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Release notes

Version 0.6.7 (2025-10-23)

  • Fixed a bug in the internal functions get_opex_pen_up and get_opex_pen_down, such that they now work with InvestmentData.

Version 0.6.6 (2025-09-25)

  • Minor updates to the documentation.

Rework of the scheduling constraints

  • Rework of the testset for the scheduling constraints.
  • Reduced number of lines through introduction of variable extraction functions to unify scheduling constraints.
  • Moved scheduling constraint calculations to extension data.
  • Allow for investments in the detailed hydropower nodes.

Bugfixes

  • Fixed a bug in the internal function is_constraint_resource.
  • Fixed a bug in hard ScheduleConstraint{EqualSchedule} constraint for HydroReservoir.
  • Removed the function EMB.level(n::HydroReservoir, t) as it would not work in the current design.

Version 0.6.5 (2025-02-10)

  • Adjusted to EnergyModelsBase v0.9.0:
    • Increased version nubmer for EMB.
    • Model worked without adjustments.
    • Adjustments only required for simple understanding of changes.

Version 0.6.4 (2024-11-29)

  • Fixed errors overseen from the inclusion of batteries and detailed hydropower.
  • Extended on tests to avoid errors like these in the future.
  • Provided a comprehensive testset for checks.

Version 0.6.3 (2024-11-27)

Battery modelling

  • Introduced two different battery nodes.
  • Both nodes utilize charge and discharge efficiencies as well as potential for battery stack degradation.
  • Battery nodes:
    • Simplified version.
    • Includes all standard battery behaviors.
  • ReserveBattery nodes:
    • Extends Battery with the potential for specifying a reserve that the battery can supply.
    • Reserve can be both upwards and downwards, that is providing capacity to the system and use surplus capacity from the system through charging.

Detailed hydropower modelling

  • Introduced a detailed modelling of hydro power utilizing multiple nodes and PQ-curves.
  • All nodes can handle ScheduleConstraints for providing hard or soft bounds on production/stored volume.
  • Hydroreservoir nodes:
    • Storage nodes that do not require a large amount of input.
    • Utilize water volumes as stored energy.
  • HydroGate nodes:
    • Can server as a spillover from a reservoir to another.
    • Can still provide a limited capacity and fixed OPEX for maintaining them.
  • HydroGenerator nodes:
    • Connects multiple reservoirs.
    • Can take in water from multiple reservoirs.
    • Utilize concave PQ-curves for the calculation of power generation.
  • HydroPump nodes:
    • Can pump water to a higher level.
    • Utilizes convex PQ-curves for the calculation of power requirement for pumping.

Version 0.6.2 (2024-10-16)

  • Minor updates on docstrings and descriptions.
  • Adjusted to EnergyModelsBase v0.8.1.
  • Introduced abstract supertype AbstractNonDisRES for NonDisRES to allow for other implementations that use as well the variable curtailment.

Version 0.6.1 (2024-09-03)

  • Dependency increase for EnergyModelsBase as the changes do not directly affect EnergyModelsCO2.
  • Updated the documentation using the new structure released by EnergyModelsCO2.
  • Included the package DocumenterInterLinks for crossreferences to EnergyModelsBase.
  • Use dev version of EMRP for examples when running as part of tests, similar to PR #33 of EMB.

Version 0.6.0 (2024-05-28)

  • Adjusted to changes introduced in EnergyModelsBase v0.7.
  • Remove legacy constructor for RegHydroStor and provide a warning for it.
  • Added constructors for HydroStor not requiring any longer specifying an input dictionary.

Version 0.5.6 (2024-05-09)

  • Provided a contribution section in the documentation.
  • Fixed a link in the documentation for the examples.

Version 0.5.5 (2024-03-21)

  • Minor changes to the checks to be consistent with EnergyModelsBase v0.6.7.

Version 0.5.4 (2024-03-04)

Examples

  • Fixed a bug when running the examples from a non-cloned version of EnergyModelsRenewableProducers.
  • This was achieved through a separate Project.toml in the examples.

NonDIsRes node

  • Moved the capacity constraints through the profile to the function EMB.constraints_capacity(n::NonDisRES, ...), and hence, removed the function EMB.create_node(n::NonDisRES, ...).

Minor updates

  • Added some checks and tests to the checks.
  • Restructured the test folder.

Version 0.5.3 (2024-01-30)

  • Updated the restrictions on the fields of individual types to be consistent.
  • Added option to not include the field data for the individual introduced Nodes.

Version 0.5.2 (2024-01-19)

  • Updated the documenation to be in line with the updated done in EnergyModelsBsae.
  • Moved RegHydroStor to a new file, legacy_constructors.jl to highlight that a user should use the new types, namely HydroStor and PumpedHydroStor.

Version 0.5.1 (2024-01-17)

  • Update the method constraints_level to match the signature updates for these methods in EnergyModelsBase. This includes renaming constraints_level to constraints_level_sp.
  • Moved the function to EMB.constraints_level_sp to avoid problems.

Version 0.5.0 (2023-12-18)

Adjustment to release in EMB 0.6.0

  • Adjusted the code for the new release.
  • Implementation of support for RepresentativePeriods for HydroStorage nodes.

Version 0.4.2 (2023-09-01)

Create a variable :spill for hydro storage node

  • This variable enables hydro storage nodes to spill water from the reservoir without producing energy.

Version 0.4.1 (2023-08-31)

Split the hydro storage node into to separate nodes

  • Split RegHydroStor into to types PumpedHydroStor and HydroStor. Both are subtypes

of the new abstract type HydroStorage <: EMB.Storage.

  • Fix: variational OPEX for HydroStor now depends on flow_out instead of

flow_in. The new type PumpedHydroStor has a separate parameter for variational OPEX for the pumps, which depends on flow_in.

Version 0.4.0 (2023-06-06)

Switch to TimeStruct

  • Switched the time structure representation to TimeStruct.
  • TimeStruct is implemented with only the basis features that were available in TimeStructures. This implies that neither operational nor strategic uncertainty is included in the model.

Version 0.3.0 (2023-05-30)

  • Adjustment to changes in EnergyModelsBase v0.4.0 related to extra input data.

Version 0.2.2 (2023-05-15)

  • Adjustment to changes in EnergyModelsBase v 0.3.3 related to the calls for the constraint functions.

Version 0.2.1 (2023-02-03)

  • Take the examples out to the folder examples.

Version 0.2.0 (2023-02-03)

Adjustmends to updates in EnergyModelsBase

Adjustment to version 0.3.0, namely:

  • Changed type (Node) calls in tests to be consistent with version 0.3.0.
  • Removal of the type GlobalData and replacement with fields in the type OperationalModel in all tests.
  • Changed type structure to be consistent with EMB version 0.3.0.
  • Substitution of certain constraints in create_node through functions which utilize dispatching on node types.
  • Changed the input to the function variables_node.

Version 0.1.3 (2022-12-12)

Internal release

  • Renamed to follow common prefix naming scheme.
  • Update README.

Version 0.1.2 (2022-12-02)

  • Minor test fixes in preparation of internal release.

Version 0.1.1 (2021-09-07)

Changes in naming

  • Major changes in both variable and parameter naming, check the commit message for an overview.
  • Change of structure in composite type "RegHydroStor".

Version 0.1.0 (2021-08-23)

  • Initial version with inclusion of nodes for:
    • nondispatchable renewable energy sources (NonDisRES) and
    • regulated hydro generation (RegHydroStor, can be used for pumped hydro storage).