A building in Kaufbeuren, Germany, is the first to receive Passive House Premium certification. The House of Energy is one of the world’s most sustainable buildings. It has an annual heating demand of only 8 kWh / sq m (0.7 kWh / sq ft) and a 250 sq m (2,691 sq ft) photovoltaic system on the roof.
In a bid to reduce the visual impact of a modern family home located within a conservation area in London, local architecture firm DSDHA sunk half of the residence into the ground and covered much of the rest with glass and mirrors. The result is a partially camouflaged building suitably named Covert House, which also boasts sustainable features that include rainwater collection and solar panels.