A top Environmental Protection Agency (EPA) official tasked with guiding the Biden administration’s emissions regulation policies was unable to approximate how much electricity the U.S. uses in a year, despite his own agency pushing regulations that would effectively mandate widespread adoption of electric vehicles (EVs) and substantially increase overall electricity demand.

Principal Deputy Assistant Administrator for the Office of Air and Radiation (OAR) Joseph Goffman admitted Thursday that he did not know how much electricity the U.S. uses in a year when asked by Republican Rep. August Pfluger of Texas during a House Energy and Commerce Committee hearing on proposed EPA emissions regulations and Republican-sponsored legislation to counter them. Goffman’s admission regarding American energy demand comes as the OAR and EPA are pushing regulatory standards for American car production that would necessitate a large increase in electricity supply.

“How much electricity does the United States demand each year?,” Pfluger asked. “I don’t know that number off the top of my head,” Goffman responded.