Makassar · South Sulawesi · Indonesia
Specializing in
Coffee Waste.
Leading in Climate
Solutions.
Rebru transforms spent coffee grounds into biochar, compost, and sustainable materials — supporting circular economy goals across Indonesia. We are one of the first startups in South Sulawesi directly addressing the growing challenge of coffee waste, at scale.
About Rebru
From Residue to Ritual
At Rebru, we specialize in transforming spent coffee grounds into high-value climate products and regenerative materials. Based in Makassar, South Sulawesi, we are one of the first startups in the region directly addressing the rapidly growing challenge of coffee waste.
Our core expertise lies in collecting, processing, and upgrading spent coffee grounds into impactful products — from biochar that locks carbon for centuries, to compost that heals soil, to bio-briquettes that displace fossil fuels.
Indonesia's Leading Coffee-Waste Innovator
To become Indonesia's leading innovator in coffee-waste circularity — while expanding regenerative solutions that utilize organic waste responsibly and at meaningful scale.
A Circular, Low-Carbon Economy
To turn coffee waste and other underutilized organic resources into regenerative materials that restore soil, reduce emissions, and drive a circular, low-carbon economy across the archipelago.
The Core Problem
Why Coffee Waste
Is Our Focus
Three interconnected reasons why spent coffee grounds are the most strategic entry point for circular economy innovation in Indonesia.
High Volume
Coffee consumption in Indonesia is the highest in Southeast Asia, creating consistent and predictable waste volumes year-round — a reliable feedstock for circular production.
Hidden Emissions
Spent coffee grounds are a significantly underestimated methane emitter when left to decompose in landfills. Diverting them is one of the highest-impact, lowest-cost climate interventions available.
High Potential
When processed correctly, spent coffee grounds (SCG) yield premium-quality biochar for soil and clean bio-energy — making them one of the most valuable organic waste streams in Indonesia.
What Else We Process
Complementary Organic Waste
To support composting and biochar production at scale, we integrate other high-volume agricultural organic waste streams alongside coffee grounds.
Our Solutions
Circular Innovations
Biochar
Improves soil health, increases water retention, and locks carbon for centuries.
Compost
Organic fertilizer made from coffee grounds blended with restaurant and food waste.
Bio-briquettes
Cleaner-burning fuel briquettes using spent coffee grounds as the primary ingredient, displacing coal and wood.
Raw Materials
Biodegradable cups, blocks, and sustainable packaging prototypes made from compressed coffee waste.
Who We Serve
Partners in Sustainability
We collaborate with organizations committed to reducing their environmental footprint.
- Gardeners & Agricultural Sectors
- SMEs & Manufacturing Industries
- FMCG Brands & State-owned Enterprises
- Coffee Shops & Café Chains
Our Impact
What We Change
Every kilogram of waste we collect triggers a measurable chain of positive outcomes.
- Diverting coffee waste from landfills
- Reducing methane emissions at source
- Creating circular economic value
- Empowering local mitra communities