1.8 KiB
Techno-Economic Assumptions
The database of cost assumptions is retrieved from the repository PyPSA/technology-data and then saved to a file resources/costs_{year}.csv. The config/config.yaml provides options to choose a reference year and use a specific version of the repository.
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.. literalinclude:: ../config/config.default.yaml :language: yaml :start-at: costs: :end-at: version:
The file includes cost assumptions for all included technologies for specific years compiled from various sources, namely for
- discount rate,
- lifetime,
- investment (CAPEX),
- fixed operation and maintenance (FOM),
- variable operation and maintenance (VOM),
- fuel costs,
- efficiency, and
- carbon-dioxide intensity.
Many values are taken from a database published by the Danish Energy Agency (DEA).
The given overnight capital costs are annualised to net present costs with a discount rate of r over the economic lifetime n using the annuity factor
Based on the parameters above the marginal_cost and capital_cost of the system components are automatically calculated.
Modifying Assumptions
Some cost assumptions (e.g. marginal cost and capital cost) can be directly set in the config/config.yaml (cf. Section :ref:`costs_cf` in :ref:`config`). To change cost assumptions in more detail, make a copy of resources/costs_{year}.csv and reference the new cost file in the Snakefile:
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.. literalinclude:: ../Snakefile :start-at: COSTS :end-at: COSTS