The aim of the Gas Security of Supply Significant Code Review is to reduce the likelihood, severity and duration of a gas supply emergency. We want to ensure that in an emergency the market rules provide appropriate incentives on gas shippers to balance supply and demand. We also propose a mechanism for paying large consumers if they are able to reduce their demand before an emergency. This is intended to avoid or minimise an emergency and protect consumers that incur high costs when interrupted.

This document describes our policy decision on a demand-side response mechanism, the principles we think it should meet and how we plan to develop it. It also gives an overview of our final policy decision for cash-out reform, and our proposed decisions on how our reforms will work in practice.

Alongside this document, we are publishing draft business rules and legal text for code and licence changes. We invite comments on this drafting. Our priority is to ensure it meets the intent of our policy decisions for cash-out reform and demand-side response.