As more than two-thirds of us will be living in cities by 2050, scientists and tech firms are looking at new ways to harness renewable energy within the built environment. But at what cost? One day, your office windows will be harvesting energy from the sun, while the lamp-post down in the street is storing energy in its concrete. Vertical wind turbines will spin as traffic whooshes past, and pavements and roads will generate small amounts of energy from all those commuter feet and heavy buses and lorries pounding down them. Fleets of driverless taxis will give back surplus energy to the grid, and cities generally will make much more efficient use of the energy they consume. That, at least, is the vision of many technologists, environmentalists and city planners.
BBC 6th Nov 2018 read more »