She was nominated by three Norwegian MPs.
Hirsi, who lists on Twitter page that she is the head of the Minnesota High School Democrats and several other left-wing youth-based organizations, said in a recent interview with Grist that she is looking to "change the conversation" on issues such as the Green New Deal by organizing the strike.
Pakistani activist Malala Yousafzai in 2014 became the youngest victor of the prize, at the age of 17. What started as separate acts of absolute refusal - Thunberg's 2018 one-person protest outside the Swedish parliament the most prominent - has become a global movement.
"We have nominated Greta because the climate threat may be one of the most important causes of war and conflict", parliamentary representative Freddy Andre Oevstegaard told Norwegian media outlet VG. "Greta Thunberg has launched a mass movement which I see as a major contribution to peace".
However students from schools in many towns around the country are also planning local demonstrations.
So far, there have been regular walkouts around the world, including in countries likes Germany, Belgium, the UK, France, Australia and Japan.
School students of all ages will take to the streets of Wellington on Friday as part of the global School Strike 4 Climate protest.
Malala Yousafzai now holds the record for youngest Nobel laureate after she won the Nobel Peace Prize in 2014 at the age of 17.
She continued to gain worldwide attention after speaking at the UN Climate Talks in Poland in December and at the World Economic Forum in Davos in January.
"For over 30 years, politicians around the world have failed to address climate change and it's now nearly too late".
This year's Nobel Peace Prize has 304 candidates, of which 219 are individuals and 85 organisations, the Norwegian Nobel Committee reported last month.
How is the Nobel Peace Prize nominated and chosen?
The names of nominators and nominees are not normally made public until 50 years have elapsed, it adds.