Delivery Authority, which would oversee the construction of venues and see that the games are lived out past 2012. Other details A tri-generation plant to supply electricity, heat and chilled water to the Olympic Park using technology which produces 33% lower CO2 emissions than from the electricity grid. By 2012, it was estimated that over 135,000 hotel rooms would be available within 50 kilometres of the Olympic Park, up from 103,000 at the time of the bid. 40,330 rooms had been guaranteed at the time of the bid. For the first time in any Games, live Olympic backdrop presentation facilities would be available to broadcast rights holders via rooftop studios on the main press centre with a direct view of the Olympic Stadium and Park. The torch relay would highlight the "Olympic Truce" by passing through the countries of Nobel Peace Prize winners. Following criticism of the International Torch relay in advance of the 2008 Beijing Summer Games, this was re-designed to be a UK-wide 70-day, 8000-mile torch relay with a brief excursion to Dublin, Ireland. The first chairman of the London Olympic Bid was airline executive Barbara Cassani. Charles Allen, Lord Coe and Alan Pascoe were appointed Vice Chairmen in September 2003. Cassani guided the group through the first submission to the IOC, but stepped down in May 2004 in favour of Lord Coe. Coe, himself an Olympic gold medal-winning athlete and former Conservative politician, enlisted the support of many current and former British Olympians, including Kelly Holmes, Steve Redgrave, and Daley Thompson. Planned legacy of the Games The organising committee paid special attention to the after effects of the games on London, and what they could do to make sure the games left a lasting impression on London and the world. The LOCOG planned out the uses of important stadiums and transportation systems after the games, as well as the social factors of the 2012 legacy. One of the most prominent of the proposed legacy is the conversion of the Olympic Village into 3,600 apartments, most of which will be affordable housing. Most of Stratford City will be regenerated with the construction of 500,000 more square metres of space. The committee outlined plans to donate the sports equipment used in the Games to sports clubs and charities in the United Kingdom. Sports venues One of the priorities governing the contents of London's bid was to avoid leaving "white