Meridian Energy Monthly Operating Report for May 2021

Attached is Meridian Energy Limited's monthly operating report for the month of May 2021. Highlights this month include: ? In the month to 10 June 2021, national hydro storage increased from 67% to 70% of historical average ? South Island storage increased to 75% of average and North Island storage was unchanged at 35% of average by 10 June 2021 ? Meridian's May 2021 monthly total inflows were 111% of historical average ? Meridian's Waitaki catchment water storage at the end of May 2021 was 66% of historical average ? Water storage in Meridian's Waiau catchment was below average at the end of May 2021 ? National electricity demand in May 2021 was 3.0% higher than the same month last year ? May 2021 was warmer than normal for most of the country. Rainfall was highly variable; it was dry in parts of the North Island while Canterbury experienced severe flooding late in the month ? Meridian made calls under the Genesis swaption in May and June 2021 ? Outages have been confirmed out to December 2021 on the Roxburgh-Livingstone line as part of the Clutha Upper Waitaki Lines Project ? New Zealand Aluminium Smelter's average load during May 2021 was 552MW ? Meridian's New Zealand retail sales volumes in May 2021 were 23.4% higher than May 2020 ? Compared to May 2020, sales increased in all segments: residential +5.7%, small medium business +49.2%, agricultural +1.4%, large business +11.1% and corporate +33.0% End CA:00373811 For:MEL Type:MKTUPDTE Time:2021-06-14 08:30:54