This explains how it makes wind affordable, but not necessarily cheaper except perhaps in the 20+ year time frame. It likens the CfD models to mortgages which do, in fact, raise of the cost of housing. The long-term savings potential seems to be in the stability of "fuel" costs which are zero for wind and who-knows-what for oil.

The below statement confuses me deeply as getting more wind is entirely out of our control. "it costs you nothing to produce an extra MWh (all you need is more wind)"