Power prices will be one of the biggest issues at the upcoming Federal Election.

Labor is promising a $150 rebate and the Coalition has their nuclear plan, but will either of these options actually get your energy bill down.

Senator Bridgette McKenzie told Peter Fegan on 4BC Breakfast, "It's all about supply and demand, if you get more of more energy, more electricity into the grid, prices will come down, that is a function of the laws of economics."

"We are absolutely clear that we will be getting more gas into the system, increasing the supply of energy, which means, obviously, the prices come down," Senator McKenzie said.

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