The real problem is that the demand models did not account for a worsening climate at the pace that it is encountering record hot days. Though for that matter, almost nobody accounted for that, so it's hard to blame the grid planners too much.
https://www.energy.gov/oe/activities/technology-development/...
You could also ask people to reduce electric range cooking, electric dryer usage, etc, but that can be harder to describe and offer more inconvenience.
Also, most people with an electric car probably have another mode of transportation they can switch to.
TLDR Build more renewables, transmission, and battery storage; shift flexible loads to when renewable power is generating.
[1] https://app.electricitymaps.com/zone/US-CAL-CISO?wind=false&...
[2] https://hn.algolia.com/?q=california+solar+canals
[3] https://old.reddit.com/r/solar/comments/x0wih4/california_mo...
[4] https://www.caiso.com/Documents/BriefingonRenewablesandEnerg...
Maybe they do maintenance at night and thats why they don't have excess capacity as one would normally expect?
If someone wants to dig into it, here's the data: https://www.caiso.com/TodaysOutlook/Pages/default.aspx
/s
(Yes, I realize that northern California can be snow-bound in the higher elevations)
Seriously though, I watch a few builders on YouTube, and the amount of insulation they put on spec homes is the minimal amount they can get away with. A shame, considering how you can get a home well enough insulated that you could heat it in a Canadian winter with a hair dryer.
My uninsulated 1930s house in Ohio holds heat better than my friend's Palo Alto apartment.
Say, after salary, taxes, food you have 1000 euros per month that you can spend. There are two houses, where in one, you can spend 500 on mortgage and 500 on energy bills, and in the other, you can spend 700 on mortgage and 300 on energy bills.
But if you just buy the house that has 500 on mortgage because "it's cheaper", it's not actually cheaper in total.
This should also interest banks that give people mortgages.
Also, if you rent that house out, if the energy cost is directly part of the rent, the house with the higher energy cost has a higher rent, hence it's less attractive. Again, market forces. So in reality, you can get more profit out of the house that has the lower energy cost, because in reality, the cost is not be passed directly to the renters.