There was a request from my previous article for further consideration of Tesla's revenue from other credits that are mainly generated by greenhouse gas (GHG) credit sales. Unlike the ZEV, which applies only in a number of countries, greenhouse gas legislation is a federal requirement established by the EPA and the National Road Traffic Safety Administration (NHTSA ). EPA published its report for 2018 a few weeks ago, summarizing the market activity for the model year for 2017
Source: Tesla 10-K Forms
Greenhouse gas legislation is relatively neutral technology, manufacturers to deploy any power units while reducing emissions from their fleet. Electric vehicles (EP) and fuel cell electric vehicles (FCEV) are extremely favorable as they are believed to emit zero g / mi in the exhaust; significant benefits for average fleet emissions. For carmakers who do not have a fleet of compensation, they are able to generate a significant amount of credits for the sale of other more incompatible carmakers.
Tesla almost immediately sold all the greenhouse gas credits generated in each relevant model year. Unlike ZEV's credits, where Tesla sold them to the majority of car manufacturers, their greenhouse gas credits were purchased only by Mercedes and FCA.