> Producing ammonia via the Haber process means losing 40% or so of the energy This seems wrong. I believe that green HB process would be 80%-90% efficient sin

> Producing ammonia via the Haber process means losing 40% or so of the energy This seems wrong. I believe that green HB process would be 80%-90% efficient since the heat is re-used? I have read conflicting papers. Of course, HB is still a capex-heavy process. Maybe the 40% number is for fossil methane to ammonia?