The world is off track to meet its climate goals and the public is to blame, Darren Woods, chief executive of oil giant ExxonMobil, has claimed—prompting a backlash from climate experts.

As the world’s largest investor-owned oil company, Exxon is among the top contributors to global planet-heating greenhouse gas emissions. But in an interview, published on Tuesday, Woods argued that big oil is not primarily responsible for the climate crisis.

The real issue, Woods said, is that the clean-energy transition may prove too expensive for consumers’ liking.

“The dirty secret nobody talks about is how much all this is going to cost and who’s willing to pay for it,” he told Fortune last week. “The people who are generating those emissions need to be aware of and pay the price for generating those emissions. That is ultimately how you solve the problem.”

Woods said the world was “not on the path” to cut its planet-heating emissions to net zero by 2050, which scientists say is imperative to avoid catastrophic impacts of global heating. “When are people going to willing to pay for carbon reduction?” said Woods, who has been Exxon’s chief executive since 2017.

“We have opportunities to make fuels with lower carbon in it, but people aren’t willing to spend the money to do that.”

Experts say Woods’ rhetoric is part of a larger attempt to skirt climate accountability. No new major oil and gas infrastructure can be built if the world is to avoid breaching agreed temperature limits but Exxon, along with other major oil companies currently basking in record profits, is pushing ahead with aggressive fossil-fuel expansion plans.