.. SPDX-FileCopyrightText: 2019-2020 The PyPSA-Eur Authors SPDX-License-Identifier: CC-BY-4.0 ########################################## Release Notes ########################################## Upcoming Release ================ * An option is introduced which adds constraints such that each country or node produces on average a minimal share of its total consumption itself. For example ``EQ0.5c`` set in the ``{opts}`` wildcard requires each country to produce on average at least 50% of its consumption. Additionally, the option ``ATK`` requires autarky at each node and removes all means of power transmission through lines and links. ``ATKc`` only removes cross-border transfer capacities. Moreover, line and link capacities can be capped in the ``config.yaml`` at ``lines: s_nom_max:`` and ``links: p_nom_max`` (`#166 `_). * Added an option to alter the capital cost (``c``) or installable potentials (``p``) of carriers by a factor via ``carrier+{c,p}factor`` in the ``{opts}`` wildcard. This can be useful for exploring uncertain cost parameters. Example: ``solar+c0.5`` reduces the capital cost of solar to 50% of original values (`#167 `_ and `#207 `_). * Add compatibility for pyomo 5.7.0 in :mod:`cluster_network` and :mod:`simplify_network`. * Raise a warning if `tech_colors` in the config are not defined for all carriers. * Corrected HVDC link connections (a) between Norway and Denmark and (b) mainland Italy, Corsica (FR) and Sardinia (IT) (`#181 `_) * Added Google Cloud Platform tutorial (for Windows users). * Corrected setting of exogenous emission price (in config -> cost -> emission price). This was not weighted by the efficiency and effective emission of the generators. Fixed in `#171 `_. * Don't remove capital costs from lines and links, when imposing a line volume limit (wildcard ``lv``) or a line cost limit (``lc``). Previously, these were removed to move the expansion in direction of the limit. * Fix bug of clustering offwind-{ac,dc} sites in the option of high-resolution sites for renewables. Now, there are more sites for offwind-{ac,dc} available than network nodes. Before, they were clustered to the resolution of the network. (e.g. elec_s1024_37m.nc: 37 network nodes, 1024 sites) * Use `mamba` (https://github.com/mamba-org/mamba) for faster Travis CI builds (`#196 `_) * The N-1 security margin for transmission lines is now fixed to a provided value in ``config.yaml``, removing an undocumented linear interpolation between 0.5 and 0.7 in the range between 37 and 200 nodes. * The mappings for clustered lines and buses produced by the ``simplify_network`` and ``cluster_network`` rules changed from Hierarchical Data Format (.h5) to Comma-Separated Values format (.csv) (`#198 `_) * Added an option to use custom busmaps in rule :mod:`cluster_network`. To use this feature set ``enable: custom_busmap: true``. Then, the rule looks for custom busmaps at ``data/custom_busmap_elec_s{simpl}_{clusters}.csv``, which should have the same format as ``resources/busmap_elec_s{simpl}_{clusters}.csv``. i.e. the index should contain the buses of ``networks/elec_s{simpl}.nc`` (`#193 `_). * Fixed a bug for storage units such that individual store and dispatch efficiencies are correctly taken account of rather than only their round-trip efficiencies. In the cost database (``data/costs.csv``) the efficiency of battery inverters should be stated as per discharge/charge rather than per roundtrip (`#202 _). * Parameter corrections for East-Western and Anglo-Scottish interconnectors (`#206 `_) * Modelling hydrogen and battery storage with Store and Link components is now the default, rather than using StorageUnit components with fixed power-to-energy ratio (`#205 `_). * Electricity consumption data is now directly retrieved from the `OPSD website `_ using the rule ``build_load_data``. The user can decide whether to take the ENTSOE power statistics data (defaul) or the ENTSOE transparency data. * Added an option to the ``{opts}`` wildcard that applies a time series segmentation algorithm based on renewables, hydro inflow and load time series to produce a given total number of adjacent snapshots of varying lengths. This feature is an alternative to downsampling the temporal resolution by simply averaging and uses the `tsam `_ package (#186 `_). PyPSA-Eur 0.2.0 (8th June 2020) ================================== * The optimization is now performed using the ``pyomo=False`` setting in the :func:`pypsa.lopf.network_lopf`. This speeds up the solving process significantly and consumes much less memory. The inclusion of additional constraints were adjusted to the new implementation. They are all passed to the :func:`network_lopf` function via the ``extra_functionality`` argument. The rule ``trace_solve_network`` was integrated into the rule :mod:`solve_network` and can be activated via configuration with ``solving: options: track_iterations: true``. The charging and discharging capacities of batteries modelled as store-link combination are now coupled (`#116 `_). * An updated extract of the `ENTSO-E Transmission System Map `_ (including Malta) was added to the repository using the `GridKit `_ tool. This tool has been updated to retrieve up-to-date map extracts using a single `script `_. The update extract features 5322 buses, 6574 lines, 46 links. (`#118 `_). * Added `FSFE REUSE `_ compliant license information. Documentation now licensed under CC-BY-4.0 (`#160 `_). * Added a 30 minute `video introduction `_ and a 20 minute `video tutorial `_ * Networks now store a color and a nicely formatted name for each carrier, accessible via ``n.carrier['color']`` and ``n.carrier['nice_name'] ``(networks after ``elec.nc``). * Added an option to skip iterative solving usually performed to update the line impedances of expanded lines at ``solving: options: skip_iterations:``. * ``snakemake`` rules for retrieving cutouts and the natura raster can now be disabled independently from their respective rules to build them; via ``config.