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Robot maker · registered

rStream Recycling

Corporate marketrecyclingCurated record
rstreamrecycling.com

UMass Amherst spinout building trailer-scale autonomous waste-sorting robots. A conveyor system uses computer vision and AI to distinguish recyclables from trash in mixed streams and automatically diverts items into the correct lane, targeting smaller-scale operations rather than warehouse-scale MRFs. The system sorts about one ton of waste per hour and doubles as a data-collection (audit) platform for waste characterization. Backed by NSF SBIR Phase I/II funding and the Massachusetts Clean Energy Center AmplifyMass program.

HeadquartersSomerville, US
Founded2022
Corporate funding$995K
TeamNot listed
Deployments2
Open roles0
01

Company overview

Identity and operating footprint

Company typeRobot maker
Market segmentCorporate
StageGrant
FoundersIan Goodine (Co-founder & CEO), Ethan Walko (Co-founder & CTO)
Regions servedUS
Countries deployedNot listed
Service footprintNot listed
Last reviewed2026-07-05
MX

Robot models

Specifications remain vendor-claimed

Machinerecycling

rStream sorting trailer

  • Sorts 1 ton of mixed waste per hour

    Throughput of the mobile trailer-mounted AI sorting line during the March 2025 UMass pilot

    Claim source
DP

Deployment log

Announced and cited only

AnnouncedCustomerSiteCountryCountEvidence
2025-03-31UMass Amherstcampus AI waste/recycling sorting pilotUS1Announcement
2023-11-06UMass Dining ServicesAI waste-audit pilot (AuditPro)US1Announcement
CA

Funding history

Publicly announced rounds

Investors on recordNational Science Foundation (SBIR Phase II)
TL

Company timeline

Milestones and announcements

2025-03-31Week-long pilot of AI sorting trailer at UMass Amherst campusUMass Amherst
2023-11-06AuditPro AI waste-audit pilot with UMass Dining ServicesRecycling Today
SC

Source ledger

4 unique public sources

01
NSF SBIR Phase II Award — rStream Recycling IncNSF SBIR Seed Fund · retrieved 2026-07-05
02
UMass alumni go small with trash-sorting robot pilotResource Recycling · retrieved 2026-07-05
03
Watch: UMass Pilot Tests Alumni-Created Innovative Trash and Recycling Sorting RobotUMass Amherst News · retrieved 2026-07-05
04
rStream pilots AuditPro technology for sorting waste and recyclablesRecycling Today · retrieved 2026-07-05