This creates heat inside the building and overheating will be countered by five stepped curved shades above the atrium which prevent sunlight overheating the building and stops glare. In winter, louvres atop the double-skin façade are closed to maintain the warm air generated in the building. In summer, the opposite occurs and louvres atop the double-skin façade open and consequently expel hot, rising air from the building to reduce overheating. The building's sustainable cogeneration heat and power plant uses bio-fuel and waste cooking oil. Its computer systems will recycle waste heat. The building has a used water recycling system and rainwater harvesting. Thermal mass materials which have a high density such as concrete are used to control temperature fluctuations. Awards One Angel Square is the only commercial building in the United Kingdom to achieve maximum ratings in energy and sustainability performance by the three main rating systems. It has BREEAM 'Outstanding' accreditation and an A-rated Energy Performance Certificate and Display Energy Certificate. The building has been awarded: Considerate Constructors Scheme – 'Gold' award (2011) - Construction was rated 38.5 out of 40 by the Considerate Constructors Scheme, and achieved perfect scores in five of eight categories. Builder & Engineer Awards (2011) Sustainable Project of the Year Architect of the Year – 3DReid Green Apple Awards (2012) Bronze Award Property Week Awards (2012) Sustainable Achievement Award World Architecture Festival (2012) – shortlist 'Future Project – Office' category BREEAM Awards (2013) Best Office Building MIPIM Awards (2013) Best Office and Business Development – Final four shortlist See also NOMA, Manchester References External links One Angel Square - official website for One Angel Square Creating a new Head Office that is good for everyone - One Angel Square proposal from The Co-operative Group website NOMA53 - official website for the wider development scheme around One Angel Square Buildings and structures in Manchester The Co-operative Group Sustainable buildings and structures