‘Regulations for new coal plants would increase electricity prices by as much as 80 percent, an Obama administration official told lawmakers on Tuesday.

Julio Friedmann, deputy assistant secretary for clean coal at the DEPArtment of Energy, told members of the House Energy and Commerce Committee’s oversight board that carbon capture and storage technology was still not ready for prime time.

“The precise number will vary, but for first generation we project $70 to $90 per ton [on the wholesale price of electricity],” Friedmann said. “For second generation, it will be more like a $40 to $50 per ton price. Second generation of demonstrations will begin in a few years, but won’t be until middle of the next decade that we will have lessons learned and cost savings.”’

Read more: Energy official: Electricity prices to soar 80 percent, thanks to EPA coal regulations