Legislation aimed at avoiding sweeping tax increases looks headed for Senate approval after negotiators added sweeteners to promote ethanol and other alternative energies.

Tax provisions designed to increase production of hybrid cars, biodiesel fuel, energy-efficient homes, coal and energy-efficient household appliances would be extended through the end of 2011.

There is no timetable for passage in the Senate, but a test vote was set for Monday afternoon.

It appears the deal will get overwhelming support.

Supporters say it would help accelerate a sluggish recovery from recession.

Action in the Senate comes even though House Democrats have balked at the plan hashed out by President Barack Obama and GOP lawmakers.