
We conduct year-round aerial inspections to detect inactive strings in your system
The inactive string monitoring system quickly detects inactive strings and misaligned trackers in photovoltaic plants. It uses aircraft equipped with multispectral sensors for effective inspections even in winter, ensuring frequent checks and timely interventions.

We fly in winter to optimize your PV plants for peak season performance
Winter String is a year-round solution, but it is particularly effective during winter months. The service enables the rapid detection of inactive strings and facilitates targeted maintenance actions.
How We Fly
Based on your needs, we plan the inspection with drones piloted by professionals.
We offer the infrastructure to conduct aerial surveys independently with a hangar and a resident drone on-site.
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Solution benefit
Accurate detection of active and inactive strings.
Identification of misaligned or damaged trackers.
Comprehensive reports delivered within 24/48 hours.
No solar irradiance requirements: guaranteed operational flights all year-round.
Transparent pricing: no hidden costs.
Quantification of energy losses and associated economic impact.
Prepare your PV plant for the peak season production with our Winter String solution
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Access to data and customized reports directly from the Web Portal
The Wesii Web Portal centralizes all data from plants and sites, including analyses and serial numbers, providing access to customized reports and outputs, simplifying the decision-making and operational process.
Discover the Wesii Web Portal