Plant-based meat is significantly better for the environment than beef, and moderately better than pork, but the advantage shrinks or disappears when compared to chicken. A plant-based burger produces roughly 77% less greenhouse gas emissions than a beef burger, uses about 21 times less water, and requires a fraction of the land. The picture gets more complicated once you look beyond beef, though, and a few environmental categories actually favor conventional meat.
The Climate Advantage Over Beef Is Enormous
Swapping a beef patty for a plant-based one cuts the climate impact by 77% or more, depending on how you measure it. When researchers account for nutritional density (adjusting for fiber and essential fatty acid content per serving), the gap widens further: plant-based patties carry 81 to 87% less climate burden per unit of nutrition delivered.
Those numbers grow even larger when you factor in what scientists call the “carbon opportunity cost” of land. Cattle ranching occupies vast stretches of territory that could otherwise be forest or grassland, pulling carbon dioxide out of the atmosphere. Once that lost carbon storage is included, the climate advantage of plant-based patties increases by another 25 to 44%. Commercial brands lean into these findings. Beyond Meat’s own lifecycle analysis claims a 90% reduction in greenhouse gas emissions compared to beef, though independent researchers note that proprietary recipes make those brand-specific numbers difficult to verify.
Water Use Tells a Similar Story
Producing a single 150-gram beef burger requires roughly 3,900 liters of water when you add up irrigation, rainfall absorbed by feed crops, and water needed to dilute pollutants. A plant-based soy burger of the same size needs about 160 to 184 liters. That makes the beef burger roughly 21 times more water-intensive.
Most of beef’s water footprint comes not from the animals drinking, but from growing the enormous quantities of feed grain they consume over their lifetimes. Plant-based meat skips that conversion step entirely, turning crops directly into a finished product rather than routing them through an animal first.
Land Use Favors Plants, With One Exception
It takes 14.2 times more farmland to produce a pound of beef than a pound of plant-based meat, and 1.7 times more farmland for a pound of pork. Those ratios reflect how inefficient it is to convert feed crops into animal tissue: most of the calories an animal eats go toward keeping it alive, not building muscle.
Chicken is the exception. Producing a pound of chicken requires only about 96% of the land needed for a pound of plant-based meat, making it slightly more land-efficient. Chickens convert feed into body weight far more effectively than cattle or pigs, which narrows the gap enough that plant-based products lose their edge on this single metric.
The broader land question matters beyond just acreage. About two-thirds of the world’s pastureland can’t be converted to cropland, meaning it’s only useful for grazing. But the remaining third, plus the vast tracts used to grow animal feed, could theoretically return to forest or wild grassland if demand for meat dropped. That rewilding would benefit both biodiversity and carbon storage.
The Gap Narrows for Chicken and Pork
When researchers compare greenhouse gas emissions per unit of protein, the differences between plant-based meat and various animal products vary widely. Beef from dedicated beef herds sits at the extreme end, producing 93% more emissions than plant-based protein sources. Pork comes in at 63% more, and poultry at 43% more. Those are still meaningful reductions, but they’re a far cry from the dramatic 77 to 90% gap you see with beef.
For certain processed plant-based products, the advantage over chicken nearly vanishes. Extruded plant-based meat (the type that goes through high-pressure manufacturing to create a meat-like texture) produces 7.7 to 7.9 kilograms of CO2 equivalent per kilogram of protein. Chicken protein falls in the range of 7.7 to 11.3 kilograms. That means at the low end, the two are essentially tied on carbon emissions alone.
Energy and Water: Where Plants Don’t Always Win
Plant-based meat requires significant industrial processing: ingredients like pea protein or soy isolate must be extracted, concentrated, and then forced through extruders at high temperatures and pressures to create a fibrous, meat-like texture. That processing consumes energy. One lifecycle analysis found that plant-based patties actually use 8% more non-renewable energy than Brazilian beef patties.
Water footprint comparisons also become less clear-cut beyond beef. When researchers looked across multiple categories, including pork and poultry, plant-based meat substitutes and mycoprotein products sometimes matched or exceeded the water and energy footprints of conventional meat on a per-kilogram basis. The manufacturing facilities that produce these products are still relatively new and small-scale, which limits efficiency gains that larger, more established meat processing plants have already achieved.
There are signs this gap could close. Optimizing production processes within plant-based meat facilities has already achieved 20% reductions in energy consumption and 15% decreases in waste in some cases. Newer extrusion techniques can operate at lower temperatures, saving energy while improving the texture of the final product.
Nutrient Runoff and Water Pollution
One of the less-discussed environmental benefits of plant-based meat is its impact on water pollution. Livestock operations generate massive amounts of nitrogen and phosphorus from animal waste and fertilizer-heavy feed crops. These nutrients wash into rivers, lakes, and coastal waters, feeding algal blooms that deplete oxygen and kill aquatic life.
Plant-based patties produce 92 to 95% less marine eutrophication (the technical term for this nutrient pollution) per unit of nutrition compared to beef. This is one of the largest environmental gaps between the two products, even bigger than the climate difference.
Ingredient Sourcing Creates Its Own Pressures
The main protein sources for plant-based meat (soy, yellow peas, and wheat) come with environmental baggage of their own. Soy cultivation has been a major driver of deforestation, particularly in South America, though the soy used in plant-based meat represents a tiny fraction of global production (most soy is grown for animal feed). Concerns about deforestation and allergenicity have pushed the industry toward yellow pea and wheat protein in recent years.
Large-scale monoculture farming of any crop reduces biodiversity, depletes soil over time, and depends on synthetic fertilizers. These are real trade-offs, but they apply to the feed crops grown for livestock too, and at a much larger scale. Producing a pound of beef requires growing and harvesting over 14 times more plant material than producing a pound of plant-based meat directly.
The Bottom Line by Protein Type
- Versus beef: Plant-based meat wins decisively on nearly every environmental measure: 77 to 90% less climate impact, 21 times less water, 14 times less land, and over 90% less water pollution.
- Versus pork: Plant-based meat still comes out ahead, using about 40% less land and producing significantly fewer emissions, though the margins are smaller.
- Versus chicken: The comparison is close. Plant-based options produce somewhat fewer emissions in most analyses, but chicken uses slightly less land, and the two can be nearly identical on carbon when processing energy is factored in.
If you’re choosing between a plant-based burger and a beef burger, the environmental math is overwhelming and consistent across dozens of studies. If you’re choosing between plant-based nuggets and chicken nuggets, the environmental case is real but modest, and depends heavily on which specific impact you care most about.