PowerPlan Pro

PowerPlan Pro is a practical backup power and energy-cost planner for homes, student flats, small shops, and small clinics during electricity outages.

It helps users answer real questions:

• Which appliances can stay on during an outage?
• How long will my battery/inverter last?
• Which loads should I shed first?
• How much does generator use cost compared with grid recharge?
• Is the inverter overloaded?

Features

• Editable appliance/load planner
• Battery usable-capacity and runtime estimator
• Inverter headroom warning
• Solar offset estimate
• Generator fuel cost vs grid recharge cost comparison
• Runtime by priority chart
• Outage schedule timeline
• CSV report export
• Unit-tested Python calculation layer
• GitHub Actions CI

Screenshots

Dashboard:

Runtime chart:

Run The App

Open directly:

open index.html

Or serve locally:

python3 -m http.server 5175

Then visit:

http://127.0.0.1:5175

Run Tests

python3 -m unittest discover -s tests -v

Export Sample Report

PYTHONPATH=. python3 tools/export_sample_report.py

Scope

This is a planning and education tool. Real installations should be checked by a qualified electrician or power engineer, especially for inverter sizing, earthing, transfer switching, cable ratings, and battery safety.

Author

Raymond Mokolo