NATIONAL Grid has been fined £15m after the Court of Appeal ruled it had infringed competition rules regarding metering contracts with UK gas suppliers.The Warwickshire-based utility said it was disappointed with the ruling but pleased that the court had recognised the unusual nature of the case and agreed to halve the fine.The case began in April last year when the Competition Appeal Tribunal upheld, in part, Ofgem's 2008 decision that National Grid infringed the Competition Act 1998 by entering into a number of metering con......for the full story register now for free or login below...