As the United States rapidly expands its utility-scale solar capacity, operators are encountering familiar challenges that mirror those faced in Australia's solar market. From fire risks and extreme heat to vegetation growth and equipment reliability, post-construction performance is becoming as crucial as the build itself. This article explores the lessons learned from Australia's solar O&M practices and how they can be applied to the U.S. market.
Managing Fire Risks in High-Heat Environments
Australia's climate, characterized by long periods of dry heat interrupted by sudden heavy rainfalls, poses significant challenges for solar generation. One of the most pressing operational risks is fire. In tropical climates, grass can grow rapidly, creating a consistently high fuel load on-site. Even mowing can be a hazard during hot, windy days.
To combat this, operators are increasingly adopting AI-driven fire and smoke detection systems. These systems monitor entire sites, detecting thermal events early, allowing operations teams to take prompt action and prevent small issues from escalating into major problems. This proactive approach is particularly relevant for southern U.S. sites, where long dry periods and high fuel loads can exacerbate fire risks.
Wildlife Management Without Safety Compromise
Animals and wildlife present operational challenges. Grazing helps maintain low grass levels and reduces fire risk, but it can also lead to animals getting caught in or chewing on exposed cords, creating hazards. Native species like spiders and snakes are additional factors to consider, though solar facilities are thankfully free from tree hazards and drop bears.
Effective cable management systems can be implemented to keep cords out of reach and protect them from grazers. This approach allows operators to manage vegetation health while ensuring site safety and operational continuity. These measures are easily transferable to southern U.S. sites with similar wildlife or grazing programs.
Embracing Condition-Based Maintenance
In the realm of O&M, two primary maintenance types are employed: preventive and corrective. Condition-based maintenance, however, offers a more nuanced approach. It involves monitoring component behavior and intervening before issues require corrective maintenance. This is achieved through advanced analytics, which go beyond on-site troubleshooting.
By collecting site historian data at a granular level, operators can perform root cause analysis, study performance trends, and develop predictive maintenance schedules for high-risk components. This proactive approach has proven successful, allowing interventions weeks before component failures would have triggered forced outages. Strong supply chain management further shortens site downtime by providing more options for long lead-time spare parts.
Remote operations centers or off-site monitoring facilities enable operators to act on subtle equipment insights and make data-driven decisions. As solar projects expand in hot-climate regions, condition-based maintenance and off-site monitoring become essential for early issue detection, effective intervention prioritization, and long-term asset performance protection.
Proactive O&M in Action
A typical workday begins with a thorough site inspection to identify damage, fire hazards, or misaligned trackers. Managers assign preventive maintenance tasks, monitor the SCADA system, and address issues promptly. After construction, operators monitor and manage the facility to prevent problems before they occur, akin to a skilled mechanic maintaining a car's smooth operation.
Translating Experience for Solar Success
Australia's utility-scale solar O&M experience highlights the value of proactive maintenance, robust monitoring, and adaptive approaches to environmental challenges. By adopting these lessons in the U.S., operators can build on existing solar momentum, enhance reliability, and maximize energy production. From fire and wildlife management to condition-based maintenance and off-site monitoring, these practices offer practical insights for efficient, safe, and sustainable U.S. solar projects.
PCL Construction's solar and BESS division in Australia, led by Jack Somers, has extensive experience in large-scale solar and energy storage projects, focusing on performance, reliability, and hot-climate operations. The company welcomes collaboration with U.S. operators to adapt these practices locally and share best practices, ensuring the successful expansion of solar power in the United States.
