Ontario Electricity Rate Comparator

A full-stack PWA to compare Ontario residential plan costs (Tiered, TOU, ULO) for Alectra-compatible rate options.

Features

• Compare all three plans for the same input scenario
• Select current plan to highlight your baseline
• Two usage input modes:
  • Simple monthly kWh + profile distribution
  • Detailed kWh by TOU and ULO periods
• Edit default rates before each calculation
• Optional extras estimate (HST, OER, delivery, regulatory placeholders)
• Offline-capable PWA with local scenario restore
• Docker-ready deployment behind Traefik

Run locally

npm install
npm run dev

Open http://localhost:3000

API

• GET /api/health
• GET /api/rates
• POST /api/rates/refresh
• POST /api/compare

Rates source

Default rates are in server/rates/default-rates.json.

Remote refresh can be enabled by setting RATES_SOURCE_URL to a JSON endpoint matching the same shape.

Docker (Traefik)

cd docker
docker compose -f docker-compose.traefik.yml up -d --build

Update the host rule label in compose to your domain used by Traefik.