Last reviewed on June 6, 2017

Archived 2020 Business-as-Usual Emissions Projection


The two previous California 2020 Business-as-Usual (BAU) greenhouse gas (GHG) emissions projections used in the AB 32 Scoping Plan (2008) and for the Cap & Trade Regulation (2010) are archived below. These projections were used to assess the GHG reductions necessary to return California to 1990 emission level based on the GHG inventories published by ARB in support of its programs. California's current 2020 GHG emissions projection is available on the current BAU page.


The two previous 2020 BAU emissions projections are archived below.

2020 BAU Projection Version Archive Document
Original Scoping Plan (2008)
Cap-and-Trade Update (2010)