In brief
Singapore is targeting 4 GWp of solar capacity by 2035, a move that includes expanding deployment sites, encouraging homeowners, and modernising the grid. The Energy Market Authority announced updates to the Solar Photovoltaic Roadmap and a digital portal to streamline installation. These steps aim to optimise Singapore’s limited land while increasing renewable energy penetration.
Singapore announced on Tuesday a strategic push toward a 4‑gigawatt‑peak (GWp) solar power footprint by 2035, marking a significant scaling up of the city‑state’s renewable energy profile. The Energy Market Authority (EMA) outlined a three‑fold approach: identifying new installation sites, fostering residential solar adoption, and upgrading grid infrastructure to manage the expected increase in distributed generation.
The EMA’s Solar Photovoltaic Roadmap, first released in 2020, will now be refreshed to chart medium‑to‑long‑term development pathways across a variety of surfaces, including rooftops, car parks, and under‑investment land that could be repurposed for solar arrays. The updated plan intends to map current and future deployment opportunities, helping planners and developers assess feasibility in a city known for its limited land resources.
A central feature of the plan is a one‑stop digital portal designed for private landed homes. This platform will provide homeowners with comprehensive solar‑related information, connect them with vetted installers, and facilitate group purchasing initiatives that can lower costs and streamline the permitting process. By centralising data and service offerings, the portal seeks to reduce barriers for residents who may otherwise find the adoption process daunting.
Delving into the technical underpinnings, "group purchases" refer to collective procurement of solar equipment and installation services by a cohort of buyers, which can result in economies of scale. Given the high upfront costs and logistics involved in installing photovoltaic systems on residential rooftops, a coordinated approach allows homeowners to share resources, negotiate better prices, and accelerate deployment across entire neighbourhoods.
Grid readiness is another critical pillar of the strategy. The EMA will assess the current electricity network capacity in landed residential estates, identifying potential bottlenecks that could arise when increasing local generation. By understanding how much additional solar power the existing distribution network can absorb without costly upgrades, planners can prioritise transmission improvements where they are most needed, ensuring reliability and preventing curtailment of generated energy.
"With Singapore's land constraints, we need to make the most of every opportunity to harness solar energy," said Puah Kok Keong, chief executive of the EMA.
“By updating our roadmap and implementing supportive digital tools, we aim to elevate solar adoption, streamline infrastructure development, and solidify Singapore's position as a model for renewable transitions in dense urban environments.”
Planning and Identification
The Solar Photovoltaic Roadmap’s update will involve detailed mapping of potential sites, including multi‑storey building rooftops, parking lots, and existing industrial rooftops that could be optimised for solar production. By integrating Geographic Information System (GIS) data with real‑time energy usage statistics, planners can prioritise projects that offer the greatest net benefit to the grid and local communities.
Digital Engagement and Grid Modernisation
The digital portal will leverage API connections with local installer registries, allowing real‑time availability of qualified professionals. It will also incorporate smart‑meter data to predict and manage peaks in solar generation against household consumption patterns. In parallel, the EMA’s grid assessments will focus on inverter compatibility and protective relays, ensuring that distributed solar feed‑ins meet the grid’s operational standards and prevent power quality issues.
With these multi‑layered initiatives, Singapore seeks to make a significant dent in its carbon emissions by expanding photovoltaic generation, while demonstrating how high‑density urban economies can achieve renewable targets through combined planning, technology, and citizen engagement.
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