This report, prepared for Gas Industry Co by Farrier Swier Consulting in association with Johnson Winter & Slattery, advises on the commercial issues involved in updating the National Gas Outage Contingency Plan (NGOCP). The overall objective is to develop a soundly based policy for pricing under outage and contingency situations. The report sets out detailed background information and analysis to enable stakeholders to provide informed input as a basis for a decision by Gas Industry Co on the most appropriate approach.