Experts are warning Colorado households utility bills currently making their way to mailboxes are likely to be even higher than the supersized bills people received for November’s energy use.

Denise Stepto, chief communications officer for Energy Outreach Colorado, said as energy prices have remained stubbornly high, December brought an Arctic blast and subzero temperatures right in time for winter holiday celebrations.

‘This next bill, we think, is going to be the higher one, much hig...