#sustainability hackathon ideas

10 ideas across 2 categories · 2 beginner · 8 intermediate · 0 advanced. Sorted by judging fit (editorial estimate).

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Climate
Planted Tree Survival Tracker
Geotag planted saplings and track whether they actually survive
Intermediate16h2–4
React NativeFirebaseVision LLM
17/20
Climate
Repair Café Booking and Fix Log
Book a slot to fix a broken item and track what was saved from landfill
Beginner10h1–3
Next.jsFirebaseCharts
17/20
Climate
Personal Carbon Tracker
Gives daily feedback on carbon impact with simple actions
Intermediate24h1–3
ReactFirebaseChart.js
16/20
Climate
Receipt Carbon Estimator
Shows the carbon impact of everyday purchases
Intermediate36h2–3
Next.jsOCRLLM
16/20
Climate
Recycling Sorter Camera
Point a camera at an item and it tells you which bin it goes in
Intermediate20h2–3
YOLOPythonNext.js
16/20
AI
Closet Outfit Planner from Photos
Photograph your clothes once and get weather-aware outfit ideas daily
Intermediate18h1–3
Vision LLMWeather APINext.js
15/20
Climate
Home Energy Usage Tracker
Shows which appliances use the most energy
Intermediate12h1–2
ReactCharts
15/20
Climate
Solar Roof Estimator
Estimates yearly solar output and payback for a roof
Intermediate24h1–3
PythonpvlibReact
15/20
Climate
Cafeteria Food Waste Tracker
Shows which dishes get thrown away so kitchens cook less waste
Intermediate36h2–3
Next.jsVision LLMCharts
15/20
Climate
Low-Carbon Commute Compare
Compares commute options by time, cost and CO₂ side by side
Beginner12h1–2
Next.jsMaps APICharts
15/20

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