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Why Legacy Inverters Aren’t a Barrier: Overcoming Challenges with Modern Monitoring

  • PowerFly team
  • Apr 24
  • 2 min read

Introduction

When considering your solar monitoring options, partnering with a company that specializes in legacy systems can make a significant difference. This tailored approach to modern monitoring not only addresses the unique challenges posed by legacy inverters but also ensures that your solar system continues to operate efficiently and cost-effectively. Let’s explore how modern monitoring can overcome these challenges and help extend the life of older systems.


Challenges with Legacy Systems

Old and new solar inverters are displayed against a solar panel background under a clear blue sky. Labels read "OLD" and "NEW."

Legacy inverters often present several challenges, including a lack of real-time data, limited performance insights, and difficulty in sourcing spare parts.  According to a 2024 Solar Power World article, repowering legacy systems can be complex due to outdated central inverters, limited warranty support, and the incompatibility of newer inverters with

older systems due to higher power and voltage ratings. These limitations lead to increased operational costs and hindered energy output, ultimately reducing the efficiency of the system. However, modern monitoring tools provide a solution. By offering real-time performance tracking and system optimization, these tools extend the life of legacy inverters and improve overall system efficiency.


How Modern Monitoring Helps

Integrating modern monitoring tools, such as cloud-based platforms and real-time data sensors, with legacy inverters enables real-time data collection and diagnostics, which leads to better tracking of energy production and faster identification of issues for system optimization.   NREL's 2024 report highlights the challenges surrounding the reliability of PV inverters, noting that their relatively short lifespans and frequent failures contribute to system downtime. The report emphasizes the growing importance of data analytics in understanding inverter performance and reliability, which will be key to addressing these challenges moving forward  (NREL 2024 Report, Executive Summary, pp. v).


Why It Works with Legacy Inverters

Even with older inverters, modern monitoring offers clear advantages.  By integrating real-time performance tracking with environmental data, operators can spot emerging issues early, addressing them before they result in costly downtime. As emphasized by the Federal Energy Management Program (FEMP), continuous monitoring is essential for ensuring the reliability and longevity of legacy systems.


Conclusion

Laptop on wooden desk showing graphs titled "POWERFLY." Nearby are a plant, phone, and notes.

To maximize the performance of legacy solar systems, integrating modern monitoring tools is key to overcoming the challenges posed by older inverters. By leveraging real-time data and performance analytics, operators can extend the life of their systems, reduce maintenance costs, and ensure continued efficiency.

If you're interested in exploring how modern monitoring can improve your solar system's performance, we're here to provide insights and help guide you through the best solutions for your specific needs. Reach out to us to learn more about how we can support your system’s ongoing optimization.


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