So what are our energy sources? We have 4... the sun, that provides photovoltaics, solar heating, fossil fuels, wind power is all... solar energy; Ea… - Bjarke Ingels

[I]n many ways... this idea of social infrastructure and the utilitarian and the social, and bringing it together into a... new hybrid... [F]or the poster... [T]en years ago I was so keen on getting some buildings built, that I didn't care about master plans because they took forever and they resulted in nothing, at least in the horizon that I could overview. Now that I an older and more patient, and I realize that two decades go quickly, I have more appetite for master plans... [T]here's a lot of things that can only be dealt with... on a... wholistic level at a certain scale... [W]e had an unfortunate encounter with ... and he had this idea of turning the site of two former factories at the base of into an experimental city, where we would look at studying the potential impact on cities, from advances in personal mobility, mobility as a service, autonomy, robotics, smart homes, ...creativity through AI, multi-generational, assisted living, hydrogen powered infrastructure, academic research and incubation... [W]e... started... to look at the typical city of today. ...[T]oday the street has... everything: bikes, cars, pedestrians. We thought, maybe... to tailor different... experiences: one street-only autonomous vehicles and pedestrians, one for mixed personal mobility... more like a promenade, and finally a park, only for pedestrians... [E]every third street varies, and leaves in both directions. You can... walk through the entire city moving only through a park, or only along a promenade. ...[T]he roofs are powering the city with building-integrated photovoltaics... [A]ll these different intersections between the three different kinds of streets allows Toyota and collaborating companies to test the Toyota connected city traffic management system. There's a matternet for the delivery of goods.

If you look at the different renewables, they've all gone down [in cost], especially solar; massively over that last half decade, except hyro, which has gone up... Hydropower currently provides only 3% of our power. It's believed that there's a bigger potential, but... not enough to provide the entire earth, but 71 of the countries on earth could... be delivering European living standard with the amount of hydroelectricity they have available. ...The biggest [35 TW-h/yr] hydro-station in the world, Churchill Falls in Canada... You could provide the same amount of energy with solar, with a much smaller area [102 km² vs. 7,000 km²].

Ideas migrate, structures grow and concepts develop in a form of architectural evolution.