The Environment and Public Works Committee split largely along party lines on the bill, which calls for a roughly 70 percent cut from 2005 levels by 2050 in the production of carbon dioxide and other climate-altering pollutants.
The committee, which approved the measure by an 11-to-8 vote, worked through dozens of amendments over nearly 10 hours of hearings on Wednesday.
The legislation, which is opposed by a powerful array of forces including utilities, oil companies and manufacturers, faces an arduous path through the full Senate and then in the House. Little action is expected before the first of next year.
Previously I had discussed the passage of the bill by a senate panel (a portion of this larger committee).