The High Ambition Coalition (HAC) is an informal group of countries within the UN Framework Convention on Climate Change (UNFCCC) committed to advancing progressive proposals on climate ambition.
The HAC was founded by the Republic of the Marshall Islands in 2014 with the aim of ensuring the Paris Agreement, adopted in 2015, was as ambitious as possible.
The group succeeded in securing the Paris Agreement's most ambitious provisions, including the five year ratchet-up cycles of nationally-determined contributions, as well as language in Article 2 related to pursuing efforts to limit the temperature increase to 1.5 degrees Celsius above pre-industrial levels.
There is no official list of the group's members, but as of 2022, countries in the HAC include Antigua & Barbuda, Barbados, Chile, Colombia, Finland, Fiji, France, Gabon, Germany, Ireland, Jamaica, Luxembourg, the Netherlands, New Zealand, Norway, Palau, Republic of the Marshall Islands, Spain, Sweden, and the United Kingdom among others.
[3][4] The Coalition is currently chaired by Marshallese climate envoy Tina Stege.