The NZ ambition to replace internal-combustion engines with electric cars

Ever wondered what’s inside the famous Tesla battery? More batteries. Thousands.

— by Dr Michael Kelly,
University of Cambridge, UK.

May, 2020.

Next time you stand for 90 seconds filling your petrol tank, you might think of the enormous energy flow. Chemical energy is entering your tank at typically 17 million joules per second, or a gigantic 17 megawatts.

That’s equivalent to the energy given off by 17,000 one-bar electric heaters (imagine 6 tennis courts covered in them) or 24 hours of average power consumption (24 kWh) for 700 New Zealand households. A full tank (about 1,500 megawatts) would run those 700 houses for three full months. Continue Reading →