Stadiums, festivals, canteens, hotels, food service. We replace your single-use plastic with bio-compostable products and run the composting on-site. One vendor. One green bin. One closed loop.
A compostable cup is only as good as the facility that processes it, and for most venues that facility is too far away, or does not exist. That gap is where "compostable" usually breaks down in practice. We close it by bringing the compost machine to the venue, dosed with our own PLA-trained microbe cultures so the material actually breaks down on the cycle your operation runs on. The material, the on-site machine, and the off-take are one system, so compostability stops being a label on the cup and becomes something that actually happens on your site.
We start with a working session: which SKUs are in your service, what volumes, what waste streams currently exist, where they currently go, and the regulatory and stakeholder context for your venue. Most operators are surprised by what they're paying for incineration.
We map your SKUs to GRØNBLÅ equivalents, cup sizes, lid types, tray geometries, bag formats, cutlery. You get a sample run for live testing during a real service period before any commitment.
Based on volume and footprint, we design the back-of-house: in-vessel compost machines with active oil-jacket temperature control and our PLA-trained microbe cultures as the active inoculant, closed indoor pre-treatment, hygienisation cycle every five days, and pre-compost off-take by Jysk Muld / RGS Nordic. For smaller venues, we route to shared regional capacity.
We handle the environmental approval (miljøgodkendelse) work with municipality case officers, including the technical documentation around our composting process, the K214 classification, and the SUP Directive context. You don't have to translate your operations into bureaucracy alone.
We don't drop pallets and disappear. Staff training, customer-facing signage, and the single-green-bin rollout are part of the package. Guests don't have to learn anything new, the bin colour does the work.
Monthly reports on tonnage diverted, microplastic prevented, and compost output for ESG and CSRD reporting. Carbon-filter replacements, hygienisation logs, and pickup records, all documented for self-monitoring (egenkontrol).
Increasing EU sustainability reporting requirements are driving demand for traceable, documented waste and material flows across value chains. We deliver the documentation your reporting team needs, measured, not estimated.
Built around the EU Single-Use Plastics Directive logic: prevent single-use, substitute with alternatives that can complete an industrial composting cycle, capture for proper end-of-life. Not a workaround, an answer.
Product, system, operation, off-take. We sign one contract that covers the whole loop. No vendor stack to manage.
What's actually in your venue's options. Compostable cups are easy to source. Closed-loop disposal is the hard half, and it's where most "sustainable" alternatives quietly fall over.
| GRØNBLÅ | Traditional plastic | Other compostable | Reusable systems | |
|---|---|---|---|---|
| Closed-loop system included | Yes, material, compost machine, off-take | N/A | Material only, in most cases | Wash & return logistics |
| On-site composting available | Yes, in-vessel compost machine at the venue | No | No | No |
| Collection & processing handled | Yes, we run the cycle | Via municipal waste | Customer's responsibility | Via wash contractor |
| Independent certifications | EN 13432 · OK Compost INDUSTRIAL · Rambøll LCA | None required | Varies, often material-only | Varies by operator |
| Real end product | Peat-replacement compost | Incineration or landfill | Usually incinerated | Reuse, eventually still waste |
| Auditable per-event waste reduction | Yes, CSRD-compatible methodology | No | Not typically measured | Hard to attribute |
| Scalability to stadium-scale events | Yes, proven at stadium scale | Yes (the status quo) | Material yes, system no | Breaks down at peak throughput |
Honest table: reusables work well in some settings, small venues, repeat catering, university canteens. They don't work well for large open-throughput events, which is where we focus. We've written about why elsewhere on the site.
Two of our in-vessel compost machines at FCK's home stadium. Match-day catering waste handled in a single bin, processed on-site, off-take to Jysk Muld every 5 days.
Sustainability partner for the Tissot UCI Track Cycling Worlds in Ballerup. Single-bin solution piloted for 12,500-spectator events.
Cradle-to-cradle solutions for the bicycle industry. Featured at Start-Up & Innovation Day, Sustainability Track, and the Eurobike Hub.
We'll respond within two business days with a fit assessment, a proposed pilot scope, and a 30-minute call to walk you through the system.
Prefer a direct route? Email info@gronbla.com or use the contact form.