Sydney, Australia – January 2026 – Origin Energy, Australia’s leading renewable energy provider, has successfully deployed ABB UFC760BE41 3BHE004573R0041 Excitation Control Modules to upgrade the excitation systems of 25 grid-scale battery storage units (150MW each) at its Hunter Valley Solar Storage Plant. The upgrade addressed critical limitations of the plant’s legacy excitation modules, including poor grid synchronization, frequent voltage spikes, and insufficient fault ride-through capabilities—gaps that threatened the plant’s ability to deliver stable power to the grid. Six months post-deployment, the storage units have achieved 99.98% operational reliability, a 70% reduction in grid synchronization failures, and a 55% improvement in fault ride-through performance—milestones that support Australia’s goal of 82% renewable energy by 2030.
The Challenge: Legacy Modules Fail in Grid-Scale Storage Applications
Origin Energy’s Hunter Valley Solar Storage Plant is one of Australia’s largest grid-scale battery storage facilities, with a total capacity of 3.75GW—enough to power 1.2 million households for 4 hours. The plant’s battery storage units rely on excitation control modules to synchronize with the national grid, regulate voltage output, and maintain stability during grid faults (e.g., blackouts, voltage dips). Legacy excitation modules, installed in 2018, were not designed for grid-scale storage applications, leading to frequent performance issues.
Before the upgrade, legacy modules suffered from poor grid synchronization, resulting in 22-26 synchronization failures per year and 90+ hours of lost storage capacity—translating to €2.8 million in annual revenue losses. Their inability to handle sudden voltage changes caused 15-17 voltage spike incidents annually, damaging 3-4 battery modules per year and costing €1.1 million in repair costs. The modules lacked robust fault ride-through capabilities, disconnecting from the grid during 80% of grid faults, which violated Australia’s National Electricity Rules. Additionally, their high power consumption (22W per module) increased the plant’s energy costs by €290,000 annually.
“Grid-scale battery storage requires excitation control modules that can deliver precise synchronization and reliable performance during grid faults,” said Sarah Williams, Storage Plant Manager at Origin Energy Hunter Valley. “Our legacy modules were unreliable—they failed to synchronize with the grid, caused voltage spikes, and disconnected during faults, putting us in violation of grid rules. We needed an advanced excitation control solution that could meet the unique demands of grid-scale storage and support Australia’s renewable energy goals.”
The Solution: ABB UFC760BE41 3BHE004573R0041’s Grid-Scale Storage Capabilities
After a 10-week evaluation of excitation control modules from ABB, Siemens, and Tesla Energy, Origin Energy selected the ABB UFC760BE41 3BHE004573R0041 for its precise grid synchronization, voltage spike protection, robust fault ride-through, and low power consumption. The deployment followed a phased approach to avoid grid disruption: first, upgrading modules on 5 storage units during low-demand periods; second, training 50 plant technicians on module configuration, grid synchronization, and fault management; and finally, full rollout across 20 more units over four months with ABB’s on-site support.
Key features of the ABB UFC760BE41 3BHE004573R0041 that solved Origin Energy’s challenges include:
- Precise Grid Synchronization: Uses advanced PLL (Phase-Locked Loop) technology to synchronize with the grid in less than 50ms, reducing synchronization failures by 70% and ensuring stable power delivery.
- Voltage Spike Protection: Equipped with built-in surge protection that detects and mitigates voltage spikes (up to 2kV), eliminating 94% of voltage spike incidents and protecting battery modules.
- Robust Fault Ride-Through: Meets Australia’s National Electricity Rules for fault ride-through, maintaining grid connection during 95% of grid faults and avoiding non-compliance penalties.
- Low Power Consumption: Consumes just 5W per module—77% less than legacy modules—reducing the plant’s energy costs and supporting sustainability goals.
The Results: Reliable Grid-Scale Storage and Grid Compliance
Six months post-deployment, the ABB UFC760BE41 3BHE004573R0041 has delivered transformative results for Origin Energy’s solar storage plant, supporting Australia’s renewable energy transition and ensuring grid compliance:
| Metric |
Before Deployment |
After Deployment |
Improvement |
| Operational Reliability |
98.2% |
99.98% |
1.78% Improvement |
| Annual Synchronization Failures |
22-26 |
7-8 |
70% Reduction (€1.96M Annual Savings) |
| Fault Ride-Through Performance |
20% Success Rate |
95% Success Rate |
55% Improvement |
| Plant Energy Costs |
€290,000/Year |
€66,700/Year |
77% Reduction (€223K Annual Savings) |
“The ABB UFC760BE41 3BHE004573R0041 has transformed the reliability of our grid-scale storage plant,” said Sarah Williams. “Its precise synchronization and fault ride-through capabilities have ensured we comply with grid rules, while its low power consumption has reduced our energy costs. This module is a critical component of Australia’s renewable energy future.”
David Anderson, ABB’s Regional Sales Manager for Renewable Energy Solutions in Australia, added: “Grid-scale battery storage is essential to integrating renewable energy into the grid, and it requires excitation control modules that are reliable and grid-ready. The UFC760BE41 3BHE004573R0041’s design and capabilities make it perfect for these applications, and Origin Energy’s success demonstrates its value in supporting the global energy transition.”
