Is the LPG excise purely to repay the LPG-rebate?

[krzysiek]

With the LPG excise of 2.5c/L and increasing for a few years to come, does anyone know if they have passed this based on needing to repay the rebates given out to people? Or are they just taxing it because they can?

Because if they are taxing it (and have passed the bill) based on needing to repay the rebates, then how long will the excise stay in effect for? If it stays in effect for an indefinite amount of time, they're going to be getting much more back from the average rebate that they gave out.