DCRP/MP/24/03: EREC G59 Issue 3 A8
What is being proposed
This modification includes supplementary sections designed to facilitate intentional islanding during the process of system restoration.
Details
Analysis
The Distribution Code modification EREC G59 Issue 3 A8 adds supplementary sections to facilitate intentional islanding during system restoration processes. This builds on existing Engineering Recommendation G59 guidance for distributed energy resources. The modification enables controlled isolation of network sections while maintaining local supply during wider system recovery.
Why it matters
This change enables more resilient restoration by allowing distribution networks to operate islands of generation and load during blackouts. As such, it reduces the binary constraint of system availability by creating intermediate states between full connection and complete disconnection, though the economic value depends on how islanding costs are allocated between network operators and island participants.
Key facts
- •Modification to EREC G59 Issue 3
- •Adds intentional islanding provisions
- •Applies during system restoration processes
- •Published 2026-03-29