As Rolls Royce issued the likely sites that it is considering for its small modular reactor nuclear power stations, it also took it first move into hydrogen – buying into a Germany start up which offers an innovative PEM electrolyzer. The latter deal was done by Rolls-Royce Power Systems and it will build the first demonstrator for this start up in 2023, using what the company calls a Hoeller stack. Rolls Royce will acquire 54% of the company Hoeller Electrolyzer, based in Wismar, Germany. Its early stage polymer electrolyte membrane (PEM) stacks are sold under the brand name of Prometheus – the god who stole fire and gave it to the humans. Rolls Royce could use this investment as a…