Alcoholic Beverages — Beer

Material Composition Assumptions

A standard 330ml serving of beer — whether in a can or bottle — involves a complex chain of agricultural, malting, brewing, and packaging processes. The total system weight of a 330ml aluminium can of beer is approximately 380–400 g (330 g beer + 15 g aluminium can body + accessories). A 330ml glass bottle weighs 550–700 g total. The CCI score of 0.7 kgCO2e is based on a blended packaging mix (approximately 55% aluminium can, 45% glass bottle), reflecting the global shift toward canned beer. Key material inputs include:

• Malted barley: The primary fermentable ingredient, approximately 90–160 g per 330ml for a standard lager at 5% ABV. Malting (steeping, germinating, kiln-drying) is energy-intensive but typically accounts for a modest share of total system emissions.
• Hops: Used in small quantities (0.5–3 g per litre depending on beer style), contributing negligible mass but carrying a significant agricultural footprint per unit due to intensive land and water use.
• Water: Approximately 3–7 litres of process water consumed per litre of beer produced. Water treatment and wastewater handling add to the brewery’s energy load.
• Yeast: Cultured and re-pitched across multiple brew cycles; contributes minimal direct emissions.
• Adjuncts: Corn, rice, or wheat used in some lager styles to lighten flavour and colour; their agricultural footprints are included in the S3 agricultural component.
• Aluminium can (55% of packaging mix): A standard 330ml aluminium can weighs approximately 13–15 g. At ~10–12 kgCO2e/kg for primary aluminium and typically 50–70% recycled content in cans, this contributes ~0.10–0.15 kgCO2e per can.
• Glass bottle (45% of packaging mix): A 330ml glass beer bottle weighs 200–300 g. At ~0.7–1.0 kgCO2e/kg for glass, this contributes ~0.14–0.30 kgCO2e per bottle.
• Secondary packaging: Cardboard multipacks, shrink wrap, and corrugated shipping cases add approximately 0.02–0.04 kgCO2e per 330ml unit.

Why the Score Is What It Is

Beer’s footprint of 0.7 kgCO2e per 330ml serving sits significantly below wine and spirits on a per-serving basis, reflecting lower alcohol content, domestic production proximity for most consumers, and reasonably efficient large-scale industrial brewing. Scope 3 dominates at ~67% but the two largest contributors — agricultural inputs and packaging — are roughly co-equal, unlike food categories where one clearly dominates.

Packaging (~32% of total) is the largest single hotspot once blended across can and bottle formats. Aluminium cans require large amounts of energy-intensive primary aluminium if made from virgin material, but the global beverage can industry has invested heavily in recycled-content sourcing: the average North American and European beverage can contains 65–70% recycled aluminium, reducing the can’s footprint to approximately 0.10–0.12 kgCO2e. Glass bottles for beer are heavier than equivalent wine packaging per unit of liquid, making them slightly less favourable on a per-serving basis than lightweight wine bottles.

Malted barley and hop cultivation (~30% of total) drives Scope 3 agricultural emissions. Barley cultivation uses moderate nitrogen fertiliser rates (90–150 kg N/ha), and malting requires thermal energy (predominantly natural gas) for kiln-drying. The agricultural footprint per litre of beer is lower than for wine because grain fermentation yields higher alcohol per unit of raw ingredient than grape fermentation.

Brewing and fermentation (~21% of total, primarily Scope 2) covers the brewery’s electricity and thermal energy for mashing, wort boiling, fermentation temperature control, bright beer conditioning, and filtration. Large-scale industrial breweries (Anheuser-Busch InBev, Heineken, Carlsberg) have invested in heat recovery, biogas from wastewater treatment, and renewable electricity procurement, reducing their Scope 2 intensity significantly.

Distribution (~12%) is typically local or regional for most beer consumed in major markets. Refrigerated distribution adds to the logistics footprint relative to ambient-temperature beverages.

