Rebrurebru

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.

HeadquarteredMakassar
Focus RegionS. Sulawesi
Product Lines4 Active
Primary WasteCoffee SCG
Our Story

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.

Our Mission

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.

Our Vision

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 People Behind Rebru

Our Team

A compact, cross-functional team united by a shared belief that waste is not a problem — it's an underutilized resource.

Founders

Musawwir Muhtar

CEO

Musawwir Muhtar

Founder
Sustainable DevClimate & WasteStartup GrowthBiz Dev

10+ years across climate-focused sectors — waste management, economic empowerment, and agri-tech.

Makassar, ID

Background

Sustainable development professional with 10+ years of experience across climate-focused sectors including waste management, economic empowerment, and agri-tech. Experienced in startups, NGOs, and CSOs, with a proven track record of scaling ventures from inception to securing $5M in investment while leading operations, growth, government relations, grants, and business development.

Areas of Expertise

  • Sustainable Development & Circular Economy
  • Climate & Waste Management Systems
  • Startup Growth & Scaling Strategy
  • Business Development & Gov. Relations
Rinto Alam Nuari

CTO

Rinto Alam Nuari

Co-Founder
OperationsSustainabilityWaste ManagementSystems

Connecting operational execution with sustainable system development.

Makassar, ID

Background

Sustainability-focused professional with experience in waste management operations and circular economy systems. Skilled in coordinating operational workflows, partner engagement, and digital process integration to support scalable and impact-driven sustainability initiatives. Passionate about building practical systems that connect environmental responsibility with efficient operational execution.

Areas of Expertise

  • Waste Management Operations
  • Circular Economy Systems
  • Operational Workflow Coordination
  • Digital Process Integration
Mohammad Dwika Maharditya

Head of Strategic Partnerships

Mohammad Dwika Maharditya

Co-Founder
PartnershipsExpansionCommunicationCollaboration

Building strategic collaborations through partnerships and stakeholder engagement.

Makassar, ID

Background

Founder’s Associate–level professional with experience supporting partnerships, expansion initiatives, and stakeholder engagement in growth-oriented environments. Skilled in market coordination, partner onboarding, and cross-cultural communication, with exposure to leadership discussions and regional field execution. Fluent in English and conversational Mandarin, with a strong interest in building collaborative and impact-driven initiatives across diverse communities.

Areas of Expertise

  • Partnership Development
  • Stakeholder Engagement
  • Market Expansion Coordination
  • Cross-Cultural Communication

Core Team

Zulfadli Ibrahim

Head of Operations

Zulfadli Ibrahim

Coordinating operational systems and execution to support scalable sustainability initiatives.

OperationsSystemsExecutionEngineering
Makassar, ID

About

Engineering professional and academic with experience in operational coordination, technical systems, and project execution across engineering and research environments. Skilled in analytical problem solving, workflow management, and system-oriented approaches to support efficient and scalable sustainability initiatives. Actively contributes to operational development through collaborative execution, process coordination, and practical implementation strategies.

  • Operational Systems Coordination
  • Engineering & Technical Planning
  • Workflow & Process Management
Ainun Rezkiva Arif

Product Development Lead

Ainun Rezkiva Arif

Transforming research insights into sustainable product innovation.

DevelopmentResearchSustainabilityInnovation
Makassar, ID

About

Chemistry researcher with expertise in biomass-based carbon materials, sustainable material development, and circular economy innovation. Experienced in translating research findings into practical development initiatives, with a focus on creating environmentally responsible solutions from underutilized resources. At REBRU, contributes to product development through material research, validation, and innovation while supporting science-based communication to strengthen public understanding of sustainability and circular economy practices.

  • Sustainable Product Development
  • Biomass-Based Carbon Materials
  • Material Research & Validation
Lisa Wulandari

Regenerative Agriculture Lead

Lisa Wulandari

Advancing regenerative agriculture through circular resource innovation and sustainable development.

AgricultureRegenerationSustainabilityCircular Economy
Makassar, ID

About

Chemistry postgraduate with a research background in biomass-based carbon materials, sustainable resource utilization, and circular economy innovation. Passionate about advancing regenerative agriculture through the responsible transformation of organic resources into solutions that support soil health, resource efficiency, and long-term environmental resilience. Combines scientific research, product development, and stakeholder engagement to bridge sustainability innovation with practical agricultural applications.

  • Regenerative Agriculture Systems
  • Biomass Resource Utilization
  • Circular Economy Innovation

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.

01

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.

02

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.

03

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.

Rice HuskCorn HuskCocoa WasteCoconut ShellsBiomass

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.

In R&D

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

Every Cup of Coffee
Becomes a Catalyst for
Climate Resilience

Partner with us to redirect waste from landfills and create measurable environmental impact across Indonesia.

Become a Partner Shop Products