See Buildings website for a debate in progress, most interesting comment so far from Neil Jefferson of the Zero Carbon Hub: I think the principles of Passivhaus have provided a good steer for us, but for the UK climate and grid carbon intensity, it is very unlikely to provide a cheaper alternative to the emerging defintion for zero carbon new homes. Energy efficiency is the first and most vital component of carbon reduction, but Passivhaus as a minimum standard per se, is not the most cost effective solution.
Interesting comment from Kirk Archibald from Fairview Homes
[Comment From Kirk Archibald Kirk Archibald : ]
why does the definition of zero carbon include emissions from discretionary energy use? this is anlagous to asking car manufacturers to legislate for the way their customers drive; or where they manufature zero emission tailpipe cars, asking car manufacturers to contribute towards the decarbonisation of the grid. if the definition were restricted to regulted emissions, I suspect the industry would embrace this wholeheartedly.
And finally fromMark Elton of ECD
[Comment From Mark Elton Mark Elton : ]
Please find it within yourselves to give Passivhaus parity with Allowable Solutions. It is the only sensible strategy.