RAAD Logo
Back to Blog
Case Studies

55 Solar Thermography Inspections Missions - Minnesota

How Raad completed 55 commercial solar array inspections in Minnesota in under two weeks, leveraging a network of 2,000+ US pilots for local coverage and strict QC workflows.

Teej Ragsdale
February 10, 2025
6 min read
Share:
55 Solar Thermography Inspections Missions - Minnesota

This case study details how Raad successfully completed 55 commercial solar array inspections in Minnesota in under two weeks. The client, a large solar technology company, required infrared inspections under specific conditions, including high solar irradiance and real-time panel tilting.

The Challenge

A major solar technology company needed comprehensive thermal inspections across 55 commercial solar installations throughout Minnesota. The complexity of this project went beyond standard solar inspections—each site required:

  • Condition-Specific Timing: Flights had to occur during periods of high solar irradiance to accurately detect thermal anomalies
  • Real-Time Coordination: Panel tilting had to be coordinated with flight operations to ensure optimal capture angles
  • Weather Dependencies: Clear skies and specific temperature conditions were required for accurate thermal readings
  • Tight Timeline: All 55 sites needed to be completed within a two-week window

Traditional inspection approaches would have struggled to meet these requirements, especially given the geographic spread of sites across Minnesota and the narrow weather windows available.

The Solution

Raad's solution involved using its platform to manage sites, scheduling flights during optimal weather conditions, leveraging its network of over 2,000 US pilots for local coverage, and implementing a strict QC workflow.

Key Components:

  • Centralized Site Management: All 55 sites were tracked and coordinated through Raad's platform, enabling real-time visibility into project status
  • Weather-Optimized Scheduling: Flights were dynamically scheduled based on weather forecasts to maximize the number of sites captured during optimal conditions
  • Local Pilot Network: Minnesota-based pilots were assigned to nearby sites, reducing travel time and enabling rapid response to weather windows
  • Standardized Protocols: All pilots followed identical thermal imaging parameters to ensure data consistency across all sites
  • Multi-Layer QC: Every thermal dataset underwent automated checks for proper exposure, coverage, and thermal calibration, followed by manual review

Not on the RAAD Network?

Fill out a pilot profile on RAAD.com now and start receiving mission opportunities.

The Results

The results highlight the efficiency, precision, and cost-effectiveness of Raad's approach, making it ideal for EPC, O&M, solar asset owners, and energy companies needing condition-specific thermal and RGB inspections.

  • On-Time Delivery: All 55 sites were completed within the two-week deadline despite weather challenges
  • High Data Quality: Zero re-flights were required thanks to strict QC protocols and experienced local pilots
  • Cost Savings: The client saved an estimated 40% compared to traditional inspection methods by eliminating travel costs and reducing project duration
  • Actionable Insights: Thermal data revealed panel defects, string failures, and hotspots that enabled the client to prioritize maintenance and maximize energy production

Technical Approach

Solar thermography requires precise timing and conditions to produce actionable data. Raad's approach ensured optimal results through:

Timing and Conditions:

  • Flights scheduled during peak solar irradiance (typically 10 AM - 2 PM)
  • Minimum irradiance threshold of 600 W/m² to ensure detectable thermal signatures
  • Clear sky conditions to eliminate cloud shadows and inconsistent heating
  • Coordination with site operators for real-time panel tilting to optimize capture angles

Data Collection Standards:

  • Thermal resolution: 640x512 or higher
  • Flight altitude optimized for 2-3 cm/pixel ground sample distance
  • 80% front overlap and 70% side overlap for complete coverage
  • Radiometric calibration verified before each flight

Why This Approach Works for Solar

Solar installations present unique challenges for aerial inspections. They're often located in remote areas, require specific environmental conditions for accurate thermal imaging, and need regular monitoring to maintain optimal performance. Raad's distributed network model addresses all of these challenges:

  • Geographic Coverage: Local pilots can reach remote sites quickly without expensive travel
  • Weather Flexibility: Multiple pilots across a region increase the likelihood of capturing sites during optimal conditions
  • Scalability: The same approach works for 5 sites or 500 sites without adding complexity
  • Consistency: Centralized protocols and QC ensure uniform data quality regardless of which pilot flies the mission

Applications for Solar Stakeholders

This case study demonstrates the value of Raad's approach for various solar industry stakeholders:

  • EPC Contractors: Pre-commissioning inspections to verify installation quality before handoff
  • O&M Providers: Regular thermal inspections to detect issues before they impact production
  • Asset Owners: Portfolio-wide monitoring to optimize performance and plan maintenance
  • Energy Companies: Due diligence inspections for acquisitions and performance verification

For any organization managing solar assets at scale, Raad's platform offers a reliable, cost-effective solution for condition-specific thermal and RGB inspections.

Not on the RAAD Network?

Fill out a pilot profile on RAAD.com now and start receiving mission opportunities.

Teej Ragsdale

About Teej Ragsdale

Chief Executive Officer

Repeat entrepreneur on a mission to modernize how we understand the infrastructure we all rely on.

Tags:Case StudySolarThermographyMinnesotaInfrared InspectionO&M

Related Articles

Dallas–Fort Worth: 100 Drone Rooftop Thermal Inspections

Dallas–Fort Worth: 100 Drone Rooftop Thermal Inspections

How Raad successfully completed 100 drone rooftop thermal inspections in Dallas–Fort Worth, involving 200 flights within weeks using a network of 2,000+ US pilots.

Read More →