I don’t know when fusion will come through.
Its important however to keep plugging away at it even if progress is slow—because the results are so profound.
4th generation nuclear reactors however will come onstream much more quickly. The first ones were actually done back in the 1960’s. they had working models working properly that were abandoned because of politics. the next working models will come out in the early 2020’s. the beta’s will produce electricity for .03@ kilowatt. subsequent models will quickly take prices down to to .01@ kilowatt. this is what causes the next big industrial revolution.
I don't care what pushes my transportation down the road as long as it is dirt cheap and available. Petroleum, wind as in a sail, an electric motor, etc.
Nuclear is our future. And a serious upgrade to the power grid will be necessary to transport all of that “clean” power from the nuke plant to our homes and the gas/charging station.
Also, it is too bad that we still use steam to drive turbines to generate electricity. It is too bad that there isn't a process for moving electrons directly from a power source. Maybe a photocell tuned to the wavelength of energy produced from a nuclear fusion process which is probably the visible spectrum or infrared to ultraviolet— well, the spectrum of the sun. Your standard photocell is not that efficient. But it might be (or will be) as efficient or more efficient than a steam conversion process.