The works of Emil Arnold Budde, which he has compiled and published here in "Energy and Law," are connected to the ongoing debate since 1895 regarding the physicality of electricity and the application of the concept of theft to it. Budde provides an introduction to the physical-energy aspect of the discussion, aiming to make potentially useful and informative principles of physics understandable to lawyers and economists. In the end, he presents initial ideas for legal protection in the energy sector. This is an exciting contribution to the history of energy and its physicality that Budde presents here. It is a carefully edited reprint of the original edition from 1902.