SBS consultancy is involved in exploring 0-energy retrofits for houses in Ireland and Scotland, following the experiences with massive prefab panel renovations in The Netherlands, known as ‘ nulopdemeter” or ‘Nillonthemeter’ (NOM) renovation schemes in The Netherlands .
A basic desciption of that proces is given in
NEW ENERGY RETROFIT CONCEPT: “RENOVATION TRAINS” FOR MASS HOUSING
Building Research & Information Volume 42 issue 6 2014, page 757-767.
more to follow , but if you are interested contact SBS centre, Ronald Rovers.