Bloomberg
For years, Tesla Inc. has hauled in revenue by selling credits to other carmakers that needed to offset sales of polluting vehicles to US consumers. These sorts of transactions have largely been shrouded in secrecy — until now.
General Motors Co. and Fiat Chrysler Automobiles NV disclosed to the state of Delaware earlier this year that they reached agreements to buy federal greenhouse gas credits from Tesla.
The deal with GM will come as a surprise to those who thought years of sales of plug-in hybrid Chevrolet Volts and all-electric Chevy Bolts would leave the largest US automaker in the clear with regard to regulatory compliance. Tesla has generated almost $2 billion in revenue from selling regulatory credits since 2010.