How to Choose a Solar Panel Company in Singapore 2026: What to Look For

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How to Choose a Solar Panel Company in Singapore 2026: What to Look For

▶ Quick Answer: Choosing a solar panel installer in Singapore 2026: always verify EMA (Energy Market Authority) registration at ema.gov.sg before signing. Get minimum 3 quotes comparing panel brand, product warranty (minimum 10 years), performance warranty (25 years at 80% rated output), inverter warranty (minimum 5 years), and whether structural assessment is included. Average 10kWp system costs SGD 14,500 to 22,000. Unusually low quotes under SGD 12,000 for 10kWp warrant scrutiny of panel quality and warranty terms.

Choosing the right solar installer in Singapore — why it matters more than the panels

The solar panel brands available to Singapore consumers are broadly comparable in quality at the same price tier. The significant variable in a solar installation — the thing that determines whether your system performs as quoted over 25 years — is the quality of the installer: their engineering expertise, mounting structure quality, shading analysis accuracy, and after-sales robustness.

A good solar system poorly installed will underperform significantly. A mid-tier system well-installed will typically outperform a premium system badly installed. The installer matters more than the brand.

Step 1 — verify EMA registration

This is non-negotiable and takes 2 minutes. All solar installers working on grid-connected systems in Singapore must be registered with the Energy Market Authority (EMA). Check the EMA register at ema.gov.sg before engaging any installer. You are looking for company registration as an EMA-licensed contractor, and the Licensed Electrical Workers (LEWs) who must legally oversee the electrical connection.

If an installer cannot provide their EMA registration details or becomes evasive about this, stop the conversation. EMA registration is publicly verifiable and legitimate installers provide it immediately on request.

Step 2 — understand exactly what to compare across quotes

Component	What to ask for	Why it matters
Panel brand and model	Specific brand (Jinko, LONGi, Canadian Solar, SunPower), model number, and rated output in watts	Panel quality determines long-term output. Higher efficiency Mono-PERC or Topcon panels (20 to 22% efficiency) cost more but generate more per square metre.
Product warranty (panels)	Minimum 10 to 12 years for manufacturing defects	Below 10 years indicates lower-tier panels.
Performance warranty (panels)	Minimum 25 years at 80% rated output — the industry standard	This guarantees the panel still produces at least 80% of rated output after 25 years. More important than product warranty.
Inverter brand and warranty	Brand name and warranty period (minimum 5 years, ideally 10 to 12)	Inverters fail more often than panels. Warranty period is critical.
Mounting structure material	Aluminium rails with stainless steel fixings for corrosion resistance	Singapore humidity and salt air accelerate corrosion on inferior hardware.
Structural assessment included	Yes or No — and who conducts it	BCA requires structural loading assessment. Must be included. If not, you face liability for structural damage.
EMA and SP Group registration handling	Installer handles all regulatory filings as part of scope	Should include EMA notification and SP Group net metering registration.
Post-installation O&M	Annual maintenance package or clear response guarantee	Panel cleaning every 6 to 12 months is needed in Singapore. Confirm whether included or additional cost.

Step 3 — get 3 quotes and compare properly

The solar installation market in Singapore is competitive enough that getting 3 quotes takes less time than before and yields meaningful price variation. A spread of SGD 2,000 to 4,000 across three quotes for the same system size is normal. Compare on a like-for-like basis: same system size (kWp), same or comparable panel tier, and confirm each quote includes structural assessment, EMA filing, and SP Group registration.

•       Quote too low: a 10kWp system for under SGD 12,000 warrants scrutiny. Ask which panel brand is used and what the 25-year performance warranty terms are.

•       Quote very high: premium brands (SunPower, REC) and enhanced monitoring can justify higher costs. Confirm the specific benefit before paying the premium.

Red flags to avoid

•       Same-day pricing pressure: legitimate solar companies do not use urgency tactics. Any installer saying the price goes up tomorrow is using a sales pressure tactic.

•       No physical site visit before quoting: a proper quote requires a site visit for roof assessment, shading analysis, and structural evaluation. A quote without a site visit is unreliable.

•       Vague post-installation support: ask specifically what happens if the inverter fails in year 7. Vague answers indicate vague support.

•       No LEW supervision: all electrical connections must be carried out by or supervised by a Licensed Electrical Worker. Confirm this is included.

The installation process — what to expect

1.     Site assessment: installer assesses roof orientation, pitch, shading, structural capacity, and electrical panel. Typically 1 to 2 hours.

2.     Quote and agreement: detailed quotation within 1 to 2 weeks. Review warranty terms and post-installation support carefully before signing.

3.     EMA and SP Group pre-approval: installer submits notifications. Typically 2 to 4 weeks.

4.     Installation: most residential installations take 2 to 4 days.

5.     Inspection and commissioning: LEW inspects and signs off. SP Group connects net metering. Monitoring app access provided.

6.     Ongoing: panel cleaning every 6 to 12 months. Inverter monitoring via app.

See our featured partner Stellar Industries for a verified EMA-registered Singapore solar installer.