Electricity use of automation or how to tax robots?

While automation technologies replace workers in ever more tasks, robots, 3D printers, and AI-based applications require substantial amounts of electricity. This raises concerns regarding the feasibility of the energy transition towards mitigating climate change. How does automation interact with conventional capital in driving energy demand and how do taxes on robots and taxes on electricity affect the adoption of robots and AI? To answer these questions, we generalize a standard economic growth model with automation and electricity use. In addition, we augment the model with electricity taxes and robot taxes and show the mechanisms by which these taxes affect automation. We find that an electricity tax serves a similar purpose as a robot tax. However, a robot tax is much more difficult to implement from a practical perspective.