248
A new liquid battery stores solar heat for weeks
(www.anthropocenemagazine.org)
This is a most excellent place for technology news and articles.
you get 1.6MJ/kg just by irradiating this thing, nothing else is needed and its storable for months as noncorrosive room temperature liquid
to make ammonia you need to have pv to turn light to electricity then make hydrogen out of it then make ammonia in haber process, each step generates losses and none are practical on small scale