[dirtyaura]

There is. Constructing nuclear power at the same rate as France did successfully in 70s and 80s would be a big part of the solution.

France constructed 40+ reactors for population of 60 million in ~20 years. If we did same everywhere, we could build ~9000 reactors in 40 years. If one reactor would be on average 1000MW, producing roughly 8TWh yearly, we would get 72000TWh from the nuclear power alone. That is about a half of world's current energy production (155,000TWh).

This would be of course a gigantic political and engineering project, but no major new scientific or technical breakthrough would be needed.