Solar Energy in Singapore: Frequently Asked Questions


Where to buy in Singapore and Malaysia. Where to buy solar panel. Where to buy solar charge controller. Where to buy solar gel battery and lithium battery. Where to buy battery enclosure. Where to buy off grid inverter. Where to buy solar roof mounting bracket. Where to buy solar DC circuit breaker and isolator. Where to buy solar surge protector device SPD. Where to buy solar dc fuse and holder. Where to buy solar pv cable. Where to buy solar dc mc4 connector. Where to buy mc4 crimping tool. Where to buy solar panel pole. Where to buy 12v dc timer.
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Solar Panel

How to Build a Solar System

Parts of an off-grid system:

  • Solar panels
  • Charge controller
  • Batteries
  • Inverter
  • Mounting system
  • Wiring & protection
  • Monitoring system

SM Solar Pte Ltd is a one-stop solar supplier with all accessories to build a complete system.

Highest Efficiency Solar Panel

The highest efficiency solar panel is the Aiko Solar Neostar/Comet Series, achieving 25.0–25.2% efficiency using ABC (All Back Contact) technology. This panel eliminates frontal shading by moving all metal contacts to the back, resulting in a pure black appearance.

Other top performers are:
  • LONGi Solar Hi-MO X10: 24.8% efficiency using HPBC 2.0
  • JinkoSolar Tiger Neo 3.0: 24.8% efficiency using N-type TOPCon
  • Maxeon 7: Up to 24.1% efficiency with excellent heat performance
  • SM Solar solar panels are using the latest grade A monocrystalline 182mm with 14 bus bars

Life Span of Solar Panels

Solar panels can last 25–30 years, often longer, and still able to produce electricity even after and life span specification at a lower efficiency.

Roof Mounting Bracket

Where to buy the roof mounting bracket

SM Solar Pte Ltd is a wholesaler in Singapore and Malaysia for Solar Roof Mount Brackets. Product consist of the following:
  • Solar Alunminum Rail
  • Mid Clamp and End Clamp for 30mm, 35mm and 40mm
  • L-feet
  • Tin Roof Clamp
  • Standing Seamlock Roof clamp
  • Roof Hook
  • Adjustable trapeziod roof bracket

Solar Battery

What is a Lithium Battery

A lithium battery is a type of rechargeable battery that uses lithium-based chemistry to store and release electrical energy. It is widely used because it is lightweight, high-energy, long-lasting, and efficient.

Types of Lithium Battery

1. Lithium-ion (Li-ion)

  • High energy density
  • Common in laptops, phones, and power tools

2. Lithium Iron Phosphate (LiFePO₄ / LFP)

  • Very safe and stable
  • Long lifespan (6,000+ cycles)
  • Widely used in solar energy storage and electric vehicles

3. Lithium Nickel Manganese Cobalt (NMC)

  • High power and energy
  • Used in electric vehicles

4. Lithium Polymer (Li-Po)

  • Thin and flexible
  • Used in drones and RC devices

SM Solar Pte Ltd is selling the Lithium Iron Phosphate LiFePO4 battery for 12.8V, 25.6V, 51.2V, 64V, 76.8V

Solar Battery GEL

Deep-Cycle Solar GEL Batteries (VRLA) Our SM Solar GEL battery range is specifically engineered for long-term reliability in renewable energy systems. Unlike standard lead-acid batteries, our GEL technology uses a nanosilica colloidal electrolyte, making them completely leak-proof and maintenance-free.

1. Superior Cycle Life:

  • Optimized for deep-cycle discharge with over 1,500 cycles at 30% DOD.

2. Extreme Heat Tolerance:

  • Very safe and stable
  • Designed to perform in high ambient temperatures (up to 60°C), making them perfect for the Singapore climate.

3. Low Self-Discharge:

  • High-purity lead-calcium grids allow for a shelf life of up to 6 months without a refresh charge.

4. Robust Construction:

  • Housed in flame-retardant ABS (UL94-V0) for maximum safety in industrial and residential solar setups.

5. Wide Range of Sizes:

  • Available in 12V capacities including 20, 33, 45Ah, 50ah, 55ah, 100Ah, and 200Ah.

SCDF 2026 Rule

SCDF 20cm Rule for solar installations

Under the SCDF Fire Code 2023 (Clause 10.2), solar panel installations on metal-roofed buildings can be exempted from the 1-hour fire-rated separation requirement if the panels are installed with a minimum vertical air gap of 200mm (20cm) from the roof surface. This exemption applies if the building has an automatic fire alarm system (SS 645) or if the PV modules are constructed with glass or non-combustible outer layers. This rule helps building owners save up to 30% in construction costs by eliminating heavy fire-rated boards.

What are the access aisle requirements for roof-mounted solar?

  • 1. Clearance: A 3-meter clear space around all roof access hatches and exit doors.
  • 2. Aisles: Maintenance walkways must be at least 1.5m wide.
  • 3. Distance: No part of a solar array can be further than 20m from an access aisle.
  • 4. Perimeter: If an aisle is at the roof edge without a 900mm parapet, the aisle must be widened to 2.5m to prevent falls.

Do I need a Licensed Electrical Worker (LEW) for my solar system?

Yes. In Singapore, all grid-tied solar systems must be designed, endorsed, and turned on by a Licensed Electrical Worker (LEW). This ensures your system complies with SS 638 standards and is safe for both your building and the SP Group power grid.
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