At the beginning of this year, expiring NOx credit prices were stabilizing until late March. When facilities' allocations are less than their emissions, demand for credits increases while supply decreases. A variety of factors can contribute to supply limitation, including penalties for missing monitoring data in earlier years as well as the lowering of emissions standards. By not creating any effect at all. ACE is not a brokerage, it is a trading platform where bids are matched automatically by an electric market-engine.
Participants also have access to all past market prices through the password-protected site.
The latest South Coast Air Quality Management District rulings are detailed for ACE participants. Click here to open the update page . Here is a recent article by the New York Times, describing the effects of Bush's environmental plan on industries and environmental issues. Click here for the html sheet .