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Sienna-Platform

25 indexed repositories · View on GitHub

PowerSystems.jl
Data structures in Julia to enable power systems analysis.

Julia · 369 stars
PowerSimulations.jl
Julia for optimization simulation and modeling of PowerSystems.

Julia · 317 stars
PowerSimulationsDynamics.jl
Julia package to run Dynamic Power System simulations.

Julia · 223 stars
InfrastructureSystems.jl
Utility package for Sienna's simulation infrastructure

Julia · 41 stars
PowerSystemsTestData
Data Repository for the Repositories in Sienna

MATLAB · 38 stars
PowerGraphics.jl
A package to generate visualizations from PowerSimulations.jl results.

Julia · 33 stars
PowerFlows.jl
Collection of Power Flow solution methods based on PowerSystems.jl

Julia · 31 stars
PowerNetworkMatrices.jl
Methods to generate matrix representations of power systems matrices

Julia · 31 stars
PowerSystemsInvestments.jl
Modeling library for Power Systems investment models. E.g., Capacity Expansion and Transmission Expansion

Julia · 21 stars
PowerSystemCaseBuilder.jl
Package to build Cases for Power Systems Modeling

Julia · 17 stars
HydroPowerSimulations.jl
Extension of PowerSimulations.jl to model Hydropower devices

Julia · 14 stars
PowerSystemsInvestmentsPortfolios.jl
Data models for Power Systems investment models.

Julia · 13 stars
PowerAnalytics.jl
Analytic routines for power system simulation results in the Sienna platform

Julia · 9 stars
SiennaGridDB
Schema for the SQL database derived from SiennaSchemas

Python · 9 stars
StorageSystemsSimulations.jl
Package to simulate the operation of Storage Systems

Julia · 7 stars
HybridSystemsSimulations.jl
Extension Repository for the simulation of Hybrid Energy Systems with PowerSimulations.jl

Julia · 6 stars
Sienna
Repo for Sienna's main public website, linked below

CSS · 6 stars
SiennaPRASInterface.jl
Interface to PRAS.jl maintained by Sienna\Ops

Julia · 4 stars
SiennaSchemas
Schemas For Multi Domain Power Systems Modeling

Python · 4 stars
PowerOperationsModels.jl
Collection of Operational Optimization Models in Power Systems

Julia · 2 stars
5 more repositories live on View on GitHub

Beginner friendly Everything

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PSY6 serialization fails for MarketBidTimeSeriesCost with Ancillary Services Offers Open

PowerSystems 6.0

Sienna-Platform/PowerSystems.jl#1803 · 1 assignee · Opened Sep 18, 2026
Improve convert_component docstrings and add to tutorials Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

Sienna-Platform/PowerSystems.jl#1800 · Opened Sep 18, 2026
Implement shared documentation search bar Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Sienna-Platform/Sienna#86 · Opened Sep 18, 2026
Multiple GroupReserve cannot build / builds only one group; NonSpinningReserve limit mixes minutes and hours markdown Open

code bug

Difficulty 4/5 3-5 days Newbie friendliness 58/100

Sienna-Platform/PowerSimulations.jl#1678 · Opened Sep 18, 2026
Port PSI#1676 new parallel branch reduction method Open

Sienna-Platform/PowerOperationsModels.jl#314 · 1 assignee · Opened Sep 18, 2026
Support schema migration Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Sienna-Platform/SiennaGridDB#187 · Opened Sep 18, 2026
BranchesParalell treatment of double circuit branches Open

feature request

Sienna-Platform/PowerSimulations.jl#1676 · 1 assignee · Opened Sep 18, 2026
Units and constructors: bare float policy change Open

Sienna-Platform/PowerSystems.jl#1799 · 1 comment · 1 assignee · Opened Sep 18, 2026
units.jl regenerates in a different order every run, producing a 5200-line no-op diff Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

Sienna-Platform/PowerOpenAPIModels#22 · Opened Sep 16, 2026
What does TopologyMapping describe after Node/Zone are removed? (tutorial alignment with #123) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Sienna-Platform/PowerSystemsInvestmentsPortfolios.jl#124 · Opened Sep 16, 2026
Python and TypeScript do not validate component payloads on read (needs a type-name registry) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

Sienna-Platform/power-openapi-models#11 · Opened Sep 16, 2026
SystemDocument records no schema version, so a reader cannot tell what wrote it Open

Sienna-Platform/SiennaSchemas#61 · 1 reaction · 1 assignee · Opened Sep 16, 2026
test multiple evaluators: `findlast` over the evaluation-data `Dict` can return the wrong evaluator Open

Sienna-Platform/PowerOperationsModels.jl#308 · 1 assignee · Opened Sep 16, 2026
Wire PF's new `SolutionParameters` in Open

Sienna-Platform/PowerOperationsModels.jl#306 · 1 assignee · Opened Sep 16, 2026
add utilities to insert/read from the SDKs Open

Sienna-Platform/SiennaGridDB#186 · 2 assignees · Opened Sep 16, 2026
build_openapi_system aborts when two TwoWindingTransformer records share a bus pair and circuit id Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Sienna-Platform/PowerFlowFileParser.jl#60 · 1 comment · Opened Sep 15, 2026
Fix Julia 1.13 CI test failures Open

Sienna-Platform/PowerSimulations.jl#1673 · 3 comments · 1 assignee · Opened Sep 15, 2026
Proposal: unit annotations for cost and loss curves Open

Sienna-Platform/SiennaSchemas#57 · 1 assignee · Opened Sep 14, 2026
`arc_subnetwork_axis` keeps pre-merge arc labels after a bus merge Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

