The country is down to 25 days of diesel supply with stockpiles at their lowest level for this time of year in records going back to 1993. In the Northeast, where more people burn fuel for home heating than anywhere else in the country, inventories are a third of their typical levels heading into winter. National Economic Council Director Brian Deese called the levels “unacceptably low.” By late October, diesel prices had risen for more than two weeks to 50% above where they were a year ago.