Regan Brown
Singapore has been taking steps to reduce its reliance on fossil fuels and transition to more sustainable energy sources. The country has implemented various strategies, such as the Carbon Pricing Act, to reduce carbon emissions and encourage the use of cleaner fuel sources. With power generation contributing to about 40% of Singapore's carbon emissions, the country is exploring alternative energy sources such as solar power, regional power grids, and low-carbon technologies. While solar power is the most viable renewable energy option, land constraints limit its scalability. Nevertheless, Singapore is investing in research and development to improve solar efficiency and space utilization. Additionally, Singapore is studying emerging low-carbon technologies like hydrogen, carbon capture utilization and storage (CCUS), and advanced geothermal systems. The country is also exploring nuclear energy options and collaborating internationally on clean energy initiatives. Singapore's efforts reflect its commitment to balancing environmental sustainability, energy reliability, and affordability.
| Characteristics | Values |
|---|---|
| Current energy sources | Natural gas (95%), waste (4%) |
| 2021 energy sources | Natural gas (93.9%), oil (1%) |
| 2022 energy sources | Natural gas (92%) |
| 2025 projected energy sources | Natural gas (95%) |
| 2030 target for solar deployment | 2 gigawatt-peak (GWp) |
| 2035 target for low-carbon electricity import | 4 GW (30% of Singapore's energy) |
| Carbon emissions from natural gas in 2021 | 22.528 million tonnes |
| Singapore's Grid Emission Factor in 2016 | 0.4237 kgCO2/kWh |
| Singapore's Grid Emission Factor in 2021 | 0.4057 kgCO2/kWh |
| Singapore's share of global GDP | 0.4% |
| Singapore's share of world's merchandise exports | 2.1% |
| Population density | 8,058 persons per km2 |
| Area | 734.3 km2 |
| Strategies to transition to sustainable energy | Carbon Pricing Act, "4 Switches" strategy, Singapore Green Plan |
| Low-carbon technologies under consideration | Hydrogen, carbon capture utilisation and storage (CCUS), advanced geothermal systems, nuclear energy |
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What You'll Learn
Solar power as a viable alternative
Solar power is Singapore's most viable renewable energy alternative. As a tropical country, Singapore has abundant sunlight, with high annual solar irradiation of about 1,580 kWh/m2. This makes solar photovoltaic (PV) a promising option for the country.
Singapore has more than doubled its solar capacity since 2020, with over 700 MWp currently installed. The country aims to increase this capacity to at least 2 GWp by 2030, which is expected to meet around 3% of its projected electricity demand. This target is part of the Singapore Green Plan, which includes initiatives to expand green spaces, phase out new registrations of diesel vehicles by 2025, and significantly expand electric vehicle charging infrastructure.
However, solar energy in Singapore faces several challenges. The country has limited land availability for large-scale solar panel deployment, and the presence of high cloud cover and urban shading pose issues of intermittency. Additionally, solar panels require space, and Singapore's small physical size and high population density constrain their usage.
To overcome these limitations, Singapore is exploring innovative solutions. For instance, a new type of floating solar panel system is being piloted on Jurong Island, designed to withstand strong waves and rough sea conditions. The government is also reviewing long-term strategies for maximizing solar power, actively investing in R&D, and test-bedding to increase efficiency and optimize space utilization.
Singapore is committed to a sustainable energy future and is taking steps to enhance energy efficiency and reduce carbon emissions. The Energy Market Authority (EMA) has introduced strategies such as "'4 Switches'" and "4 Rs," focusing on improving energy efficiency, adopting renewable energy sources, and implementing advanced technologies like carbon capture and storage. The government is also providing funding for research and development to support the transition to renewable energy sources.
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Hydrogen, carbon capture, and storage
Singapore is actively exploring the potential of hydrogen, carbon capture utilisation and storage (CCUS), and advanced geothermal systems to decarbonise its power sector. The country has committed S$55 million to 12 research, development, and demonstration projects on low-carbon hydrogen and CCUS, with an additional S$129 million set aside for future initiatives.
