Sembcorp UK will boost capacity at Wilton Power Station by 52MW. The firm is to invest £20 million in a Siemens SST400 steam turbine generator.

Expected to be fully operational by mid 2011, the new generator will also improve the plant's efficiency.

Sembcorp sees the investment as "a major step forward at a difficult time as we seek to overcome the unforeseen loss of a number of high steam demand chemical customers at the Wilton site".