PVStop - Making Solar Energy Safe

Nobel Fire Systems is known for its cutting edge firefighting systems, but our interest doesn’t just lay in active fire suppression. Our ethos is one of Safety throughout. That is why we bring to our clients a ground-breaking safety product aimed squarely at a specific and potentially deadly risk.

The Risk

There are over 1 million Photovoltaic Solar panels in the UK alone and their use is expanding rapidly as cost and availability makes the technology more accessible.  However, with that increase in numbers a corresponding increase in safety incidents occur.

Solar panels can never be stopped from producing electrical power.

Whilst Solar panels are exposed to light they produce lethal amounts of Direct Current. DC electricity is different to AC electricity, and its presence or magnitude cannot be easily detected, so it is more dangerous than typical AC sources.

PV solar panels will continue to produce DC electricity regardless of if they are in a damaged state or not, so they should always be regarded as highly dangerous, the risk of electrocution should be considered ‘ever-present’, regardless of the type and proximity of any shut off device fitted.
The only way of rendering a PV Solar system totally safe is to completely eradicate the light source in a fashion that can be guaranteed not to become dislodged or compromised.

The traditional method of obscuring light has been to use a thick canvas tarpaulin or black plastic sheets to cover the panels. But if the panels are situated on a roof or difficult to reach location this can be a highly dangerous task to carry out effectively.

Fire & Rescue Services throughout the UK have recognised that this is a real threat and risk to their firefighting personnel, and up until now there has been no completely practical safe solution to prevent Solar panels from producing DC electricity.

Installation, Service and Maintenance companies face the same risk. It isn’t just if Solar panels are involved in a fire incident. The Installation and routine maintenance of PV Solar panels exposes contractors and engineers to the same risk of electrocution as they carry out any form of work on the electrical components and wiring.  


PVStop is a fire-retardant solution that acts as an easy to apply liquid blanket to render solar panels safe. UK Fire and Rescue Services are now investing in this product acknowledging its unique safety properties.

How does it work?

The primary function of PVStop is to render PV installations electrically safe while acting as a fire retardant solution. The polymer spray forms an obscuration membrane on the surface of the panel and completely blocks any light source from the electricity generating surface of the PV panel. This robust polymer sets quickly to form a resilient barrier not only to light but to the elements such as rain and wind so once applied it can’t be dislodged or accidentally re-expose the PV panel surface.

The PVStop spray delivery system allows users to cover solar panels in a matter of seconds. It can be sprayed at a safe distance, which allows the coating to be applied from a location of safety.

The polymer film is designed to stick to solar panels during all weather conditions, negating the necessity to place canvas or thick plastic sheets physically over the panel.

Once the coating has dried, PVStop can be peeled off by hand easily. The coating does not contain any adhesives and does not damage solar panels in any way.

Mr Ian Bartle, Managing Director of Nobel Fire Systems, said of PVStop;

“PVStop fits perfectly within our innovative approach to safety, seeking out unique products for special risk environments. Our drive for research and development in cutting edge technology draws fellow innovators and manufacturers alike, and allows us to bring to the market safety solutions that make a difference.”

01706 625777

Supplier Profiles

Schneider Electric

Schneider  Electric  is  leading  the  Digital  Transformation  of  Energy  Management  and  Auto

Tiger Turf

Founded in 2000, the UK division of TigerTurf designs and manufactures artificial turf for sport