Policies, Plans and Publications

Security of Supply Annual Assessment

Our Security of Supply Annual Assessments provide an assessment of the power system's ability to meet prudent winter energy and peak requirements over the next seven years. Historic Annual Assessments can be found here, and the most recent publication is linked below.

Cover note [ pdf 507.53 KB ]
Security of Supply Annual Assessment 2019 [ pdf 2.65 MB ]
Annual Assessment Results

Security of Supply Policies

We use several policies to manage the Security of Supply process.

Security of Supply Forecasting and Information Policy

One of the functions of the system operator, specified in the Code, is to prepare and publish a Security of Supply Forecasting and Information Policy.

Emergency Management Policy

The Emergency Management Policy (EMP) sets out the steps that we will take, as a reasonable and prudent operator, during an extended emergency.

We have prepared and published a Rolling Outage Plan and provided links to all approved participant plans.

Latest Approved Security of Supply Policies

Date Policy
1 August 2019 Security of Supply Forecasting and Information Policy 
19 June 2016 Emergency Management Policy [ pdf 215.85 KB ]
19 June 2016 System Operator Rolling Outage Plan [ pdf 251.34 KB ]