The Cost of the Green Agenda on UK Fuel Prices

The cost of green energy is supposed to have pushed the cost of electricity through the roof forcing pensioners to burn books rather than heating with electricity
http://australianconservative.com/2010/01/uk-pensioners-burn-books-for-warmth/

If this is the case then electricity costs should have risen much further than the raw energy costs.
Using government figures you get this graph

So it seems that current prices track the changes in solid fuel prices but are considerably less than gas price changes.

So what am I missing?