Business Green: Climate change minister Greg Barker has set a new mantra for the Department of Energy and Climate Change (DECC) by pledging to treat all future energy policies with TLC — transparency, longevity and certainty. Speaking to delegates at the Confederation of British Industry (CBI) today, Barker vowed TLC will become the "touchstone" of all DECC policies. He accused his Labour predecessors of frequently tweaking policies, causing confusion among investors — a criticism with which the …