Software versions
Electrisim is continuously developed as open power-system analysis software powered by
pandapower, OpenDSS, and ANDES.
Releases follow Semantic Versioning (MAJOR.MINOR.PATCH):
MINOR for new features, PATCH for fixes. The versions below are feature releases,
aligned with work in the
frontend
and
backend
repositories. The date on each card is when that release shipped.
1.15.0
Grid-code WTG, dual-solver shunt control & robust load flow
August 2026
- Grid Code Compliance (P-Q & U-Q) now selects Wind Turbine units as well as static generators; P-Q templates auto-pair the matching U-Q/Pmax envelope; U-Q template voltages are merged into the sweep so the U-Q chart is a curve
- Pandapower load flow: automatic solver fallback (drop tap/shunt controllers, more iterations, flat start, Iwamoto) with an alert when the requested controller run cannot converge
- OpenDSS snapshot load flow: same shunt characteristic table, discrete voltage control, and Line P→shunt step as pandapower; static generators / WTGs as constant-PQ (Generator Model=1)
- Line-flow shunt control is gated with DiscreteShunt under Include controller → Shunt reactor tap changer (Park Controller stays independent)
- File → New template: offshore wind farm 1 GW (rev 6); editor study modules load on demand for faster startup
1.14.0
Wind turbines, park control & OpenDSS studies
August 2026
- Dedicated Wind Turbine element: P(v) power curve (2.5 / 3.3 MW onshore and 15 MW offshore templates), voltage-dependent Q capability (P–U), and automatic P [MW] from wind speed in the element dialog and Component Data
- Park Controller (pandapower) for plant Q, voltage, power factor, and tan(φ); cosφ(P) Overexcited (capacitive) / Underexcited (inductive) branches; Python export of park specs and WTG Q limits
- Wind Turbine Controller (steady-state Pref from curve) and dynamic controller (averaging / gradient limiting)
- OpenDSS: DG interconnection screening, Monte Carlo load flow, and RegControl / CapControl / StorageController
- ANDES inverter-based resource / wind plant dynamics (REGCA1)
1.13.0
Arc flash, validation & grid code
July 2026
- Arc flash assessment (IEEE 1584-2018), with related study workflows and templates
- Transient stability and eigenvalue analysis path via ANDES; motor starting / voltage dip studies
- PowerFactory comparison and validation material
- OpenDSS 75 Hz support
- U-Q/Pmax grid-code compliance in reactive power capability (RPC) analysis
1.12.0
Single-phase & OpenDSS controls
June 2026
- Single-phase network elements in the editor and calculation path
- BESS control support for OpenDSS
- Power-flow direction visualization on buses
- Protection coordination and short-circuit refinements
1.11.0
Studies & health dashboard
May 2026
- Protection coordination updates across multiple revisions
- Contingency analysis and time-series simulation improvements
- OPF cost and currency options in dialogs
- Network Health Dashboard and load-flow feature enhancements
1.10.0
Controllers & editor polish
April 2026
- Discrete tap control and discrete shunt / reactor controllers
- Transformer tap-control UI and load-flow controller grouping
- Standardized electrical symbol sizing; map tile reliability (Carto CDN)
- Engineering report / health-dashboard baseline compare; documentation links in dialogs
1.9.0
Economics, PQ, short-circuit & mobile
March 2026
- Economic analysis study tab
- Reactive power capability (PQ diagrams), including regional grid-code profiles
- Short-circuit and harmonics analysis improvements
- Mobile UI work; three-winding transformer and static generator improvements
1.8.0
Harmonics, map & import
February 2026
- Harmonic analysis (voltage and current THD)
- GIS map editor for geographic network layout
- Native file import workflows
- OpenDSS load-flow updates; revised offshore wind farm model; PDF export updates
1.7.0
OpenDSS short-circuit & DC
January 2026
- OpenDSS short-circuit / fault study
- Production API host
api.electrisim.com; OpenDSSDirect.py backend path - DC component improvements; BESS sizing
- Registration and subscription status flow updates
1.6.0
DC elements & results
December 2025
- DC elements via pandapower
- Results appearance and presentation updates
- Backend pandapower 3.3.x pin and connection fixes
1.5.0
OpenDSS load flow & PV
November 2025
- OpenDSS load-flow integration in the cloud backend
- PVSystem support
- Railway deployment configuration and performance updates
1.4.0
OPF & operations studies
July 2025
- Optimal power flow (OPF)
- Contingency analysis and time-series simulation
1.3.0
FACTS / SSC
February 2025
- SSC / STATCOM and related FACTS modelling path
- Short-circuit and SSC bug fixes through early 2025
1.2.0
OpenDSS foundation
May–June 2024
- Early OpenDSS integration and load-flow path
- Open-source repository readiness work
1.1.0
FACTS elements
January 2024
- SVC and TCSC elements added to the library
- Runtime and dependency updates for cloud deployment
1.0.0
Platform launch
March–July 2023
- Backend API foundation and cloud hosting (Render / Heroku)
- CORS and production API hardening
- External-grid and multi-element result outputs — core cloud calculation platform
Full chronological commit lists from GitHub appear below (loaded live for browsers with JavaScript enabled). See also the roadmap and documentation.