Network and schedules
Build board hierarchies, load schedules and single-line diagrams from the same project data.
Open source · Offline first · Engineer controlled
Low-voltage electrical design in one workspace.
LV Design Studio brings single-line diagrams, load schedules, equipment sizing, calculations, drawings and reports together in an offline desktop and browser application.
- No sign-in required
- Projects remain under your control
- MIT or Apache-2.0 licence
One project model
Design information is shared across calculations, drawings and deliverables, reducing repeated entry while keeping the engineer responsible for every design decision.
Electrical calculations
Check cable and breaker sizing, voltage drop, short circuit, earthing, protection coordination, transformers, generators and power factor correction.
Drawings and deliverables
Prepare drawing sheets, schedules, bills of quantities and engineering reports from the current design model.
Independent cross-checks
Compare selected studies with optional OpenDSS and pandapower engines installed on your own computer.
Private by design
The browser version keeps projects in that browser profile. The desktop application stores projects as local JSON files that can be backed up or placed in a desktop-synchronised folder.
No account or hosted project database is required. Download project backups regularly because clearing browser data removes browser-stored projects.
Read the privacy guidanceEngineering responsibility
The calculations are first-pass design checks, not a substitute for an engineer's verified study. Built-in cable values are approximate references until replaced with manufacturer data, and some study methods are intentionally simplified.
The software does not represent an electrical authority. Review the documented assumptions, limits and required independent checks before using an output for final design.
Review calculation methods and limitsOpen and inspectable
LV Design Studio is dual-licensed under the MIT License or Apache License 2.0. The source, calculation methods, tests and architecture map are public for review.