Kingsnorth Power Station has partially reopened after it was shut down following an oil fire.
Two of the plant's four generators are now ready to supply the National Grid with power, while work is continuing to bring the remaining two back on-line.
A spokesman for power company E.ON said: "The power station is up and running but at a slightly reduced capacity. We're confidant about getting the full station running fairly quickly but it'll take a little while as we've got some building work to do."
An investigation is under way into what caused the blaze.
Fifteen fire engines from stations across Medway and beyond were initially deployed to fight the fire in a pump room at the site in Hoo around 7.25pm Saturday.
Five specialist appliances, including a foam unit, helped to tackle the fire. Kent Fire and Rescue Service scaled down its operations at around 10.45pm and left the scene at around 1am Sunday.
Only a skeleton crew was at work at the power station and no one was injured. The site was not evacuated.