Benefits of Utilizing Drone Thermal Imaging on Commercial Solar Sites

Thermal Imaging is a common testing and maintenance practice to ensure the efficiency and safety of solar systems. In recent years, the popularity of aerial thermography, performed by drones, has grown due to the increased accuracy, efficiency, and safety of using drones to perform thermal imaging. These specialized drones, equipped with infrared thermal cameras and complex mapping tools, can quickly and effectively detect temperature variations on commercial solar sites that are not visible to the naked eye. This easier and more effective method of identifying temperature anomalies on a larger solar site, means technicians can more quickly address issues in the field, such as overheating components, faulty modules, or poor electrical connections that could lead to loss of production or safety concerns in the future.

Our pilot performed a thermal inspection at this 17 MW site in Maryland

In this article, we will discuss the 5 main reasons our team at Day Electric has begun utilizing Ariel Drone Thermography on the majority of our sites we service and commission.

5 Benefits of Utilizing Drones for Thermal Imaging

1. Increased Efficiency on Large Solar Projects

Although handheld thermal imaging is still an important aspect of solar maintenance and testing, for detecting hot spots on modules, it is much more effective to utilize drone technology on larger sites. Whether a site is 500 kW or 100 MW, drone thermal inspections can usually be completed in under 1 hour, and take only one licensed pilot to perform. Performing handheld thermal imaging would take significantly more time, thus increasing labor costs. Drone Thermography is a much more effective route in detecting production and safety issues on larger sites.

2. Early Detection

When drone thermal inspections can be done more effectively and more often, this prevents cascading failures and more costly or damaging repairs down the road. Early detection of hot spots can increase site performance and improve the production and longevity of a solar system.

Since Drone thermal imaging is essential for early detection of site safety and production issues, it is an essential step in our commissioning process. For sites already in operation, we recommend a thermal drone inspection at least once a year at a minimum.

3. Safety of Personnel

Performing a drone thermal inspection decreases risks tremendously for on-site personnel. As mentioned, a drone thermal inspection can be completed by one pilot in a short period, on the ground without getting near equipment or unforeseen hazards in the field. Pilots do not need to be on roofs or carports, but can remain safely on the ground with limited access to the site. Drone technology can improve safety measures, while still providing detailed thermal reporting.

4. Accuracy of Technology

Drone thermal technology, especially when paired with a skilled pilot, and comprehensive reporting software, can create much-needed and improved accuracy of thermal scanning of commercial solar sites.

Before a thermal drone inspection is performed, a detailed flight plan is created. Therefore, once on site, the drone’s flight path is already programmed to ensure the accuracy of coverage for the entire site.

5. Data Analysis and Reporting

After the drone is complete with the aerial scan, all data is then analyzed and compiled into a detailed thermal report. The thermal camera will pinpoint exact location of hot spots and points of potential production lost. Depending on the drone and reporting software used by your contractor, the accuracy and details in the report may vary. We recommend before a thermal drone inspection is performed of your site, you discuss deliverables with your drone service provider.  At Day Electric, we always emphasize not only the quality of workmanship and service, but also the deliverables and reporting aspects.

The accuracy, efficiency, and overall benefits of drone thermal inspections are undeniable. Day Electric is a firm believer in drone inspections, and that is why we have equipped each of our crews with a drone with thermal capabilities and have multiple UAS-licensed drone pilots.

The Day Electric Difference

One aspect that makes Day Electric’s drone inspections unique is that they are performed by our in-house electricians, who have multiple years’ experience in commercial and utility solar. Thus, our pilots cannot only safely and accurately perform a drone inspection but also analyze the thermal report and create recommended actions and repairs based on the findings. We believe this is the benefit of working with Day Electric, as we always try to streamline our testing and repair services to better serve our customers.

For thermal drone inspection services on your next project under construction or in operation, reach out to Day Electric at info@dayelectricusa.com.