ON.energy and Crusoe partner on UPS technology for US data centres, Skeleton Tech in 800 VDC partnership with DG Matrix
System integrator and project developer ON.energy and AI data centre infrastructure developer Crusoe have partnered to deploy 5GW of uninterruptible power supply (UPS) technology across multiple US hyperscale campuses. Announced 21 July, ON.energy will deploy its AI UPS technology. Commissioning is expected to commence this year and extend into 2027. AI data centres introduce unprecedented challenges to the grid. During training operations, thousands of GPUs ramp up and down in coordinated bursts, generating significant power demand fluctuations. From the grid’s perspective, a large AI training facility produces load patterns distinct from traditional facilities, alternating between high and low power consumption with variability occurring hundreds to thousands of times daily. Without proper management, these fluctuations can travel back through the interconnection point into the transmission system, straining grid equipment and constraining operators’ ability to manage other system-wide variables. ON.energy’s AI UPS is a patented medium-voltage UPS positioned inline between power sources and AI data centres. By isolating the facility from the grid, the system maintains operation through voltage faults—protecting data centre equipment without disconnecting—while simultaneously preventing internal GPU load variations from impacting the grid. The AI UPS has been validated against the Electric Reliability Council of Texas’ (ERCOT’s) Large Load Interconnection requirements, satisfying the grid stability and voltage ride-through standards that ERCOT has established as the baseline for responsible large-load interconnection in Texas, including compliance with Nodal Operating Guide Revision Requests (NOGRR) 282 and ERCOT’s Low Voltage Ride-Through (LVRT) protocols. The AI UPS stores sufficient energy to power an entire campus for extended periods, substantially reducing grid variability during peak hours. ON.energy claims the outcome is a data centre that actively supports grid stability. Technology news magazine IEEE Spectrum explained that ON.energy’s 3.5MW units include a power conversion system (PCS), energy storage batteries, a second power conversion system (PCS), and a transformer. The batteries provide up to eight hours of backup power. ON.energy sources equipment from established manufacturers and adds proprietary software and controls. The bidirectional PCS converts AC from the grid to DC for storage, then back to AC for data centre loads. In reverse, it absorbs and smooths load swings that would otherwise disrupt the grid. The system is installed outside the data centre, freeing interior space for compute resources and enabling medium-voltage operation. Traditional UPS systems operate inside at low voltages for safety. In February, ON.energy and electrical infrastructure company Shoals Technologies Group agreed to pair ON’s AI UPS with Shoals’ DC Recombiner. The Recombiner consolidates inputs from solar arrays, BESS, and other DC microgrid sources. It enables charging the BESS using renewable energy and discharging it to supply power to the grid through an inverter. In late 2025, ON announced a 5GW transformer supply agreement with manufacturer Prolec GE for data centre and renewable infrastructure in the US.
:quality(70))
System integrator and project developer ON.energy and AI data centre infrastructure developer Crusoe have partnered to deploy 5GW of uninterruptible power supply (UPS) technology across multiple US hyperscale campuses. Announced 21 July, ON.energy will deploy its AI UPS technology. Commissioning is expected to commence this year and extend into 2027. AI data centres introduce unprecedented challenges to the grid. During training operations, thousands of GPUs ramp up and down in coordinated bursts, generating significant power demand fluctuations. From the grid’s perspective, a large AI training facility produces load patterns distinct from traditional facilities, alternating between high and low power consumption with variability occurring hundreds to thousands of times daily. Without proper management, these fluctuations can travel back through the interconnection point into the transmission system, straining grid equipment and constraining operators’ ability to manage other system-wide variables. ON.energy’s AI UPS is a patented medium-voltage UPS positioned inline between power sources and AI data centres. By isolating the facility from the grid, the system maintains operation through voltage faults—protecting data centre equipment without disconnecting—while simultaneously preventing internal GPU load variations from impacting the grid. The AI UPS has been validated against the Electric Reliability Council of Texas’ (ERCOT’s) Large Load Interconnection requirements, satisfying the grid stability and voltage ride-through standards that ERCOT has established as the baseline for responsible large-load interconnection in Texas, including compliance with Nodal Operating Guide Revision Requests (NOGRR) 282 and ERCOT’s Low Voltage Ride-Through (LVRT) protocols. The AI UPS stores sufficient energy to power an entire campus for extended periods, substantially reducing grid variability during peak hours. ON.energy claims the outcome is a data centre that actively supports grid stability. Technology news magazine IEEE Spectrum explained that ON.energy’s 3.5MW units include a power conversion system (PCS), energy storage batteries, a second power conversion system (PCS), and a transformer. The batteries provide up to eight hours of backup power. ON.energy sources equipment from established manufacturers and adds proprietary software and controls. The bidirectional PCS converts AC from the grid to DC for storage, then back to AC for data centre loads. In reverse, it absorbs and smooths load swings that would otherwise disrupt the grid. The system is installed outside the data centre, freeing interior space for compute resources and enabling medium-voltage operation. Traditional UPS systems operate inside at low voltages for safety. In February, ON.energy and electrical infrastructure company Shoals Technologies Group agreed to pair ON’s AI UPS with Shoals’ DC Recombiner. The Recombiner consolidates inputs from solar arrays, BESS, and other DC microgrid sources. It enables charging the BESS using renewable energy and discharging it to supply power to the grid through an inverter. In late 2025, ON announced a 5GW transformer supply agreement with manufacturer Prolec GE for data centre and renewable infrastructure in the US.
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