The law as written right now would also require 36 billion gallons of ethanol to be used in gasoline by 2022 and takes steps to ban gasoline price profiteering.
On the other hand, Senators also dropped $32 billion in clean energy incentives from the legislation after Republicans objected the $29 billion of extra taxes on U.S. oil companies, which would have funded most of the clean energy incentives. The loss of incentives will be a blow to wind, solar, and geothermal energy producers, according to CNN.
Senators also dropped plans for making transportation fuels from coal, and for a renewable energy standard that would have required utilities to get 15 percent of their power from renewable sources by 2020.
There's been no action from the House side on fuel efficiency yet. Earlier this week, Democrats stalled action on fuel efficiency standards that were part of energy legislation that Speaker Pelosi wants to pass next month.
Lawmakers are eager to finish the energy bill so they can start debating immigration policy reform.