One of the problems that comes from reliance on solar power is the “duck curve” where the solar panels produce more power than is needed during the day, and standby power is needed in the evening when demand is high and the sun goes down. The common solution has been to turn on natural gas “peaker” plants to produce power when the needed in those few hours. But in Southern California, a big natural gas leak turned into what Melissa called an epic ecological disaster, sending utilities searching for an alternative to gas.

© If it looks like a duck ... California ISO

One of those alternatives that people dreamed about just a few years ago was giant batteries, and Elon Musk promised that he would make them in his new Nevada factory. What is really astonishing is that in just three months, Tesla has delivered a giant battery farm with 396 stacks of batteries that can provide enough electricity to power 15,000 houses for four hours, about how long it takes to shave the peaks, to kill the duck.

Even the experts are shocked at the speed this is happening at: According to the New York Times,