The House at press time was poised to vote on an $18.2-billion package of tax breaks aimed at promoting energy efficiency and renewable power, such as wind and solar. The bill, which has new incentives and extends existing ones that are set to lapse, may well clear the House. Beyond that, however, prospects are cloudy. A key problem is the bill offsets revenue that the incentives cost the Treasury, mainly at the expense of oil companies. That language, and other provisions, drew a Feb. 26 White House veto threat.