Spike in LCOE is merely because of interest rates. Which hits solar the hardest as it doesn't consume fuel and it's maintenance costs are very low, so almost all of the LCOE is cost of initial capital investment stretched out to 20 years by applying the interest rates, which are high.
No need to look for doom scenarios here. Interest rates fluctuate. They will be back to some lower point than today but certainly higher than in 2020. LCOE will drop off.
There's no need for solar costs to go down at all anymore. Transition will happen even if they get stuck forever, solar is cheap enough, now it's just about speed at which factories can be deployed, installers trained, etc.
No need to look for doom scenarios here. Interest rates fluctuate. They will be back to some lower point than today but certainly higher than in 2020. LCOE will drop off.
There's no need for solar costs to go down at all anymore. Transition will happen even if they get stuck forever, solar is cheap enough, now it's just about speed at which factories can be deployed, installers trained, etc.