Yesterday Radio NZ ran a piece about electricity prices.
It was promoted likes this:
The former head of the country’s biggest power company says electricity prices will fall to a third of their current level in a little over a decade because of the spread of solar power.
Keith Turner claimed in that interview that very soon a combination of solar power and batteries would be cheaper than grid power.
That may well be, but I am reliably informed that solar power currently costs about 20 cents/kWh and, further according to recent NZ research, it costs more than 50c to store surplus energy in batteries.
There is currently no technology on the horizon that can reduce the cost of solar power by a factor of 4 and battery storage by a factor of more than 10. Read more »