The Prime Minister says all options are on the table for tackling the energy crisis. 

Wholesale electricity prices have surged in recent weeks as hydro lake storage nears record lows. 

Christopher Luxon says he's pulled the industry together for discussions about rationing and transferring gas where it needs to go. 

He told Mike Hosking they're looking at a series of short term measures to ensure supply can meet demand. 

Luxon says the bigger question is what medium to long-term measures need to be taken to ensure energy security. 

On another note, the Prime Minister says congestion charging could boost productivity and clear up the roads. 

Transport Minister Simeon Brown has confirmed the Government's introducing legislation this year to allow for so-called "time of use charging". 

It'll allow councils to propose charges for using certain roads at certain peak hours. 

Luxon told Hosking congestion results in slower deliveries and other economic issues. 

He says if it's done right, congestion charges can result in an 8-12% reduction in congestion. 

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