Power lilies – A firm called ZM architecture has harnessed solar power in an aesthetically pleasing way. They have designed giant solar water lilies covered in solar panels. The lilies range from 15 to 45 feet in diameter and are made of recycled steel and rubber. The solar panels are motorized to track the best angle of the sun to attain maximum exposure. The city of Glasgow in Scotland has considered placing these lilies on the Clyde River. The energy from the lilies can be transferred to the city’s grid and help offset electrical bills.

http://www.zmarchitecture.co.uk/index.php?id=232