Energy systems inevitably change and develop over time; the systems of today are the result of many years of incremental development. To be able to live sustainably, we need to drastically reduce our fossil fuel consumption worldwide by improving end-use efficiency, conversion efficiency and by introducing renewable resources. The energy transition requires new systems, new technology, new and expanded networks, new storage systems. Inevitably, these require investments – in equipment, but also in education, knowledge, to teach people how to build and use them...