[T]here are many potential policies to reduce greenhouse-gas emissions for which the total benefits outweigh the total costs. For the United States in particular, sound economic analysis shows that there are policy options that would slow climate change without harming American living standards, and these measures may in fact improve U.S. productivity in the longer run. (1997)

—Economists' Statement on Climate Change, drafted by Kenneth Arrow, Stanford University; Dale Jorgenson, Harvard University; Paul Krugman, MIT; William Nordhaus, Yale University; and Robert Solow, MIT. Signed by over 2,500 economists including eight Nobel Laureates.

[T]he overall impacts of the climate change emission reduction strategies on California’s economy are expected to be positive. Specifically, when the emission reduction strategies are considered in total, the resulting impacts on the economy are expected to translate into job and income gains for Californians. For example, in 2020, the implementation of the strategies is expected to result in a net increase of 83,000 jobs and $4 billion, in income, above and beyond the substantial growth that will occur between today and 2020.

The favorable impacts on the economy are possible because of the reduced costs associated with many of the strategies. The additional job growth is expected to come from the net savings to consumers associated with the implementation of the strategies. The savings will, in turn, promote further business expansion and job creation.

Climate Action Team Report to Governor Schwarzenegger and the California Legislature

[T]he State of California should move quickly to control global warming gases.

[W]ell-designed strategies to limit global warming gases can reduce emissions substantially at low or no cost to the state, and could yield economic (as well as climate) benefits. Well-designed strategies can stimulate innovation and efficiency, which could help the state become a technological leader in the global marketplace.

We urge you to accelerate climate action policies that will demonstrate political leadership and create economic opportunities in California. The most expensive thing we can do is nothing. (2006)

—Open Letter from California Economists to the Governor and Legislature, signed by over 60 economists.