Greyparrot at Sunset Park: counting 91,000 lost cans a day is not the same as saving them
Greyparrot's cameras say 89% of aluminium passing a Brooklyn MRF is recoverable. That is a measurement of loss, not an improvement in recovery — the pilots that would show that have not run yet.

Greyparrot's Analyzer AI has been watching conveyors at Circular Services' Sunset Park MRF in Brooklyn since Q1 2026. The headline: 89% of aluminium passing through is recoverable — about 91,000 cans a day.
How it works
Cameras above the belts identify materials in real time. Software aggregates the detections into commodity quality alerts and production reports for plant managers. No robots, no sorting hardware — just vision and data.
The claims
- 89% of aluminium passing through is recoverable (~91,000 cans/day, ~514 t/yr).
- Camera systems can deliver 10–20% efficiency gains.
- Over 1 trillion detections across deployments; over $2.5 billion in recoverable value identified.
- $27M Series B in July 2026; Circular Services runs 38 MRFs.

Reading the numbers carefully
89% of aluminium passing the MRF is recoverable.
That is what the cameras see going past — potential, not recovered metal. The 91,000 cans are what is being lost today.
- No baseline. There is no before-and-after aluminium recovery rate, so no improvement can be attributed yet.
- 10–20% is marketing. No published methodology or independent validation.
- $2.5 billion is an estimate. Built from Greyparrot's own detections and assumed commodity prices, not realised revenue.
- The test has not happened. Circular Services will run pilots this autumn to see whether alerts change what operators do.

Why the data still matters
Knowing where on the line aluminium escapes is actionable: adjust eddy-current separators, slow a belt, fix burden depth. Passive monitoring is cheap to install. If the pilots show measured recovery gains, rollout across 38 MRFs would be easy to justify.
The real question
Does better information lead to better recovery? Sometimes knowing you are losing money does not mean you can fix it without new equipment. Greyparrot is currently selling measurement. The autumn pilot data will show whether it also sells recovery.
References and image credits›
- 01Waste Dive — Greyparrot, Circular Services pilot AI technology at New York MRF
- 02Alcircle — US aluminium landfill loss can become domestic supply
Photo: US Department of Defense, public domain · Photo: Wikimedia Commons, CC BY-SA 4.0
