ETS in force
USA - California Cap-and-Trade Program
USA - Regional Greenhouse Gas Initiative (RGGI)
(Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New York, Rhode Island, and Vermont)
ETS under consideration
USA - Washington
(Note: The link refers to "CARBON PRICING" and the citation is derived from subsection "The economis case")
"The Regional Greenhouse Gas Initiative (RGGI) is the first market-based regulatory program in the United States to reduce greenhouse gas emissions. RGGI is a cooperative effort among the states of Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New York, Rhode Island, and Vermont to cap and reduce CO2 emissions from the power sector."
"Following a comprehensive 2012 Program Review, the RGGI states implemented a new 2014 RGGI cap of 91 million short tons. The RGGI CO2 cap then declines 2.5 percent each year from 2015 to 2020."
"Since January 2015, the cap-and-trade program's coverage includes sources responsible for approximately 85% of California’s GHG emissions. A key part of Californian climate policy, the program
will help to meet its mandate of reducing GHG emissions to 1990 levels by 2020 and achieving an 80% reduction from 1990 levels by 2050."