- NEMSA raises alarm over rising fire incidents linked to poorly installed rooftop solar systems, citing substandard materials and non-compliance with safety standards.
- The agency issues strict installation and maintenance guidelines under the Electricity Act 2023, mandating certified installers, proper system design, and safety protections to reduce fire risks.
Nigerian Electricity Management Services Agency (NEMSA) has raised concerns over increasing fire outbreaks linked to improperly installed rooftop solar photovoltaic systems across Nigeria. The agency linked the incidents to poor workmanship, substandard equipment, and failure to follow technical standards.
NEMSA stated that while Nigerians continue to adopt solar energy due to unreliable grid supply, safety must remain a priority. It warned that the growing number of incidents highlights gaps in installation quality and regulatory compliance.
Under Sections 176(m) and 184(8) of the Electricity Act 2023, NEMSA has issued new safety guidelines for rooftop solar installations. The agency directed users to engage only NEMSA-certified electrical contractors who possess valid competency certificates.
The guidelines require installers to conduct load assessments before installation and ensure that roofs can safely support solar systems. In addition, installers must use proper mounting structures to prevent structural damage and fire hazards.
NEMSA also instructed that installers avoid using damaged solar modules, including those with cracks, bent frames, or faulty junction boxes, as these increase the risk of electrical failure and fire outbreaks.
For electrical safety, the agency mandated the installation of DC and AC isolators, circuit breakers, surge protection devices, and proper earthing systems with resistance levels of 2 ohms or below. It also required at least 0.13 metres of clearance between roofing material and solar panels to ensure proper ventilation and prevent overheating.
The agency further emphasised safe battery installation. It directed that batteries must be placed in ventilated, secure locations away from living areas, while lithium batteries must include battery management systems and cooling mechanisms.
NEMSA also required proper cable management, including separate routing of power and communication lines, to prevent interference and reduce fire risks. It added that installers must ensure proper load separation when systems cannot fully support household demand.
Finally, the agency urged regular maintenance, including panel cleaning, inspection of cables and inverters, and timely replacement of faulty components. It warned that strict compliance with these standards is essential for safety, performance, and regulatory approval.