1995–1998 Assembly Two Greens candidates, Lucy Horodny and Kerrie Tucker, were successful at the 1995 election, the first to be run under the Hare-Clark system.

The election resulted in a hung parliament, but the Liberal Party was able to form government with two independents.

Deb Foskey was the sole Greens member of the assembly, in which the Labor Party held the majority.

2016–2020 Assembly Shane Rattenbury retained a seat in the expanded Legislative Assembly at the 2016 ACT election, and held the ministerial portfolios of Climate Change and Sustainability; Corrections and Justice Health; Justice, Consumer Affairs and Road Safety; and Mental Health.

On 10 November 2023, member of the Greens Johnathan Davis was stood down from his duties as an MLA and referred to police by the ACT Greens after allegations he had sexual relationships with a boy under the legal age of consent (16-years old in the ACT) and a teenager who was a legally still a child, under 18 at the time.