The work

Three kinds of engagement.

Life cycle assessment

Cradle-to-grave studies to ISO 14040 and 14044, built on production data, ready for an EPD where the result will be published.

Critical review

I review studies other teams produce, against the standard and the product category rules, before they are published.

Greenhouse gas inventories

Corporate and value chain inventories to the GHG Protocol, built from records operations already keep, with a method the organization runs itself.

Selected work

Ieropoulos Wines

Nemea, Greece

An organic winery needed its wine's carbon footprint, and the place to act, before making any claim about it.

Cradle-to-grave footprint to International EPD System and wine product category rules, modelled in GaBi against 2014 production data, every process rated for data quality.

2.9 kg CO2e per litre. The easiest lever was the bottle, not the cooling: a bottle half the weight would cut the footprint by about 13%, and the winery only had to order it.

Summary report

Where the footprint sits

23% 23% 54%

Bottle productionFermentationEverything else

23%of the footprintThe bottle the winery buys, and could simply order lighter.

Ieropoulos Wines carbon footprint summary report, 2015. Shares of 2.9 kg CO2e per litre, cradle to grave, rounded; "everything else" is the balance. The 13% is the report's sensitivity analysis for a 50% lighter bottle (12.7%), rounded.

City of Toronto

The City had committed to cut food-related emissions 25% by 2030, with no baseline to cut from.

We built the baseline across three divisions to WRI Cool Food Pledge and GHG Protocol methods, then the reporting tool the City tracks it with.

44,000 tonnes CO2e from 7 million meals a year, and a costed path to cut a quarter of it by 2030.

Project report CBC coverage

What the City buys

3%of the weightA rounding error in the shopping basket.

48%of the emissionsNearly half the footprint, in one segment.

Beef and lambOther animal-basedPlant proteinsOther plant-based

All 13 items, every measure

Beef and lamb 3% of weight, 48% of emissions
Dairy 29% of weight, 21% of emissions
Poultry 4% of weight, 6% of emissions
Pork 2% of weight, 4% of emissions
Eggs 3% of weight, 3% of emissions
Seafood 2% of weight, 3% of emissions
Grains 13% of weight, 4% of emissions
Legumes, nuts, seeds 2% of weight, 2% of emissions
Fruits and vegetables 32% of weight, 3% of emissions
Roots and tubers 5% of weight, <1% of emissions
Vegetable oils 2% of weight, 2% of emissions
Added sugars 2% of weight, 1% of emissions
Alcohol, stimulants, spices 1% of weight, 3% of emissions

Panagiotakopoulos, Onwudiwe and Wills (2024), City of Toronto Food-Related GHG Emissions and Analysis. 2022 figures, shares as published, rounded.

Also worked with

Carbon accounting: Strathallen, Grivalia Properties
Life cycle assessment: Ingredion, International Paper, ThredUp, Hanes, Rent the Runway, Copernicus Educational Products, StackTeck

Executive AI coaching and the rest of the practice

Numbers that survive review.