The project in the Hunter Valley, funded in the federal budget, attracted criticism from the Climate Council.

Trinity Anglican College student Natasha Kronenberg, 17, said "if the government wants to safeguard our economy, why not in industries that will last, like renewables?"

"The government should commit to 100 per cent renewable energy by 2030 and no new coal or gas," she said.

"We've already nearly completely destroyed our natural habitat in Australia, which is so unique.

"This fight has existed for twice as long as I've been alive.

"It shouldn't be our fight ... but we're here."

The Albury strike was organised in two days and took place outside the office of Farrer MP Sussan Ley.

About 20 school students, some of primary school age, were joined by members of the community.

Kofi Isaacs, who is running for the Greens in the Albury Council elections later this year, was part of the first school strike in 2018.

"I was still in year 12, just finishing up my VCE exams when the first strike happened in November of 2018," he said.

"We had about 300 people then, and there were 1000 at the next one and 3000 after that.

"We were planning for quite a big action around April of 2020 and of course, big actions were not the thing for that time.

"So we chose to stay home and it's really exciting that we can be together in person now."

Mr Isaacs, 20, hopes other young people will join the Border School Strike 4 Climate group to co-ordinate bigger actions and called on the government to take action.

"The federal budget that has just come out is a budget for billionaires, it's a budget for the lobbyists in front of them, not for the generations ahead of them or the soil beneath their feet," he said.

"It's funded a $600 million gas plant, because the market won't, because it's not viable.

"There's no reason to be building new gas plants - we should be building solar farms and wind farms."

"There are tens of thousands of people around Australia ... building the pressure.

"It's really important to have young people politically engaged so that they can see where they're going and how they can change their futures."

IN OTHER NEWS:

Farrer MP Sussan Ley responded to the group.

"I absolutely understand the intent of the protest, the only disagreement we really have is our method in getting to net zero emissions," she said in a statement.

"Putting more gas into the market will actually support the growth of renewable solar and wind power coming into the electricity system.

"One works with the other to help us keep lowering our emissions, bring down electricity bills but also have reliable power."

"Our government is already listening to the science and taking a multi-faceted approach to reducing our impact on a changing climate, and that is clearly reflected in this month's Federal budget both in our commitments and financing them."