As Singapore moves toward a more sustainable future under the Green Plan 2030, solar energy is becoming a serious consideration for homeowners and businesses alike. But one question dominates every conversation about switching to solar: how much does solar panel installation cost in Singapore?
This guide provides a detailed breakdown of installation costs, system types, long-term savings, and what influences pricing. Whether you’re a homeowner or a business evaluating solar, this is your one-stop resource.
Average Cost of Solar Panel Installation in Singapore
Solar panel installation costs in Singapore depend on multiple factors, such as:
- System size (measured in kilowatt-peak, or kWp)
- Roof type and available space
- Type of solar panels and inverters used
- Installation method (standard vs integrated)
- Whether you opt for a rent-to-own, outright purchase, or solar-as-a-service model
Here’s a breakdown of estimated costs in 2025:
| System Size (kWp) | Estimated Cost (SGD) | Estimated Roof Space | Suitable For |
|---|---|---|---|
| 2 – 3 kWp | $6,000 – $10,000 | ~16 – 24 m² | 3-room HDB flats / small households |
| 4 – 5 kWp | $10,000 – $18,000 | ~32 – 40 m² | Average terrace houses / mid-sized landed homes |
| 8 – 10 kWp | $18,000 – $38,000 | ~64 – 80 m² | Semi-detached houses, bungalows, small commercial units |
| 20+ kWp | $40,000 and above | 160 m² and above | Large commercial and industrial properties |
Note: These costs include panels, inverter, mounting system, wiring, installation labour, and basic warranty.
Upfront Purchase vs Financing Options
You can choose from three main models:
1. Outright Purchase
You pay the full installation cost upfront. This suits homeowners with available capital who want to enjoy maximum savings and ownership benefits.
- Pros: Own the system immediately, 20+ years of free electricity after breakeven
- Cons: High upfront cost ($15k–$30k)
2. Rent-to-Own (RTO) Solar Panel Pricing
Pay monthly instalments over 5 to 10 years. You own the system at the end of the term.
| Plan Duration | Monthly Payment (Est.) | Upfront Cost | Inclusions |
|---|---|---|---|
| 10 years | From $210/month | $0 | Free maintenance, performance warranty |
| 5 years | From $160/month | ~50% upfront | Lower total cost, faster ownership |
- Best For: Homeowners who want to avoid a lump sum payment
- Breakeven: Typically achieved within 5–8 years
3. Solar-as-a-Service
You don’t own the panels. Instead, you “subscribe” to solar by paying for the electricity generated—usually at a discount compared to SP Group rates.
- Pros: $0 upfront, free maintenance
- Cons: You don’t own the system; lower long-term ROI
Breakdown of What You’re Paying For
A typical residential solar system includes:
| Component | Estimated Share of Total Cost |
|---|---|
| Solar panels (e.g. Trina, Jinko, REC) | 45–55% |
| Inverter (e.g. Huawei, SolarEdge, SMA) | 10–15% |
| Mounting system + cabling | 10–12% |
| Labour and engineering | 15–20% |
| Permits, monitoring, testing | 5–8% |
Warranties: Most panels come with a 25-year performance warranty, while inverters are usually covered for 5–10 years.
Factors That Affect Solar Panel Pricing in Singapore
Several variables can influence the total cost of your solar panel system:
1. Roof Type and Orientation
- Flat concrete roofs require angled mounts, adding cost
- Metal roofs (common on landed homes) are easier and cheaper to install
- North-south facing roofs maximise solar output
2. System Size
Larger systems benefit from economies of scale. While a 10 kWp system is twice as large as a 5 kWp, it may not cost twice as much.
3. Installation Complexity
- Multi-storey buildings require scaffolding and safety equipment
- Older homes may need electrical upgrades
- Difficult roof access can increase labour time
4. Quality of Components
Top-tier panels and hybrid inverters (solar + battery-ready) cost more but offer higher efficiency and longer warranties.
Savings & Payback Period
Let’s look at a practical example:
Scenario: A family installs a 5 kWp system for $18,000
Monthly electricity savings: $300
Annual savings: $3,600
Breakeven: 5 years
Post-breakeven savings (15 more years): $54,000
With minimal maintenance, solar becomes highly profitable after the breakeven point. You essentially enjoy free electricity for 20–25 years.
Government Incentives & RECs in Singapore
Unlike some countries, Singapore does not offer upfront solar rebates. However, you can still benefit through:
1. Grid Sell-Back (SP Group)
Any excess solar energy is sold back to the grid at the prevailing Energy Market Price (EMP). This can offset part of your monthly bill.
2. RECs – Renewable Energy Certificates
If you’re using solar to meet corporate sustainability goals, your system may generate RECs which can be sold on the open market.
- One REC = 1 MWh of solar energy generated
- Can be monetised by commercial property owners
Maintenance Costs
Solar panels are low-maintenance, but here’s what to expect:
| Maintenance Item | Cost (Est.) | Frequency |
|---|---|---|
| Cleaning (optional) | $200 – $400 | Once a year |
| Inverter replacement | $1,200 – $2,500 | Every 10 years |
| Remote monitoring (if enabled) | Often free | Ongoing |
Note: Rent-to-own and solar-as-a-service packages often include 5–10 years of free maintenance.
Should You Get Batteries?
In most cases, batteries are not cost-effective in Singapore due to high pricing and limited solar generation at night.
| Type | Cost | Capacity | Notes |
|---|---|---|---|
| Tesla Powerwall | $12,000 – $18,000 | 13.5 kWh | Only useful for backup or off-grid |
| Hybrid inverters | Add ~$2,000 | Battery-ready | Worth considering for future expansion |
How to Choose the Right Installer
When comparing solar providers, don’t just look at the quote. Ask about:
- Brands and warranties (25 years panel performance minimum)
- License to operate under EMA guidelines
- Track record and case studies
- After-sales support and monitoring system
- Performance assumptions (avoid inflated ROI projections)
Final Thoughts: Is It Worth It?
Absolutely—especially if you plan to stay in your property for 5+ years. A properly installed solar system:
- Cuts your electricity bill by 50–80%
- Increases property value
- Pays for itself in 5–7 years
- Lasts over 25 years with minimal upkeep
Contact First Solution Group
If you’re ready to make the switch, consult a licensed solar panel contractor like First Solution Group. We provide:
- Tailored system designs
- Flexible payment plans (including $0 upfront)
- Guaranteed workmanship and long-term savings
Located in: Alpha Building
Address: 45 Kallang Pudding Rd, #09-02 Alpha Building, Singapore 349317
Phone: 9855 6824
Get a free quote today and discover how solar can work for your home or business.