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GR-100 · photo pending manufacturer approval
Harvesting · Fully autonomous

GR-100

Four Growers, Inc. · United States

Pittsburgh-built autonomous greenhouse tomato harvester running the first operational robot fleets in Dutch greenhouses — snack, plum and cherry tomatoes picked by suction with stereo vision at up to 43 kg/h and 98% ripe-detection precision. Fits existing commercial greenhouses with minimal modification; used by grower Westburg and at Syngenta's TomatoVision research facility.

Available in: United States · Netherlands

At a glance

Best for

Large glasshouse tomato operations in the Netherlands or US wanting fleet harvesting of snack/cherry tomatoes plus per-row yield heatmaps and forecasting.

Avoid if

You grow beefsteak/truss-cut formats it does not yet pick, or run a small greenhouse where a robot fleet cannot amortise.

Not suitable for

Open-field crops, orchards, berries; greenhouses without standard pipe-rail row layout.

Specifications

Power sourceBattery-electric greenhouse platform (details not disclosed)
Required tractor powerNot required (self-propelled on greenhouse rows)
DimensionsNot disclosed
WeightNot disclosed
Min farm sizeNot disclosed
ProductivityUp to 43 kg/h (12 g fruit) · 98% ripe-detection precision · 24/7 operation · cart holds 24 crates / 246 kg per session
Max speedNot disclosed
SensorsStereo camera array (4–8 stereo cameras reported) for per-plant perception and ripeness detection
ConnectivityRemote fleet dashboard · yield heatmaps to 3 m resolution (beta) · yield forecasting (beta)
Compatible toolsSuction-based harvest end effector on robotic arm (Fanuc) · autonomous crate cart · novel motion planner (~34× faster planning)
Configurations
GR-100Current fleet-deployed generation for snack, plum and cherry tomatoes

Price & ROI

Price (EUR)Not disclosed
Native priceNot disclosed
Price verifiedNot disclosed
Business modelNot disclosed publicly; deployed via direct engagements with growers (fleet operations)
Ongoing costNot disclosed
MaintenanceNot disclosed
Payback modelGR-100 · Four Growers, Inc.
No manufacturer payback figure is published for this machine. The model below uses only your inputs.
Your farm

Farm figures carry across machines; the per-machine rates reset when you open a different listing.

Your result · per year
Labour saved
Inputs saved
Total saved

Payback = machine price ÷ (labour + input savings per year). Every figure above is yours to change. FX is indicative.

Verified outcomes

Each result is a before-to-after figure with a time horizon and a cited source. Independently-verified results are marked separately from vendor-claimed ones.

Harvest labour for snack tomatoesLabourper season · HortiDaily on first Dutch GR-100 fleet
−50% labourVendor-claimedManual picking crews in greenhouse rows → Robot fleet harvesting with up to 50% labour savings reported at grower Westburg (NL)
Ripeness selection accuracyPrecision & accuracyongoing · Four Growers product page
98% ripe-detection precision at up to 43 kg/hVendor-claimedwas: Human judgement, variable between pickers

EU context

CE markingNo CE marking published; US manufacturer operating robots in NL greenhouses
EU Machinery RegulationEU market-placement status not verified despite Dutch fleet operations
AI Act relevanceLimited-risk; onboard vision for ripeness detection
CAP subsidyGreenhouse harvest automation — not directly tied to CAP eco-schemes

Get it

Verified EU dealers
Four Growers, Inc. (direct)Pittsburgh, US · Dutch operations (NFIA-supported entry)
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Evidence

Sources

Specifications cross-checked against manufacturer documentation; listing last verified 2026-07-17.

Demo
Demo video on fileManufacturer-hosted · last checked 2026-07-17
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