When people mention the company Opal, they are typically referring to OPAL Fuels Inc., a clean energy enterprise specializing in capturing landfill gas, converting it into renewable natural gas, and operating specialized fueling infrastructure for commercial transportation fleets. Alternatively, the name can occasionally refer to smaller private businesses or unrelated regional entities in technology or manufacturing sectors that share the name. However, in financial, energy, and stock market discussions, the designation almost exclusively points to OPAL Fuels, known for its participation in the North American renewable energy transition and low-carbon fuel infrastructure development.