What is the duck curve?
Here’s a super quick crash course on the electric grid: When you plug in a kettle or turn on your air conditioner, you add a little bit of load to the electric grid. This causes the voltage on the grid to drop by a tiny amount. If enough people do that at the same time, the operators of the grid respond by asking power plants to generate more power. This also works the other way: if power plants are cranking out more electricity than customers are using, power plants are asked to dial their power output down, or even shut off completely.