The technology powering Australia's Sydney Opera House | BBC News

It takes a lot of energy to power the Sydney Opera House. At any one time, the famous landmark can have up to 20,000 visitors. The House was recently awarded with the highest six-star performance certification by Green Building Council of Australia. This is how it became a global leader in sustainable practice. Subscribe here: http://bit.ly/1rbfUog For more news, analysis and features visit: www.bbc.com/news #Sydney #Technology #BBCNews