Tired of Constant Site Visits for Solar Panel Inspections? Cloud Sharing Links Field and Office

Are you constantly traveling to sites for solar panel inspections, enduring long commutes and hectic days? In addition to on-site inspection tasks, are you swamped with report writing after returning to the office, so that the days pass in a blur…? Many O&M managers, maintenance technicians, and chief electrical engineers may have had such experiences.

At power plants where countless solar panels stretch across vast grounds, on-site visits for routine inspections and fault responses are indispensable. However, due to labor shortages and increasing workloads, it is not uncommon for a single person to manage multiple plants. As a result, you may find yourself traveling long distances almost every week—“Plant A today, Plant B tomorrow”—and valuable time and energy are consumed just by moving between sites. While traveling you cannot advance other tasks, and the information collected on-site cannot be shared until you bring it back to the office, which may cause responses to lag behind.

Furthermore, compiling reports based on photos and notes taken on-site is also a major burden. Analog methods such as recording on paper inspection checklists and organizing and pasting photos taken with a digital camera tend to take a lot of time. You may hear complaints like “It’s a hassle to write down each photo’s timestamp and location” or “I keep working overtime to prepare reports after returning to the office.” Spending so much time on report preparation can leave insufficient time for essential tasks like fault analysis and countermeasure planning—a counterproductive situation.

What is needed to reduce the burden of solar panel inspection work and strengthen the “link” between the field and the office? One answer is to leverage on-site DX (digital transformation). This article introduces a new cloud-shared inspection style using a smartphone and LRTK. By using digital technology to smooth information sharing between field and office, let’s explore hints to break free from the cycle of constant business trips.

Traditional Solar Panel Inspection Workflows and Their Issues

Routine inspections and fault responses for solar panels have mainly been performed manually and driven on-site. Let’s look at a typical traditional workflow.

• Travel to site and preparation: The inspector drives to the plant and, upon arrival, begins preparations with paper inspection lists and drawings in hand. They must familiarize themselves with items and locations to be inspected, referencing prepared equipment lists and past inspection records.

• On-site inspection execution: Perform visual checks of panels, verify power generation, and check for loose connections or damaged cables. If a fault is found, take notes on the spot and photograph with a digital camera or smartphone. At large sites, you need to note the panel number or location for each photo in a notebook so you don’t forget where it was taken. If electrical measurements (insulation resistance, IV curve measurements, etc.) are performed with instruments, results are recorded on paper.

• Report preparation at the office: After finishing the on-site inspection, the inspector returns to the office. This is where report creation begins. They reread scribbles in their notebook and inspection sheets and compile a report on a PC. Photos are imported to the PC, organized by fault location, and pasted into the report. Explanatory text is entered for each photo, and lists of findings and proposed future countermeasures are written up.

• Report submission and sharing: The completed report is emailed to supervisors and stakeholders or uploaded to cloud storage for sharing. In some cases, it is printed and filed. This completes the inspection cycle, but when handling multiple sites, this process must be repeated for each site.

Several issues are associated with the conventional approach described above. First is the problem of time lag in information sharing. Even if a fault is found on-site, the office cannot grasp detailed conditions until the inspector returns and completes the report. Even in cases requiring urgent response, it is difficult to share information with specialist departments on the spot.

Second is inefficiency and the risk of human error. Mistakes tend to occur in manual processes, such as misreading handwritten notes or failing to correctly link photos and notes. If photos are forgotten or notes omitted, reports will have gaps, and a return trip to the site may be necessary. At large plants, situations where “we can’t remember which panel it was” can also occur.

Third is the difficulty of avoiding dependence on individuals and of standardization. Inspection methods and report formats often vary by inspector, causing inconsistent quality within the company. If know-how is only stored in the heads of veteran staff and not shared with others, organizational response capability is limited. When each site’s data is managed as paper or separate files, it takes effort to find needed information later, and trend analysis or comparisons across sites are not easy.

Thus, traditional solar panel inspection work harbors issues such as “takes time,” “risk of mistakes,” and “inability to fully utilize information.” To resolve these problems and achieve efficient, reliable inspections, a new approach using digital technologies is required.

