Solar Panel Facts and Myths: What Homeowners in Singapore Should Know

As solar adoption grows in Singapore, more homeowners are considering switching to renewable energy. However, as with any growing industry, there is a lot of mixed information being shared online and through word-of-mouth.

Some of it is accurate, but many of the common beliefs about solar are outdated or simply untrue.

In this article, we break down the most common solar myths and explain the facts, so you can make an informed decision before going solar.

⚙️ Myth #1: Solar Panels Don’t Need Any Maintenance

While solar systems are generally low-maintenance, they are not entirely maintenance-free.

Solar panels sit outdoors throughout the year and naturally collect:

• Dust

• Pollen

• Leaves

• Bird droppings

• Pollution residue

Over time, this can reduce efficiency and impact performance.

So what’s the truth?

Rainwater does wash away light dust, but it doesn't remove everything. For long-term performance and maximum power output, solar systems should undergo professional maintenance every 2–3 years.

Typical maintenance includes:

1. Inverter health check – to ensure the power conversion process is working efficiently

2. Panel inspection – checking for cracks, loose wiring, hot spots, or water ingress

3. Cleaning of panels – using soft brushes and industry-safe cleaning agents

Depending on your system size, maintenance usually costs $300–$500.

A small investment in regular care keeps your system running efficiently for 25+ years.

⛅ Myth #2: Solar Panels Don’t Work in Cloudy or Rainy Weather

Singapore’s climate tends to make homeowners worry about this the most. High humidity, rainy days, and frequent cloud cover seem like they might reduce solar effectiveness.

The truth is:

Solar panels will continue to generate electricity even on cloudy or rainy days. They only pause production at night when there is no sunlight.

Singapore enjoys stable and predictable daylight conditions year-round, so a properly sized solar system will continue producing clean energy every day.

🏠 Myth #3: Solar Panels Will Damage My Roof

When installed correctly, solar panels do not damage your roof.

Professional solar installers use proper mounting techniques, waterproofing, and structural calculations to ensure your roof stays protected.

A few safety guidelines include:

• Proper mounting rails and equipment

• Correct spacing based on roof material (tile, metal, flat)

• Water-tight sealing and flashings

• Following SCDF/EMA/BCA industry standards

When done right, solar panels can even protect roof surfaces

by covering them and reducing direct sunlight exposure.

The most important factor here is choosing an experienced installer. You can read more here:

👉 The Ultimate Guide to Choosing the Right Solar Contractor for Your Property

🔌 Myth #4: A Bigger Inverter Means Better Performance

This is a common misunderstanding. Many homeowners think installing a larger inverter will allow them to generate more energy.

Here’s the reality:

The inverter size should match the system size. Oversizing the inverter does not give you more power. In fact, it can lead to:

• Higher upfront cost

• Under-performance in real-world operations

Meanwhile, under-sizing the inverter can cause issues such as:

• Unexpected shutdowns

• System inefficiencies

• Risk of electrical faults

Your installer should size your inverter based on:

• Solar panel capacity

• Roof design

• Expected energy consumption

A properly matched inverter ensures efficient DC-to-AC conversion and long-term safety.

💰 Myth #5: Solar Is Too Expensive

This is one of the biggest misconceptions.

Solar is not simply a cost — it is an investment that generates financial returns.

Homeowners save money every month by reducing their electricity bills, and most systems pay for themselves within a few years. After the ROI period, the energy produced is essentially free.

The only time solar becomes expensive is when:

• It is installed without proper design or planning

• There is poor workmanship

• Low-quality equipment is used

• Repairs are needed later

When done right, solar brings:

• Long-term savings

• Increased property value

• Lower carbon footprint

• Reliable, clean energy

✔ The Final Truth

Solar panels are safe, reliable, and cost-effective when designed and installed properly. Don’t let outdated information or myths prevent you from exploring renewable energy for your property.

With the right installer and realistic expectations, solar becomes one of the smartest long-term investments a homeowner can make.

If you’d like personalised advice or want to see if your home is suitable, feel free to reach out—we’re happy to help.