AJ Lucas Group Limited (ASX:AJL) is an Australian energy infrastructure company specializing in gas storage, production, and drilling services. The company provides large-scale underground gas storage solutions; conventional and unconventional gas production through its subsidiary Lucas Gas; gas well drilling and workover services via Lucas Drilling; and gas field services including completion, stimulation, and maintenance. It operates primarily in Australia, with key assets in the Surat Basin, Queensland, and Narrabri Gas Project in New South Wales, targeting energy utilities, producers, and infrastructure developers. Founded in 1999 and headquartered in Brisbane, Australia, AJ Lucas Group focuses on natural gas storage and production to support energy security and transition needs. In recent developments, the company advanced its Andarna Pilot Project in 2024-2025, successfully injecting and storing over 1 Bcf of gas in Queensland's Surat Basin, marking a key milestone in commercial-scale underground gas storage; it also secured strategic partnerships with energy majors for storage offtake and continued development of its 300 PJ Gloucester Gas Storage Project. Additionally, AJ Lucas completed funding rounds and farm-out agreements in late 2024 to support expansion, with no major acquisitions or name changes reported in the last two years.