On August 12, 2026, UZ Energy successfully installed a 1MW/2.088MWh commercial and industrial energy storage system (BESS) in Bulgaria, supporting a factory with continuous operations and an existing 890kWp solar PV system.
The project is designed to improve energy flexibility through solar self-consumption optimization, peak shaving and intelligent energy management. By coordinating battery operation with the factory's electricity demand and local tariff structure, the system enables energy to be stored during lower-cost periods and discharged when electricity demand and prices are higher.
The factory operates 24 hours a day, with a maximum load of approximately 870kW and an average daily load of around 200--300kW. The installed storage system provides up to 1MW of charging and discharging power with 2.088MWh of storage capacity.
Based on the current operating strategy and factory load profile, the system is expected to charge around 1.9MWh during off-peak periods and discharge stored energy during peak periods to support factory consumption. By shifting part of electricity demand away from higher-cost periods, the system helps optimize electricity usage while providing greater control over the factory's energy management.
At the same time, the battery system works together with the factory's existing 890kWp solar PV installation. When solar generation exceeds immediate on-site demand, available energy can be stored and used later when solar output decreases. This helps increase the utilization of locally generated renewable electricity and reduces reliance on grid electricity during higher-cost periods.
Bulgaria's Growing Energy Storage Market
The project is being deployed as Bulgaria continues to strengthen renewable energy integration and energy storage infrastructure.
Through its Recovery and Resilience Plan, Bulgaria has identified renewable energy deployment, electricity storage and grid infrastructure as important elements of its green transition. The plan includes investments supporting renewable energy sources, electricity storage and interconnection capacity, reflecting the increasing role of storage in integrating variable renewable generation.
Bulgaria is also advancing the National Infrastructure for Storage of Electricity from Renewable Sources (RESTORE) initiative, supported through the European Union's Recovery and Resilience Facility. The program aims to expand electricity storage capacity and improve the flexibility, security and stability of Bulgaria's electricity system while enabling a higher share of renewable energy integration.
Source: National Infrastructure for Storage of Electricity from Renewable Sources (RESTORE) --- European Commission
These developments reflect a broader European trend: energy storage is moving beyond traditional backup applications and becoming an important tool for renewable integration, peak management and more flexible electricity consumption.
For industrial users, this creates new opportunities to combine solar generation, battery storage and energy management strategies to improve operational efficiency and reduce exposure to changing electricity prices.
Optimizing Factory Energy Use Through Storage
For commercial and industrial customers, the value of an energy storage system depends not only on battery capacity, but also on how effectively the system operates.
A battery with the same capacity can achieve very different results depending on electricity demand patterns, solar generation profiles and local electricity pricing. The timing of charging and discharging directly influences the economic value created by the system.
In the Bulgarian project, the storage system is configured around the factory's actual operating conditions. During lower-price periods, the battery can absorb energy, while during higher-price periods it can discharge stored electricity to support factory loads.
Under the current operating strategy and local peak-to-off-peak electricity price difference, the system is estimated to generate approximately €290--€320 per day in gross peak-valley arbitrage value. Based on current operating assumptions, the annual economic value could exceed €100,000.
Actual results may vary depending on electricity pricing mechanisms, factory load profile, solar generation, battery efficiency, degradation, operating strategy and other site-specific conditions.
Supporting Long-Term Industrial Energy Management
The UZ Energy commercial and industrial storage system deployed in Bulgaria is designed for an operating life of approximately 10 to 15 years, depending on operating conditions and maintenance.
Over the long term, the value of industrial energy storage comes from more than electricity price differences alone. By combining renewable generation, battery storage and intelligent control strategies, industrial facilities can gain greater flexibility in how and when energy is consumed.
The Bulgaria project demonstrates this approach by integrating a 1MW/2.088MWh battery storage system with an existing solar PV installation and a continuously operating factory load.
Rather than simply adding additional energy capacity, the system provides a way to actively manage electricity consumption, improve solar utilization and adapt to changing energy conditions.
As renewable energy adoption continues across Europe, commercial and industrial energy storage will play an increasingly important role in helping businesses build more flexible, efficient and resilient energy systems.
For UZ Energy, this project represents another practical example of how battery storage can support industrial customers by combining reliable hardware with site-specific energy management strategies.
