Odesa, Ukraine — RENAC, a global provider of solar inverters and energy storage solutions, has commissioned a 375 kW / 783 kWh commercial and industrial (C&I) energy storage system at a large commercial complex in Odesa, one of Ukraine’s most important port cities. Built on the Rena5000 C&I energy storage system with three ESS261 units connected in parallel, the project places backup power at its core and peak–valley arbitrage as a complement, enabling the customer to keep critical operations running even when the grid cannot. The system combines reliable power assurance with intelligent energy management, helping the customer lock in deterministic energy value amid ongoing uncertainty.
Ukraine’s power supply has faced sustained uncertainty, with grid stability frequently challenged by the wider geopolitical situation. For a large commercial complex, the stakes are high: a blackout can stop elevators, fire-protection and security systems in their tracks, directly threatening day-to-day operations and the safety of customers. The question is how to keep critical loads running through grid fluctuations and even full outages. RENAC’s C&I energy storage solution answers it by coupling backup-power assurance with intelligent energy management, so that when grid faults or scheduled outages occur, critical loads keep running without interruption. In Ukraine’s current environment, this capability has become an indispensable line of energy defense for businesses.
RENAC’s tailored solution centers on the Rena5000 C&I energy storage system, which deeply couples storage with the customer’s existing power infrastructure to deliver dual value: power security and energy economics. The system adopts a standardized, integrated design built around the ESS261 and configured with STS and PVS, adapting to a wide range of application scenarios.
· Energy storage: ESS261 × 3 units in parallel
· System scale: 375 kW / 783 kWh
· Backup power: The system stands by in real time. When a grid failure or scheduled outage occurs, the Rena5000 switches to off-grid backup mode within milliseconds (<20 ms), keeping critical loads such as elevators and fire/security systems continuously powered — an uninterrupted safeguard for operations and customer safety.
· Peak–valley arbitrage: Under normal grid conditions, the system charges during off-peak hours and discharges during peak hours, leveraging a peak–valley price spread of about 4.8 UAH/kWh to create additional economic value alongside power security.
Following commissioning, the customer gave high praise to RENAC’s products and services. Evgeniy Kirilishin, the customer’s chief engineer, said the initial commissioning activities gave the technical team the knowledge and hands-on experience required for the successful deployment of the RENAC energy storage system, and thanked the entire RENAC team for its collaboration, professional support and dedication.
More telling is the customer’s growth plan: storage capacity in the commercial zone is set to expand from 3 to 10 units — a strong endorsement of RENAC’s products and services. Looking further ahead, once all units are fully deployed, the distributed storage units will interconnect to form a microgrid across the commercial zone. At that point, the zone will achieve energy self-sufficiency and be able to operate in island mode under extreme conditions, freeing itself from reliance on the external grid. RENAC’s storage solutions are thus evolving from a single-equipment supplier into a core builder of regional energy infrastructure.
The successful commissioning of the Odesa project marks an important milestone in RENAC’s deepening commitment to the Eastern European market. Guided by the principle that “delivery is not the end — service never stops,” RENAC continues to empower global C&I energy storage development with reliable product strength and attentive service, so that every kilowatt-hour of green power creates even greater value.
The energy storage system has a total capacity of 375 kW / 783 kWh, consisting of three ESS261 units connected in parallel. It supports grid-to-off-grid switching in less than 20 milliseconds, helping maintain power continuity during grid interruptions.
The system operates with a peak–valley electricity price spread of approximately 4.8 UAH/kWh and was commissioned in October 2026. Its annual energy storage and discharge volume can reach 250,000 kWh, generating an estimated 1.2 million UAH in annual revenue through electricity price arbitrage.
In terms of environmental benefits, the project is estimated to reduce annual CO₂ emissions by approximately 1,550 tons, equivalent to around 80,000 mature trees. Future expansion plans include increasing the number of energy storage units from three to ten.
The Rena5000 is RENAC’s commercial and industrial energy storage system. In this project it is built around three parallel ESS261 units with an overall capacity of 375 kW / 783 kWh, and is configured with STS and PVS for a standardized, integrated design.
The system stands by in real time. When a grid failure or scheduled outage occurs, the Rena5000 switches to off-grid backup mode in under 20 milliseconds, so critical loads such as elevators and fire/security systems remain powered without interruption.
Beyond backup power, the system runs a peak–valley arbitrage strategy, charging off-peak and discharging at peak across a price spread of about 4.8 UAH/kWh. The project is expected to deliver annual revenue of roughly 1.2 million UAH while reducing CO₂ emissions by about 1,550 tons per year.
Yes. The customer has planned to expand storage capacity from 3 to 10 units. Once fully deployed, the distributed units will interconnect to form a microgrid, enabling the commercial zone to run in island mode and achieve energy self-sufficiency under extreme conditions.
RENAC (Renac Power ) is a global provider of solar inverters and energy storage solutions serving residential, commercial & industrial and utility customers. With an expanding footprint across Europe, Latin America and Southeast Asia, RENAC is committed to making reliable, intelligent energy accessible worldwide.
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