Petro Carbon and Chemicals Ltd (PCCL.NS) manufactures and supplies calcined petroleum coke (CPC), green or raw petroleum coke, recarburiser, ladle additive, carbon raiser and other specialty carbon materials; the company serves aluminum smelters, graphite electrode producers, titanium dioxide manufacturers, foundries, steel, metallurgical, chemical and other industries, including major clients such as Hindalco and NALCO. Incorporated on November 5, 2007 and headquartered in Kolkata, India, with manufacturing operations in Haldia, West Bengal, PCCL operates a 93,744 metric tonnes per annum CPC plant spanning 30 acres, equipped with specialized railway siding, over 60,000 tons raw coke storage and proximity to Haldia port; it functions as a subsidiary of the diversified ATHA Group, which spans mining, power, steel and international projects. In recent developments, PCCL commissioned a 10 MW waste heat recovery boiler (WHRB) captive power plant at its Haldia facility on March 6, 2025 to enhance energy self-sufficiency, reduce costs and support expansions; it received environmental clearance for installing up to 72,000 TPA advanced carbon materials and revamping its 48,000 TPA old carbon paste plant; additionally, its subsidiary entered a partnership in the carbon chemicals business, while the company explores carbon-based recycling opportunities. PCCL maintains a B2B model focused on high-quality CPC production via calcination of refinery residues at 1200-1300 degrees Celsius, with rigorous quality controls, R&D for efficiency and sustainability, and strategic infrastructure for domestic supply.