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As more Filipino households turn to rooftop solar energy to cut electricity costs, industry experts are calling for stronger regulations to prevent safety hazards linked to unregistered and do-it-yourself (DIY) solar installations.

Electrical engineers, utility companies, and safety advocates have raised concerns over the growing number of solar systems being installed without permits, inspections, or proper coordination with power distributors. They warn that while solar energy offers significant benefits, improper installation can put lives, property, and even the power grid at risk.

The Institute of Integrated Electrical Engineers (IIEE) said many unregistered or so-called "guerrilla" solar installations operate outside government regulations and often fail to comply with the Philippine Electrical Code. According to the group, these systems could lead to electrical fires, electrocution, equipment damage, unsafe back-feeding, and power quality issues that may affect entire communities.

Under Republic Act No. 7920, or the New Electrical Engineering Law, only licensed electrical practitioners are authorized to design, install, and operate electrical systems, including solar power systems intended for electricity generation.

Industry leaders have echoed the need for tighter oversight. Adelino V. Garcia Jr. stressed that solar photovoltaic (PV) systems should only be designed and installed by qualified professionals. He also cited a recent incident involving a property that reportedly suffered fire damage linked to an unsafe solar installation.

Former IIEE national president Francis Mapile likewise urged regulators to crack down on unauthorized solar systems, saying bypassing established safety requirements is not merely a compliance issue but a public safety concern.

Meanwhile, Manila Electric Company emphasized that it supports renewable energy and the responsible adoption of solar technology. However, the utility warned that improperly installed systems could endanger line workers, damage property, and cause voltage fluctuations that affect other consumers connected to the same distribution network.

Meralco Chief Operating Officer Ronnie L. Aperocho said the company continues to promote sustainable energy solutions but stressed that safety and compliance should always come first.

Beyond installation practices, experts are also raising concerns about the quality of solar equipment entering the market. Government regulators are now working to strengthen standards for solar panels, inverters, battery storage systems, cables, and other key components to ensure they meet safety and quality requirements.

The Department of Trade and Industry is currently pushing regulations that would require certification and compliance checks for solar energy products sold in the country. Officials say the move aims to protect consumers from substandard equipment and unscrupulous providers while helping maintain the reliability of the power grid.

Safety groups have also joined the call. The Safety and Health Association of the Philippine Energy Sector and the Safety Organization of the Philippines stressed that rooftop solar systems must comply with existing laws, including the National Building Code, Fire Code, and Occupational Safety and Health standards.

Industry stakeholders agree that the growing popularity of solar energy should be matched by stronger enforcement, stricter safety standards, and greater public awareness to ensure that the country's transition to cleaner energy remains safe, reliable, and beneficial for all.