> Take a look at California. Their grid is routinely, daily, generating ~84% of its power from renewables [1] (with ~25GW of existing solar PV capacity, ~6GW of wind, and ~6GW of hydro).
reply> ... Not everywhere is California, but solar and batteries are the cheapest form of generation in 90%+ of the world [5].
... Then why is electricity so expensive there compared to the US average?
It's not. California has the cheapest wholesale electricity prices in the country. It's the only place in the country with a wholesale rate below $100 / MWh, and California is way below $100.
replyhttps://cleantechnica.com/2026/05/30/california-lowest-whole...
Retail prices are of course super high in California, but that has nothing to do with generation.
Why is there such a disconnect?
replypolitics. Supply is cheap, but California has a corrupt relationship with the monopoly provider, and lets them get away with bundling all kinds of costs into the distribution charge. fire rebuilding, social projects, decades of infrastructure neglect from previous corruption.
replyGo and compare the rates from a non-pg&e distributor (eg SMUD in sac) and you'll see, supply is cheap enough and it doesnt have to be this way.
A distribution grid for 40 million people in a high fire risk geography [1]. Renewables drive down supply costs, but not distribution costs (unless you can go off grid, etc). They could also improve costs by nationalizing PG&E (I argue, cutting out shareholder returns and excessive management comp), but that is an argument for another thread [2].
reply[1] https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...
[2] "Where’s all the f&$#ing money going?" The Waste and Costs of American Utilities - https://www.thebignewsletter.com/p/wheres-all-the-f-and-ing-... - May 22nd, 2026