2018-09-19: In the study, much of the assumed transformation is achieved by near-universal digitalization. The authors focus on end-use energy services, suggesting that most of these could be delivered far more efficiently using microelectronics. Household and commercial electricity use could be slashed as multiple pieces of equipment are foregone for a smart phone—whose 5 Watt power consumption would substitute for 450 Watts of consumption from cameras, calculators, TVs, game consoles, DVRs, radios, scanners, tablets, stereos, alarm clocks, GPS, weather stations, video cameras, etc. Some of these uses have already been taken over by smart phones. Moreover, the authors assume that household appliances will all be connected to the Internet of Things, to allow for their optimal operation and seamless availability for demand response.
What’s not mentioned in the Grubler scenario is that universal digitalization would require a robust, dependable electricity supply and electronic communications network. This would entail substantial new infrastructure and electricity demand to accommodate data transmission, storage, and processing for nearly every piece of equipment on Earth. It would also require a great deal of copper. And it would all have to work together seamlessly 24/7.
but... industrial uses of energy (especially for high-temperature process like cement making) will be difficult to de-carbonize, and such processes figure into nearly all supply chains. The Grubler scenario excludes aviation and shipping from consideration.