The Federal Parliament is running out of steam, with only three days left to pass legislation before it will be dissolved ahead of a general election.

Key points: After today, the Senate will only sit to debate on two days in April, when the budget is delivered

After today, the Senate will only sit to debate on two days in April, when the budget is delivered The Coalition is prioritising legislation relating to encryption laws and superannuation reforms

The Coalition is prioritising legislation relating to encryption laws and superannuation reforms The Government's current agenda does not leave time for much else

The Coalition is facing the prospect of failing to deliver on centrepiece policies, while independents and minor parties rush to do what they can before Parliament is officially a lame duck.

The House of Representatives has only a couple of weeks of sittings in Canberra before the election is due in mid-May.

But for legislation to pass Parliament, it has to go through both the House and the Senate — which has a sitting calendar even more limited than the House of Representatives.

After today, the Senate will only sit to debate and vote on legislation on two days — April 2 and April 3, when the budget is delivered.

"We're on our final couple of days and there is a lot to be done," Centre Alliance senator Rex Patrick told the ABC.

"We will get some legislation through, but unfortunately everyone is not so optimistic about the passage of legislation."

The Coalition is prioritising legislation relating to the encryption laws passed late last year and reforms to superannuation.

They may pass, but it will not leave time for much else.

The Coalition has repeatedly said lower power prices is a top priority, but Prime Minister Scott Morrison's "big stick" legislation aimed at power companies has been dropped down the agenda.

It is highly unlikely to be debated — let alone voted on — either today or when the budget is delivered.

The Greens' climate change and energy spokesman, Adam Bandt, was surprised by the move.

"At the end of last year they were gagging debate, trying to rush it through," he said.

"They told us it was going to come up this afternoon after Question Time and now it seems they've pulled it from the notice paper."

Adam Bandt was surprised by changes to the notice paper. ( ABC News: Matt Roberts )

The Greens had planned to move an amendment that would ban the Government from using public funds to underwrite coal-fired power stations.

Mr Bandt was confident there would have been enough support in both the Upper and Lower Houses for the amendment and was anticipating defeating the Government, as happened with the amendments on medical transfers for asylum seekers.

"Across the Parliament, there is support for an amendment that says, 'Don't support coal-fired power stations'," he said.

"If it's the case that this Government won't even bring on its legislation because it doesn't want the Parliament to attach a climate change amendment to it, then it's clear that the climate deniers are still running the show."