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Three businesses, part 2/4: the bioconversion service
Biowaste in at a gate fee. Live larvae and unprocessed frass out. That is the bioconversion service — the engine every BSF operation is built on, and part 2 of this series. Without a case where substrate source can be converted to better value with BSF larvae than in any other way (or with less costs), there is no need to get into details of CAPEX and OPEX.
01 · The boundary
What this service leaves out
Note what is not in that sentence. No breeding — neonates are a purchased input, like electricity. No post-processing — the moment you dry, treat or package, you have left this business. And no processed product sales: larvae and frass leave at a transfer price to the group's own downstream businesses, or at a market price to an external buyer.
02 · The checklist
Five things to get right
What does this business actually need to get right?
- 1. Gate fee versus real cost per tonne. The fee is earned on what the weighbridge accepts — packaging, rejects and all. The cost is incurred the hard way: receiving, pre-processing, rearing, and disposing of what the larvae cannot eat. The spread between the two is the business. You might get substrates with minimal post-processing needs, but eventually gate fee determines the case as live larvae and frass price, outside toxins and restrictions, doesn't hugely jump beyond a price ceiling.
- 2. Pre-processing tuned to the stream. Every waste stream brings its own moisture, contamination and particle size. The pre-processing line is where a generic BSF plant becomes your plant, and the competitive advantage and moat.
- 3. Yield on a stated basis. Kilos of live larvae out per tonne of substrate in — wet-to-wet is not dry-to-dry, and a precise number on the wrong basis is still misleading.
- 4. Neonate price exposure. Starter stock is a recurring cost you don't control unless you own a breeding business (part 4). What you pay per gram decides whether your yield is a profit or a rounding error. This is where rearing modules, HVAC system and recipe optimization allows you to get costs down as much as possible.
- 5. Utilisation and uptime. Modules that sit empty cost the same as modules that work. The rearing calendar is the throughput clock.
03 · The discipline
The honest comparison boundary
Here is the discipline that makes this business evaluable: its two products are the only honest comparison point it has. Benchmark equipment, modules and facilities at this boundary — larvae and frass out — and you are comparing like with like. Drag post-processing promises into the comparison and every vendor's number becomes unfalsifiable and complex.
And this framing prevents the classic failure: a solid bioconversion operation judged on its downstream's dreams. If this business cannot stand on the gate fee plus what someone will honestly pay for larvae and frass, no amount of product-side optimism fixes it.
04 · The series
What comes next
Next: the business that buys this one's output — and why its input price is the engine's price too.
Does your gate fee plus an honest price for live larvae and frass cover the engine on its own?
Keep exploring
Related topics and pages
- BSF business course — the course that owns the business-route comparison
- One operation, three businesses, part 1/4: the principle — the framing that splits the operation into three businesses
- Articles library — the library this post joins
Read next
- One operation, three businesses, part 1/4: the principle — the opening post that names the three businesses inside one operation
- BSF is a waste business — the waste-business framing behind the bioconversion service
- Three routes to a BSF business — the three routes a case can follow, each still running these businesses
Next step
Test the engine on its own numbers
Manna can help test whether the gate fee plus an honest price for live larvae and frass covers the bioconversion service on its own.