en.Wedoany.com Reported - Wedoany News, During Intersolar Europe 2026, LONGi and OSW Group jointly released the "White Paper on German Rooftop Value Assessment" in Munich, Germany, systematically evaluating the economic potential of residential photovoltaic systems in Germany, and launched the AI digital platform GreenSketch and the digital employee AI Agent Emily.
The white paper indicates that the annual electricity-saving potential of rooftop PV systems on approximately 28 million private homes in Germany reaches €4.544 billion, with residential PV rooftops regarded as a significant yet underutilized energy asset. Research shows that even without government subsidies, residential PV systems in Germany remain economically viable. For a typical household, maximizing self-consumption combined with an energy storage system results in a static payback period of approximately 9.4 years and an internal rate of return of 10.5%. Bavaria and Baden-Württemberg lead the country in return on investment due to advantages in solar resources and rooftop structures.
To translate assessment results into practical applications, LONGi and OSW simultaneously launched the AI digital platform GreenSketch and introduced the digital employee Emily. After users input a postal code, Emily can generate high-precision 3D building models within minutes based on satellite imagery, automatically analyzing roof slope, shading, and meteorological data to output detailed GIS reports. The platform integrates performance parameters of efficient modules such as LONGi EcoLife, ensuring consistency between revenue forecasts and actual power generation performance.
The release of the white paper and the launch of the GreenSketch platform represent a significant step for LONGi in advancing digital energy solutions in the German market. By lowering the barrier to professional services through AI technology, LONGi is working with partners to drive the transformation of residential PV resources in Germany into an efficient, transparent, and sustainable green energy system.
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