Business Green: Drax coal-fired power station announced this week that it has signed a £10m contract with Doosan Babcock to provide a facility that will burn biomass alongside coal, reducing its carbon emissions by more than 2.5m tonnes a year. The mix of biomass and coal will produce the same amount of energy as burning pure coal, but with fewer emissions because biomass is carbon neutral. The company said that on completion, the biomass co-firing facility will be the largest of its type in …