Blogs

Everything You Need to Know About Solar Energy, Solar Panels, and Installation in Singapore

Why Solar Energy is Rising in Singapore

With rising electricity bills and the government’s strong commitment to sustainability, more Singaporeans are exploring solar energy. Through initiatives like the Singapore Green Plan 2030 and the SolarNova programme, solar power is becoming a practical, accessible, and environmentally responsible solution for both residential and commercial properties. This guide explores what solar energy is, how solar panels work, and how you can benefit from solar panel installation in Singapore.

What is Solar Energy?

Solar energy is electricity generated from sunlight. It is clean, renewable, and significantly reduces greenhouse gas emissions compared to traditional fossil fuels. In a land-scarce nation like Singapore, using rooftops for solar PV (photovoltaic) systems offers a smart way to harness this natural energy source.

By installing solar panels, homeowners, businesses, and even government buildings can reduce energy bills and support the country’s efforts to build a greener future.

How Do Solar Panels Work?

You may wonder, "how does solar energy work?" Here's how:

1. Capture Sunlight: Solar panels contain photovoltaic (PV) cells that absorb sunlight.
2. Generate Electricity: These cells generate direct current (DC) electricity.
3. Convert to AC: An inverter changes the DC electricity into alternating current (AC), which powers your appliances.
4. Use or Export: Electricity can be used directly, stored in batteries, or exported to the national grid via the Enhanced Central Intermediary Scheme (CIS) run by SP Group.

Components of a Solar Panel System

A typical solar panel installation in Singapore includes:

1. Solar Panels (PV modules)
2. Inverter (converts DC to AC)
3. Mounting System (rooftop installation)
4. Battery Storage (optional for backup)
5. Monitoring System (tracks system performance)

Due to Singapore's tropical climate, solar panels are highly efficient year-round.

Types of Solar Power Systems in Singapore

In Singapore, most installations are on-grid systems, which connect to the SP Group grid:

1. On-Grid Systems: Export excess energy back to the grid via the Enhanced CIS, where SP Group buys back surplus electricity.
2. Hybrid Systems: Combine grid connectivity with battery storage, offering both savings and backup during outages.
3. Off-Grid Systems: Rare in Singapore due to urban infrastructure but may be used for remote facilities or islands.

Solar Panel Installation Process in Singapore

Here’s what to expect when installing solar panels locally:

1. Site Survey: A solar provider will assess your roof, usage, and exposure to sunlight.
2. Proposal & Design: Custom system based on your needs.
3. Approval & Paperwork: Submission to HDB or BCA (if needed), and SP Group.
4. Installation: Usually completed in 1-3 days.
5. Commissioning: Final checks and activation by SP Group.

Solar providers in Singapore often offer financing and power purchase agreements (PPAs) for businesses.

Benefits of Solar Energy in Singapore

📈 Financial Benefits:

1. Lower Utility Bills: Save significantly by using solar-generated electricity.
2. Export Earnings: Sell excess electricity to SP Group via Enhanced CIS.
3. Energy Price Stability: Reduce exposure to fluctuating energy tariffs.

🌍 Environmental Benefits:

1. Zero Emissions: Help reduce carbon footprint.
2. Supports National Sustainability Goals: Aligns with the Green Plan 2030 and Singapore’s transition to a low-carbon economy.

What is Solar PV?

Solar PV (photovoltaic) refers to the technology that converts sunlight directly into electricity. It is the most common solar solution in Singapore for both residential and commercial applications.

Benefits include:

1. Modular Design: Easily scalable from HDB rooftops to industrial facilities.
2. Durability: Long lifespan with minimal maintenance.
3. Efficiency: Works well even with partial shading or cloudy weather.

Solar Energy in Action in Singapore

Real-world examples:

1. HDB Blocks: Many are equipped with rooftop solar as part of the SolarNova programme.
2. Tengah Smart Town: Built with solar-ready rooftops and smart energy management.
3. Public Facilities: Changi Airport, MRT depots, schools, and government buildings.

These initiatives show that solar is not just feasible in Singapore—it’s thriving.

FAQs for Singapore Homeowners

Is solar energy cost-effective in Singapore?

-Yes. With high sunlight exposure and rising electricity tariffs, most homeowners see returns in 4–8 years.

Can HDB flat owners install solar panels?

