summary &response - who rise the energy price?

the committee on climate changes says that green policies would add 110 to bills per household in the UK, 2020
some people had claime that because of investment in green energy, energy bills is getting increase.
and it would be rise the average bill to astronomical levels
CCC said average dual fuel energy bills showed an increase of 455 over the six years 2004 to 2010
but 80% of this is due to increase cost of gas price like increing in bills over the past few years have been largely due to higher wholesale gas cost.
and CCC chairman lory adair turner said that they anticipate a rise of around 100 in the average bill as a result of
investment in low-carbon power capacity, then it will benefit the UK in the long run(BBC.12.2011 http://www.bbc.co.uk/)
gas price is relate with political connection, so who knows to increase the price of gas is for increase the investment market of green energy and share the advantages with related companys and countries.
but as a ordinary citizen, it's not a good news to pay more for unexpected future. so i think the cost by investment of green energy have to be gained in other way not a tax of increase average bill.
if not, some people dislike to do something sustainable action for the future because of disadvantage right now.
http://www.bbc.co.uk/news/uk-16191900