Introduction
Background
In late 2018, the Intergovernmental Panel of Climate Change (IPCC) scientists repeatedly underlined the fact that in order to avoid catastrophic climate change and a radical change to our present-day way of life, the warming in climate must be limited to 1.5 degrees Celsius when compared to pre-industrial era levels. \cite{ipcc2018}. Politically, this will require drastic \cite{Tollefson_2018} action and collaboration on an unprecedented scale \cite{Haberl_2009,Gielen_2016,Grubler_2012,Peters_2012}, but more importantly, it needs to be underpinned by a sustainable transition to renewable energy for all societal services \cite{Child_2018}.