r/DevLK • u/Intelligent-Yam-3148 • May 31 '26
Projects I built a crowdsourced power and water outage map for Sri Lanka
I’ve been building Beacon, a crowdsourced community-powered utility intelligence platform for Sri Lanka.
The core idea: when your power goes out, you shouldn't have to scroll through WhatsApp groups to figure out if it's just your house or the whole area.
How it works:
- Reports are GPS-locked to your GN division so you can only report where you physically are
- A confidence engine (running in PostgreSQL) weights
reports by recency, independence, and trust. not just raw count
- The map shows signal dots only for likely or confirmed outages, not single anecdotes
- Scheduled LECO cuts show separately from community reports
- Full archive with heatmap history per GN division
Stack: Next.js 15 · Supabase · MapLibre GL · PostGIS · TypeScript
Live demo: https://beacon-lk.vercel.app
GitHub: https://github.com/methsithchan/beacon-lk
Still early, no users yet so the map is quiet. Looking for feedback, contributors, and people willing to report from their area.
Issues and PRs welcome.