Investors Rob Keldoulis and Marcus Catsaras were the biggest backers of teal fundraising vehicle Climate 200 last financial year, alongside a 94-year-old grandfather who matched donations up to $1000 for each year of his life.

After record contributions drove Donald Trump’s re-election as US president in November, the release of Australian Electoral Commission donations data on Monday is expected to show Mr Keldoulis and his company Keldoulis Investments donated a combined $1.1 million to Climate 200.