This article seems to believe we will either be at net zero, or exactly the same as today in 30 years.
That seems unlikely. New technologies are always arriving. Will they get to net zero, no, but I am certain out energy production will be very very different in 30 years than it is now.
And fossil fuel technology improves too. Nobody 30 years ago saw fracking very efficiently pulling both oil and natural gas out of grounds that before were thought to be too cost prohibitive to drill for oil.