The Nigerian Electricity Management Services Agency (NEMSA) has raised an alarm over a growing number of fire incidents linked to improperly installed rooftop solar photovoltaic systems across the country.
The agency noted that while the adoption of renewable energy is strongly encouraged in line with Nigeria’s energy transition objectives, safety must remain paramount.
NEMSA attributed the incidents to poor workmanship, the use of substandard materials, the absence of protective devices, and non-compliance with technical standards and regulations.
Pursuant to the Electricity Act 2023, the agency issued comprehensive safety guidelines for rooftop solar installations and directed the public to engage only qualified and NEMSA-certified installers.
“The installation of the rooftop solar PV system must be carried out only by NEMSA-certified electrical contractors,” the notice stated, adding that the contractor must be in possession of a valid competency certificate during the works.
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NEMSA mandated a load assessment of premises prior to installation to ensure appropriate system sizing and safe operation.
The agency warned that roofs must be structurally sound and capable of supporting the photovoltaic system, as weak roof construction can result in fire hazards.
“Panels should be installed using appropriate mounting structures,” the notice said, while damaged modules with cracks or loose junction boxes must not be used.
Installers must provide appropriately rated circuit breakers and fuses, install surge protection devices, and ensure proper earthing with an earth resistance value of two ohms or below.
Batteries must be installed in well-ventilated, secure locations away from living areas, with lithium batteries requiring a battery management system and cooling.”
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NEMSA also advised regular maintenance including cleaning solar panels to prevent dust accumulation and periodic inspection of cables and inverters.
The agency’s warning comes as more households and businesses turn to solar power amid persistent grid failures across the country.
