Green groups fearful as Osborne prepares to announce road-building, carbon tax breaks and delay to fuel duty increase
Alexander promises "flying start" for Green Deal energy efficiency scheme
Ministers also expected to confirm start date for Renewable Heat Incentive
Chancellor confirms £100m will support Scottish renewables with remaining £100m going towards Green Investment Bank
Government set to offer rebates to energy-intensive industries next month in a bid to lessen impact of carbon floor price
But response to Commons Energy Committee downplays prospect of offshore shale gas extraction
New figures show environmental taxes have fallen as a proportion of overall tax burden
Renewable energy industry fears under-reported "control framework" will force straitjacket on low carbon policy