WasteWatt Power Technologies

WasteWatt creates renewable energy by transforming food waste into fluorescent dyes for low-cost, off-grid, solar windows.

Long description

Wastewatt Technologies’ luminescent solar window technology offers a breakthrough solution to sustainably generate renewable energy in Tanzania using abundant local natural resources. By harnessing fluorescent dyes extracted from over 204,000 tons of annual Tanzanian food waste like fruits and vegetables using our patented low-temperature extraction process, our transparent windows absorb 40% more solar energy across Ultraviolet (UV) to Near-Infrared (NIR) wavelengths than conventional windows. The extracted dyes re-emit visible light with up to 90% quantum efficiency, illuminating indoor spaces while directing 30% more photons toward strategically positioned perovskite solar cells with 15% higher power conversion rates along the window edges. Comprehensive LCA studies indicate our windows can reduce embodied carbon emissions by 3 tons per year compared to traditional glazing for buildings in Tanzania, offering a circular economy approach to energy access, lighting, and sustainable waste management applicable in the local context.