*yaml`` (`#136 `_). * Removed the ``id`` column for custom power plants in ``data/custom_powerplants.csv`` to avoid custom power plants with conflicting ids getting attached to the wrong bus (`#131 `_). * Add option ``renewables: {carrier}: keep_all_available_areas:`` to use all availabe weather cells for renewable profile and potential generation. The default ignores weather cells where only less than 1 MW can be installed (`#150 `_). * Added a function ``_helpers.load_network()`` which loads a network with overridden components specified in ``snakemake.config['override_components']`` (`#128 `_). * Bugfix in :mod:`base_network` which now finds all closest links, not only the first entry (`#143 `_). * Bugfix in :mod:`cluster_network` which now skips recalculation of link parameters if there are no links (`#149 `_). * Added information on pull requests to contribution guidelines (`#151 `_). * Improved documentation on open-source solver setup and added usage warnings. * Updated ``conda`` environment regarding ``pypsa``, ``pyproj``, ``gurobi``, ``lxml``. This release requires PyPSA v0.17.0. PyPSA-Eur 0.1.0 (9th January 2020) ================================== This is the first release of PyPSA-Eur, a model of the European power system at the transmission network level. Recent changes include: * Documentation on installation, workflows and configuration settings is now available online at `pypsa-eur.readthedocs.io `_ (`#65 `_). * The ``conda`` environment files were updated and extended (`#81 `_). * The power plant database was updated with extensive filtering options via ``pandas.query`` functionality (`#84 `_ and `#94 `_). * Continuous integration testing with `Travis CI `_ is now included for Linux, Mac and Windows (`#82 `_). * Data dependencies were moved to `zenodo `_ and are now versioned (`#60 `_). * Data dependencies are now retrieved directly from within the snakemake workflow (`#86 `_). * Emission prices can be added to marginal costs of generators through the keyworks ``Ep`` in the ``{opts}`` wildcard (`#100 `_). * An option is introduced to add extendable nuclear power plants to the network (`#98 `_). * Focus weights can now be specified for particular countries for the network clustering, which allows to set a proportion of the total number of clusters for particular countries (`#87 `_). * A new rule :mod:`add_extra_components` allows to add additional components to the network only after clustering. It is thereby possible to model storage units (e.g. battery and hydrogen) in more detail via a combination of ``Store``, ``Link`` and ``Bus`` elements (`#97 `_). * Hydrogen pipelines (including cost assumptions) can now be added alongside clustered network connections in the rule :mod:`add_extra_components` . Set ``electricity: extendable_carriers: Link: [H2 pipeline]`` and ensure hydrogen storage is modelled as a ``Store``. This is a first simplified stage (`#108 `_). * Logfiles for all rules of the ``snakemake`` workflow are now written in the folder ``log/`` (`#102 `_). * The new function ``_helpers.mock_snakemake`` creates a ``snakemake`` object which mimics the actual ``snakemake`` object produced by workflow by parsing the ``Snakefile`` and setting all paths for inputs, outputs, and logs. This allows running all scripts within a (I)python terminal (or just by calling ``python ``) and thereby facilitates developing and debugging scripts significantly (`#107 `_). Release Process =============== * Checkout a new release branch ``git checkout -b release-v0.x.x``. * Finalise release notes at ``doc/release_notes.rst``. * Update ``environment.fixedversions.yaml`` via ``conda env export -n pypsa-eur -f environment.fixedversions.yaml --no-builds`` from an up-to-date `pypsa-eur` environment. * Update version number in ``doc/conf.py`` and ``*config.*.yaml``. * Open, review and merge pull request for branch ``release-v0.x.x``. Make sure to close issues and PRs or the release milestone with it (e.g. closes #X). * Tag a release on Github via ``git tag v0.x.x``, ``git push``, ``git push --tags``. Include release notes in the tag message. * Upload code to `zenodo code repository `_ with `GNU GPL 3.0 `_ license. * Create pre-built networks for ``config.default.yaml`` by running ``snakemake -j 1 extra_components_all_elec_networks``. * Upload pre-built networks to `zenodo data repository `_ with `CC BY 4.0 `_ license. * Send announcement on the `PyPSA and PyPSA-Eur mailing list `_.