System Security Forecast

In our role as System Operator, we are required to achieve Principal Performance Obligations (PPOs) agreed with the Electricity Authority.  The System Security Forecast (SSF) forecasts our ability to achieve these PPOs over the next three years.

It also provides information to enable market participants to understand any constraints on the operation of the New Zealand power system for the next three-year period, taking into account existing power system assets, both generation and grid, as well as committed investment and decommissioning. 

The (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 determine the purpose and principles of the SSF.

In addition to the SSF, we produce several regular security assessments that market participants may also find valuable. These include the Security of Supply Annual Assessment, the New Zealand Generation Balance, the Transmission Planning Report, and other regular updates on the market and system security such as Electricity Risk Curves information on lake levels.

2022 System Security Forecast

The current SSF was produced in December 2022. The SSF and related documents can be found below. Other documents relating to the SSF are available in the resources section of the website.