As building energy standards become more demanding, we need design tools that allow these to be considered early.
At least in the UK, Passivhaus and PHPP are regarded as being one of the most robust and longstanding.
However it is still a struggle to get solid transfer of data to PHPP to allow it to be used as a 'live' design tool.
Some kind of 'Live Connection' such as with Grasshopper, would allow the technical performance and design to be combined more seamlessly. PHPP is recognised as a 'gold standard' tool in many markets, so it would make sense to support it as we move to more demanding climatic conditions (design for shading/solar gain etc) and stringent energy standards where early design decisions are making more difference.
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