Is this the future: homes covered with algae that use sunlight to generate enough energy to heat every room in the house?

In one town in Germany, it’s not so much the future but the present. A unique building in Hamburg ‘wears’ around 200 square meters of algae covered panels. When sunlight falls on the Bio Intelligent Quotient (BIQ) building, photosynthesis causes the microorganisms in the algae to multiply and give off heat.