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Dedicated electrolysis of solar should use curtailed profile #3280

@mabijkerk

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@mabijkerk

Background
In a blank scenario, when you set 1000 MW of hydrogen output capacity for the dedicated solar electrolysis technology, the hydrogen output curve clearly shows hydrogen output peaks of > 1000 MW.

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Issue
The reason for this seems to be that the electrolyser uses higher full load hours than the solar PV plant that is coupled to it. Roughly 1800 instead of 870 FLH. This is because we assume some level of curtailment on the solar PV plant, meaning that the electrolysis can be underdimensioned and therefore have higher FLH.

We however don't use a curtailed profile, but the original solar PV plant profile.

- hydrogen.group = dynamic: solar_pv
- hydrogen.type = producer
- hydrogen.subtype = volatile

This means that the original profile is scaled to roughly twice its intended height. The of the original solar PV profile for 1000 MW is about 700 MW, so doubling it leads to the 1400 MW capacity shown in the chart.

Solution
Ideally, we would thoroughly restructure the modelling of dedicated electrolysis, as discussed in this Basecamp post. A quicker solution for this specific issue might be to add a curtailment profile to the electrolyser that matches the curtailment specified in solar PV plant node.

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