AC power suits sprawling O.B-cities reliant on REMOTE power generation   

DC power suits compact O.A-cities with ON-SITE power generation

The early days of electricity generation sparked a huge rivalry – known as the  “War of the Currents” between Thomas Edison (DC) and Nicola Tesla (AC).  The war was won by AC, mainly because DC is unsuitable for long distance transmission.

OASIS-CITIES COULD BE DIRECT-CURRENT CITIES

Although AC power still predominates, computers, LEDs, solar cells and electric vehicles all run on DC power. With “on-site” power generation – and thus independence from the power grid – OΔCities could be run entirely on safer and more efficient DC power 

AC disadvantages 

• • Heavier, more complex generating equipment
  • Power loss thru transformers, sub-stations, and transmission lines
  • High extra cost of the above
  • Loss of power via heat due to the oscillating motion of AC   
  • DANGER (high voltage)

DC advantages 

• • More efficient for Micro-Grids
  • Constant voltage, no surges, less likely to damage equipment 
  • Less power-loss from resistance (short transmission distances)
  • Can be stored in batteries
  • SAFER (low voltage)
  • Transmission equipment is simpler and less expensive
  • All energy storage devices – batteries, flywheels, compressed air, etc, are based on DC

 DC power is produced by Solar panels, Wind turbines, and all renewable-energy systems