Hindalco has registered a higher net profit of Rs.2,137 crore for the year ended March 31, 2011 against Rs. 1,916 crore in 2009-10. Net sales and operating revenue have increased to Rs. 23,859 crore from Rs. 19,522 crore. According to a release revenue from copper business for the quarter ended March 31, 2011 was higher by 38 per cent at Rs. 4,637 crore against Rs. 3,361 crore mainly on account higher volume, higher copper LME and by-product credits.