My Lords, in the United States, shale gas has displaced coal. I should, by the way, declare my interest in coal even though, once again, I am speaking against it and in favour of its greatest competitor, gas. There has been a massive displacement of coal by shale gas, which brings me on to the next point. The effect of displacing coal with shale gas in the United States has been to cause the fastest drop in CO2
emissions of any western country. They are down to the levels they were at 30 years ago and down to the per capita levels they were at 50 years ago. These are extraordinary achievements and suggest that we have, in shale gas, a technology for short-term reduction in carbon dioxide emissions—not all the way down to 50 grams or anything like that but a good chunk of the way—that could be achieved and combined with affordability. The counterfactual to building a huge amount of offshore wind capacity and other industries is to allow the development of gas in this country. We know that the numbers would be much lower in terms of the cost to the consumer—it would be much more
feasible and much more affordable. To throw away the flexibility of going for that possibility would be a potential mistake.