Meridian Energy monthly operating report for August 2026

Key points

• National hydro storage increased to 155% of historical average by 7 September 2026
• August 2026 retail sales volumes were 4.7% lower than August 2025
• Meridian's generation in August 2026 was 21.1% higher than the same month last year

Full summary

Meridian Energy's August 2026 monthly operating report highlights a significant increase in national hydro storage, which rose from 128% to 155% of historical average by 7 September 2026. South Island storage levels reached 178% of average while North Island storage decreased to 79% of average. Despite a cold start, August was a warm and wet month, particularly for the South Island. National electricity demand in August 2026 was 0.3% lower than August 2025. Meridian's retail sales volumes in August 2026 were 4.7% lower than August 2025. Generation in August 2026 was 21.1% higher than the same month last year, reflecting higher hydro and wind generation. The average price Meridian received for its generation in August 2026 was 62.3% lower than the same month last year.