How much do solar panels cost in Singapore?
Roughly S$1,000 to S$1,600 per kWp installed, which puts a typical 12 to 20 kWp landed system around S$15,000 to S$25,000. Below is exactly where that money goes, and what moves the number.
S$1,000–1,600
Per kWp installed
S$15k–25k
Typical 12–20 kWp system
~5 yrs
To pay it back
Bigger systems cost more in total but less per kWp, because labour, permits, and the inverter are shared across more capacity.
Where your money goes
No black box on the price.
A solar system is not just panels. Here is roughly how an installed price splits, so you can read a quote and spot what is missing.
Watch the scaffolding line
Proper scaffolding runs about S$2,000 to S$6,000, and it is the first thing a suspiciously cheap quote shaves down. That is not a saving, it is the crew’s safety on your roof. Singapore’s site-safety rules are strict for good reason, and experienced workers are not safe workers without it.
What proper scaffolding and site safety looks likeWhat changes your price
Three things move the number.
System size
Bigger systems cost more in total, but less per kWp. A 20 kWp system can run nearer S$1,000/kWp; a small one nearer S$1,600.
Single or three-phase
Single-phase caps you near 13 kWp. Three-phase unlocks larger systems, which lowers your cost per kWp.
Roof and extras
Tile roofs, tricky access, optimisers, or a battery all add cost. A simple metal roof keeps it lean.
The price in context
A cost, or an investment?
The honest way to judge the price is against what it returns. For most suitable landed homes that is a 5 to 6 year payback period, then two decades of largely free power. See your own cost and payback in two minutes.
Common questions
Still pricing it up?
About S$1,000 to S$1,600 per kWp installed. A typical landed system of 12 to 20 kWp lands roughly between S$15,000 and S$25,000, all in.
Rarely. A quote far below the rest has usually compromised somewhere you cannot see, often on scaffolding and site safety, or with lower-tier panels and thin warranties. Compare what is actually included, not just the headline price.
A proper quote covers panels, inverter, mounting, wiring, installation labour, scaffolding, permits, and grid connection. Watch for quotes that quietly drop scaffolding or grid connection and add it back later.
Yes. Larger systems cost less per kWp because labour, the inverter, permits, and scaffolding are spread across more panels. A small 6 kWp system might run near S$1,600 per kWp; a 20 kWp system often lands closer to S$1,000. This is one reason most installers recommend filling the available roof rather than undersizing.
Yes. Panel cleaning runs about S$200 to S$500 per visit and is recommended every 12 to 18 months in Singapore's humid, haze-affected climate. Budget one inverter replacement over the system's 25-year life, typically S$1,500 to S$3,500 installed. Factor roughly S$400 per year in maintenance into any long-term payback calculation.
A replacement string inverter typically costs S$1,500 to S$3,500 installed, depending on brand and system size. Inverters carry a 5 to 10 year manufacturer warranty and usually last 10 to 15 years in Singapore's climate. Budgeting one replacement over a 25-year panel lifespan is sound planning.
Three-phase systems cost more in total because they support larger system sizes, but they cost less per kWp because the panels are spread over a bigger installation. Single-phase supply caps a home at roughly 13 kWp. Three-phase unlocks larger systems where the cost-per-kWp advantage is most significant.
Keep reading
The rest of the decision.
Is it worth it?
Are solar panels worth it?
The honest verdict, the real payback, and when it is not worth it.
Read guideWill it fit?
Is my roof suitable?
Size, shading, orientation, and supply, checked the honest way.
Read guideWho to trust
How to choose an installer
Green flags, red flags, and the questions that protect you.
Read guide