Solar Panel and EV Charger Maintenance in Singapore

It depends on the site. Bird droppings, nearby trees, construction dust and haze all dirty panels faster, while a clean, open roof may need less. EMA advises regular inspection and cleaning as part of operations and maintenance. Landed systems we install get two maintenance visits a year under our annual maintenance programme, and panel cleaning can be added to any visit when your panels need it.

We quote solar maintenance for each site, because the price depends on system size, roof access and visit frequency. As a guide, EMA puts recurring solar O&M at generally between 1% and 2% of the total system cost a year. Send us your system size and roof type for a fixed quote. For EV chargers, the periodic inspection by a charger equipment specialist starts from S$150 per EV charger.

Rain washes off loose dust, but it does not remove bird droppings, leaf litter, sticky haze residue or algae, especially on low-tilt panels where water pools at the frame edge. Those spots shade cells and can drag down the output of a whole string, so periodic manual cleaning still pays off.

Compare your monitoring app with the same month last year, or with nearby sunny days. A sudden drop, one string producing far less than the others, or an inverter showing an error or fault light are all signs. Generation that drifts down slowly over months often points to soiling or new shade.

A charger at a landed home (restricted access) must be inspected by a charger equipment specialist every 24 months. Chargers in condos, workplaces and public places (non-restricted access) must be inspected every 6 months by an equipment specialist or every 12 months by a Licensed Electrical Worker. Inspection certificates must be kept for at least 2 years.

For landed-home chargers, LTA requires a charger equipment specialist. For shared chargers, either an equipment specialist every 6 months or a Licensed Electrical Worker every 12 months is allowed. LTA keeps a list of certified equipment specialists on its website, and our equipment specialists are on it.

Periodic inspection is a condition of keeping a charger registered under the Electric Vehicles Charging Act, and the charger owner or its registered responsible person is accountable for it. If an inspection is overdue, book one as soon as possible and check your charger's status with LTA. We do not quote penalty amounts because LTA has not published them in a form we could verify.

Yes. We inspect and maintain chargers and solar systems regardless of who installed them. Send us the make and model first so we can confirm parts availability and, for chargers, that the model is LTA type-approved.

EMA says solar systems are designed to last at least 30 years, while the inverters we install carry the manufacturer's warranty of up to 5 years depending on the model, so most systems will need an inverter replaced during their life. Replacement is price on request: it depends on the inverter size, the model and whether your panels need a like-for-like or upgraded unit.

Yes. We maintain shared resident chargers for condos, including The Coast @ Sentosa Cove, and can run the 6- or 12-month inspection cycle, fault response and remote monitoring under one contract. Ask us for a proposal sized to your car park.