# CH4 Global

Canonical page: https://technooptimist.io/companies/ch4-global
Grows Asparagopsis, a red seaweed that suppresses methane made in a cow's gut, in ponds in South Australia, and sells it as Methane Tamer, a feed supplement for feedlot cattle.

## In brief

- Opened the first commercial-scale Asparagopsis farm, the Louth Bay EcoPark, in Jan 2025.
- Methane Tamer is fed at 0.5% of the diet; company claims up to 90% less burped methane.
- Beef from Methane Tamer cattle has been on sale in South Australia since 2025.

## Facts

- Headquarters: US, AU, NZ
- Status: private
- Raised: $29M
- Website: https://ch4global.com
- Frontiers: [Agriculture](https://technooptimist.io/agriculture.md) (Feed additives & insect feed)

## Programs

- [Methane Tamer & Louth Bay EcoPark](https://technooptimist.io/agriculture/methane-tamer.md) (Agriculture): Deploy; next: Expand to 100 ponds (45,000 cattle a day). EcoPark phase one (10 ponds, 80 t a year) running since Jan 2025; expansion to 100 ponds pending.

## Technical approach

- **Cultivation: Ponds, not tanks or sea ropes**: Seaweed grows in in-ground saltwater ponds under poly tunnels, using sunlight and passive heating instead of lit, climate-controlled tanks.
- **Product: Dried seaweed in a feed premix**: Harvested Asparagopsis is dried and formulated into Methane Tamer, blended into feedlot rations at about 0.5% of the daily mix.
- **Effect: Less methane from every animal**: Cattle fed the supplement burp out much less methane; CH4 Global guarantees at least a 70% cut through the product's shelf life.

## Open problems

- **Scaling seaweed supply** (open): Phase one makes about 80 t a year; supplying tens of thousands of cattle a day needs the planned 100 ponds.
- **Who pays for lower methane** (open): Feedlots need a buyer to cover the cost: a beef premium, carbon credits or retailer demand.

## Latest updates

- **15 Sep 2025**: South Australian butcher Windsor Meats sells the first Wagyu raised on CH4 Global's Methane Tamer. Windsor Meats began selling Wagyu beef from cattle fed Methane Tamer for 400 days. ([our story](https://technooptimist.io/stories/south-australian-butcher-windsor-meats-sells-the-first-wagyu-raised-on-a0124aa1.md) · [original source](https://ch4global.com/2025/09/15/real-world-progress-windsor-meats-sells-the-first-methane-tamed-wagyu-an-interview-with-sam-burt/))
- **29 Jan 2025**: CH4 Global begins production at the first commercial-scale Asparagopsis growing facility in South Australia. The first phase of CH4 Global's EcoPark at Louth Bay, South Australia, opened with ten 200,000-litre ponds producing more than 80 tonnes of Asparagopsis a year. ([our story](https://technooptimist.io/stories/ch4-global-begins-production-at-the-first-commercial-scale-asparagopsis-bf52ba95.md) · [original source](https://agfundernews.com/ch4-global-begins-production-at-worlds-first-commercial-scale-asparagopsis-growing-facility))
- **1 Sep 2023**: CH4 Global raises US$29M to build its Asparagopsis EcoPark. CH4 Global raised US$29 million for the second phase of its development: building and validating its EcoPark, where the red seaweed Asparagopsis is grown and processed at low cost. ([our story](https://technooptimist.io/stories/ch4-global-raises-us-29m-to-build-its-asparagopsis-ecopark-505292ef.md) · [original source](https://thefishsite.com/articles/ch4-global-raises-29-million-to-expand-operations))

## Funding

| Date | Round | Amount | Post-money | Leads |
| --- | --- | --- | --- | --- |
| Sep 2023 | Growth round | $29M |   |   |

## Partners, customers and investors

- CirPro (customer): Offtake agreement; first commercial supply of an Asparagopsis supplement in Australia.
- Mitsubishi Corporation (partner): Strategic partnership to speed adoption in Asia-Pacific.
- UPL (partner): Multi-year deal targeting India, Brazil, Argentina, Uruguay and Paraguay.
- Lotte (customer): Its Australian subsidiary feeds the supplement to Wagyu cattle.
- AgFunder (investor)

## People

- Steve Meller, Co-founder & CEO

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