What Drives Variation

Packaging format is the most influential variable within the brewer’s control. A 330ml aluminium can at 70% recycled content has a significantly lower packaging footprint than a 330ml glass bottle, particularly when the glass is produced in a coal-intensive grid. Draught beer served in a pub or restaurant with a reusable keg and glass has a packaging footprint approaching zero, potentially reducing total emissions per serving by 30–40% relative to a packaged unit.

Beer style and strength affect raw material intensity. A double IPA at 8% ABV requires approximately 60% more malt per unit of liquid than a 4% lager, increasing the agricultural and malting component. Imperial stouts and barley wines are the most grain-intensive styles; light lagers are the least.

Brewery scale and energy efficiency drive significant variation in the Scope 2 component. Small craft breweries typically use 2–4 times more energy per hectolitre of beer than large industrial breweries due to less efficient batch sizes, lack of heat recovery, and older equipment. A craft brewery operating at 200 hL/year in a coal-heavy grid may produce beer with 2–3 times the Scope 2 footprint of an industrial brewery with heat recovery and renewable electricity.

Import vs. domestic production has a significant freight impact. An imported Japanese or Belgian beer sold in North America can add 0.08–0.15 kgCO2e per bottle in sea and road freight — a 12–20% addition to the baseline score. Locally produced craft beer sold close to the brewery minimises this component.

Grid intensity at the brewery affects Scope 2. Breweries in Scandinavia, Iceland, or those with 100% renewable power purchase agreements (PPAs) can reduce Scope 2 to near zero. Several major brewers (Heineken, AB InBev) have publicly committed to 100% renewable electricity for operations.

Manufacturing Geography

Beer is one of the most locally produced food and beverage products globally — the vast majority of beer consumed in any given country is brewed domestically. The global beer industry is dominated by a small number of multinational brewing groups: AB InBev (Budweiser, Corona, Stella Artois), Heineken, Carlsberg, and Asahi/Peroni each operate dozens of brewing facilities across multiple countries, allowing proximity to major consumption markets.

Grid intensity at brewing facilities: EU average ~300 gCO2e/kWh, USA ~390 gCO2e/kWh, China ~565 gCO2e/kWh (China is the world’s largest beer producer and consumer by volume), Brazil ~200 gCO2e/kWh (predominantly hydroelectric). Brewing energy intensity: large industrial facilities average 100–180 MJ/hL; craft breweries average 300–600 MJ/hL.

Malting barley is traded internationally from major surplus producers (France, Germany, Australia, Canada) to deficit regions, adding a modest freight component to the agricultural supply chain.

Provenance Override Guidance

Brewers can override the default CCI score using:

1. Packaging material data specifying can weight (g), recycled aluminium content (%), or bottle weight (g) and cullet rate for glass — the most impactful single override.
2. Brewery energy audit covering thermal energy per hectolitre (source: gas, biomass, biogas, district heat), electricity consumption per hectolitre, and renewable energy certificate (REC) coverage.
3. Raw material origin and freight records for malt, hops, and adjuncts, specifying freight mode and distance.
4. Wastewater treatment data — anaerobic digestion of brewery effluent producing biogas is a significant Scope 1 offset for some facilities.
5. Published sustainability report data from major brewers with third-party verified Scope 1, 2, and 3 intensity metrics.

Methodology Notes

• CCI score of 0.7 kgCO2e per 330ml represents a conservative mid-range blending aluminium can and glass bottle formats, industrial-scale brewing, and mixed domestic/regional distribution. Published ranges span 0.3 kgCO2e (reusable glass, draught, renewable brewery) to 1.5 kgCO2e (heavy glass bottle, craft brewery, imported, high-carbon grid).
• Scope breakdown: Scope 3 dominates at ~67% (0.47 kgCO2e), covering packaging materials, agricultural inputs, and freight. Scope 2 (brewery electricity) is ~21% (0.15 kgCO2e). Scope 1 (direct fuel at brewery) is ~11% (0.08 kgCO2e).
• Functional unit: One 330ml serving of beer at standard strength (4–5% ABV), cradle-to-gate at filling/canning line (refrigerated distribution, retail, and end-of-life excluded).
• Confidence is medium because packaging format mix, brewery energy intensity, and recycled content vary substantially across producers and geographies.