Following the recent consultation, the new IFA Charging Methodology has been approved and will be effective from 1st January 2012.

• IFA Charging Methodology 2011/12 - effective 1 January 2012

Following the associated consultation conducted in April and May 2009, National Grid's Charging Methodology for operation under the Access Rules (issue 7.0) and the new Capacity Management System has been approved.

• IFA Charging Methodology 2009/10 - effective 1 October 2009