Energy: what is pink hydrogen?

Self-tutoring about energy developments: the tutor mentions pink hydrogen.

When hydrogen is produced industrially, its colour describes the process whence it comes.

Pink hydrogen comes from electrolysis of water, powered by nuclear reactors. It may also be referred to as red or purple hydrogen.

Since hydrogen is a carbon-free fuel, its production by nuclear energy is seen as positive in the sense that it may move the world towards net-zero.

If the same process is powered by solar or wind-generated electricity, it produces green hydrogen.

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