Ooh, I know the answer to this one. It is in large part because the market structures Neil's party did nothing to address during 14 years in office mean gas plays a much bigger role in setting wholesale power prices in the UK than they do in many other economies.
If its just a "global spike in gas prices" how come we have the highest industrial electricity prices in the developed world? Why are our prices so many times higher than the US? The reality is Miliband's policy is pushing up prices.