Sienna-Platform/PowerNetworkMatrices.jl#369 · Opened Sep 14, 2026
Unify curve unit conversion Open

Sienna-Platform/InfrastructureSystems.jl#642 · 1 assignee · Opened Sep 14, 2026
Decode does not materialize schema defaults: same document loads to different values in Julia and Python Open

Sienna-Platform/PowerOpenAPIModels#18 · 1 assignee · Opened Sep 13, 2026
Add ruff to CI and pre-commit: configured, in dev extras, but never enforced Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

Sienna-Platform/SiennaGridDB#181 · Opened Sep 11, 2026
Coverage is 44/96 components: Dynamics 0/7, no services or reserves, no policy layer, and loads is a stub Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

Sienna-Platform/SiennaGridDB#180 · Opened Sep 11, 2026
generate_sql_schema.py --check --diff reports 94 coverage gaps and exits 0, so db_only suppresses nothing Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

Sienna-Platform/SiennaGridDB#179 · Opened Sep 11, 2026
36 of 86 foreign-key child columns have no index, including every arc_id and bus reference Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

Sienna-Platform/SiennaGridDB#178 · Opened Sep 11, 2026
STRICT conversion is half-finished: 14 of 52 tables accept text in numeric columns Open

Difficulty 4/5 3-5 days Newbie friendliness 64/100

Sienna-Platform/SiennaGridDB#177 · Opened Sep 11, 2026
Review THVDCLine units Open

Sienna-Platform/SiennaSchemas#52 · 1 assignee · Opened Sep 11, 2026
Windows CI: mktempdir cleanup fails (ENOTEMPTY) after the Sienna zip archive tests Open

Sienna-Platform/InfrastructureSystems.jl#636 · 1 assignee · Opened Sep 11, 2026
PSY6 de-serialization will copy a zipped archive to a tmpdir Open

Sienna-Platform/PowerSystems.jl#1792 · 1 assignee · Opened Sep 10, 2026
Port PSI#1617 G-1 Open

PSI parity

Sienna-Platform/PowerOperationsModels.jl#298 · 1 assignee · Opened Sep 10, 2026
Port HPS#136 Hydro MBC Open

PSI parity

Difficulty 4/5 3-5 days Newbie friendliness 20/100

Sienna-Platform/PowerOperationsModels.jl#297 · Opened Sep 10, 2026
Port HPS#138 energy reservoirs Open

PSI parity

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Sienna-Platform/PowerOperationsModels.jl#296 · Opened Sep 10, 2026
Switched Shunt BINIT and block-status handling Open

Sienna-Platform/PowerFlowFileParser.jl#57 · 1 assignee · Opened Sep 10, 2026
Port PSI#1660 fix devicestatus IC Open

PSI parity

Difficulty 3/5 1-2 days Newbie friendliness 25/100

Sienna-Platform/PowerOperationsModels.jl#294 · Opened Sep 10, 2026
Port PSI#1663 area balance fix Open

PSI parity

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Sienna-Platform/PowerOperationsModels.jl#293 · Opened Sep 10, 2026
Port PSI#1667 renewable curtailment cost Open

PSI parity

Difficulty 4/5 3-5 days Newbie friendliness 30/100

Sienna-Platform/PowerOperationsModels.jl#292 · Opened Sep 10, 2026
Discrete control: continuation converges, but too slowly Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Sienna-Platform/PowerFlows.jl#444 · Opened Sep 9, 2026
Implement ComponentSelector for filtering branches Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Sienna-Platform/PowerOperationsModels.jl#288 · Opened Sep 9, 2026
Port PSI#1668 Open

PSI parity

Sienna-Platform/PowerOperationsModels.jl#287 · 1 comment · 1 assignee · Opened Sep 9, 2026
Curtailment-cost expression should use time-varying renewable availability Open

code bug

Sienna-Platform/PowerSimulations.jl#1666 · 1 assignee · Opened Sep 7, 2026
Sub-hourly emulator fails state update against coarser decision models: timestamp not aligned Open

code bug PSI 1.0

Sienna-Platform/PowerSimulations.jl#1665 · 1 assignee · Opened Sep 5, 2026
PSY parsing changes post package split Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Sienna-Platform/PowerFlowFileParser.jl#54 · Opened Sep 4, 2026
Load models for StandardLoad in AC Open

bug

Sienna-Platform/PowerOperationsModels.jl#270 · 1 comment · 1 assignee · Opened Sep 3, 2026
Use StringTemplates in Arc Names Open

Performance

Sienna-Platform/PowerNetworkMatrices.jl#358 · 1 assignee · Opened Sep 3, 2026
Network Reductions and Results Reporting Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

Sienna-Platform/PowerOperationsModels.jl#264 · 1 comment · Opened Sep 1, 2026
`AreaPTDFPowerModel` drops `ActivePowerPumpVariable` from the area power balance Open

code bug

Sienna-Platform/PowerSimulations.jl#1661 · 1 comment · 1 assignee · Opened Sep 1, 2026
RFC: No default parallel_branch_max_rating value Open

question

Difficulty 5/5 Over a week Newbie friendliness 35/100

Sienna-Platform/PowerOperationsModels.jl#261 · 1 comment · Opened Sep 1, 2026
Improve docs Open

Sienna-Platform/SiennaSchemas#37 · 1 assignee · Opened Sep 1, 2026
rename XY_Coords Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

Sienna-Platform/SiennaSchemas#36 · Opened Sep 1, 2026
Use unevaluatedProperties to close the validation gap in discriminated unions Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Sienna-Platform/SiennaSchemas#34 · 1 reaction · Opened Aug 31, 2026

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