The Ecocapsule is an egg-shaped, mobile dwelling that utilises solar and wind energy. It was developed by Nice Architects, a firm based in Bratislava, Slovakia. Shaped like an egg to minimise its surface-area-to-volume ratio, its walls are made of two layers of fibreglass with polyurethane foam sandwiched in between. Nice Architects describes the Ecocapsule as a “low-energy house packed into a compact form”, although other potential applications include as a disaster-relief shelter, a scientific research station, and even as a “remote Airbnb
Weighing 1.7 metric tons (1.7 long tons; 1.9 short tons) and measuring 4.7 meters (15 ft) in length by 2.2 meters (7.2 ft) in width by 2.5 meters (8.2 ft) in height, the 86-square-foot (8.0 m2) Ecocapsule is designed to accommodate two occupants. In addition to providing sleeping quarters for two with a folding bed, it also includes a kitchenette, a shower, a fold-out table, working windows, and even storage space. The Ecocapsule’s interior is bathed in natural light and predominantly white in colour with blond wood accents. It is powered primarily by a built-in, 750-watt wind turbine and secondarily by a high-efficiency, solar cell array. In fact It is designed to produce more energy than it consumes, as long as the external temperature remains between −16 °C and 40 °C The dwelling is also equipped with a 9,744-watt-hour (35,080 kJ) battery that can hold four days’ worth of electrical charge. If the battery is charged, the Ecocapsule diverts some of the energy captured by the solar cells to supplement its water heater. Other energy-conservation features of the dwelling are its high-efficiency climate control system and a heat exchanger that uses exhaust air to warm fresh incoming air.