There is a certain elegance to the idea of turning a cow's burp into jet fuel. It is a neat, closed-loop solution to a famously messy problem. PLANET.TECH, a cleantech startup with a website at planet.tech, is betting on that elegance. The company is developing a wearable collar for cattle that captures methane emissions at the source, then processes the captured gas into renewable natural gas and sustainable aviation fuel at the milking station [planet.tech, retrieved 2024].
For a climate editor, the unit economics are what make you lean in. The company claims its system can generate over $800 in new annual revenue per cow, a figure that includes sales of the processed gas and various environmental credits [PLANET.TECH, retrieved 2024]. That is a number a dairy farmer can understand. It is also an ambitious one, given the technical and logistical hurdles of capturing a diffuse, biologically produced gas from a mobile animal in a field.
The methane capture wedge
The core of PLANET.TECH's bet is a hardware wedge: a collar that fits on a dairy cow. The company says its field trials have achieved a 28.8% capture efficiency for enteric methane [PLANET.TECH, retrieved 2024]. That is the critical, unverified metric. If they can maintain or improve that rate at scale, the revenue math starts to work. The captured methane is extracted when the cow visits the milking station, then upgraded to pipeline-quality renewable natural gas, which commands a premium price. The business model is built on layering revenue streams:
- Gas sales. Selling the upgraded biomethane into the natural gas grid or for vehicle fuel.
- Carbon credits. Monetizing the avoided methane emissions in voluntary carbon markets.
- Policy credits. Capturing value from government programs like Renewable Identification Numbers (RINs) and California's Low Carbon Fuel Standard (LCFS) credits [planet.tech, retrieved 2024].
This multi-pronged approach is common in climate tech, where policy tailwinds are often as important as the technology itself. The challenge is executing on all fronts at once.
An early and crowded field
PLANET.TECH is not alone in chasing agricultural methane. The competitive landscape includes companies like ZELP, which also makes a wearable device for cattle to neutralize methane, and Alga Biosciences, which is developing a feed additive to reduce emissions from within the cow's gut [zelp.co, retrieved 2026]. The different approaches highlight the technical uncertainty. Is it better to capture the methane after it is produced, or to prevent its formation altogether? PLANET.TECH is firmly in the capture-and-utilize camp, which offers the potential for a tangible energy product instead of just an avoided emission.
The company's public footprint is currently light, with no disclosed funding rounds or named team on its site. This suggests a very early, perhaps pre-prototype stage. The bold claims of a 14% potential reduction in global methane emissions at full deployment are exactly that: potential [PLANET.TECH, retrieved 2024]. They are a vision statement, not a traction metric.
The path forward is a steep climb of hardware iteration, farm pilot agreements, and proving that the $800-per-cow promise holds outside a controlled trial. On paper, the back-of-the-envelope calculation is simple: one dairy cow burps about 100-150 kilograms of methane annually. Capturing even a third of that represents a significant volume of gas. The real test is whether PLANET.TECH's collar can do it reliably, without stressing the animal or complicating farm operations, for a cost that leaves a healthy margin after all that gas and credit revenue is counted. To succeed, it will have to beat not just other startups, but the incumbent solution of doing nothing,a choice that currently costs the farmer nothing at all.
Sources
- [planet.tech, retrieved 2024] PLANET.TECH, Turning Cow Burps Into Clean Energy | https://planet.tech/
- [PLANET.TECH, retrieved 2024] Company claims on revenue and capture efficiency |
- [zelp.co, retrieved 2026] ZELP - Creating a sustainable future for agriculture | https://www.zelp.co/