Château Tours des Termes becomes IWCA Silver Member

SANTA ROSA, CALIF. & VILAFRANCA DEL PENEDES, SPAIN. October 2025) – Château Tours

de Termes, St Estèphe has just become a silver member of IWCA.

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International Wineries for Climate Action (IWCA) is delighted to announce that leading Bordeaux

producer Château Tours des Termes, St. Estèphe, has achieved the coveted status of Silver Member of the IWCA.

Lesley O'Connor, on behalf of the O'Connor family and owner of Château Tours des Termes, said,

“Achieving silver membership with International Wineries for Climate Action marks a milestone on Tour des Termes’ journey as a climate leader. It reflects our family’s mission, values, and vision for the vineyard. Since my father Eddie O’Connor acquired the estate in 2023, we’ve been transforming, building the first LEED-certified wine cellar in France, aiming for full renewable energy independence, and creating new wines that stay true to Saint-Estèphe’s terroir.

“This recognition shows we’re serious, verifiable, accountable, ambitious,” she continued, “but also that we have more to give: more life in our soils, more biodiversity, more flavor uniting heritage and ambition. We see ourselves not just as custodians of vines and land, but storytellers of a place in transition. To be recognized now at this moment of evolution is energizing for us as owners, and we celebrate the team who have got us this far. But the real work is only just beginning.”

IWCA is a rapidly growing collective of wine-producing companies present in 14 countries across the globe. Representing approximately 3.5% of global wine production, its members form a unified voice for change, promoting reduction in carbon emissions and setting the standard for decarbonization internationally. The organization’s certification is recognized globally with retailers and industry professionals and authenticates winery action to promote emission reduction.

IWCA is a rapidly growing collective of wine-producing companies present in 14 countries across the globe. Representing approximately 3.5% of global wine production, its members form a unified voice for change, promoting reduction in carbon emissions and setting the standard for decarbonization internationally. The organization’s certification is recognized globally with retailers and industry professionals and authenticates winery action to promote emission reduction.

Château Tours des Termes is owned by the O'Connor family, who has a strong background in renewable energy in Ireland. Their acquisition of the property fulfills their passion for wine, bringing the entire family together for the greater good.

“We are delighted to welcome celebrate Château Tours des Termes Silver Membership of IWCA,” said Katie Jackson, President of IWCA and Vice President of Sustainability at Jackson Family Wines. “This reinforces the presence of IWCA in France and Europe. As vine growers, we are severely suffering from the consequences of climate change, our duty to future generations is to act now. We hope that many more wineries, inside and outside our country, join our cause to accelerate the decarbonization of the wine industry.”

Join the movement

IWCA actively invites wineries interested in its mission to contact us. The organization is open to any wine company involved in the production process from winegrowing to bottling that believes in taking strategic action to accelerate innovative climate solutions.