The Economist magazine just held a webinar on energy. I thought it was very reasonable, not wishful thinking about a carbon free environment. It touched on most of the important technologies, including nuclear and hydrogen. It did not mention the difficulty of rebuilding the electrical grid to handle the new sources of energy — solar and wind — that do not fit well in the current grid, which was built to distribute energy produced by huge fissile fuel plants in industrial areas.
I highly recommend this webinar if you can find a recording of it.