President Joe Biden said in his State of the Union address Tuesday night that the United States is going to rely on oil and gas even as his administration pursues a transition to renewable energy sources, provoking laughter from Republicans and grumbling and boos from members of his own party.

The statement was ad-libbed by Biden and was not included in a copy of his prepared remarks circulated by the White House prior to his speech.

“We’re still going to need oil and gas for a while," Biden said Tuesday night, eliciting some restrained booing from Democrats in attendance.

Later, Biden said, "We're going to need domestic oil for at least another decade."

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That remark, which was also ad-libbed, was met with laughs by some Republicans in the chamber.

Biden campaigned on the promise to "end fossil fuels" and transition the U.S. away from relying on oil and gas.