Before the bell, shares were up 3.8% to $9.28.
The natural gas producer said in a statement that it had opened stations in Amarillo, Texas, and Oklahoma City, Oklahoma, to "serve UPS' (UPS) growing heavy-duty LNG truck fleet."
Additional truck fueling agreements have also been announced for its nationwide network from Los Angeles to Jacksonville, Florida.
The Newport Beach, Calif.-based business also said it had been awarded $2.5 million in grant funds from Pennsylvania to build two public-access liquefied-compressed natural gas stations in the eastern region of the state.
Must Read: Warren Buffett's 10 Favorite Stocks
TheStreet Ratings team rates CLEAN ENERGY FUELS CORP as a Sell with a ratings score of D+. TheStreet Ratings Team has this to say about their recommendation:
"We rate CLEAN ENERGY FUELS CORP (CLNE) a SELL. This is driven by several weaknesses, which we believe should have a greater impact than any strengths, and could make it more difficult for investors to achieve positive results compared to most of the stocks we cover. The company's weaknesses can be seen in multiple areas, such as its weak operating cash flow, poor profit margins, generally disappointing historical performance in the stock itself and generally high debt management risk."