Food · Eco-Tech Hackathon · POWERFEM

GreenPlate

A Nutri-Score for the planet, computed before you eat.

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The gap

The feedback loop between plate and planet is missing.

Food drives roughly a quarter of a European household's carbon footprint, yet at the moment of choosing a meal nobody can see its impact. "Eat sustainably" gives no concrete next step.

The scaleThe EU wastes about 59 million tonnes of food a year, roughly 132 kg per person.

The blind spotCarbon labels barely exist and footprint calculators are annual and abstract, not per-meal and practical.

Who hurtsHouseholds that want to eat better, canteens deciding menus, and communities carrying avoidable food emissions.

The solution

One plate. One score. One swap.

Build a plate, get an instant A-to-E grade for its CO2 and water footprint, and receive one concrete swap. Coaching, not lecturing.

01Build the plate. Pick ingredients and portions from a built-in database of about 30 staples; totals appear instantly.
02Read the grade. A to E, colour-coded. One glance is enough.
03Take the one swap. "Half the beef to lentils cuts CO2 by 62%," with seasonal suggestions per country.
04Watch the habit form. A weekly trend turns single meals into progress: your average plate moved from D to B.

Tonight's plate · beef souvlaki

E

as built

B

with swap

Beef, 150 g9.0 kg CO2e

Pita and vegetables0.8 kg CO2e

Yogurt sauce0.5 kg CO2e

Suggested swap · in season in Cyprus Half the beef → lentils: −62% CO2e, −710 L water

Your week so far: D → C → B

The one-day build

Arithmetic over a bundled table.

The ingredient database (per-100g CO2e and water values) and the swap rules ship inside the app as plain lookup tables. The country toggle for Cyprus, Hungary, and Lithuania is the built-in transnational angle.

✓Plate builder: 3 to 6 ingredients with portions from the built-in database.
✓Instant footprint total and A-to-E score with a colour gauge.
✓One rule-based swap suggestion showing the % improvement.
✓Preset dishes (souvlaki, goulash, cepelinai) for one-tap scoring.

The 3-minute pitch

Hook: "Which has the bigger footprint, your lunch or your commute? Today, lunch."
Build a beef souvlaki plate live: score E. Apply the lentil swap: score B, with the water saving spelled out.
Show the weekly trend and flip the country toggle: the same app coaches a plate in Larnaca, Budapest, or Kaunas.

Why it wins

Judges' scorecard.

Feasibility	Pure arithmetic and rules over a bundled table; the lowest-risk logic of the whole idea set.
Impact	Targets the largest everyday footprint category with a concrete action per meal.
User-friendliness	An A-to-E score is understood in one glance; one suggested swap, not a lecture.

SDG 12 SDG 13 SDG 2 Software only No hardware No external data

Next idea: WattWise →