BRUSSELS, April 19, 2013 (RISI) - The RWE Innogy subsidiary RWE npower renewables has started commissioning of the biomass boiler at the newly built combined heat and power (CHP) plant located at the site of specialty paper maker Tullis Russell in Markinch, Scotland. The plant is expected to be fully operational by October this year.
The £200 million ($307 million) CHP plant has a capacity of 49.9 MW of electricity and 120 tonnes of process steam per hour. It will cover Tullis Russel's entire energy requirements, with the remaining energy going to the national grid. Construction of the plant started in 2010 and Metso and Aker Solutions are among the suppliers.
The plant will use some 400,000 tonnes/yr of wood, supplied by SITA UK, the Forestry Commission and a number of other UK suppliers, a company spokesperson said. It will run on approximately 90% recovered wood and 10% virgin wood.
Last year, RWE npower renewables and SITA signed a long-term deal under which SITA will supply more than half of the recovered wood the plant needs, or approximately 240,000 tonnes/yr, which it will source through contracts it already has in place.
SITA has already started delivering fuel to an offsite storage and processing site so it is nearby when commissioning starts.
"This site will provide a strategic supply of fuel including monthly chipping of up to 6,500 tonnes of roundwood supplied by Forestry Commission Scotland. In total the site can handle up to 74,999 tonnes of recovered wood chips per year and has the capacity to store up to 25,000 tonnes of fuel at any time," an RWE spokesperson said.
Tullis Russel has a capacity of some 165,000 tonnes/yr of uncoated woodfree paper, specialty paper and board on three PMs at its Markinch mill.