Daily
Mail: The UK's Windsor Castle is going green: Yesterday two
40-ton turbines were lifted into the River Thames. Once
installed, they are expected to churn out 300 kW of energy
every hour—enough to provide about half the
estate’s electricity needs. Resembling giant steel
screws, the turbines are based on a 2000-year-old design by
Greek mathematician and engineer Archimedes. The project could
help further the UK's goal of obtaining 15% of its energy from
renewable sources by 2020. As part of the installation a new
fish pass is being installed, which will facilitate the
migration of 12 species around the turbines and through that
stretch of the river.
