed and nearing launch.

1. First Energy Storage System in Fergana Region

In 2024, Uzbekistan completed the installation of its first energy storage system in Fergana, which will become part of an energy storage station. The facility includes 90 battery blocks and a distribution system, capable of supplying electricity to 600,000 consumers by storing daytime energy for use during peak hours.

Commercial operation began on January 1, 2025 [4].

Figure 4: BESS systems in Fergana Region

2. Wind Farm and BESS in Beruniy District

Saudi company ACWA Power is constructing a 200 MW wind power plant in Beruniy (Republic of Karakalpakstan), with a 100 MW BESS. The launch is planned for Q4 2026 [5].

3. Solar Power Plant with BESS in Bukhara Region

UAE-based Masdar is developing a 250 MW solar power plant with an integrated 63 MW/126 MWh BESS, the first project in Central Asia to receive a World Bank-backed guarantee [6].

4. Hybrid Solar-Wind Power Plant in Navoi

French company Voltalia is planning a hybrid solar-wind energy park in Navoi, which will include BESS [7].

These projects highlight Uzbekistan's growing interest in energy storage technologies. Integrating BESS enhances grid resilience, increases RES share, and ensures stable electricity supply during peak periods.

By 2030, Uzbekistan aims to generate over 40% of its electricity from RES and achieve an energy storage capacity of 4.2 GW [3].

5.    Conclusion

The integration of BESS into Uzbekistan's energy system aligns with global energy trends. Worldwide, BESS is considered a key tool for ensuring sustainable energy supply, RES integration, and carbon footprint reduction. International experience demonstrates that energy storage accelerates the transition to a low-carbon economy and enhances grid flexibility.

For Uzbekistan, BESS offers substantial benefits, including greater energy security, reduced peak loads, and increased foreign investment. It also contributes to environmental sustainability, supporting national and global emissions reduction goals.

Further technological advancements, cost reductions, and international collaboration will be crucial for Uzbekistan to establish a modern, resilient, and sustainable energy system based on BESS.