Preventing Blackouts in a Renewables-Dominated Power System: The Strategic Role of LDES

Synopsis

• Lessons from recent system stress events and near-misses in high-RES systems 
• Why short-duration flexibility alone cannot manage multi-day renewable shortfalls 
• LDES as a clean alternative to fossil firm capacity for security of supply 
• Integrating LDES into energy security frameworks, adequacy standards, and planning tools 
• Implications for market design, grid codes, and investment signals