Bio-adaptive facade grows algae, creates shade and energy

People who live in glass houses should use a bio-adaptive facade and grow algae? The algae is grown by the sun and creates biomass that can be used to create energy, as well as excess heat for warming, and shade as well. This test house will be in Germany, where it gets cold. I wonder, how the algae will fare in freezing weather? All in all though, this is a fascinating and innovative idea.

A zero-energy house under construction in Germany is set to provide the first real-life test for a new façade system that uses live microalgae to provide shade and generate renewable energy at the same time.

I read once about a house in Maine built in Maine that used passive heating techniques and serious insulation to such an extent that the heating system hardly ever needed to be turned on in winter and it didn’t use that much wood either.