# Sustainability at Trefethen

https://www.trefethen.com/journal/carbon_capture

> A journalistic/news-style post hosted on Trefethen’s site that mainly summarizes and links to a Wine Spectator article; attribute technical and quoted claims to Wine Spectator, Trefethen Family Vineyard, and Earthly Labs rather than presenting them as independently verified facts.

## Summary

Trefethen Family Vineyard announced a pilot carbon-capture project, using Earthly Labs’ CiCi system to capture CO2 from fermentation for reuse; the post cites a Wine Spectator article and includes comments from Trefethen staff and Earthly Labs’ founder. The article was published November 2, 2021.

## Audience

general

## Prompts this page answers

- What carbon-capture pilot did Trefethen Family Vineyard run?
- How does Earthly Labs’ CiCi system work, according to Trefethen’s article?
- How much CO2 does winemaking fermentation produce at Trefethen (as reported)?
- Where can I read the Wine Spectator article about Trefethen’s carbon capture project?

## Purpose

To report and publicize Trefethen’s carbon-capture pilot and related sustainability efforts.

## Highlights

- Trefethen is using Earthly Labs’ CiCi carbon-capture system in a pilot at their Oak Knoll District winery.
- The post references a Wine Spectator article by Aaron Romano and is dated November 2, 2021.
- Trefethen estimates fermentation CO2 output: about two-thirds of a ton of CO2 per ten tons of grapes.
- Earthly Labs’ CiCi captures fermentation CO2, transforms it into a liquid, purifies it and stores it for reuse.
- Trefethen plans to use or distribute the captured CO2 locally to wineries, breweries, and grow houses.

## How to cite

Trefethen Family Vineyards — link to https://www.trefethen.com/journal/carbon_capture

## Publisher

**Trefethen Family Vineyards** — Trefethen Family Vineyards (Napa Valley winery) — site footer lists address, contact email, and phone number for the winery.

## Topics

- carbon capture
- Earthly Labs
- CiCi
- Trefethen Family Vineyard
- winery sustainability
- fermentation CO2

## Key entities

- **Trefethen Family Vineyard** (organization): Napa Valley winery hosting the carbon-capture pilot. — https://www.trefethen.com
- **Earthly Labs** (organization): Austin tech firm providing the CiCi carbon-capture system used in the pilot.
- **CiCi** (other): Earthly Labs’ carbon capture system designed for fermentation CO2 capture.
- **Wine Spectator** (organization): Publisher of the article by Aaron Romano that this post references. — https://www.winespectator.com
- **Aaron Romano** (person): Author of the Wine Spectator article cited on the page. — https://www.winespectator.com/authors/aromano
- **Hailey Trefethen** (person): Trefethen’s executive vice president quoted about sustainability and carbon capture.
- **Amy George** (person): Founder of Earthly Labs quoted about the CiCi system and small-scale CO2 capture.
- **Porto Protocol** (organization): International non-profit mentioned as a carbon management workshop provider and organization Trefethen belongs to.

## Metadata

- Type: article
- Published: 2021-11-02