Winnow Solutions is a London-based SaaS and hardware provider that uses AI and scale-house cameras to measure and reduce food waste in commercial kitchens.
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Winnow is a food-waste-reduction SaaS company with genuine product-level impact: 28,000 tonnes of food waste prevented annually across 3,500+ client sites. Its own operational carbon footprint data is stale (last published FY20, 645 tCO₂e) and absent from recent reporting. No updated Scope 1, 2, or 3 emissions disclosed post-2022; hardware supply chain emissions likely grew with deployment scale.
Winnow Solutions scores 63/100 (Leading practice) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified June 2026.
That places Winnow Solutions joint 6th of 847 companies scored, and joint 3rd of 76 in SaaS / Digital Services.
Where Winnow Solutions sits among saas / digital services peers.
Among the 76 major saas / digital services brands we've scored, Winnow Solutions is tied =3rd of 76, with 1 other.
Its three lowest-scoring questions, and what the evidence didn't show.
Only baseline: FY20 645 tCO₂e.
No quantified own-operations figure published post-2022.
No per-category quantified breakdown for 2022 or later published.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Controversies & Red Flags and Nature & Biodiversity Impact (8/10, 7/10). Weakest on Emissions Trajectory and Carbon Footprint — Operations (4/10, 5/10).
The 2 companies in the sector scoring nearest above Winnow Solutions.
Ecosia is structurally sound: a ClimatePartner-audited 102t operational footprint (stable, not yet on an evidenced reduction trajectory), 200% renewable energy ownership, and all profit reinvested into ecosystem restoration via binding steward-ownership.
See the breakdown →Sage has validated SBTi targets and transparent climate governance and FY25 emissions fell 13.4% to 27.8% below 2019, roughly on course for its 50% cut by 2030.
See the breakdown →The formula and all 12 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale12 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
8 of 12 sources are independent of the company.
“Our Scope 1, 2 and 3 total emissions in FY20 were 645 tonnes.”
“At Winnow, we help the world's leading hospitality brands - including Hilton, Marriott, and IKEA - cut food waste in half”
“Based on the B Impact assessment, Winnow earned an overall score of 82.1.”
“we legally committed ourselves to a 'triple bottom line' approach in our articles of association”
“Winnow technology now serves more than 1,400 businesses across the world, saving the equivalent of 36 million meals each year”
“A key focus of transitioning to a circular economy involves moving to a regenerative agricultural system which builds natural capital, improving soils and biodiversity.”
“kitchens using Winnow are preventing the waste of 28,000 tonnes of food per year - equal to two meals saved every second.”
“When we reduce food loss and waste, we can mitigate the pressure on climate, water, and land resources”
“more than 20 million saved meals and 36,000 tonnes of CO2e that have been avoided”
“In 2023 Winnow partnered with UNEP and Hilton as part of the Green Breakfast initiative”
“companies like Leanpath, Winnow, and Kitro, which use real-time data and predictive analytics to monitor, categorize, and reduce food waste”
“As of Apr 30, 2026, the latest employee count at Winnow is 173.”
If you believe a source has been misread or a newer version exists, submit a challenge.
Winnow Solutions is a London-based SaaS and hardware provider that uses AI and scale-house cameras to measure and reduce food waste in commercial kitchens. Founded 2012, serving ~3,500 sites globally across hospitality, healthcare, and institutional foodservice. B Corporation certified.
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