The risk of outages, as well as routine power plant maintenance, have strained NSW energy supplies this week, with Mr Kean urging residents on Wednesday to reduce usage, stoking fears of power shortages.
The Australian Energy Market Operator this week for the first time took control of directing supplies from energy generators to the east coast power grid until further notice.
NSW Premier Dominic Perrottet on Friday confirmed Mr Kean now had more power to intervene in the market to shore up state energy supplies.
The new powers will reportedly give the Perrottet government the ability to force coal companies to supply power generators with fuel.
"These are steps that we've taken just as a precautionary approach," Mr Perrottet said in Canberra.
"These aren't new approaches, we've done that in the past and the advice we have at the moment is that ... he can direct if he needs to."
The latest advice to the government is that the state's power system is stable and reserve conditions will improve through Friday.
Asked about Canberra's role in solving the crisis, Mr Perrottet said each state faced energy challenges but the federal government should coordinate responses nationally.
"The national cabinet certainly has a role to play," he said, head of the meeting of state and territory leaders in Canberra on Friday.
Pressure on the grid is expected to ease from Friday and through the weekend, as more power units come back online.
Federal Energy Minister Chris Bowen has said AEMO's decision to take control of the market was the best option for households.
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