Jul 28, 2026 · 13 min · 9 segments
In this *From the Roundtable* episode Hanna Halmari is joined by SWR's Dr Peter Stanbury to discuss the launch of the Sparkling Bottle Weight Accord. They delve into the success of and learnings from…
Peter StanburyGuestHannah HalmariHost
Yes, we launched the Bottle Weight Accord at the end of 2023, and that was based on a piece of research we'd done earlier that year, which really said, "What should the target weight be for light-weighting of wine bottles?" As everyone knows, anything up to about 50% of the total carbon footprint of wine is the bottle it comes in, so light-weighting is something of a no-brainer.
But the issue was, and this really represents the value of SWR, um, you know, we were able to provide a sort of collaborative, combined approach.
We set a target of an average below 420 grams by the end of 2026 from what was then, so in 2023, an average of about 550 grams.
So obviously we're coming towards the end of that Bottle Weight Accord, um, comes to an end in the end of this year.
And by the end of last year, so that's two years in, the average bottle weight of those in the Accord had gone down from that 550 gram beforehand to 430, and obviously that's a significant carbon saving, nearly half a million tons of carbon saved by the Accord.
We've now got more than 20, and between them, those members make and sell a little over three billion bottles of wine, which is about 10% of all the wine made in the world.
We're really quite pleased because it's a, a very material impact in terms of not just the carbon footprint of wine, but also saving of money for our members.
Yes, we launched the Bottle Weight Accord at the end of 2023, and that was based on a piece of research we'd done earlier that year, which really said, "What should the target weight be for light-weighting of wine bottles?" As everyone knows, anything up to about 50% of the total carbon footprint of wine is the bottle it comes in, so light-weighting is something of a no-brainer.
But the issue was, and this really represents the value of SWR, um, you know, we were able to provide a sort of collaborative, combined approach.
We set a target of an average below 420 grams by the end of 2026 from what was then, so in 2023, an average of about 550 grams.
So obviously we're coming towards the end of that Bottle Weight Accord, um, comes to an end in the end of this year.
And by the end of last year, so that's two years in, the average bottle weight of those in the Accord had gone down from that 550 gram beforehand to 430, and obviously that's a significant carbon saving, nearly half a million tons of carbon saved by the Accord.
We've now got more than 20, and between them, those members make and sell a little over three billion bottles of wine, which is about 10% of all the wine made in the world.
We're really quite pleased because it's a, a very material impact in terms of not just the carbon footprint of wine, but also saving of money for our members.
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