At the time, it was the first Archimedes screw hydropower plant in the world; the largest hydro installation in the UK; and the first on the River Thames. Using the power of the water rushing through the weir, the completed scheme was expected to generate renewable electricity to power up to 400 homes.
This exciting project was, therefore, very much a pathfinder. With no previous methodology to refer to, the Jackson team worked alongside its supply chain partners to overcome emerging issues and install the turbines successfully.
The project followed extensive repairs to the 50 year-old weir, undertaken by Jackson on behalf of the Environment Agency. The structure then had to be modified – two gates were removed and the weir walls were altered to ensure the two giant turbines and the troughs they sit in could be installed.
The weir is located on a small island, so all plant and materials were transported to the site via river. A particular challenge was the delicate installation of the heavy 20-tonne turbines and Jackson worked closely with its partners to plan the lift using cranes on floating pontoons.