Tesla co-founder and CEO Elon Musk called on the United States to increase its domestic oil output in response to Russia’s invasion of Ukraine, while also acknowledging that his electric car company would be negatively affected by that move.

“Hate to say it, but we need to increase oil & gas output immediately,” Musk tweeted Friday. “Extraordinary times demand extraordinary measures.”

Musk added, “Obviously, this would negatively affect Tesla, but sustainable energy solutions simply cannot react instantaneously to make up for Russian oil & gas exports.”