Evolving Solar Panel Inspections with Smartphone + LRTK: Geotagged Records, Point Clouds, and AR

One solution that can overhaul analog-centered inspection workflows is the combination of a smartphone and LRTK. LRTK is a field DX platform consisting of a small dedicated GNSS receiver that attaches to a smartphone, and the companion app and cloud service. With this, positioning, recording, and verification tasks required on-site can be completed with a single smartphone. Leveraging high-precision GPS (RTK-GNSS), LiDAR sensors, and camera functions built into modern smartphones, the platform strongly supports the entire process from site survey and fault recording to progress verification. Let’s look at the main features and use cases.

• High-precision positioning and coordinate recording: A smartphone fitted with an LRTK device quickly becomes a surveying instrument capable of centimeter-level (half-inch-level) high-precision positioning. With the press of a button you can record the current latitude, longitude, and altitude, allowing anyone to perform positioning work that used to require specialized equipment. If you find a location of interest during inspection, you can immediately obtain and save its exact coordinates. Even at vast mega-solar sites, you won’t have to worry later about “not being able to pinpoint the problem location.” The collected coordinate data is automatically plotted on a digital map, eliminating the need to manually mark up drawings.

• Digital photo records and automatic organization: When you photograph a fault with the smartphone camera, the shooting date/time and location coordinates are automatically attached to the photo data. By entering simple notes or categories using templates provided in the LRTK app, you can create standardized records that link photos and comments on the spot. This removes the need for paper notes and prevents omissions in on-site records. Recorded photos are organized in chronological order on maps and list screens, making past inspection histories immediately accessible. Repeated photos taken at the same location can be compared along a timeline, allowing you to understand pre/post-repair changes or the progression of degradation at a glance.

• Easy 3D point cloud scanning: Using a LiDAR-equipped smartphone, you can also record the surroundings as 3D point cloud data. Simply walk across the site to scan and obtain the terrain and equipment shapes as a collection of countless points. Because LRTK combines this with high-precision positioning, the acquired point clouds are assigned absolute coordinates, so you can clearly identify their real-world locations when viewing them later on a PC. In inspections, for example, scanning an entire row of panels enables detailed analysis afterward of panel tilt and mounting-frame deformation. Recording the site’s terrain changes and large equipment layout as a whole makes it possible to quantitatively grasp “how things have changed compared to before” when an anomaly occurs.

• Intuitive field verification with AR: Augmented reality (AR) is another notable feature unique to LRTK. You can overlay design drawings and existing map information onto the live field view on the smartphone screen. For example, by displaying the plant layout in AR and overlaying it on the actual scene, you can intuitively confirm “which panel should be installed at this location” and “which point on the drawing corresponds to this spot.” Without markers or tape measures, you can verify design positions against on-site conditions just by looking through the smartphone, helping detect panel or frame installation shifts. You can also display coordinates of previously recorded fault locations in AR and be guided to them. For example, when you approach a panel marked as needing attention in the previous inspection, a pin appears on the smartphone screen so you won’t overlook it. Thanks to LRTK’s high-precision positioning, you need not worry about AR overlays being misaligned with real-world positions. This helps even non-experts share spatial images easily and greatly aids team alignment on field conditions.

As described, smartphone + LRTK enables smart inspections that fully utilize positional information and digital technologies. Data collected on-site is stored directly as digital information, eliminating the redundant task of transcribing paper records into a PC later. Because each person can operate the system using a familiar smartphone, the introduction barrier is low and it is easier for the whole team to adopt a unified method. Next, let’s look at the effects generated by sharing this field data in the cloud.

How Cloud Sharing Revolutionizes Field-Office Collaboration

Synchronizing field-collected data to the cloud makes managing solar power plants even more efficient. LRTK connects the field smartphone app and cloud service, directly linking field and office with data. Here are the main benefits of cloud sharing.

• Real-time sharing and team coordination: Positioning data, photos, point clouds, and more captured with LRTK are automatically uploaded to the cloud as they are recorded. Colleagues and supervisors in the office can immediately view that data from a browser. For example, when a field inspector photographs a fault location, the office can see the photo almost in real time on a PC. Even while the inspector is walking around a vast site, the office can grasp the situation via the cloud and send appropriate instructions or advice to the field. If an inspector is unsure about a point on-site, a veteran technician viewing the cloud data can immediately comment, enabling on-the-spot team collaboration. This eliminates information-sharing time lags and enables rapid responses with field and remote teams acting as one.

