The System Security Forecast (SSF) is produced every two years and revised every six months if required.
Revisions to the SSF are required if changes to the power system materially affect the SSF. The 
SSF Guidelines [ pdf 666.68 KB ] document determines the purpose and principles of the SSF.
Our website has a dedicated page outlining thermal generation decommissioning analysis, including power system operation and security of supply. See Impact of thermal generator decommissioning.
2018
The 2018 System Security Forecast based on new information known by the System Operator.
SSF Change Log [ pdf 123.15 KB ]
| Part A | Date |
|---|---|
| Executive Summary [ pdf 515.74 KB ] |
Aug 2019 |
| Part B | Date |
|---|---|
| Grid Configuration and Operations [ pdf 790.97 KB ] |
Dec 2019 |
| Part C | Date |
|---|---|
| Study Approach and Assumptions [ pdf 586.1 KB ] |
Dec 2018 |
| Part E | Date |
|---|---|
| Frequency Principal Performance Obligations [ pdf 537.99 KB ] |
Dec 2018 |
| Part F | Date |
|---|---|
| Dry Year Operational Issues [ pdf 843.55 KB ] |
Aug 2019 |
| Part G | Date |
|---|---|
| Resources (Maps, Site Codes, SLDs etc) [ pdf 1.59 MB ] |
Dec 2018 |
| Part H | Date |
|---|---|
| Consultation Outcomes [ pdf 693.39 KB ] |
Dec 2018 |
