[akamaka]

The diminishing return happens when you have so many solar panels that on a sunny day you generate more than 100% of the electricity you can use. Maybe that situation is great if you want to subsidize solar panel factories, but you get less usable kWh for the same cost.

It’s completely expected for Europe’s installation of solar panels to begin tapering off as they get more return on investment by installing battery storage and decarbonizing other parts of the economy.

[mrtksn]

Then you store that energy or find a way to use it. Melt ore when its abundant, then make metal when it is abundant, then dig holes when it is abundant, then use the metal to turn the hole into a reservoir when it is abundant and eventually use the reservoir to pump in and out water as a way to store the abundant energy for use when its not.

[akamaka]

We’re working on it!

https://www.ess-news.com/2025/09/10/new-alliance-aims-to-unl...

[ifwinterco]

All of these things are an order of magnitude more difficult and annoying than simply storing flammable gas or liquid in a tank and using it whenever you need it.

Not saying we should continue using fossil fuels forever, but being unrealistic about how hard the transition to intermittent renewables will be isn't sensible

[crote]

On the other hand, the additional solar capacity during overcast days might still be worth the additional investment.

Electricity might become free on sunny days, but you'll still have to pay serious money for it during cloudy windless days. Even a solar panel operating at 10% capacity becomes worth the effort.