Business Green: Tesco plans to power its newly opened Teesport Distribution Centre in Middlesbrough entirely by biomass when a new plant comes on stream in the region in 2012. The supermarket giant has just signed a deal with MGT Power to provide the £50 million facility with 100 per cent of its electricity requirements. The Tees Renewable Energy Plant, which is sited next to Tesco’s warehouse on the Teesport Estate, received the go-ahead from the UK government in July. Construction is …