Conservation and big business in Minnesota
In the cap and trade legislation, any entity that emits large amounts of greenhouse gases would have to have a permit for each ton of gas it emits. That's got energy-intensive industries worried. But many of them, like 3M in Hutchinson and Great River Energy in Maple Grove have already been reducing their energy use.
Gas emissions by sector

Photo tour: Great River Energy

Graphic: Minnesota's top greenhouse gas emitters
