If we were to take the 'dash for gas' out of the equation then the UKs CO2 reduction in the 15 years from 1990 is only 7%. The target is 60% reduction by 2050 ref-RCEP. On a linear basis we should have achieved a %15 reduction by now, and taking the Pareto 80:20 princple we should have achieved a 48% reduction (80% of 60%) in 20% of the time - now elapsed. So we have probably done the easy bit and the next steps will increasingly difficult. Also if the target is 60% reduction by 2050 then on a linear basis shouldn't the target for 2020 be a reduction of 30% - not the 20% we are doubtful of achieving?
We have a renewable power obligation for electricity generation. UK average renewable electricity is 3.8% (or 1.3% CO2 reduction)(see electricityinfo.org). Biofuels have been encouraged through duty relief (40p/litre) and has delivered biofuels at just 0.2% (2005), or around 0.05% CO2 reduction!
So these policies have delivered just 1.35% CO2 reduction. It is a good job we had the 'dash for gas' to deliver some real reductions. So what are we going to do now?
Please read the DTI Energy Review 2006 and study the recommendations and ask "is this policy going to take us where we must go? - or is it window dressing and procrastination?"
It also seems that low carbon energy is/will be more expensive. See Solutions. Any country that leads in low carbon energy will penalise its international competitiveness. Hence the need for agreement of all the countries in the world to act together to ensure fairness in acheiveing the reduction required. This surely must be the greatest challenge for the human race - to collaborate globally to achieve a very difficult goal. How many people have to die before we all wake up to what has to be done? This train already has a great head of steam, is moving fast and rapidly going faster. See CO2 Balance.