The chamber gave the bill first-round approval Thursday afternoon. Senate leaders expect easy passage on a final vote that would send the measure to the House.
The legislation contains renewable energy proposals backed by Parkinson. The governor made the bill's passage a condition of allowing Sunflower Electric Power Corp. to build an 895-megawatt power plant in Finney County.
Passage of the bill also would end Sunflower's litigation over denial of an air-quality permit for the two coal-fired plants the company initially sought to build.