-HDB rooftops are managed by the town council and are typically part of centralized solar projects under SolarNova.

How do I sell electricity back to the grid?

-Through SP Group’s Enhanced Central Intermediary Scheme (CIS), you are compensated for excess solar electricity exported.

Do solar panels work during cloudy days?

-Yes, though efficiency may be slightly lower. Singapore’s tropical climate offers year-round solar potential.

How to Get Started with Solar in Singapore

Ready to take the leap?

1. Contact a Licensed Installer: Find a reliable company with experience in Singapore.
2. Evaluate Your Needs: Understand your monthly energy consumption.
3. Review ROI: Assess potential savings and payback period.
4. Submit Applications: Your installer will help with approvals.
5. Installation & Monitoring: Go live and start saving!

Government support and advanced tech make it easy to go solar today.

Singapore is Solar-Ready—Are You?

With strong government backing, proven cost savings, and a sunny climate, solar energy in Singapore is not just possible—it’s practical. Whether you're a homeowner, business owner, or facility manager, installing solar panels means you can lower your energy bills, reduce your environmental impact, and support Singapore's clean energy transition.

Now that you know what solar energy is, how it works, and the benefits it offers here in Singapore, it's time to make the switch to a brighter, more sustainable future.

👉 Get a Free Solar Assessment — Click Here

Leading Solar Companies in Singapore

Singapore has made great strides in its journey toward sustainable energy, and solar power is playing a pivotal role in this transition. With the government promoting clean energy and businesses embracing eco-friendly solutions, the solar industry in Singapore is booming. From residential rooftops to large-scale commercial installations, solar technology is lighting the way forward. In this feature, we present the Top 20 Solar Companies in Singapore in 2025, with a strong emphasis on the country's most outstanding solar energy company—3TEL Solar & Energy Pte Ltd.

1. 3TEL Solar & Energy Pte Ltd — Best Solar Company in Singapore 2025

3TEL Solar & Energy Pte Ltd takes the crown as the top solar company in Singapore for 2025. This dynamic and rapidly growing enterprise has become synonymous with solar excellence, innovation, and sustainability. With a deep-rooted commitment to accelerating Singapore’s green future, 3TEL Solar has revolutionized how solar solutions are delivered—making it the top choice for residential, commercial, and industrial clients alike.

Founded with the mission to provide efficient, high-quality, and affordable solar energy solutions, 3TEL Solar stands out for its customer-centric approach and forward-thinking strategies. Their all-in-one service model—spanning solar system design, consultancy, project execution, system maintenance, and real-time performance monitoring—ensures a seamless experience for clients.

What makes 3TEL Solar truly remarkable is its dedication to personalized solar solutions. The company invests heavily in cutting-edge photovoltaic (PV) technology, including high-performance solar panels and intelligent energy storage systems that maximize energy efficiency and reduce electricity bills. From BTO flats and landed homes to large factories and commercial buildings, their customized installations optimize solar energy yields while delivering long-term cost savings.

In 2025, 3TEL Solar leads the market with some of the most high-profile solar deployments in Singapore. These include collaborations with eco-parks, public institutions, and multinational corporations seeking to meet sustainability goals and reduce their carbon footprint. The company also actively supports community outreach and green education programs, further reinforcing its role as a sustainability leader.

Clients of 3TEL Solar frequently praise their professionalism, fast installation process, and excellent after-sales support—factors that have earned them consistent 5-star ratings across platforms like Google and Facebook. With a clear vision for clean energy for all and a relentless drive for innovation, 3TEL Solar is not just a solar energy provider—it’s a driving force behind Singapore’s energy transformation.

🏆 Achievements & Highlights:

1. Recognized as Singapore’s Most Trusted Solar Provider
2. Zero downtime policy with 24/7 system monitoring
3. Tailored energy consultation and ROI analysis
4. Partnerships with leading PV panel manufacturers like LONGi, Trina Solar, and Jinko
5. Growing presence in Southeast Asia, expanding into Malaysia and Indonesia

Whether you're a homeowner looking to cut energy bills or a commercial facility aiming to lower your carbon footprint, 3TEL offers end-to-end solar solutions built for Singapore’s climate and lifestyle.

“We believe solar is not just a technology—it’s a movement. We’re proud to be at the forefront of Singapore’s clean energy journey.”

