The best climate change policy in the world is British Columbia's carbon tax. (More on BC from our 2012 NY Times op ed, from this 2012 Sightline post, and from The Economist in 2011, plus here's some historical perspective.)
Our vision is to bring a similar policy to Washington State to improve the state's economy and the state's environment. That means following BC's lead by implementing a carbon tax of $30 per ton of CO2 (equivalent to about $0.30 per gallon of gasoline, $0.03 per kWh of coal-fired power, or $0.015 per kWh of natural gas-fired power). Such a tax would reduce carbon emissions and still raise about $2.3 billion per year in Washington State.
Here are some details on our latest draft proposal. We're open to other ideas, so holler if you have any!