What sort of U-Value you offering and do you take embodied energy/carbon into account when comparing?
And it is not really a low energy wall, a very cold wall would be low energy, low thermal loss would be a better description.
When we get it up and running properly the aim is to offer 0.11 for the cost of traditional construction.
It is low energy because that level of U-Value with the correct construction techniques will require little in the way of additional thermal input. It just depends how the property is constructed and it is only one element in a complicated jigsaw.
Edited by joiner, 21 January 2015 - 07:19 AM.