As world leaders gathered for the UN Earth Summit in Johannesburg,
Africa's largest 'green' turbine began generating power for the grid
Technicians from UK turbine
manufacturer Peter Brotherhood completed commissioning the 20 MW
turbo-alternator set which was designed and manufactured by the
company for contractor PMS.
The machine is installed at the sugar
mill in Hippo Valley near Chirezdi, Zimbabwe, owned by Hippo Valley
Estates. It uses steam raised from burning bagasse - the waste
material left after the processing of sugar cane - to generate
electrical power and the exhaust steam is used in the sugar refining
This is an extremely 'green' form of
power generation as all the CO2 released during the combustion of the
bagasse is absorbed again the following year by the growing crop.
Peter Brotherhood won the contract
because of its extensive experience of designing, manufacturing and
installing such machines. The company has more than 500 steam turbines
operating in sugar mills around the world, including more than 100 in
The machine in Hippo Valley is almost
50 per cent bigger than any similar turbine known to be operating in
Africa. As well as supplying electricity for the sugar mill it
provides power to the Zimbabwean grid.