April 1999 - The Automated Power Exchange (APX) announced that it will initiate a "green ticket trading" system that will provide greater flexibility for participants in the APX Green Power Market.
Under the new trading mechanism, qualifying renewable generators selling their power into the commodity market will receive a green ticket for every megawatt-hour of power they generate. The green tickets will allow the particular attributes of the power, such as resource and technology type or whether the electricity comes from a new or pre-existing facility, to be separated from the electricity commodity. In this way, generators will be able to fully capture the true market value of their particular type of renewable power generation.
APX believes that the green ticket system will help intermittent renewable generators in particular because the renewable energy component will have the same value regardless of when the power is actually generated. Also, the system will enhance the ability to track renewable power sales across state boundaries.
News Release - APX Pioneers Trading of Green Tickets