Swettenham Road

Rezeca Renewables installed a 23.92 kWp solar PV system on a tile-roof Good Class Bungalow at Swettenham Road, Singapore, commissioned in 2016. This is one of Rezeca's earliest GCB solar installations — now approaching a decade of continuous operation with the system fully paid off and generating free electricity for the homeowner.

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The complex multi-hip roof presented one of the more challenging residential layouts our engineers have worked with. As the aerial photograph shows, panels are distributed across multiple angled roof faces, carefully positioned around dormer windows, ridge lines, and valleys to capture sunlight from different orientations throughout the day. Rather than maximising every available square metre of roof space, this system was right-sized to match the household's daytime electricity consumption — a deliberate design decision that optimised return on investment while keeping the installation visually balanced across the home's distinctive roofline.

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At 23.92 kWp, the system generates an estimated 29,900 kWh of solar electricity per year — sufficient to power the household during daylight hours, including air conditioning, pool filtration, and general consumption. Surplus energy is exported to the grid under Singapore's grid sell-back scheme.

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With the system now fully paid off after less than six years, this project is a clear example of the long-term financial case for residential solar in Singapore. The homeowner has the option to upgrade to today's higher-efficiency panels — current modules from Trina, Aiko, and Jinko deliver up to 490W per panel at 24.5% cell efficiency, compared to the panels available in 2016. A panel upgrade on an existing mounting structure and inverter system is one of the most cost-effective ways to increase solar output on a landed home without a full reinstallation. Rezeca offers panel upgrade consultations and maintenance services for existing solar systems across Singapore.

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This Swettenham Road property sits within the same GCB enclave as a neighbouring 29.60 kWp installation completed by Rezeca in 2022 — on a standing seam metal roof with a different design approach. Together, these two projects demonstrate how solar systems can be engineered for very different roof types and energy goals within the same Singapore neighbourhood. Other Rezeca GCB projects in nearby enclaves include Leedon Park (40.05 kWp, tile roof) and Cluny Hill (89.25 kWp, metal roof).

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This project is one of over 1,000 residential solar installations completed by Rezeca Renewables across Singapore's landed estates since 2009 — including multiple systems along Swettenham Road alone, each engineered for a different roof type and energy profile: a 23.92 kWp tile-roof system (2016), a 29.60 kWp metal-roof system (2022), and a 12.98 kWp RC-roof system (2018).