[dehrmann]

Someone at the utility went through the same math you are and decided it isn't worth it at scale. It's probably not worth it at small scale.

[ZeroGravitas]

The UK is world leading in battery rollout because someone did the sums and decided it did make sense at scale.

[dehrmann]

Or it is! And they can do it cheaper at-scale than you can.

[beng-nl]

Back of the envelope I did one time told me i could earn more by picking up cans off the street and trading them for the deposit.

Still, it would feel nice - after the initial cost- to have very cheap power (only charge when cheap).

[crote]

There is no such thing as "the utility" in Europe. It is legally not allowed for a single company to both operate (parts of) the grid and trade in electricity.