GAHUMRun your first load flow
Load the original 5-bus example, solve it, and interpret per-unit bus voltages.
For research and study
Power-system studies in your browser.
Build a Power System, explore steady-state analysis, and export a Study Report. For research and study, with local calculations and optional maps.
The Analysis Engine runs locally in your browser. Start with an example, edit buses and branches, or import a case.
Free to use. No account or installation. Your saved work stays in the editor in this browser where local storage is available.
Use a modern web browser with JavaScript and WebAssembly on your operating system.
Study guides
These original tutorial drafts walk through the current editor. They are available for review before publication.
Import a case and read its Import Report
Use an original downloadable RAW example and identify what an import preserves or omits.
Read and export a Study Report
Check the case, methods, results, and limitations before keeping a self-contained copy.
Local calculations. Optional maps.
The public pages do not load the editor or read its saved work. In the editor, GAHUM calculates locally. Map View requires an explicit choice and contacts external providers with the area you view.
Read about these public pages or the editor's storage and optional requests.
Understand the limits.
GAHUM is for research, study, and exploratory steady-state analysis. Results depend on model data and simplifying assumptions. They do not certify standards compliance or suitability for operating equipment.
Review the example sources and assumptions and research-use terms.