Federal parliament is currently debating the Morrison government's planned changes to the Clean Energy Finance Corporation, which will ultimately get the ball rolling on its plan to invest in gas projects.

The bill sets up the Grid Reliability Fund underneath the CEFC and puts Energy Minister Angus Taylor in charge of deciding where the taxpayer money goes.

Labor wants that changed, saying the independent body should not be beholden to Mr Taylor.

"The CEFC should not have its independence and the integrity of its investments compromised by a government that simply doesn't believe in the value of clean renewable energy," opposition MP Ged Kearney told the lower house on Tuesday.

"When it comes to renewables and energy production more broadly, when you follow the expert advice and when you follow the science, the economic benefits follow."

Labor's energy spokesman Chris Bowen will introduce a handful of amendments to the bill, to ensure the CEFC remains independent, does not invest in fossil fuels, and puts money towards projects with a return on investment.

Mr Bowen says gas will play a role in Australia's energy system for the foreseeable future until other options are available to support renewables.

"But that is not going to happen today or tomorrow, so we're going to need gas in the system," he told parliament.

"It has a role to play and it's important, but it is not a low-emissions technology, and the government is engaging in sophistry by suggesting that it is.

"Changing the definition to allow investment in gas flies directly in the face of the CEFC's mission, which is to support renewables generation."

It comes as a new competition watchdog report shows Australians are still paying more for local liquefied natural gas compared to overseas customers.

Australian Competition and Consumer Commission boss Rod Sims says that's not good enough.

"LNG producers have not provided an adequate explanation as to why this is the case, or why we should accept it."

The report also showed that while east coast gas supply is expected to meet demand this year, a shortfall is expected by 2024.

"It is concerning that the risk of a gas supply shortfall in Australia's southern states continues, despite this having been a looming issue for some time," Mr Sims said.

"It is crucial that investment decisions are made now to ensure there's enough supply, and to provide downward pressure on future price rises."

Australian Associated Press