energy

You keep flipping between efficiency vs capacity factor, and PEM vs alkaline electrolysers. You're also paltering by talking about volume (hydrogen has much lower energy per volume). The usual proposals are15-20% by volume or 5-8% by energy.

If the electrolyser is your storage for 10% CF solar, then it is operating definitionally much less than 10% of the time (ie. The amount of time it's curtailing)

At 50c/W installed, then per watt of output energy your cheap platinum-free alkiline electrolyser and compressor system running at <35% efficiency 5% of the time costs $25/W of time averaged delivered heat or around $75/W of final energy (as electrification of most functions is at least 3x as efficient). This "free curtailed energy hydrogen" costs more than even the most corrupt and over-budget nuclear project.

This is completely ignoring storage as well.

The idea is ridiculous, and anyone claiming we should take it seriously is very obviously shilling fossil gas.

If "we haven't built it yet" is a valid objection to batteries or v2g, then it's also a sufficient reason to dismiss gas blending out of hand.

Your argument is definitely in bad faith. Please leave and never come back.