International Wineries for Climate Action (IWCA)

By Charlotte Owen-Burge | June 30, 2021

Initiative overview

International Wineries for Climate Action (IWCA) is a non-profit collaborative working group of environmentally committed wineries taking a science-based approach to reducing carbon emissions across the wine industry. Our goal is to share best practices that mitigate climate change impacts in vineyard and winery operations so that we can act collectively to decarbonize the global wine industry—applying direct solutions that avoid purchasing carbon offset credits.

Benefits: IWCA creates a collaborative community of like-minded businesses that encourages the knowledge sharing and exchange of best practices for mitigating climate impacts in vineyard and winery operations. The more wineries that participate in IWCA, the louder our voice will be to raise awareness on climate change and to urge immediate, global action. Given the science-based approach of IWCA and the strictness of our requirements, participating wineries are perceived as strongly and sincerely committed in the fight against climate change.​ Furthermore, IWCA makes available on its website a free GHG calculator which is intended to reduce the costs of elaborating a GHG inventory for any given winery.

Geographic coverage: International

Suitable for: Wineries and the wine sector

Case studies: IWCA is constantly thinking new ways to accelerate the transition towards a Net Zero future for the wine sector. A first soil health report was released in 2021 to start a benchmark of carbon sequestration initiatives. Also, the IWCA standard calculator has been developed for the United States, New Zealand and Australia and is expected to be developed in many other countries with the aim to help wineries with fewer resources in their GHG accounting task. IWCA’s working groups are also intended to attack emission hotspots by means of benchmark, direct collaboration between wineries, raising awareness, knowledge sharing and creating external alliances.

How to join: Wineries can join IWCA by applying on the IWCA website by filling in the contact form. The IWCA Secretariat will get in touch with them and all they must do is sign and send the IWCA Standing Rules document they will have received. Fees apply and are stated on the Standing Rules. The candidate winery will then have 12 months to verify with a third-party audit company its GHG inventory, following the ISO14064 standard and IWCA requirements (basically encompassing emission scopes 1-2-3 from the vineyard until the final consumer).

Website: International Wineries for Climate Action (IWCA) (

Contact Name / Email: Josep Ribas /