Ireland's first batteries were short duration, but the pipeline features more 4–10 hour batteries

Annual BESS capacity additions by duration (MW)

≤1 hour 2 hour 4 hour 6–8 hour 10+ hour Cumulative

Source: Energy Storage Ireland Pipeline Survey 2025, EirGrid, Modo Energy

Note: Historical durations from published project specs. Projected duration mix based on ESI survey; target dates from developer submissions. Deployment beyond 2026 is uncertain.

MODOENERGY