Unlocking Solar Potential: Key Insights on Utility-scale PV Performance Drivers and Factors Influencing Performance Degradation
January 22, 2025 – Erudite Reliability Services OPC hosted their 1st webinar for the year 2025 in collaboration with Ir. Ts. Rafiq Khan, C. Eng. of Volta Forensic on Utility-scale Solar PV Systems: Understanding Performance Drivers and Factors Influencing Performance Degradation. Industry professionals, engineers, and solar energy enthusiasts joined the insightful webinar which explored the challenges and solutions in optimizing solar power generation efficiency, mitigating degradation, and minimizing performance losses over time.
During the 90-minute session, Rafiq provided valuable insights into the lifecycle of solar PV systems, common degradation factors, and strategies for long-term performance optimization. The discussion highlighted the critical need for proactive maintenance and condition assessments to maximize the operational lifespan of solar plants.
Key Takeaways from the Webinar
1. The Lifecycle of Utility-scale Solar PV Systems
Rafiq emphasized that the performance of solar PV systems is determined long before installation, with factors like equipment quality, testing, and commissioning playing a crucial role in long-term efficiency. The webinar outlined key lifecycle phases, including:
- Commissioning and site acceptance testing
- Initial performance assessments and defect liability periods
- Ongoing maintenance, monitoring, and upgrades
- Regulatory compliance and end-of-life planning
A significant takeaway was that solar plants can often operate beyond their initial 21 to 25- year Power Purchase Agreement (PPA) if proper asset management strategies are in place.
2. Understanding Performance Degradation
Rafiq discussed the various environmental and operational factors that lead to performance degradation, such as:
- Weather conditions – high temperatures, humidity, and dust accumulation
- Material fatigue – aging of panels, inverters, and connectors
- Manufacturing inconsistencies – variations in product quality affecting long-term efficiency
Without routine condition assessments, plant owners risk energy yield losses, increased operational costs, and potential financial setbacks.
3. The Financial Impact of Performance Loss
A standout moment in the webinar was Rafiq’s breakdown of the cost implications of even minor efficiency losses. He illustrated how a 1% performance loss per year on a 50 MW plant can translate into millions in lost revenue over the system’s lifespan.
With solar energy becoming highly competitive, the tendency to underfund operations and maintenance (O&M) budgets has become a growing concern. Rafiq stressed that strategic budget allocation for preventive maintenance can prevent costly repairs and ensure continued profitability.
4. Maximizing Solar Plant Lifespan and Performance
Beyond basic maintenance, Rafiq outlined proactive strategies that solar plant owners can implement to sustain performance:
- Regular condition assessments and performance audits
- Component replacements and system upgrades
- Exploring contract extensions beyond the initial PPA period
By taking a long-term asset management approach, owners can ensure that their plants remain financially and operationally viable beyond the expected lifespan.
The webinar provided invaluable insights into the complexities of utility-scale solar PV performance. As the renewable energy sector grows, optimizing solar plant efficiency and mitigating degradation risks will be essential for maximizing return on investment and sustainability goals.
WATCH: Utility-scale Solar PV Systems Webinar
Volta Forensic is a specialized firm focused on failure investigations, forensic analysis, and performance assessments in the energy sector. Collaborating with Erudite Reliability Services OPC, Volta Forensic brings its expertise in solar PV condition assessments and forensic investigations, helping clients identify performance degradation, failure causes, and risk mitigation strategies. This partnership enhances asset performance management solutions, ensuring optimized efficiency and reliability for utility-scale solar and other critical energy infrastructures.
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For inquiries of services – assessment, consulting, failure investigation, contact us at [email protected]