We need to have penalties for the large emitters that are not meeting their objectives. For instance, in the European market there is a penalty of €100 per tonne for those that cannot achieve their commitment to reduce greenhouse gas. The problem with the European market, as you know, is that they decided to go ahead with new allowances without any control over the supply and demand. With the financial crisis there were a lot of industries closing; the demand went down and the supply was going up so the price collapsed.
Looking at the experience of the European market, regulators in California hope to avoid such a situation. The carbon market is actually a commodity market. A very good experience with such a market was the SO2 market. If you remember, in the nineties they decided to decrease the acid emissions coming from coal-fired power plants and they created an SO2 market, the SOx market, in order to diminish the importance of the emissions of acid rain and so on. This market worked wonderfully because it was well designed.
In the end, I think we should look at the experience of California and Quebec, and we will eventually conclude whether we can keep at it.