5 BESS payback cases
at enterprises of Ukraine: real figures

Battery Energy Storage Systems (BESS) is not just a technological trend, but a tool of proven financial efficiency. We have compiled verified C&I implementation cases across diverse industrial sectors with audited ROI metrics. Each case details audited CapEx, monthly utility savings, payback period, and 10-year projected ROI. These verified figures enable accurate benchmarking of BESS financial feasibility for your facility.

"The Payback Period of BESS in Ukraine is accelerating due to two factors: rising electricity tariffs and network instability. Companies that invest now get a competitive advantage for 15-20 years." -- Head of Engineering, BESS Ukraine.

Case 1: Metallurgical Plant -- Peak Shaving 500 kW

Challenge & Problem Statement

A metallurgical enterprise in the Dnipropetrovsk region with a peak consumption of 2.8 MW paid a surcharge for exceeding the contractual capacity (1.5 MW) during the operation of the arc furnaces. Penalty coefficients for exceeding x2 and x3 increased the monthly electricity bill by ₴250-300 thousand. In addition, load spikes caused voltage sags, which affected the quality of products.

Solutions

Installed containerized BESS rated at 500 kW / 1000 kWh of peak shaving system. The intelligent EMS analyzes load profiles in real-time and automatically discharges during peak demand periods, cutting peaks to the contractual level of 1.5 MW. At night (the tariff is 40% lower), the battery is charged from the network.

Verified Financial & Technical Results

• Demand Charge Elimination: ₴250 thousand/month -- complete elimination of excess capacity penalties
• Tariff Arbitrage Savings: ₴45 thousand/month -- nighttime charging, peak-period discharge
• Voltage Stabilization: reduction in production waste by 12%
• Total Monthly Savings: ₴295 thousand
• Annual Financial Benefit: ₴3.54 M

Monthly Savings: Before and After BESS

Case 2: Shopping center - Replacement of a 100 kW diesel engine

Challenge & Problem Statement

A 12,000 m2 shopping center in Vinnytsia used a 200 kVA diesel generator as backup power. During regular power outages (an average of 8-12 times a month for 2-4 hours), the DSU consumed 30-40 liters of diesel fuel per hour. Monthly fuel costs amounted to ₴120-180 thousand. Noise and exhaust gases created discomfort for visitors, and the start-up of the DSU took 30-60 seconds, during which only the emergency systems worked.

Solutions

BESS 100 kW / 200 kWh is installed as the primary backup source with a switching time of 20 ms (UPS mode). DSU is left as the third backup level for long-term outages (more than 2 hours). EMS automatically switches the load of critical systems (lighting, cash register, cooling) to the battery in the event of a power failure. In addition, peak shaving was implemented during the hours of peak trading activity.

Verified Financial & Technical Results

• Economy on diesel fuel: ₴35,000/month -- 75% reduction in the use of DGU
• Savings on DSU maintenance: ₴8 thousand/month -- less engine hours, less maintenance
• Peak shaving: ₴12,000/month - peak tariff reduction
• Total Monthly Savings: ₴55 thousand
• Annual Financial Benefit: ₴660 thousand

Structure of monthly savings

Case 3: Agroholding / Elevator -- Uninterrupted drying of 200 kW

Challenge & Problem Statement

An elevator in the Poltava region with a capacity of 50,000 tons of grain storage was critically dependent on uninterrupted power supply for grain dryers. Stopping drying even for 2-3 hours during the season led to overheating of the grain, increase in humidity and loss of batch quality worth ₴500-800 thousand. During the 2024 season, power outages caused losses of ₴4.2 M (5 critical incidents).

Solutions

Installed BESS 200 kW / 400 kW*h of priority power supply of grain dryers and ventilation of silos. The system provides 2 hours of autonomous operation when the dryers are fully loaded. Integrated of SCADA elevator for automatic switching. In the off-season, BESS operates in the mode of peak shaving and tariff arbitration.

Verified Financial & Technical Results

• Loss prevention: ₴70,000/month (average weighted by season) -- 0 incidents of grain quality
• Peak shaving + arbitration: ₴28,000/month - tariff optimization in the off-season
• Total Monthly Savings: ₴98 thousand
• Annual Financial Benefit: ₴1.18 M
• Preserved product quality: 100% of batches meet standards

Comparison of damages: before and after BESS

Case 4: Logistics complex -- 300 kW refrigerating chambers

Challenge & Problem Statement

A logistics complex near Kyiv of 8,000 m2 of refrigerating and freezing chambers (-18 C and +2..+6 C) consumed 1.2 MW at peak time. A power outage of 4+ hours led to an increase in the temperature in the chambers above the critical threshold. One incident of a spoiled batch of frozen products - a loss of ₴1.5-2.5 M. In 2024 - 3 such incidents. In addition, peak tariffs in the summer period (air conditioning + cold) increased the bill by 57%.

Solutions

BESS 300 kW / 600 kW*h of priority power supply of compressor equipment of refrigerating chambers. Autonomous operation time - 2 hours at full load of refrigerators. A "thermal buffer" strategy has been implemented: before a predicted shutdown, the EMS lowers the temperature of the chambers by 3-5 C below normal, creating a reserve of cold. Peak shaving cuts the peak consumption of 1.2 MW to 900 kW.

