Greenpeace has accused George Osborne of offering "sweetheart tax deals" to reassure companies that fracking would be profitable.
Energy campaigner Lawrence Carter said: "Experts from energy regulator Ofgem to Deutsche Bank and the company in receipt of this tax break, Cuadrilla, admit that it won't reduce energy prices for consumers.
"Instead we're likely to see the industrialisation of tracts of the British countryside, gas flaring in the Home Counties and a steady stream of trucks carrying contaminated water down rural lanes."
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