Tiruvallur district is one of the fastest developing districts in Tamil Nadu in terms of industrial development. The district has many leading industries like Kamarajar Port, North Chennai Thermal Power Station, National Thermal Power Corporation, L&T Ship Build, NIOT, ITC, IOCL, HPCL, BPCL, Hindustan Motors and CPCL, Ennore (Tondiarpet). It also has the Ennore Thermal Power Station and the Avadi tank factory. In retail spending, the Thiruvallur district emerges third in India, only after
Noida and SW Delhi surpassing Bangalore and Mumbai by a clear margin. The district has nine industrial estates, six developed by the government and three by private organisations.
Government industrial estates • Electrical Industrial Estate, Kakalur. • SIDCO Industrial Estate, Kakalur • Petrochemical Industrial Estate, Vichoor • SIDCO Industrial Estate, R.K. Pet • SIDCO Industrial Estate, Gummidipoondi • SIDCO Industrial Estate, Thirumazhisai
Private industrial estates • M.M.Industrial Estate, Alapakkam • Moccaram Industries, Velappan Chavadi • Ekambara Naicker Industrial Estate, Alapakkam The district has 16,940 small scale industries, notable among them being food, wood, textile, chemical, engineering, non-metallic and leather industries. ==See also==