Singapore is projected to reach around 5.3 GW of installed solar capacity by 2035, driven by steady annual additions of 300–400 MW. The consultancy estimates that cumulative solar capacity will rise from about 1.9 GW in 2025 to more than 3.2 GW by the end of the decade, exceeding the country’s 2 GW target under the Singapore Green Plan 2030.
Growth is expected to continue through the early 2030s, with solar capacity surpassing 4 GW in 2031 and crossing the 5 GW mark by 2034. Overall, Singapore’s solar sector is forecast to grow at a compound annual growth rate of around 11.7 percent between 2024 and 2035. Deployment is being supported by a mix of rooftop, floating, and utility-scale projects, alongside government policies that promote solar integration in dense urban and industrial settings.
While solar remains the cornerstone of domestic renewable energy expansion, Singapore’s power system will continue to rely heavily on natural gas, which currently accounts for about 95 percent of electricity generation. Gas-based capacity is expected to increase in parallel to support grid reliability. The country is also advancing cross-border low-carbon electricity imports and regional clean energy cooperation, complementing domestic solar growth and strengthening long-term energy security.