LIT_137: Humbird (2021) - techno-economic analysis: cultured-meat cost floor ~$37/kg, unaffordable as food

LIT_137: Humbird (2021) - techno-economic analysis: cultured-meat cost floor ~$37/kg, unaffordable as food

Source

doi:10.1002/bit.27848 — original publication (opens in a new tab; the file is not redistributed)

Summary

David Humbird’s Scale-up economics for cultured meat is a peer-reviewed techno-economic analysis (Biotechnology and Bioengineering, 2021, open access, funded by Open Philanthropy) asking whether animal-cell-culture “cultured meat” could ever be produced cheaply enough to displace conventional meat. Drawing on industrial fermentation and upstream biopharmaceutical practice, it models conceptual bulk cell-production facilities (fed-batch and perfusion) from first principles plus Aspen Capital Cost Estimator, and finds that biological limits (low growth rate, catabolite inhibition, shear damage, ammonia and CO2 accumulation) cap practical bioreactor volume and cell density, forcing high capital cost and expensive purified media. The conclusion is that even at industrial scale the products would likely be unaffordable as food, and that metabolic-efficiency gains and cheap plant-hydrolysate media are necessary but insufficient conditions for cultured meat to displace farmed meat.

Key claims

See key_claims frontmatter (7 claims, each cited to the section, page and verbatim wording in the raw). Headline figures: cost of production 37/kg (fed-batch) and ~51/kg (perfusion) wet cell mass; total capital investment 328-663 M; author's affordability target ~25/kg bulk cell mass ($50/kg retail minimum).

Neobiome Intelligence relevance

This source does not feed a model cell. It is thesis-side background that substantiates why cultured meat (cellular agriculture) sits in the project’s Excluded technology set, the counterfactual that demonstrates Neobiome’s sustainable and self-contained selection philosophy (alongside vertical farming and precision fermentation).

Humbird supplies the authoritative techno-economic basis for that exclusion at the community scale on two Neobiome selection criteria:

• Affordability. Even at a 100 kTA industrial facility serving ten million consumers, the modelled cost floor is ~$25-37/kg wet cell mass, above the price of conventional meat. A remote off-grid community operating at a tiny fraction of that scale has no path to those economics.
• Self-containment. The process depends on $328-663 M sterile Class 8 clean-room bioreactor plant and continuous purchased inputs (pharma-grade amino acids, recombinant protein growth factors such as insulin, transferrin and FGF). That capital intensity and external-input dependency is the opposite of the low-capital, locally-sourced food systems Neobiome selects for.

So cultured meat fails the selection test on both grounds, and this paper is the citation that documents it. Boundary note: the source substantiates an exclusion; it is not modelled and contributes no engine parameter.

Research targets

No new research targets. This retrieval stands as complete background evidence for the excluded-technology counterfactual; it does not open a modelling gap. Cultured meat is not being modelled, so no NZ recalibration is required.

Notes

• All quantitative claims were extracted verbatim from the source PDF via pdftotext -layout and page-located against the printed page numbers (3239-3250).
• Open-access article; public home is the DOI 10.1002/bit.27848.
• Widely cited in the cellular-agriculture affordability debate; treat as a rigorous conceptual model, not field-validated cost data.