jess long term security of energy supply december 2006 report www dti gov uk reliability index html contents introduction 4 developments since the sixth feedback on 6 5 commitments what s new in this european union and international work 7 northern ireland 8 gas market 9 outlook prices demand side response 10 quality electricity generating plant closures their likely impact 11 12 wholesale oil 13 crude production trade refined petroleum products product 14 stocks coal 15 uranium 16 environmental regulations 17 eu emissions trading scheme regulation resilience 18 network transmission distribution 19 winter direction for 2007 request 20 joint working group 2 annexes annex