What happens to solar panels on pergolas during hailstorms or heavy winds?

Solar panels installed on pergolas or other freestanding structures are designed to withstand various weather conditions, including hailstorms and heavy winds. However, how well they hold up depends on the quality of the panels, the installation method, and the specific weather conditions.

General Durability of Solar Panels

Modern solar panels are very resilient and can endure most adverse weather conditions. They are typically designed to resist damage from hail up to golf ball size and strong winds, including those experienced in severe storms. Many solar panels can withstand winds of up to 140 mph, which is stronger than most UK windstorms.

Solar Pergolas in Hailstorms

Hail Resistance

Solar panels can generally withstand hail of pea to golf ball size without sustaining significant damage. However, larger hailstones can cause damage, although such occurrences are rare in the UK.

Impact on Pergolas

Pergolas might be more exposed to wind than roof-mounted panels, as they are freestanding structures. They might face higher wind loads, but well-installed solar panels should still be secure. The key to safety lies in ensuring the pergola structure is sturdy and the panels are securely fastened.

Solar Pergolas in Heavy Winds

Wind Resistance

Most solar panels can withstand heavy winds, and given the UK's wind patterns, pergola-mounted solar panels should generally remain secure. The strongest winds in the UK tend to occur at high altitudes or in exposed coastal areas, but even in these regions, winds rarely reach speeds that would jeopardize well-installed solar panels.

Stabilization and Installation

The stability of solar panels on pergolas largely depends on the quality and method of installation. Ensuring that the solar panels and the pergola structure are securely installed according to industry standards is crucial for withstanding high winds.

Practical Advice for UK Homeowners and Small Business Owners

Key Considerations

• Quality and Certification: Ensure that the solar panels and the pergola structure meet UK building codes and are certified for durability.
• Installation: Choose a reputable installer who is registered with relevant UK solar industry bodies.
• Inspect Regularly: Regular inspections can help identify any issues before they become major problems.

Common Mistakes to Avoid

• Inadequate Anchoring: Failing to secure the solar panels properly to the pergola can lead to damage or loss during strong winds.
• Poor Maintenance: Regular cleaning and inspection can help extend the life of the solar panels and ensure they perform well.

Pros of Solar Pergolas

• Provide shade while generating electricity.
• Can be installed in open spaces, not limited by roof availability.
• Offer aesthetic appeal with a modern design.

Cons of Solar Pergolas

• May require additional structural support to withstand wind loads.
• Could be more expensive than traditional installations due to structural requirements.

Overall, solar panels on pergolas can be a reliable and attractive option for UK homeowners and small businesses, provided they are well-designed and installed with robust weather conditions in mind.