There are startups in NSW/Canberra that are working towards doing exactly what you're talking about. I know for a fact that hardware from these two companies is

There are startups in NSW/Canberra that are working towards doing exactly what you're talking about. I know for a fact that hardware from these two companies is based on off-the-shelf Raspberry Pis and Beaglebones. https://www.switchdin.com/ https://www.switchdin.com/ https://youtu.be/FKqmj6oUY4g https://youtu.be/FKqmj6oUY4g https://repositpower.com/ https://repositpower.com/