There is actually an apparent upper limit on energy usage once countries reach a certain level of development. See for example [1] and [2]. Total energy consumption in Western countries has been level or dropping for years as devices that use energy become more efficient.

[1] https://www.eia.gov/todayinenergy/detail.php?id=39092

[2] https://www.euractiv.com/section/energy/opinion/eu-at-risk-o...