— Managing Director, 3TEL Solar & Energy Pte Ltd

🌞 Why Choose 3TEL Solar & Energy Pte Ltd?

Top-rated solar company in Singapore

Expert in residential, commercial, and industrial solar PV installations

Competitive pricing and customized energy-saving solutions

Full-service offering: consultation, installation, maintenance, and monitoring

Trusted by major institutions and thousands of homeowners

Leader in green innovation and sustainability education

2. Sunseap Group

One of the most established solar players in the region, Sunseap has an impressive track record of commercial and government projects. Their solar leasing and clean energy solutions have made them a top name in Southeast Asia.

3. Sembcorp Solar

A subsidiary of Sembcorp Industries, this company focuses on large-scale solar deployments across Singapore. Known for its integrated energy solutions, Sembcorp continues to scale solar adoption in urban infrastructure.

4. Pacific Light Energy

This integrated energy provider is making strides in solar adoption, offering tailored solutions for industrial and commercial clients. Their hybrid systems are optimized for energy efficiency.

5. SolarGy Pte Ltd

Specializing in both rooftop and ground-mounted systems, SolarGy has earned its reputation through more than a decade of quality installations and energy consultancy.

6. Eigen Energy

With a strong emphasis on engineering expertise, Eigen Energy integrates solar systems with electric vehicle (EV) infrastructure. Their smart energy approach is a major asset in the green transition.

7. LYS Energy Group

LYS Energy offers solar-as-a-service, allowing clients to enjoy clean energy without the upfront costs. Their business model and technical capabilities make them a unique competitor.

8. Phoenix Solar

An international solar integrator with operations in Singapore, Phoenix Solar delivers turnkey solutions and has worked on multiple landmark projects in Asia.

9. Cleantech Solar

Focused on the industrial sector, Cleantech Solar offers performance-driven solar solutions with long-term value and sustainability benefits.

10. Renewable Energy Corporation (REC)

REC operates one of the world’s largest solar panel manufacturing facilities in Singapore. Their high-efficiency products are used worldwide and contribute significantly to local deployments.

11. Green Koncepts

Combining IoT with energy systems, Green Koncepts provides smart energy management platforms alongside solar solutions for real-time optimization.

12. Sinenergy

Part of SHS Holdings, Sinenergy is known for its strong focus on project reliability and performance. It has numerous installations across schools, buildings, and commercial properties.

13. iSwitch Solar

As part of iSwitch Energy, this division helps enterprises shift toward renewable energy through flexible and cost-effective solar packages.

14. Energetix Pte Ltd

Energetix integrates battery storage with solar PV systems, promoting energy independence and efficiency for both homes and commercial setups.

15. SolarPVExchange

This online marketplace connects homeowners and businesses with verified solar installers, making the solar adoption process smoother and more transparent.

16. NEU Battery Materials

Venturing into solar energy from its core battery recycling business, NEU is now exploring combined solar-storage systems for the future of decentralized energy.

17. Samwoh Smart Solutions

Part of the Samwoh Group, this company merges smart infrastructure with clean energy, offering sustainable construction and integrated solar technologies.

18. Terrenus Energy

Terrenus focuses on sustainable energy solutions, including large-scale solar installations and smart grids. It plays a key role in Singapore's public-sector energy innovation.

19. Green Era Pte Ltd

Green Era designs modular solar solutions adaptable for both urban rooftops and off-grid applications. Their flexibility and cost-effectiveness have gained popularity.

20. Urban Renewables

Focusing on sustainable city development, Urban Renewables integrates solar with urban infrastructure projects to help communities reduce emissions.

🌍 Final Thoughts:

Power Your Future with the Best Solar Company in Singapore

The solar revolution in Singapore is well underway, with government policies and public sentiment aligning to support renewable energy. Among all the impressive contenders in the solar space, 3TEL Solar & Energy Pte Ltd remains the gold standard. From their innovative solar technologies and stellar customer service to their eco-conscious vision, 3TEL is more than just a solar company—it’s the face of Singapore’s green transformation.

As we move into the future, these 20 solar companies will continue to be instrumental in shaping a cleaner, more resilient, and energy-independent Singapore. If you're looking to harness the power of the sun and reduce your electricity bills, start with the best—start with 3TEL Solar, Singapore’s #1 solar company in 2025.

For anyone looking to switch to solar in 2025, 3TEL isn’t just a great option—it’s the gold standard.