From an article by Tom Content and Lee Bergquist in the Milwaukee Journal Sentinel:

A draft of major legislation released Thursday calls for greater use of renewable power, opens the door to construction of nuclear power plants and lays the groundwork for how Wisconsin addresses global warming.

The legislation sets the stage for a major debate in Madison, with proponents touting the promise of thousands of new jobs and opponents warning that new controls will damage the state’s already weak manufacturing sector.

The bill would dramatically change the state’s sources of energy, mandating that 25% of electricity come from wind, solar, biomass and other renewable sources by 2025.

Wisconsin is heavily dependent on coal, a key source of greenhouse gases that most climate scientists say is a leading contributor to rising global temperatures.

The legislation also would tighten building codes to increase energy efficiency, impose restrictions on engine idling of freight trucks and adopt vehicle emissions standards similar to California and other states.

These link connect to:
+ Index to the bill
+ Short overview
+ Detailed summary