Low-carbon hydrogen has emerged as a critical decarbonisation pathway for Singapore, and the country is preparing for its deployment through its National Hydrogen Strategy. This strategy focuses on five key areas: experimenting with advanced hydrogen technologies, investing in research and development, building hydrogen supply chains, developing hydrogen infrastructure, and fostering international collaboration.
CCUS has been recognised as a promising method for reducing carbon emissions, particularly in sectors heavily reliant on fossil fuels, such as transportation and energy and chemicals (E&C). Singapore's Long-Term Low-Emission Development Strategy (submitted in 2020) emphasised the significance of CCUS in emissions reduction and the need for partnerships to explore CO2 storage opportunities. The country has set ambitious targets, aiming for 2 million tonnes of carbon capture on Jurong Island by 2030 and over 6 million tonnes of carbon abatement annually by 2050.
To address geographical limitations for carbon storage, Singapore has forged partnerships with companies and nations offering suitable geological formations for CO2 storage beyond its shores. One notable example is the Joint Study Agreement (JSA) signed in 2022 between Chevron Corporation and Mitsui O.S.K. This agreement explores the feasibility of transporting liquified carbon dioxide from Singapore to permanent storage locations offshore Australia.
Singapore's transition to a more sustainable energy future involves a balanced approach to managing the energy trilemma. While the country primarily relies on imported natural gas, it is actively pursuing solar power, regional power grids, and emerging low-carbon alternatives. Solar power, despite being the most viable renewable energy source, faces challenges due to land constraints. Singapore is addressing this by investing in floating solar farms and vertical panel installations to optimise space utilisation.
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Geothermal systems and decarbonisation
Singapore is currently studying emerging low-carbon technologies as possible paths to decarbonising its power sector. The country has awarded S$55 million to support 12 research, development, and demonstration projects on low-carbon hydrogen and carbon capture utilisation and storage (CCUS), with another S$129 million set aside for the next phase of the programme.
One such technology is geothermal energy, which has been identified as a means to decarbonize the energy mix of megacities. Geothermal energy can provide enough power to serve the current and future needs of megacities such as Bogota, Los Angeles, and Jakarta, according to an assessment of the geothermal resource base in each city. The global number of megacities is projected to increase from 33 to 43 by 2030, and their resource management is particularly challenging due to the increase in energy demand, population growth, and climate change. Geothermal energy, as a clean and weather-independent baseload resource, could significantly contribute to energy needs, improved air quality, and the decarbonization of these megacities.
Geothermal district heating (GDH) has the potential to offset fossil fuels used for heating individual, commercial, and industrial buildings. By 2050, up to 17,500 GDH systems could be deployed in population centers along the U.S. Eastern Seaboard, serving 45 million households. Geothermal heat pumps (GHPs) can also be deployed in 28 million U.S. households by 2050, serving close to 25% of the entire U.S. heating and cooling market.
In the context of Singapore, solar power is the most viable renewable energy alternative. However, its scale-up is limited by land constraints. The government is actively investing in R&D and test-bedding to increase efficiency and optimize space utilization, including through the deployment of floating solar farms and vertical panel installations. Singapore has also set a target of at least 2 gigawatt-peak (GWp) by 2030 for solar deployment.
To achieve decarbonization, Singapore can consider the potential of geothermal energy as a clean and flexible energy source, in conjunction with its ongoing efforts to maximize solar power and explore other low-carbon alternatives.
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Nuclear energy and fossil fuels
Singapore is currently exploring emerging low-carbon technologies, such as hydrogen, carbon capture utilisation and storage (CCUS), and advanced geothermal systems, as possible paths to decarbonising its power sector. The country has committed S$129 million to the next phase of its low-carbon hydrogen and CCUS research and development projects.
Singapore's power sector accounts for about 40% of the country's emissions. While solar power is Singapore's most viable renewable energy alternative, its scale-up is limited by the country's lack of land. The government is, therefore, investing in R&D and test-bedding to increase efficiency and optimise space utilisation, including through the deployment of floating solar farms and vertical panel installations.
