As the demand for sustainable energy continues to grow, many organisations are turning to Renewable Energy Certificates (RECs) to showcase their commitment to green practices. In Singapore, RECs offer a verified way to prove that electricity is generated from a renewable source. These certificates are issued based on the guidelines outlined in SS 673, the national standard that governs eligibility for RECs.
This article explores the seven key renewable technologies that qualify under the SS 673 framework for a Singapore REC. Whether you’re a business planning to reduce your carbon footprint or a project developer aiming to meet sustainability standards, understanding these eligible technologies is essential.
1. Solar Energy
Solar energy is the most commonly used renewable source in Singapore. It involves using solar photovoltaic (PV) systems to convert sunlight into electricity. Given Singapore’s high solar potential and limited land space, rooftop and floating solar installations have become increasingly popular.
To qualify for a Singapore REC, solar projects must meet SS 673 requirements for proper metering, accurate monitoring, and reliable data recording.
2. Biomass Energy
Biomass energy is generated from organic materials such as wood, agricultural residues, and certain types of biodegradable waste. It is considered renewable when the fuel is sustainably sourced and properly managed.
The International REC Standard Foundation explains that traceability of biomass fuel is key for project approval. SS 673 ensures that Singapore REC projects using biomass meet clear sustainability and emissions standards.
3. Hydropower
Hydropower uses the movement of water—often from rivers or dams—to generate electricity. While Singapore’s geography limits large-scale hydro projects, regional sources may still qualify.
For a hydropower project to be eligible for a Singapore REC, it must demonstrate minimal impact on aquatic ecosystems and comply with SS 673 requirements for sustainability and data integrity.
4. Biogas
Biogas is created through the breakdown of organic waste in a process called anaerobic digestion. The resulting methane gas can then be used to generate power.
Projects that wish to qualify for a Singapore REC must show that their systems include proper gas capture and combustion, with full documentation of the waste type, volume, and emissions control.
5. Geothermal Energy
Geothermal energy taps into heat stored beneath the Earth’s surface. Although Singapore does not currently have active geothermal projects, regional developments may qualify if they meet eligibility rules.
As the Energy Market Authority (EMA) highlights, geothermal projects must use reliable monitoring tools and operate sustainably to meet the SS 673 standard for a Singapore REC.
6. Landfill Gas
Landfill gas is produced when waste in landfills decomposes and releases methane, a greenhouse gas. By capturing this gas and using it to generate power, projects help reduce emissions and produce renewable energy.
To earn a Singapore REC, landfill gas projects must meet SS 673 standards for gas flow measurement and combustion, ensuring environmental safety and accountability.
7. Wind Energy
Wind energy harnesses the natural movement of air using wind turbines. While Singapore’s limited land space presents challenges, offshore and regional wind projects are being explored.
Projects applying for a Singapore REC must meet requirements for grid integration, consistent monitoring, and energy tracking under SS 673.
Why REC Eligibility Matters
A Singapore REC offers more than just recognition—it serves as verified proof that a project generates clean, renewable energy. By meeting the SS 673 standard, energy producers and businesses can build trust and transparency in their sustainability claims, while supporting Singapore’s broader climate goals.
How Asiarecs Supports Your Singapore REC Journey
At Asiarecs, we are dedicated to helping companies across Asia access and benefit from the Singapore REC market. Whether you’re building a solar farm, running a biogas plant, or investing in wind energy, we provide full support throughout the REC lifecycle—from registration and verification to issuance and trading.
Our experienced team ensures your renewable project is fully compliant with SS 673. We assist with everything from documentation and metering to platform integration and verification, giving you peace of mind that your green credentials are legitimate and traceable.
Let us help you take the next step in your sustainability journey with trusted, high-quality Singapore RECs by contacting us today.

