Utility-scale solar arrays degrade silently. Hot spots reduce string-level performance. Vegetation encroaches on panel rows. Bypass diode failures go undetected for months. We provide the aerial data your O&M team needs to catch these issues before they compound into lost revenue and voided warranties.
Get a Quote →Comprehensive visual inspection of every panel row using overlapping flight lines matched to your array geometry. We document physical damage, frame corrosion, junction box anomalies, and glass delamination. Flight plans are designed to capture every panel at consistent angle and resolution, producing a complete visual record suitable for IEC 62446 documentation.
Aerial thermal imaging to identify hot spots, substring failures, and bypass diode anomalies across entire arrays in a single flight session. We classify thermal signatures by severity and correlate patterns to likely root causes: cell cracks, solder bond failures, potential-induced degradation (PID), or soiling. Note: Client-provided thermal equipment may be required for certain payloads, or we can use high-resolution RGB for visual defect identification.
Topographic mapping and orthomosaic generation for greenfield solar development. Accurate terrain data for panel row grading design, drainage planning, and interconnection corridor routing. Deliverables integrate directly with PVsyst and AutoCAD Civil 3D for engineering design workflows. Especially relevant for sites requiring ERCOT interconnection documentation.
Recurring aerial surveys to track vegetation encroachment on panel rows, tracker systems, and access roads. We provide before-and-after documentation to verify mowing and herbicide treatment effectiveness. Vegetation shading on even a few cells triggers bypass diode activation, reducing string-level performance and accelerating module degradation over time.
Most utility-scale solar sites rely on inverter-level or string-level monitoring to track performance. These systems detect gross failures but cannot isolate individual panel defects. A single hot spot on one module may reduce string output by only 2-3%, well within the noise floor of production data affected by irradiance variability, soiling, and temperature coefficients. By the time a string shows measurable underperformance in monitoring software, dozens of panels may be affected. Aerial thermal inspection bridges this gap by providing panel-level resolution across the entire site in a single survey.
IEC 62446-3 establishes the framework for outdoor infrared thermography of photovoltaic systems. Compliant inspections require specific environmental conditions (minimum 600 W/m2 irradiance, low wind speed, stable cloud cover), calibrated thermal sensors, and systematic flight coverage. Our flight planning and data processing workflows are designed to meet these requirements, producing documentation that satisfies independent engineer reviews, warranty claim submissions, and insurance assessments.
Module manufacturers require specific evidence to process warranty claims: georeferenced thermal images showing the defect, classification of the anomaly type (hot spot, cell crack, bypass diode failure, PID), and correlation with I-V curve data or string-level monitoring records. We deliver defect reports with the classification detail and spatial accuracy needed to support these claims. Each flagged panel is located by row, table, and string position so your O&M team can verify findings and initiate replacement workflows.
Solar projects connecting to the Texas grid through ERCOT face specific documentation requirements for site conditions, as-built verification, and ongoing compliance. Aerial surveys provide the spatial data needed for interconnection applications, boundary verification, and environmental compliance documentation. For operating sites, recurring aerial surveys create a longitudinal record of site conditions that supports regulatory reporting.
We design flight lines matched to your specific row spacing, table configuration, and tracker orientation. Fixed-tilt and single-axis tracker sites require different approaches. Flight altitude is set to achieve panel-level thermal resolution while maintaining efficient coverage rates across the full installation.
Thermal inspections are scheduled during peak irradiance windows (typically 10 AM to 2 PM) with stable cloud conditions and minimum 600 W/m2 irradiance per IEC 62446-3. We monitor weather forecasts and coordinate with site personnel to maximize data quality. Soiling analysis flights may be timed separately.
Raw thermal and RGB imagery is processed into georeferenced orthomosaics, panel-level defect annotations, and structured classification reports. Deliverables are formatted for integration with your CMMS, asset management platform, or GIS system. Turnaround is typically 5-7 business days from flight completion.
A 100 MW solar installation can contain over 300,000 individual panels spread across hundreds of acres. Walking rows with a handheld thermal camera is not scalable. Ground crews miss cell-level hot spots that are invisible to the naked eye but clearly visible from 120 feet with calibrated thermal sensors. Potential-induced degradation (PID), micro-cracks from hail or thermal cycling, and soiling patterns all reduce energy yield gradually enough that inverter-level monitoring alone cannot isolate the affected strings. Aerial thermal inspection is the industry standard for utility-scale solar O&M because it is the only method that scales to the size of modern installations.
| Thermal Maps with Panel-Level Annotations | Georeferenced thermal orthomosaics with per-panel anomaly tags, GPS coordinates, and severity classification |
| Defect Classification Reports | Structured anomaly reports rated against IEC 62446-3 guidelines for prioritized maintenance response |
| Orthomosaic Site Maps | High-resolution RGB orthomosaics at sub-inch GSD for as-built and site condition assessment |
| Vegetation Encroachment Mapping | Classified vegetation maps with before/after comparisons and shading impact zones tied to affected rows |
Whether you need a one-time thermal survey or a recurring inspection program, we will tailor the scope to your site and O&M requirements.
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