add costs section
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doc/costs.rst
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doc/costs.rst
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##################
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Cost Assumptions
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##################
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The database of cost assumptions is stored in ``data/costs.csv``.
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It includes cost assumptions for all included technologies for specific
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years from various sources, namely for
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- discount rate,
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- lifetime,
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- investment (CAPEX),
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- fixed operation and maintenance (FOM),
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- variable operation and maintenance (VOM),
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- fuel costs,
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- efficiency, and
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- carbon-dioxide intensity.
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The given overnight capital costs are annualised to net present costs
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with a discount rate of :math:`r` over the economic lifetime :math:`n` using the annuity factor
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.. math::
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a = \frac{1-(1+r)^{-n}}{r}.
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Based on the parameters above the ``marginal_cost`` and ``capital_cost`` of the system components are calculated.
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Modifying Cost Assumptions
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==========================
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Some cost assumptions (e.g. marginal cost and capital cost) can be directly overwritten in the ``config.yaml`` (cf. Section :ref:`costs_cf` in :ref:`config`).
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To change cost assumptions in more detail, modify cost assumptions directly in ``data/costs.csv`` as this is not yet supported through the config file.
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You can also build multiple different cost databases. Make a renamed copy of ``data/costs.csv`` (e.g. ``data/costs-optimistic.csv``) and set the variable ``COSTS=data/costs-optimistic.csv`` in the ``Snakefile``.
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Default Cost Assumptions
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========================
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.. csv-table::
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:header-rows: 1
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:widths: 10,3,5,4,6,8
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:file: ../data/costs.csv
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@ -58,6 +58,7 @@ Documentation
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* :doc:`wildcards`
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* :doc:`wildcards`
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* :doc:`configuration`
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* :doc:`configuration`
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* :doc:`costs`
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.. toctree::
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.. toctree::
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:hidden:
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:hidden:
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@ -66,6 +67,7 @@ Documentation
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wildcards
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wildcards
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configuration
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configuration
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costs
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**Rules Overview**
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**Rules Overview**
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