What the solar panel hazard means for emergency response
Britannia Fire has launched PVSTOP, a solar panel block-out solution supplied in composite P50 units.
PVSTOP is a liquid coating designed to block light on contact and shut down solar panel power generation during an emergency.
Solar panels generate electricity whenever exposed to light and cannot be switched off during an incident.
This creates a DC electrical hazard that persists regardless of isolator switches, rapid shutdown systems or other electrical controls.
PVSTOP works by blocking light at source to stop power generation on contact.
Partial coverage is intended to break the electrical circuit and render panels electrically safe.
Intended use and material properties
Britannia Fire says the system is intended to allow first responders and maintenance teams to isolate solar panels after a short circuit, storm damage or early signs of smoke or arcing.
PVSTOP is non-flammable, fire-retardant and weatherproof.
It can be applied to wet and dry surfaces.
The coating solidifies and peels away without damaging solar panels.
It can remain in place for up to 12 months.
PVSTOP is water-based and non-toxic, with disposal through general waste.
Verification, units and partner comments
Britannia Fire says PVSTOP is the only solar safety solution to achieve ISO 14034:2016 Environmental Technology Verification, with independent testing confirming effectiveness.
The technology has been operationally validated by London Fire Brigade, Fire Department of New York and Singapore Civil Defence Force.
PVSTOP is available in 6L and 9L composite P50 units that do not require annual servicing.
The composite cylinders are up to 50% lighter than steel models, corrosion resistant and suited to outdoor or coastal solar installations.
Jim Foran, Co-Founder and CEO of PVSTOP International, said: “PVSTOP solves a problem most people don’t know exists.
“Solar panels generate potentially lethal DC electricity when exposed to light, regardless of any switches or shutdown systems.
“Until now, there’s been no practical way to eliminate this hazard at source.
“This partnership with Britannia Fire combines our proven de-energisation technology with their market-leading composite delivery system to provide UK organisations with a genuine safety solution.”
Andy Spence, Joint Managing Director of Britannia Fire, said: “As the UK’s solar industry expands, safety innovation must keep pace.
“The partnership with PVSTOP International demonstrates Britannia Fire’s commitment to innovation and protecting people, property and the environment.
“Our composite units are popular with customers because they’re lightweight, easy to handle and require minimal maintenance.
“The addition of PVSTOP strengthens the P50 product range and provides a solar safety solution for public and private sector sites.”
The companies framed the product as a way to address electrical hazards linked to live solar panels during incidents.