Solar Panel Installation in Singapore 2026: Everything You Need to Know
Installing solar panels in Singapore involves permits, engineering assessments, and regulatory approvals that can feel overwhelming if you have never done it before. This guide walks you through the entire process step by step — from your first enquiry to the moment your system starts generating free electricity. Most installations take 4 to 8 weeks from contract to power-on.
Before You Start: Eligibility Check
| Property Type | Can Install Solar? | Notes |
|---|---|---|
| Terrace house | Yes | Most common residential type |
| Semi-detached house | Yes | Optimal for 8 to 12 kWp systems |
| Bungalow / detached | Yes | Largest roof area, best economies of scale |
| Cluster house / townhouse | Depends | May need MCST approval |
| Condo (penthouse) | Depends | Requires MCST approval |
| HDB flat | No (individual) | Common areas via HDB SolarNova |
Roof Requirements
- Minimum 15 to 20 square metres usable area
- Structurally sound with no major leaks
- Minimum 4 hours direct sunlight daily
- Compatible roof material (concrete, metal, or tile)
The Installation Process: 8 Steps
Step 1: Free Site Assessment (Day 1 to 3)
A qualified engineer visits to evaluate roof area, orientation, shading, structural integrity, electrical capacity, and your energy consumption. Sunollo's assessments are completely free with no obligation and include satellite imagery and on-site measurements.
Step 2: System Design and Quotation (Day 3 to 10)
Your installer designs a system tailored to your roof. You receive a detailed proposal with panel layout, equipment specifications, production estimates, financial projections, and fully itemised pricing. Sunollo's pricing is S$1,000 to S$1,200 per kWp, including Tier-1 panels, optimisers, SunolloCare, and insurance.
Step 3: Contract and Deposit (Week 2)
Sign a contract specifying all equipment, pricing, warranty terms, and timeline. Deposit is typically 10 to 30% of system cost, or S$0 for Sunollo's subscription plan.
Step 4: Permits and Approvals (Week 2 to 5)
EMA Generation Licence
Required for all grid-connected solar. Processing: 2 to 4 weeks. No fee for residential systems.
SP Services Meter Application
Bi-directional meter for the NER scheme. Parallel processing: 2 to 3 weeks. Free for residential.
BCA Structural Notification
PE certification if needed. Adds 1 to 2 weeks. Usually included in installer quote.
MCST Approval (Strata Properties Only)
Best case: 2 to 3 weeks via circular resolution. Typical: 4 to 8 weeks. Worst case: 2 to 3 months for EGM.
Step 5: Pre-Installation Preparation (Week 4 to 5)
Equipment procurement, switchboard assessment, scaffolding if needed, and crew scheduling.
Step 6: Physical Installation (1 to 2 Days)
Morning: Roof Work
- Safety setup and scaffolding
- Mounting rail installation with waterproofing
- Panel mounting and DC wiring
Afternoon: Electrical Work
- Inverter and optimiser system installation
- AC wiring to switchboard
- Monitoring hardware configuration
- Safety testing and earthing
Sunollo installs panel-level optimisers as standard, ensuring each panel operates at maximum efficiency regardless of partial shading. This is a significant advantage over string-only installations where one shaded panel reduces the output of the entire string.
Step 7: Inspection and Commissioning (Week 6 to 7)
Quality inspection, SP Services inspection, meter exchange, and EMA licence activation. Your installer coordinates everything.
Step 8: System Activation and Handover (Week 7 to 8)
System goes live, monitoring app walkthrough, documentation handover, and SunolloCare activation for Sunollo customers (25-year coverage including maintenance, monitoring, insurance, and performance guarantee).
Installation Timeline Summary
| Phase | Duration | Your Involvement |
|---|---|---|
| Site assessment | 1 to 3 days | 1-hour visit |
| Design and quote | 5 to 10 business days | Review and approve |
| Contract | 1 to 3 days | Sign and deposit |
| Permits | 2 to 4 weeks | Sign forms |
| Installation | 1 to 2 days | Be home |
| Inspection | 1 to 2 weeks | SP visit (30 min) |
| Activation | Same day | App walkthrough |
| Total | 4 to 8 weeks | Minimal |
Installation Cost Breakdown
Sunollo's pricing of S$1,000 to S$1,200 per kWp is fully inclusive. Here is how a typical 10 kWp system cost breaks down:
| Component | Percentage | Approximate Cost |
|---|---|---|
| Solar panels (Tier-1 N-type) | 40 to 45% | S$4,000 to S$5,400 |
| Optimisers | 10 to 12% | S$1,000 to S$1,440 |
| Inverter | 8 to 10% | S$800 to S$1,200 |
| Mounting system | 8 to 10% | S$800 to S$1,200 |
| Electrical and wiring | 5 to 8% | S$500 to S$960 |
| Installation labour | 12 to 15% | S$1,200 to S$1,800 |
| Permits and approvals | 3 to 5% | S$300 to S$600 |
| SunolloCare + monitoring + insurance | 5 to 8% | S$500 to S$960 |
| Total (10 kWp) | 100% | S$10,000 to S$12,000 |
With Sunollo's worry-free plan, installation is S$0 upfront with a fixed monthly subscription.
Adding a Battery During Installation
The most cost-effective time to add battery storage is during the initial solar installation. Adding a battery at the same time saves 30 to 40% on installation costs versus retrofitting later because the electrical work, inverter configuration, and permits are already being done.
Sunollo offers batteries from S$5,000 to S$12,000 for standard homes (5 to 15 kWh), covering brands including Tesla Powerwall, BYD, Huawei LUNA2000, and Sigenergy. All batteries are covered under SunolloCare insurance. See our battery guide for detailed comparisons.
Roof Types and Mounting
| Roof Type | Mounting Method | Advantages |
|---|---|---|
| Concrete flat | Tilt-mounted frames | Optimal angle achievable |
| Metal (standing seam) | Non-penetrating clamps | Zero penetrations |
| Metal (corrugated) | Self-drilling with EPDM | Strong attachment |
| Tile (concrete/clay) | Tile hooks | Minimal visible hardware |
Common Concerns Answered
Will solar panels damage my roof?
Not with professional installation. Sunollo guarantees against roof leaks for the full 25-year SunolloCare period, backed by insurance.
How heavy are solar panels?
12 to 15 kg per square metre including mounting — well within Singapore homes' structural capacity of 150 kg per square metre.
Can I install solar myself?
No. Singapore regulations require licensed electrical workers. DIY is illegal and dangerous.
Frequently Asked Questions
How long does installation take?
Physical installation: 1 to 2 days. Total process including permits: 4 to 8 weeks.
What permits are needed?
EMA generation licence (2 to 4 weeks), SP Services meter (2 to 3 weeks), and BCA notification if required. All handled by your installer.
How much does installation cost?
S$1,000 to S$1,200 per kWp fully installed through Sunollo. A 10 kWp system costs S$10,000 to S$12,000 including panels, optimisers, SunolloCare, and insurance. S$0 upfront option available.
What maintenance is needed?
Panel cleaning every 3 to 4 months and annual inverter check. With SunolloCare, all maintenance is handled for 25 years.
Can I add a battery later?
Yes, if your inverter is hybrid (battery-ready). Sunollo recommends hybrid inverters as standard for future-proofing. Battery options range from S$5,000 to S$12,000.
Start Your Solar Installation
Book a free site assessment with Sunollo. Our engineers will evaluate your roof, design an optimal system with optimisers, and provide transparent pricing at S$1,000 to S$1,200 per kWp — including SunolloCare and insurance.