The use of fossil fuels has been criticised for releasing large amounts of carbon dioxide into the atmosphere, contributing to global warming and the greenhouse effect. The burning of coal and oil also releases sulfur dioxide, causing breathing problems and acid rain. The health consequences of fossil fuel use include acute respiratory illness, aggravated asthma, chronic bronchitis, heart disease, and decreased lung function. Outdoor air pollution from burning fossil fuels causes over 3.5 million deaths worldwide each year.
Nuclear energy production, on the other hand, entails a significantly lower release of pollutants and carbon dioxide. However, nuclear energy is not without its drawbacks. Accidents at nuclear power plants, such as Chernobyl and Fukushima, have resulted in adverse health effects and environmental contamination. Nuclear energy also produces nuclear waste, which is highly radioactive and must be carefully handled, transported, stored, and disposed of to protect human health and the environment.
While nuclear energy has prevented millions of deaths that would have otherwise occurred due to fossil fuel use, the choice between the two energy sources is complex.
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Electric vehicles and solar energy
Singapore is heavily reliant on natural gas for its electricity production, with around 95% of its electricity being produced this way. However, solar energy is Singapore's most viable renewable energy alternative. The country has set ambitious targets to increase its solar photovoltaic (PV) capacity, with a goal of achieving 2 gigawatt-peak (GWp) of solar energy by 2030, which is expected to power around 350,000 households. This is in addition to the deployment of floating solar farms and vertical panel installations to optimise space utilisation.
To further promote the use of renewable energy, the Energy Market Authority (EMA) has implemented the "`4 Switches`" strategy, which includes enhancing energy efficiency, increasing the adoption of renewable energy sources, and integrating advanced technologies such as carbon capture and storage. The government has also provided funding for research and development to support the industry in developing capabilities and exploring promising renewable technologies.
Singapore is also working to improve its energy efficiency, with a target of a 36% improvement by 2030 compared to 2005 levels. This includes implementing energy efficiency standards and introducing labelling for lamps.
Electric vehicles (EVs) are also a key part of Singapore's plan to reduce its environmental impact. The Singapore Green Plan includes initiatives to phase out new registrations of diesel vehicles by 2025 and significantly expand the electric vehicle charging infrastructure. Tesla, for example, has a presence in Singapore, offering electric vehicles and clean energy solutions.
While Singapore faces land constraints in scaling up solar energy, the country is also exploring other low-carbon technologies such as hydrogen, carbon capture utilisation and storage (CCUS), and advanced geothermal systems. The country is also considering nuclear energy as a potential source of electricity, with agreements already signed with the United States for civil nuclear cooperation.
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Frequently asked questions
Singapore has implemented several strategies to transition towards a more sustainable energy model, including the Carbon Pricing Act, which reduces carbon emissions by taxing greenhouse gas emissions, and the "'4 Switches'" strategy, which focuses on enhancing energy efficiency, increasing the adoption of renewable energy sources, and integrating advanced technologies such as carbon capture and storage.
Singapore is a small, low-lying island state with a high population density, which presents challenges in pursuing alternative energy options. The country also has limited land area, relatively flat land, and low wind speeds, making it difficult to harness wind and solar energy effectively. In addition, Singapore's total reliance on external sources for natural gas imports poses significant energy security concerns.
Singapore is studying emerging low-carbon technologies like hydrogen, carbon capture utilisation and storage (CCUS), advanced geothermal systems, and nuclear energy as possible paths to decarbonising its power sector. The country is also investing in research and development to harness the potential of low-carbon technologies, including solar power, and exploring effective international cooperation on clean energy technologies and trade.
Singapore has made significant progress in reducing its carbon intensity and greenhouse gas emissions. The country's Grid Emission Factor, a measure of the carbon intensity of electricity generation, has fallen from 0.4237 kgCO2/kWh in 2016 to 0.4057 kgCO2/kWh in 2021. Singapore is also among the 20 best-performing countries in terms of carbon intensity, reflecting the early actions taken to grow in an environmentally responsible way.
