Aren't these new foods actually worse for the planet?
Short answer: Run on renewables, cultivated meat is projected to cut beef's climate impact by ~93%. The energy question is real, but the grid is decarbonising.
These are projections for 2030 production at scale on a clean grid, not today's pilot plants. The honest caveat: on a dirty grid the advantage shrinks, especially against chicken.
CE Delft (2021), 2030 commercial scale, both run on renewable energy
The objection
“All those bioreactors guzzle electricity. Lab meat will be worse for the climate than a cow in a field.”
The answer
This is the best of the objections, and it deserves a straight answer rather than a dismissal.
The energy point is real. Cultivated meat’s footprint is dominated by the power to run and heat bioreactors and to make the growth medium, and if that power comes from fossil fuels, the climate advantage erodes, particularly against chicken, which is already relatively efficient. Anyone telling you it’s automatically green is overselling.
But run the proper comparison. The leading independent life-cycle assessment, by CE Delft, modelled commercial-scale production in 2030 and found that on renewable energy, cultivated meat cuts the climate impact of beef by roughly 93%, pork by ~53% and chicken by ~29%, even when the conventional meat is also assumed to use clean energy. It needs far less land and produces mostly CO₂ rather than the methane and nitrous oxide that make cattle so damaging.
The decisive difference is direction. Electricity is decarbonising every year, while a cow’s methane is biology you can’t engineer away. The new product gets cleaner as the grid does; the old one is stuck.
The fair verdict: cultivated meat is not guaranteed greener today, in a pilot plant on a dirty grid. But its ceiling is far higher and its trajectory points down, while beef’s points nowhere good.