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Our vision cannot be achieved without the participation and leadership of individual wineries.


IWCA is open to any winery, from any country, that:

  • is involved in the production process from grape-growing to bottling.

  • recognizes that climate change is the most significant threat to the wine community.

  • is willing to take strategic action to accelerate innovative climate solutions.

Read about IWCA membership below and contact us if you are interested in joining or would like to learn more.


Why Join IWCA

To drive change and raise awareness around climate change in the wine sector

To learn how to measure GHG emissions and have a roadmap for reducing them

To exchange knowledge with some of the world’s most innovative and sustainable wineries

To be part of a recognized global campaign of wineries "walking the walk" on climate change

What Sets Us Apart

We are more than just a certification.

We set a high bar.

We offer wineries the concrete tools to measure and reduce their GHG emissions, and we help connect committed wineries to each other and to other experts.

Our standards are rigorous and science-based, and membership in IWCA represents the gold standard of climate action in wine. That recognition extends beyond our industry; IWCA and our members are part of the UN Race to Zero Campaign.

We give wineries a voice.

We are a member-powered organization that amplifies wineries as leaders of this global movement.


IWCA employs a three-tiered membership system that allows a diversity of wineries to join our movement—including those who might be early in their sustainability journey but are committed to climate action. Our membership requirements and milestones keep us accountable to achieving ambitious and tangible impact.

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Any winery interested in becoming an IWCA member but that has not yet fulfilled the greenhouse gas inventory requirement can join IWCA as an Applicant.


To become an Applicant, however, the winery must have completed a credible baseline GHG inventory encompassing at least Scopes 1 and 2, or have a plan to complete a credible baseline GHG inventory that encompasses Scopes 1, 2, and 3. Applicants have one year to meet IWCA membership requirements and become a full Silver- or Gold-level member.

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Must fulfill requirements #1 and #2, at a minimum.


Commit to becoming Net Zero by no later than 2050 across Scopes 1, 2, and 3, ensuring consistent reductions of emissions per liter of wine produced to meet intermediate targets by 2030 in alignment with the United Nation’s Race To Zero Campaign.


Complete a minimum baseline, third-party verified GHG inventory for a standardized set of emissions categories across Scopes 1, 2, and 3, including 90% of the organization’s volume within the region where its main winery is. The inventory must follow the World Resources Institute Greenhouse Gas Protocol and the ISO-14064 process.



Must fulfill requirements #1, #2, #3, and #4.


Self-generate onsite renewable energy that is equivalent to at least 20% of all energy consumed by the winery, as certified by independent audit.


Demonstrate a consistent reduction of emissions per liter of wine produced from a baseline emissions inventory year, as proof of proactive, ongoing commitment. This emissions reduction percentage is dependent on the baseline year and is proportional towards the winery’s Net Zero target for 2050.


Explore detailed information about IWCA membership requirements and greenhouse gas emissions inventory guidance. If your questions are not answered here, please contact us.

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