[6] After the Liberal Party entered the Solberg Cabinet, Elvestuen was appointed minister of climate and the environment on 17 January 2018, succeeding the Conservatives' Vidar Helgesen.

[7] In April 2018, he announced that the government would be adding 2 million NOK to the "Fishing for litter" scheme for 2018, in response to plastic being discovered at a bird mountain in Runde.

[9] In October, he praised Mattvett and Findus' advertisements at the Oslo train station, which showed that 335 000 tons of food is wasted a year.

[10] In May 2019, Elvestuen expressed his disagreement with his Brazilian counterpart, Ricardo Salles, who had stated that Norway's billion contribution to the Amazon rain forest fund was futile.

Elvestuen refused to comment Jensen's recollection of him, but notes that there was hard fighting for many issues such as climate change, nature and drug reform.