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Fix price set to VoLL when the most expensive dispatchable is used to meet flexible demand #1295

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antw
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@antw antw commented Nov 10, 2022

Merit has been adjusted so that the price is only set to €3000 when there is insufficient capacity to meet inflexible demand. Previously, if the most expensive dispatchable/flexible producer was fully-loaded, we'd treat that as a deficit. That's not correct as we now have flexible consumers; it's possible for the most expensive dispatchable to be fully loaded without this being a loss of load event.

These screenshots were taken from a local scenario, and may not exactly match the version on production. In my scenario, the number of hours at €3000 exactly matches the number of blackout hours (which is to be expected since a blackout is inflexible demand > production).

Before After
b-1 a-1
b-2 a-2
b-3 a-3
b-jan a-jan

Closes #1286

Fixes that only unmet inflexible demand should cause the fallback price
to be used when constructing the price curve.
@mabijkerk
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Very nice work! When I run the scenario locally I get don't get any blackout hours, nor any hours where the price is 3000 euros/MWh.

@mabijkerk mabijkerk merged commit be691e4 into master Nov 11, 2022
@mabijkerk mabijkerk deleted the 1286-electricity-price-is-set-at-voll-unexpectedly branch November 11, 2022 08:46
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Electricity price is set at VoLL unexpectedly
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