WATTI is a public-data-based building energy renovation platform which assess buildings’ energy efficiency levels with just one click and also gives users some feasible energy renovation scenarios.

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WATTI builds an energy dynamics model of each building in the city based on public data(GIS, building registers, etc.) and a building energy simulation tool. So there is no need to install some hardware devices or for assessors to visit the actual site to draw a draft of renovation scenarios. Also, WATTI has a map-like user interface, so even if the users don’t have any professional background, they just need to search for their building on the map to check the current efficiency level and feasible renovation scenarios.