Shift EV charging, laundry and dishwasher runs to the cleanest grid hours
Intermediate14h1–2
Electricity Maps APINext.jsCharts
17/20#carbon hackathon ideas
14 ideas across 2 categories · 5 beginner · 8 intermediate · 1 advanced. Sorted by judging fit (editorial estimate).
Ideas tagged carbon
Compare running cost and emissions of your current system with an efficient one
Beginner8h1–2Next.jsCharts17/20Show an estimated carbon label on each menu item
Beginner10h1–2Next.jsTailwindJSON17/20Scan a clothing tag and see its estimated water and carbon footprint
Beginner8h1–2Tesseract.jsNext.js17/20Climate
Carbon-Aware CI Scheduler
Delay non-urgent CI jobs to cleaner grid hours automatically
Intermediate14h1–2GitHub APIElectricity Maps APINode.js17/20Compete with friends to stay under a weekly carbon budget
Beginner10h2–4Next.jsFirebaseCharts17/20Prove a carbon credit was retired once and only once
Intermediate16h2–3SolidityOpenZeppelinNext.js17/20Climate
Personal Carbon Tracker
Gives daily feedback on carbon impact with simple actions
Intermediate24h1–3ReactFirebaseChart.js16/20Climate
Receipt Carbon Estimator
Shows the carbon impact of everyday purchases
Intermediate36h2–3Next.jsOCRLLM16/20Climate
Home Energy Audit by Photo
Photograph your appliances and get the biggest energy-saving fixes ranked
Intermediate16h1–2Vision LLMNext.jsCharts16/20Climate
Delivery Route CO2 Optimizer
Plan delivery routes that cut distance and emissions, not just time
Advanced28h2–4PythonOR-ToolsLeaflet16/20Climate
Low-Carbon Commute Compare
Compares commute options by time, cost and CO₂ side by side
Beginner12h1–2Next.jsMaps APICharts15/20Collect emissions data from suppliers with a simple guided form
Intermediate16h1–3Next.jsPostgresCharts15/20Climate
ESG Report Claim Extractor
Pull every climate target and claim from a company report and check for vagueness
Intermediate18h1–3MarkItDownLLMNext.js15/20