Carter had a solid plan to simply curtail the growth in demand of fossil fuels with the realistic goal of ending oil imports by around the year 2000. Energy efficiency and getting sunbelt buildings to reflect infrared heat back out. This whole climate crisis has been fueled by our economic system of short term goals, a belief in infinite growth on a finite planet and finally from debt based money creation. All our money is created at debt but the annual interest is never created. This fueled the global slave trade, colonialism, mega wars and other exploitative and extractive economic endeavors at the expense of sustainability.
That being said the most promising tech is reflective and emissive paints, I saw an abstract awhile ago where they made these 8 nanometer spheres that converted heat into an infrared frequency that escapes our atmosphere. Now this won't reverse warming but it can reduce peak energy use and it has even been shown to help keep buildings warmer in the winter by pulling heat into the walls and then somewhat into the structures from the ground.
Here are a few articles about the general idea. I hate how some big oil corp or AC manufacturer can buy these tech from the schools and stall it's release until it can't be patented and just gets ignored. This happens again and again. A simple way I explain it is Penicillin went out of patent in the 1940s and Mickey Mouse from the same time period still has copyright protection.
https://www.science.org/doi/10.1126/sciadv.aaz5413
https://www.scielo.br/j/po/a/dkmgYstmPR4rXwcTmxpLKrw/