Re-purposing the world’s coal-fired power stations.

[Stan]

This highlights new ways to store green energy before using it to raise steam for existing electricity generation systems.

[nowty]

I have two in my house, they are called storage heaters.

[spread-tee]

Another neat idea, good to re-use as mush existing infrastructure as possible, and retain many jobs

Desp

[spread-tee]

I have two in my house, they are called storage heaters.

you don't melt them though with all your PV do you??

[AE-NMidlands]

Using the phase change / latent heat of the aluminium-contained-in-graphite is clever, and re-using existing (big) plant and grid connections should clinch the viability, besides doing wonders for the carbon footprint of the project.
A