Updated: 29 April 2025

In this article we explore the top five risks of solar energy, including severe weather events that can damage panels, micro-cracking, and theft due to remote locations, while highlighting the importance of regular maintenance and inspections of solar panels. We also signpost you to extra resources and more information.

It’s sadly ironic that the solar farms which have been introduced as a way to mitigate the effects of climate change are now falling victim to the same severe weather conditions that they are designed to alleviate.

We’re seeing an increase in the number of extreme weather events across the globe and these can spell disaster for solar farms. In 2021, Storm Arwen wreaked havoc at a solar farm near Wolviston, smashing hundreds of glass solar panels and damaging rows and rows of photovoltaics. ²

In extreme weather, solar panels can operate as lifting surfaces making the panels vulnerable to being blown away, so it’s important that these are securely tethered. Panels are in danger of being smashed by falling debris that’s carried by the wind. If solar farms are struck by lightning it can result in damage to modules, cables and electrical equipment which can cost many thousands of pounds to repair or replace.

Theft is also an issue for solar farms, particularly because they’re often located in remote, rural areas where police response times can be slower. This makes a robust approach to security essential. Panels and cables offer a relatively easy, and high value target for thieves due to their high value and relative ease of access. Police data indicates a staggering 48% increase in solar panel and cabling theft between 2021 and 2022. ³ Additionally, between January and August last of year, over 750 kilometres of cable were stolen from solar farms, with many sites being targeted multiple times, ⁴ resulting in serious financial losses for the companies operating them.

Floating solar panels are solar panels that are mounted on a structure that floats on water and, in the main, are a great innovation as they don’t take up valuable land space and can be up to 15% more efficient than terrestrial farms.⁵

While they offer a lot of potential for renewable energy generations, the sector remains underdeveloped in the UK.⁶ As it’s a new technology, these types of solar farms require specialist equipment and therefore cost more to construct and install than similar sized farms that are located on solid ground. They can also have issues with moisture and water droplets collecting inside the cables which reduces the amount of sunlight hitting the panels, making them less efficient. Water ingress is also problematic as it can lead to major power losses and potential safety hazards, again increasing the risks associated with this type of renewable.

The UK government’s commitment to expanding energy over the coming years highlights the importance of standardisation of testing, energy conversion, use of materials, and health and safety practices, all of which are essential to minimising risks and maximising the potential of green energy installations.  

Regular cleaning and maintenance play a vital role in extending the lifespan and boosting the energy output of solar panels, whilst also avoiding costly repairs. Additionally, regular inspections are crucial for making sure these systems meet the requirements of The Electricity at Work Regulations (EAWR), such that “all electrical systems should be maintained so as to prevent danger”. Applying the guidance incorporated within the standard BS 7671, will ensure these requirements are met whilst also helping to maintain their efficiency and safety. Consistently applying these practises will be essential for unlocking the full potential of solar energy and paving the way for a sustainable future. 

We’re keen to support our customers and to provide guidance on how photovoltaic solar panel systems can be installed and used safely as well as offering electrical inspection and testing services.  

If you'd like more information, there are two risk management guides that are free to download from the Fire Protection Association: 

The rooftop mounted solar systems guide highlights the hazards associated with PV solar panel installations and provides risk control recommendations. 

Recommendations for fire safety with PV solar panel installations is a joint code of practice for fire safety with photovoltaic panel installations, with a focus on commercial rooftop mounted systems, but it has lots of guidance for solar panel systems in general too.

Regular inspections are key to keeping Solar PV systems efficient and safe. As the UK ramps up solar energy initiatives, it’s vital to ensure your systems comply with The Electricity at Work Regulations and are regularly maintained and inspected to prevent danger to persons. BS 7671 provides guidance on how this can be achieved. Read our brochure or contact us today to find out how we can help with commercial Solar PV inspections.