MADISON, Wis. (AP) -- Gov. Jim Doyle plans to appoint a global warming task force and create an energy independence office to coordinate an effort to dramatically expand the state's use of renewable energy by 2025.

He plans to announce the proposals in his "state of the state" address Tuesday night.

The governor will propose grants, loans and tax credits for projects to help the state rely less on fossil fuels and curb emissions linked to global warming at a time when energy costs and concerns about climate change are rising.

Doyle wants to institute tax credits for gas stations and vehicle fleet operators to reduce the cost of installing pumps for renewable fuels such as ethanol and bio diesel.

Republican state Representative Dean Kaufert, of Neenah, is a former co-chairman of the Legislature's Joint Finance Committee. He has concerns about how the measures will be funded, but says he sees merit in many of the proposals.

(Copyright 2007 by The Associated Press. All Rights Reserved.)