Core Insights - Clean Energy Fuels Corp. (NASDAQ:CLNE) is recognized as one of the top oil and gas penny stocks, driven by hedge fund interest and significant upside potential [1] Group 1: Hydrogen Fueling Stations - Clean Energy Fuels Corp. announced the construction of a second hydrogen fueling station for Foothill Transportation, with a budget of $11.3 million, partially funded by federal grants [2] - The new station will be located at Foothill's Arcadia bus yard and will support 19 new hydrogen fuel cell buses [2] - The first hydrogen station at Pomona has been operational since June 2023, serving 33 buses, highlighting a long-term collaboration of over 20 years between the two organizations [3] Group 2: Renewable Natural Gas (RNG) Production - The company is also constructing three RNG production plants in collaboration with Mass Energy Works, with a total investment of $80 million [3] - These plants, located on dairy farms in South Dakota, Georgia, Florida, and New Mexico, are expected to produce three million gallons of RNG annually starting in 2026 [3] - The RNG produced will supply over 600 fueling stations across the United States [3] Group 3: Market Position - Clean Energy Fuels Corp. is the largest supplier of renewable natural gas for transportation in North America, with fueling stations strategically located throughout the U.S. and Canada [4]