The Energy Minister's after a please explain after the lights went out for thousands of customers on Monday night, as there was not enough power to go around.
Households were plunged into darkness when power generators deliberately pulled the plug to manage electricity demand which had reached an all-time high.
Transpower says it warned of a potential shortage and appealed for power generators to power up, but the grid was still short, raising questions about whether some companies were simply trying to push up the price by keeping supply tight.
Energy Minister Megan Woods told Checkpoint she is not scapegoating Genesis, but its third rankine at Huntly was the "critical piece that could have been turned on quickly".
