Business Green: Facing pressure from environmental regulations and direct action from protest groups, coal power operator Drax Group has announced plans to develop a 900MW biomass-fired business with the help of German engineering giant Siemens. The companies announced this week that they plan to build, own and operate three dedicated biomass-fired generation plants in the UK at the cost of about £2bn. Each plant is expected to pay back the costs of construction in six years from the time it becomes …