Highlights
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Regional planning using traditional IRP could not fully reflect ASEAN’s power system transformation.
As the power sector evolves, driven by climate imperatives, technological disruptions and policy transformation, traditional IRP often fails to consider low-probability high-impact events, leaving gaps in the planning method and results.
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ASEAN regional planning (AIMS) needs IRRP for enhanced system resiliency and improved alignment on regional aspiration for the APG.
The IRRP will integrate probabilistic method, resiliency criteria, and iterative stakeholders’ consultation to produce more reflective planning results through robust planning scenarios, for better anticipation towards future supply-demand dynamics.
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Implementing IRRP requires enhancements of domestic and regional-level planning.
The implementation IRRP should be accompanied by the strengthening of national-level planning process, regional institutional framework, and planning methodology through a staged adoption for a more coordinated planning and ultimately, more optimal cross-border grid infrastructure investments.