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CO2 captured installed capacities (MW)
======

*indexed by: asset, energy, node, technology and test case*

### Description

This KPI displays the installed production capacity of every co2 captured producing asset. The way in which this capacity is calculated depends on the type of asset under consideration, whether it is optimised or not.

For a non-optimized asset, this KPI returns directly the fixed capacity of the  asset, which an input. 
For an optimized asset, the value displayed is the optimization result obtained for the capacity variable of the asset. 

Finally, for an asset optimized across a pathway study, this KPI returns the installed capacity at the end of the previous period plus the additional capacity installed during the current period minus the decommissioned capacity during the current period.

<blockquote class="custom-hint">
  <h4>Modelling hint</h4>

  This KPI enables to visualize the nominal installed capacity. In many cases, the actual production capacity at each timestep does not correspond to the nominal capacity of the asset because its availability is not 100% throughout the entire period under consideration. 
  This available production capacity at each timestep can be visualized in the temporal KPI [CO2 Asset production](../temporal_kpis/co2_asset_production.md)
</blockquote>

### Calculation 

The equation below is valid for any realization and is therefore implicitly indexed by test case. 

Let be $x_{a, n}$ the co2 captured installed capacity returned by the KPI for a given asset $a$ producing co2 captured 
at node $n$. Technology is directly deduced from the asset. Depending on its consumption behavior, i.e, the way the 
asset consumption is modeled, the calculation of the CO2 captured installed capacity is not the same.

For an asset $a$ producing CO2 captured at node $n$ :

If it has **FUEL** behaviour activated:

$$
x_{a, CO2 \text{ } captured, n} = \bar{p}_a * fuel\_co2\_content_a / fuel\_yield_a * ratio\_cc_a
$$

If not :

$$
x_{a, CO2 \text{ } captured, n} = \bar{p}_a * co2\_content_a * ratio\_cc_a
$$

With :

- $\bar{p}_a$ : the maximal energy production capacity of asset $a$ such as returned by 
[Installed capacities KPI](installed_capacities.md) 
- $n$ : the node to which asset $a$ produced CO2 captured

*Global variables and parameters notations definitions can be consulted [here](../notations.md).*

### Indexing

- The asset index refers to the name of the asset 
- The energy index is always co2 captured
- The node index of this KPI refers to the node in which the asset produces
- The technology index refers to the technology type of the asset
- The test case index corresponds the test case of the realization variables and parameters are taken from


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