*project for sustainable development* People living in remote regions have trouble accessing electric power and water grids and yet have energy and water needs for their daily existence. LFree is hybridizing old and innovative technologies, using solar energy to recycle wastewater and produce electricity and drinking water. It provides ability to keep a continuous and constant power production and to overcome the vagaries of weather in terms of renewable energy. LFree stores electricity excess produced during day for night use or shares it over a smart grid. Its size, autonomy, robustness and simplicity make it an environmental-friendly technology cleaning wastewater from persistent toxic substances while reducing greenhouse gases emissions. LFree offers a permanent solution to local sustainable and economic development through circular economy. It reduces carbon footprint by reducing production of greenhouse gases.