The article does make an interesting point on our energy usage. As an industrial society - we hit the limits of scaling energy output sometime in the 70s. With

The article does make an interesting point on our energy usage. As an industrial society - we hit the limits of scaling energy output sometime in the 70s. With the majority of gains coming from improved efficiency as well as incremental expansion since then. Conceivably, if solar continues its price trajectory - we could see a world where new large scale projects are started.