Most companies are "banking" their credits right now or they hand over $300K in credits to the exchange to join at market price of course. They sell them to banks and investment companies. BTW, I don't think this is a complete list on their site. I don't see Lehman brothers or Goldman Sachs and I pretty sure they are members.
The CCX exchange closed at $4.05 per metric ton of CO2 today.
Please Post a picture of a metric ton of CO2 before I send you $4.05......