TECHNICAL INSIGHTS 11/03/2025

UPS: When Does It Need Reassessment, Upgrade or Replacement?

The age of a UPS is useful information, but it is not, by itself, a criterion for replacement. A system may have been in operation for several years and still meet the requirements of the load. Conversely, a newer system may require reassessment if the installation has changed significantly.

When reassessment is needed

New equipment, expansions or changes in the operation of a facility can alter the load the UPS is required to support. The required autonomy may also have changed, while recurring alarms, frequent transfers or deviations in measurements are indications that require a broader assessment.

Actual environmental conditions are also important: temperature, ventilation and dust affect the ageing of batteries and electronic components.

When an upgrade makes sense

If the basic system architecture remains suitable for the installation, replacing individual components – such as batteries, fans, capacitors or electronic subsystems – can significantly extend the operational life of the UPS.

In some cases, a more extensive modernisation may also be feasible without replacing the entire installation.

UPS system
UPS maintenance and upgrade

When replacement becomes the more reasonable option

Replacement should be considered when current power, autonomy or redundancy requirements are no longer met, when different scalability or monitoring capabilities are required, when technical support and spare parts are becoming limited, or when the overall condition of the power electronics increases operational risk.

Energy efficiency and losses should also be taken into account, but not in isolation from investment cost and the actual criticality of the load.

The value of such a reassessment is that the decision is no longer based solely on the age of the equipment. It is based on the actual condition, current requirements, and the total cost and risk of each option.

This helps avoid both premature and unnecessary replacement and the prolonged operation of a system that no longer supports the installation reliably.

Case Studies & Insights

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What Should Be Checked Before a Critical Power System Is Handed Over?
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What Should Be Checked Before a Critical Power System Is Handed Over?

Completing the installation of a UPS is not the same as completing the project. Before the system enters normal operation, it must be confirmed that it has been installed correctly, that its operating parameters correspond to the design and that its basic protection functions have been tested. This is the essence of commissioning: putting the system into operation and verifying its behaviour against the project requirements.
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UPS and Energy Storage: Where They Converge – and Where They Do Not
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UPS and Energy Storage: Where They Converge – and Where They Do Not

The growing adoption of energy storage systems often creates the impression that a BESS and a UPS are variations of the same technology. They do indeed share certain elements — batteries, power electronics, converters and control systems. The fundamental difference, however, lies in the function for which each system is designed.
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Emergency Lighting: It Must Work at the Critical Moment
TECHNICAL INSIGHTS
15/10/2026

Emergency Lighting: It Must Work at the Critical Moment

Emergency lighting is part of the infrastructure that is activated when the normal power supply is unavailable. Its purpose is not to replace normal lighting, but to support safe evacuation, the identification of exits and signs and, depending on the application, the safe completion of critical activities.
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Press Releases

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28/9/2026

Partnership with ION

Partnership with ION
ACE Power Electronics has successfully completed the supply and technical installation of Riello UPS uninterruptible power supply systems at ION’s new wafer production plant in Arta, ensuring continuous and uninterrupted operation of the production process. More specifically, as part of the project, ACE Power Electronics installed UPS systems with a total capacity of 220 kVA, delivering high performance, increased reliability and maximum availability even under demanding industrial operating conditions. The equipment incorporates On Line double-conversion technology, energy efficiency of up to 96.5%, high overload capability, zero impact on the grid, advanced communication capabilities and easy monitoring through modern displays and status indicators. As Dimitris Vlachos, General Manager of ACE, stated: “The completion of this project at ION’s new factory highlights ACE Power Electronics’ expertise and reliability in critical industrial installations. We are proud to have been providing uninterruptible power solutions for 35 years, helping ensure uninterrupted production and operational security for our industrial customers.”
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29/9/2026

Partnership with ATHINAION Cinemas

Partnership with ATHINAION Cinemas
ACE Power Electronics has successfully completed the supply and installation of a Riello Sentryum Active 20 kVA uninterruptible power supply (UPS) system at ATHINAION Cinemas, strengthening the reliability and availability of the facilities’ critical electrical and technological infrastructure. In a modern cinema environment, the continuous operation of projection systems, network infrastructure, automation systems and other supporting applications is a fundamental requirement for uninterrupted customer service and the smooth running of screenings. Protection against interruptions or fluctuations in the electrical power supply is critical to ensuring the operational continuity of the facilities. The installed solution is based on the Riello Sentryum Active 20 kVA (S3T 20 ACT), an advanced online double-conversion UPS designed for applications requiring high power quality, maximum reliability and increased energy efficiency. The system ensures stable and uninterrupted power supply, protecting sensitive equipment from outages, voltage sags and electrical disturbances. ACE Power Electronics was responsible for the supply, technical installation support and commissioning of the system, ensuring its smooth integration into the cinemas’ existing infrastructure. As Dimitris Vlachos, General Manager of ACE Power Electronics, stated: “The uninterrupted operation of critical systems is a key factor in delivering high-quality services and ensuring the best possible visitor experience. Through our partnership with ATHINAION Cinemas, we contribute to strengthening the reliability of their infrastructure by providing a modern power protection solution that meets the requirements of their day-to-day operations.”
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29/9/2026

Award at the 2nd ICAP CRIF ESG Summit

Award at the 2nd ICAP CRIF ESG Summit
ACE Power Electronics received an award at the 2nd ESG Summit organised by ICAP CRIF, one of the significant events focusing on sustainable development and the integration of ESG principles into corporate strategy. More specifically, the award follows the company’s recent achievement of receiving an “A – High” ESG rating from ICAP CRIF under the Synesgy methodology. The assessment confirms the company’s consistent commitment to Environmental, Social & Governance (ESG) principles and reflects its overall strategy for sustainable growth, transparency and responsible operations, as well as its continuous investment in policies and systems that strengthen corporate governance and long-term value. ACE Power Electronics was represented at the 2nd ESG Summit by Christos Raftopoulos, Member of the company’s Board of Directors, and Dimitris Vlachos, General Manager. The award was accepted on behalf of ACE by Christos Raftopoulos, who stated: “ACE Power Electronics’ participation and recognition at the ESG Summit further strengthen its position as a reliable partner in the field of dependable energy solutions and as an organisation that meaningfully integrates sustainability principles into its operations and strategy.”
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