New Zealand's Meridian Energy (ASX:MEZ) have released their monthly operating report for the month of May 2019 showing that June saw national hydro storage increased from 107 per cent to 122 per cent of historical average.
South Island storage sat at 129 per cent of average and North Island storage at 78 per cent of average on 13 June 2019.
Rainfall was well above average in the South Island and below average for much of the North Island.
National electricity demand in May 2019 was 2 per cent lower than the same month last year.
May 2019 was the third warmest May on record.
Shares in Meridian Energy (ASX:MEZ) are trading 0.24 per cent higher at $4.23.