Although the adoption of rooftop solar panels is crucial for the energy transition, the effectiveness of rooftop photovoltaics (RTPV) still varies worldwide. A collaborative study involving the JRC and global research institutions highlights the significant potential of this technology in achieving net-zero energy buildings across various climates and insulation levels. Particularly effective for low-rise structures in moderate to warm climates, RTPVs can counter extreme climate challenges when combined with energy efficiency measures and innovative technologies, extending to high-rise constructions. By enhancing thermal insulation and leveraging emerging technologies, RTPVs can significantly reduce non-renewable energy consumption and carbon emissions. 

Scaling up RTPV deployment not only offers direct social and environmental benefits but also promotes city decarbonisation and energy independence. This meta-analysis underscores the importance of integrating RTPVs into sustainable urban frameworks for net-zero energy neighbourhoods worldwide.

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