Grid planning · Load flow · No installation
Detect overloads and voltage violations before construction, without desktop software. Draw substations, cables and load points on an interactive map. Run Newton-Raphson load flow. Export in five formats.
Free · No installation · No credit card
Live demo Stuttgart Nord 20 kV network with load flow results
The problem
Most network planners reach for PowerFactory or PSCAD software that costs thousands per license, requires installation, and has a learning curve that takes quite a while.
PowerFactory and PSCAD are installed per machine. Sharing a project means exporting files and hoping your colleague has the same version installed and configured the same way.
CAD and GIS are disconnected. Importing a DXF into a planning tool means hours of manual georeferencing and layer cleanup every single time.
Sharing a project means exporting and compressing. The recipient still needs compatible software. No legacy tool offers simple link-based sharing.
Multiple configuration steps before placing a single component. Setup delays actual work.
How it works
Upload a DXF, GeoJSON or Shapefile. GridPlan detects coordinate systems automatically and proposes a topology review before writing anything to your project. Or skip imports and place nodes directly on the map.
Place substations, transformers, generators, load points, switches, busbars, capacitor banks, junctions and poles. Connect them with overhead lines, underground cables or distribution feeders. Define voltage levels and conductor parameters per element.
Run the validator to detect disconnected nodes, missing sources and short circuits. Use auto-fix to resolve common issues in one click.
Choose the built-in radial sweep solver or pandapower Newton-Raphson engine. Results appear as colored overlays on the map: red lines for overloaded cables, voltage rings on each node showing per-unit deviation from nominal.
Export in five formats or share a read-only URL. No account required to view. Print or export to PDF directly from the viewer.
Capabilities
01
Built-in radial sweep for fast results on radial networks, plus pandapower Newton-Raphson for meshed networks and greater numerical accuracy.
02
MapLibre GL editor with custom basemaps, WMS/WMTS tile support, full undo/redo, multi-project handling.
03
DXF files with automatic CRS detection and directional snapping to prevent false cable connections. GeoJSON and Shapefile also supported.
04
Dry-run imports with confidence scoring, a visual review interface and selective commit. Invalid topology is flagged on-the-fly.
05
Share projects via unique URL. View full network, voltage overlays and results without login or edit access.
06
Project isolation per user. Rate-limited API, CSRF protection, HSTS, full security headers and encrypted credentials.
Free. No installation. No credit card.