This is actually talked about on every HN energy thread and it’s now incorrect, particularly about batteries.
Solar has supply bottlenecks at the moment that are stopping further price declines- hopefully they will get solved.
But there’s a lithium shortage that is already showing up in the price of lithium going up 5x. Analysts predict that by around 2025 lithium will limit the battery market that is trying to grow 40x to meet electrification demands [1]. Note that opening a new lithium mine takes a minimum of 7 years. sodium based batteries are coming to help this situation, but they are a new technology that will take time to productionize and ramp up.
Over the course of 10-15 years, I don't think you're correct. Solar is (in my opinion conservatively) expected to drop by 34% by 2030 [0] and, though I'm having trouble finding anything that spells it outright, demand and production of batteries is projected to increase dramatically that will, in my opinion, most likely allow for production efficiencies to reduce cost.
Even the video you link claims to be 'bullish' on production. I didn't see any claims about price in the future, just production, though I might have missed it.
In my opinion, we're seeing a lot of 'whiplash' effects from the supply chain issues but, as the pandemic recedes, these should resolve in the next couple of years.
I am quite bullish on long-term battery production as well. But I recognize that we are heading for some pain in the near-term where supply will not keep up with demand.
I like that solar analysis, but I also think it is possible that the high demand for solar and high commodity (energy, etc) costs could continue to stop solar prices from dropping for much of this decade just as we have seen recently.
The temporary whiplash concept for inflation hasn't panned out yet. I follow Lyn Alden's economic analysis closely and she has been predicting this decade to be inflationary. These predictions started over a year ago when the Fed kept saying that inflation was temporary.
Solar has supply bottlenecks at the moment that are stopping further price declines- hopefully they will get solved.
But there’s a lithium shortage that is already showing up in the price of lithium going up 5x. Analysts predict that by around 2025 lithium will limit the battery market that is trying to grow 40x to meet electrification demands [1]. Note that opening a new lithium mine takes a minimum of 7 years. sodium based batteries are coming to help this situation, but they are a new technology that will take time to productionize and ramp up.
[1] https://youtu.be/5v-DTS-ibow