Zimbabwe Went Dark On Monday Night — ZESA Now Explains What Happened
ZESA Holdings has finally explained the nationwide blackout that plunged Zimbabwe into darkness on Monday night, 6 July 2026. The power utility said a major electrical fault triggered the collapse, cutting regional interconnections before local electricity generation was also lost.
The blackout hit at 6.24pm and affected power supplies across the country. ZESA initially confirmed the outage shortly after it occurred, but said its technical teams were still investigating the cause.
ZESA Explains Cause Of Zimbabwe Nationwide Blackout
In a technical update issued on Tuesday, 7 July, ZESA said the problem started on the Warren-Alaska 330kV transmission line.
ZESA said:
“At 1824 hours, a major electrical fault occurred on the Warren-Alaska 330kV line leading to loss of interconnections with neighbouring regional utilities.”
The power utility said the fault then affected Zimbabwe’s local electricity generation system.
It added:
“Subsequently local generation was lost due to voltage instability and under frequency.”
Earlier, ZESA had only described the incident as a technical fault on its network while engineers investigated.
The utility initially said:
“ZESA Holdings wishes to inform its valued stakeholders of a nationwide power outage that occurred today, Monday 6 July at 1824 hours due to a technical fault on our network.”
Eskom And Kariba Supplies Help Restore Zimbabwe Power
ZESA said restoration work started at 7.01pm, less than an hour after the nationwide outage began.
Engineers managed to secure electricity supplies from Eskom, Kariba Power Station and Hydro Cabora Bassa. Hwange Power Station Units 1, 2 and 3 were also brought into the restoration process.
ZESA said:
“We are pleased to advise that by 2200 hours, power had been successfully restored to most of our bulk supply points across the country.”
The utility said technical teams were continuing efforts to restore and synchronise the remaining units at Hwange Power Station.
ZESA Teams Continue Warren Substation Works
Work was also continuing at Warren Substation, which supplies parts of Harare.
ZESA said:
“Our technical teams are working tirelessly to restore and synchronise the remaining units at Hwange Power Station and to conduct works at the Warren Substation, which supplies parts of Harare.”
The latest update provided the first detailed technical explanation of the outage after the nationwide blackout disrupted electricity supplies on Monday evening. ZESA apologised for the inconvenience and said restoration work was continuing.
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