Written reply to PQ on Safety measures and regulations for installation and maintenance of solar photovoltaic systems

Question

Mr Desmond Choo: To ask the Deputy Prime Minister and Minister for Trade and Industry in light of the recent fire incidents involving solar photovoltaic (PV) systems (a) how does the Ministry ensure the proper installation of solar PV systems; (b) whether there are any mandatory maintenance requirements for solar PV systems in Singapore especially those that which service critical infrastructures such as data centres; and (c) whether the Ministry will ensure that there are proper training for professionals who install solar PV systems to reduce the risk of electrical faults.

Written Answer by Deputy Prime Minister and Minister for Trade and Industry Gan Kim Yong

1. Solar photovoltaic (PV) installations are safe if properly installed. The installation must first be certified by a licensed architect or engineer to ensure that the PV system complies with all relevant regulations. Thereafter, a Licensed Electrical Worker (LEW) must ensure that the solar PV system meets the requirements to connect safely to the grid or an electrical installation (EI), such as the electrical system of a building. LEWs are licensed by the Energy Market Authority (EMA) and are required to undergo regular refresher training to stay updated on advancements in technology and adhere to good engineering practices.

2. There are no mandatory maintenance requirements specifically for PV systems. However, most industrial and commercial solar PV systems are connected to EIs which require a licence from EMA to operate. Under the licence, the EI including the solar PV system must be regularly inspected by an LEW to ensure compliance with electrical safety regulations.