A tanker full of diesel rolled over on Sunday in Eureka County, spilling around 4,000 gallons of fuel.
Nevada diesel prices are up 58.3% since late February, one of the fastest rates in the nation.
The hope is to have the new plant up and running by early next year.
The average U.S. price of regular-grade gasoline fell a penny over the past two weeks to $2.25 per gallon.
Nationwide, the highest average price for regular-grade gas is in the San Francisco Bay Area at $3.27 per gallon. The lowest average is in Baton Rouge, Louisiana, at $1.79 per gallon.
The average U.S. price of regular-grade gasoline fell 9 cents over the past two weeks, to $1.93 per gallon.
A federal judge in San Francisco has approved a $15 billion court settlement of most claims against Volkswagen for its emissions-cheating scandal.