California secretly struggles with renewables

California has hooked up a grid battery system that is almost ten times bigger than the previous world record holder, but when it comes to making renewables reliable it is so small it might as well not exist. The new battery array is rated at a storage capacity of 1,200 megawatt hours (MWh); easily eclipsing the record holding 129 MWh Australian system built by Tesla a few years ago. However, California peaks at a whopping 42,000 MW. If that happened on a hot, low wind night this supposedly big battery would keep the lights on for just 1.7 minutes (that’s 103 seconds). This is truly a trivial amount of storage. Mind you this system is being built to serve just Pacific Gas & Electric. But they by coincidence peak at about half of California, or 21,000 MWh, so they get a magnificent 206 seconds of peak juice. Barely time to find the flashlight, right? There is no word on what this trivial giant cost, since PG&E does not own it. That honor goes to an outfit called Vistra that does a lot of different things with electricity and gas. But these complex battery systems are not cheap. This one reportedly utilizes more than 4,500 stacked battery racks, each of which contains 22 individual battery modules. That is 99,000 separate modules that have to be made to work well together. Imagine hooking up 99,000 electric cars and you begin to get the picture...MORE