Information was obtained from firm representatives, United States Securities and Exchange Commission and HBJ research. Information on The List was supplied by individual companies through questionnaires and could not be independently verified by the Houston Business Journal. In case of ties, companies are listed alphabetically. The employee counts given do not necessarily reflect the number of layoff and furloughs due to Covid-19 and the energy crisis.
Columbia Gas unveils renewable natural gas fleet vehicle
The system, known as NeuFuel, differs from compressed natural gas because it can be used at a lower pressure than CNG.