HV Wildlife Protection – Securing Electrical Substations and Preserving Biodiversity
The presence of birds and small mammals near MV/HV electrical installations represents a major risk to power supply continuity and species preservation. In an electrical substation, a simple contact between two potentials, or between a phase conductor and a metallic grounded part, can generate an electric arc, damage critical equipment, trigger protection systems and cause service interruptions.
To limit these incidents, SYNERDIS®, an entity of the SANERGRID® Group, integrates MIDSUN® silicone technology into its E/COVER, E/SLEEVE, E/BARRIER and E/PLATE ranges. These insulating solutions prevent accidental contact between wildlife and live components, while withstanding the severe constraints of MV/HV environments.
This document details wildlife-related challenges, risks to electrical assets, technical benefits and SANERGRID/SYNERDIS solutions adapted to all types of substations and power lines.
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E/BARRIER Thermoplastic disc for bird protection
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E/COVER Removable insulating covers for bird protection
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E/COVERBIRD Silicone covers for thermography and bird protection
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E/FOURREAU Insulating bird protection sheath for live cables
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E/PEINTISO Silicone insulating paint for bird protection
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E/PLAQUE Silicone cover for bird protection
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E/TAPE Insulating Tape for Bird-Safe Protection
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Why Protect Your MV/HV Substations and Lines Against Wildlife?
A Demanding Technical and Environmental Context
The evolution of electrical networks, expansion of primary substations, and line densification increase interactions with local wildlife. Birds use HV structures as perches, while others face risks during flight; meanwhile, rodents enter cabinets and technical areas.
These behaviors lead to animal-related power outages, caused by:
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Unintentional bridging
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Bird collision prevention power lines issues on exposed conductors
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Surface flashovers and nuisance tripping
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Costly and repetitive equipment failures
Beyond electrical continuity, implementing wildlife protection for power grid infrastructure is now a lever for performance, regulatory compliance, and protecting endangered species.
Bird Electrocution Prevention and Rodent Risks
Typical incident scenarios are well documented in the industry:
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A large bird spreads its wings between a transformer bushing and a metallic part.
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A raptor perches on an MV connection, requiring an anti-electrocution device for birds.
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A rodent bridges two live zones, highlighting the need for rodent protection for electrical substations.
Using E/COVER, E/SLEEVE and E/BARRIER solutions provides wildlife-safe power grid solutions by increasing insulation distances and eliminating direct contact zones.
Electrical Faults and Grid Reliability Animal Protection
Animal-origin faults represent a critical operational issue, causing unplanned transformer shutdowns and MV insulator degradation. By implementing insulating covers for insulators and high-performance materials resistant to UV and pollution, you stabilize operation and extend the service life of electrical assets.
SYNERDIS + MIDSUN® Technology: High-Performance Animal Mitigation for Power Lines
4th-Generation Silicone Technology for MV/HV Environments
MIDSUN® solutions are formulated for bird safety for HV substations, withstanding:
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Long-term UV and ozone exposure
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Saline pollution and industrial dust
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Corona effect and large thermal amplitudes
MIDSUN® self-fusing silicone provides reliable insulation up to 35 kV with easy installation and multi-manufacturer compatibility.
SYNERDIS Product Ranges – Technical Solutions According to Needs
E/SLEEVE – Silicone Insulating Sleeves for Conductors and Cables
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Insulation of bare conductors and protection of joints.
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Effective bird diverters overhead power lines can be complemented by these sleeves to prevent bridging.
E/COVER – Insulating Covers for Bushings, Feedthroughs and Busbars
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Fast installation and optimal flexibility.
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Elimination of accidental contact zones on sensitive equipment.
E/BARRIER – Anti-Contact Barriers for Metallic Parts Near HV
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Prevents surface flashovers and secures interfaces where birds may perch.
Visual Protection and Markers
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For lines requiring high visibility, overhead line markers birds and visual markers for HV lines serve as an essential anti-collision device for birds, reducing strikes in flight.
Multi-Site Compatibility and Extreme Conditions
SYNERDIS/MIDSUN solutions maintain performance in coastal, industrial, and mountain regions with high wildlife presence. They are compatible with MV/HV equipment from all major manufacturers.
SYNERDIS: Expertise and End-to-End Support
Site Studies and Risk Analysis
Our teams assess probable fault paths, incident history, and local species typology to propose an optimized configuration compliant with site requirements.
Installation and Best Practices
The SANERGRID Group provides on-site installation, supervision, and training. As protections are removable, inspections remain fast and non-invasive.
Concrete Benefits of SYNERDIS / MIDSUN Solutions
Securing Electrical Equipment
Protections reduce arcs, extend component lifespan, and ensure grid reliability animal protection.
Reduced Operating Costs
Minimize nuisance tripping, corrective interventions, and unscheduled maintenance.
Biodiversity Protection
Substations and power lines become safer for local and migratory species, especially in ecological corridors.
Contact SYNERDIS for Your Wildlife Protection for Power Grid Projects
SYNERDIS provides full documentation, reference selection support, and customized quotations for all your bird electrocution prevention needs.