Once again I have waded (ha) into the duck curve and solar in California. Solar "duck curves" are getting deeper and deeper in California as more solar power gets added onto the grid - with consequences for transmission, batteries, and rooftop PV. www.washingtonpost.com/climate-envi...

Rooftop solar panels are flooding California’s grid. That’s a problem.

As electricity prices go negative, the Golden State is struggling to offload a glut of solar power.

CAISO tells me that they were prepared for a growth in solar -- they had been warned, in part, by NREL modeling from the late 2000s. But "We drastically underestimated the speed at which residential solar was going to come in" said Clyde Loutan at CAISO.

Any other states/regions that might start having this issue soon?

I'm curious where the 47 GW of solar came from. I would have thought it was closer to ~35 GW.