Covering California’s cap-and-trade program and the risks of market oversupply, CALmatters spoke with Near Zero’s Danny Cullenward:

In California, lawmakers instructed the air board to examine the issue last year, and the agency has  steadfastly maintained that the surplus of credits will not imperil California’s fight against climate change.

The disconnect will be addressed this week in a hearing before the newly formed Joint Legislative Committee on Climate Change Policies. The committee chairman, Assemblyman Eduardo Garcia, a Democrat from Coachella, said the air board will be grilled on how it intends to manage allowances.

“Our numbers don’t pencil out to be the same numbers they propose,” Garcia said. “We will go back and reexamine the numbers they are projecting. We have some questions about how they got there.”

Danny Cullenward is an energy economist with the climate-change think tank Near Zero and teaches environmental law at Stanford University. He’s also a member of the newly established Independent Emissions Market Advisory Committee that is charged with reviewing the mechanics of cap and trade. He says the air board not only got its projections wrong but also used an incorrect model for its calculations.  The board’s most recent estimates are off by 10 percent and used a model that the agency identified in 2010 as problematic, he said in an interview.

“I can’t emphasize enough, this is a basic question of scientific integrity,” Cullenward said. The board has been reluctant to engage outside experts on the issue of allowances, “in a rush to justify that this is not a problem,” he said.

Read the full article, “Checking the math on cap and trade, some experts say it’s not adding up” by Julie Cart, on the CALmatters website.