British architect Dave Edwards has proposed an algae-covered, mixed-use, conceptual FMSA Tower which would produce its own energy and clean water. The outer "green wall" would contain algae that absorbs CO2 emissions and harvests bio-methane for conversion into heat and power.
Waste biomass would feed the building’s skin while waste water would be recycled through the algae, dezeen reported. The skin would grow not only algae but also plants which would yield food for the inhabitants of the tower.
"A ground source heat pump would store summer heat and enable surplus heat from the waste biomass and from London Underground to be circulated through the tower in the winter," dezeen writes.
FMSA Tower is designed for a site in the City of London, also called The Square Mile, and proposes to combine traditional skyscraper programs with the new. "The area is characterized by a lack of residential space and is heavily urban, lacking open spaces and programmatic and bio-diversity that defined London at the beginning of the 21st century," the architect wrote in the project description. "The tower seeks to reintroduce a diversity of programs and bio-diversity in this barren part of London."