• Automated report generation: Introducing on-site DX can greatly simplify tedious reporting tasks. Tasks that were previously manual, such as organizing photos and creating tables and text, are automated in the cloud. The LRTK cloud provides report templates and output functions to summarize inspection results, so simply fitting the collected field data into the template completes the required report. It is possible to generate a PDF inspection report with one click from a set of photos and input notes. This greatly reduces time spent on report creation, allowing inspectors to devote more time to higher-value work (fault analysis, countermeasure planning, etc.). Digitized records also help prevent misentries and information omissions. Because the latest data is shared between field and office at all times, mistakes like “referring to an outdated drawing” or “responding late because the latest inspection results were unknown” can be avoided.

• Enabling remote attendance: When site conditions are clearly viewable via the cloud, there are cases where one can fulfill the role of being present without physically attending—this is the idea of “remote attendance.” For example, when an important inspection is being conducted at a site and a chief electrical engineer would normally need to go there in person, the engineer can instead review detailed data collected by on-site staff with LRTK and shared via the cloud from the office. Combined with video calls when necessary, this can achieve essentially the same effect as being physically present. This reduces travel time and costs and allows efficient personnel allocation, enabling busy engineers to remotely manage multiple sites flexibly.

• Centralized multi-site management: Aggregating data on a cloud platform allows centralized management of multiple distant plants. You can view inspection histories, number of faults, and progress status of each site on a single screen, enabling timely oversight of all sites your company manages. Since past data is also accumulated, cross-site analysis such as “what types of faults were common last year” or “whether similar phenomena are occurring at other sites” becomes easy. Even if different personnel are assigned to each site, data shared on the cloud prevents handover omissions and dependence on individuals, enabling organizational knowledge accumulation. Additionally, remote plant owners and stakeholders can access site progress data over the internet at any time, eliminating the need to prepare large amounts of paper materials for each reporting meeting. With the latest information always shared, decision-making speeds up. Centralized management of all sites as digital data makes it easier to run a management-level PDCA cycle and will raise the overall level of O&M operations.

The LRTK mechanism, based on cloud sharing, removes the boundaries between field and office and enables collaboration that transcends time and distance. For field inspectors it provides the reassurance of “always having support available” and reduces the burden of reporting, while for managers it offers “comprehensive oversight” and “faster data-driven decision making.” Finally, let’s summarize the wider implications LRTK use brings to solar power plant inspections.

Conclusion: Change the “constant travel” workstyle with on-site DX

Promoting DX in solar panel inspection not only improves efficiency but also directly transforms how people work. Digital inspections using smartphone + LRTK can greatly reduce the burdens that used to be taken for granted—frequent site travel and late-night report writing. With real-time connections between field and office, a system where “the right people can support immediately when needed” is established, so inspectors don’t have to struggle alone. Freed from paper forms, they can focus more on strategic maintenance planning and optimizing plant performance.

Moreover, LRTK’s utility extends beyond inspections. The ability to perform centimeter-level (half-inch-level) positioning and 3D measurement easily means LRTK is also very useful as a simple surveying tool. For example, it is powerful for tasks such as measuring panel frame layouts, confirming site boundaries, and understanding terrain shapes. Processes that previously required specialized survey contractors can now be accomplished on-site with a smartphone, allowing immediate data acquisition from planning through construction to maintenance. Small terrain changes within the plant or elevation differences at proposed expansion sites can be measured quickly without deploying heavy equipment or drones.

Additionally, the detailed field data accumulated in the cloud will be useful for future troubleshooting and equipment renewal planning. The “digital assets” obtained through DX will become valuable materials for passing on expertise to the next generation and for managerial decision-making.

Amid labor shortages and declining numbers of veteran technicians, transitioning to smart O&M with digital technologies has become an inevitable trend. LRTK, as a partner in on-site DX, will offer everyone involved in solar power plant maintenance and management an environment to work “easier and smarter.” Step beyond the previous way of constant business trips and adopt a new cloud-connected inspection style. Smooth collaboration across field and office will surely contribute to improved plant safety and uptime.