Verified Financial & Technical Results

• Prevention of product spoilage: ₴125 thousand/month (weighted average) -- 0 incidents
• Peak shaving: ₴52 thousand/month - reduction of fines for peak consumption
• Tariff Arbitrage Savings: ₴18,000/month -- night charge, daytime discharge
• Total Monthly Savings: ₴195 thousand
• Annual Financial Benefit: ₴2.34 M

The structure of logistics complex economy

Case 5: Tier III data center -- 1 MW BESS

Challenge & Problem Statement

A Tier III commercial data center in Kharkiv with an IT equipment load of 800 kW and cooling systems of 400 kW had strict requirements for continuity: the SLA guarantees 99.982% availability (no more than 1.6 hours of downtime per year). The existing UPS system on lead batteries (VRLA) provided only 15 minutes of autonomy and required replacement every 3-4 years (replacement cost -- ₴3.2 M). The DSU started for 45-60 seconds. During the long blackouts of 2024 years, DSUs worked 180+ hours a month, spending ₴400-500 thousand on diesel fuel.

Solutions

BESS 1 MW / 2 MW*h replaces the lead UPS and acts as a buffer between the grid and the DSU. Switching time -- 10 ms (online UPS mode). The battery provides 1.5 hours of full autonomy, which gives time for planned start-up of the diesel engine without stress. In normal mode, BESS performs peak shaving and tariff arbitration. Resource LiFePO4 -- 10,000+ cycles (15+ years without replacement vs. 3-4 years for VRLA).

Verified Financial & Technical Results

• Economy on diesel fuel: ₴120,000/month -- BESS covers short outages without DGU
• Savings on UPS replacement: ₴67 thousand/month (amortization of the difference: ₴3.2 M every 3.5 years vs 0)
• Peak shaving + arbitration: ₴85 thousand/month
• SLA Improvements: Achieved 99.995% availability (Tier III+)
• Total Monthly Savings: ₴272 thousand
• Annual Financial Benefit: ₴3.26 M

Cost Comparison: VRLA UPS vs BESS

Summary table: 5 payback cases

Comparison of payback periods

Conclusions: why BESS pays off in Ukraine

The given cases demonstrate that BESS pays for itself in Ukraine in 2.5-4 years with a battery life of 15-20 years. This means that after payback, the company receives a net profit from savings within 11-17 years. Key factors of quick payback in Ukrainian realities:

• Unstable network: Regular outages create direct losses that BESS completely eliminates
• High peak tariffs: The difference between the night and peak tariff reaches 40-57%, which provides a profitable arbitrage
• Fines for exceeding: The coefficients of x2 and x3 for exceeding the contracted capacity are the fastest source of payback
• Product protection: For the food, pharmaceutical and agro industries, one incident of a spoiled batch can exceed the cost of the entire BESS

Do you want to calculate the payback of BESS for your enterprise? Click the button below or contact our AI assistant in the lower right corner of the screen.

Frequently Asked Questions about ROI BESS

What factors most affect the BESS payback period?

Three main factors: 1) The level of peak tariffs and fines for exceeding the contractual capacity - the higher they are, the faster the payback. 2) Frequency and duration of power outages -- enterprises with critical processes (refrigerators, dryers, IT) benefit the most. 3) The difference between the night and day rate -- the bigger the spread, the more the system earns on arbitrage. An additional factor is the cost of downtime: for data centers and logistics companies, one hour of downtime can cost more than a monthly payment for BESS.

Do these cases take into account the degradation of batteries over time?

Yes, all calculations are made taking into account the degradation of LiFePO4 batteries. Typical degradation profile: 95% capacity after 3,000 cycles, 90% after 5,000 cycles, 80% after 8,000-10,000 cycles. With one cycle per day, this means 20+ years to reach 80% capacity. In our ROI calculations, we use a conservative scenario -- a decrease in efficiency by 1.5-2% per year. Even taking into account the degradation, the payback period does not exceed 4 years for all the above cases.

Is it possible to get financing or leasing for BESS in Ukraine?

Yes, there are several financing mechanisms: 1) EBRD and IFC programs for energy efficiency - loans at 5-8% per annum with a grace period. 2) USAID Energy Security Project - grant coverage of up to 30% of the cost of equipment for critical infrastructure. 3) Leasing from Ukrainian banks (OTP, Ukrgazbank) - from 14% per annum in hryvnia. 4) ESCO (Energy Service Company) model -- BESS is installed at the expense of the ESCO company, and the company pays from the saved funds. 5) PPA (Power Purchase Agreement) -- fixed price per kWh for 10+ years. We will help you choose the optimal financing scheme for your project.

What is the minimum enterprise size for BESS to be feasible?

Economically justified implementation of BESS starts from a consumption of 50-100 kW of peak power and an electricity bill of ₴50,000/month. For smaller facilities, we recommend our Retail BESS line (30-50 kW). Factory BESS solutions are optimal for medium enterprises (100-500 kW). For large productions (500 kW - 5 MW) - container solutions. The Payback Period directly depends on the load profile and tariff structure. We analyze your electricity bills and load schedules for free to assess potential.