01
Biogas market development · Completed
Organic waste
Sorting at source is the first act of a circular system.
Material · value chain
Sustainability meets circularity.
Organic material has value when the system is designed around where it is generated — and where it can go next.
- Established
- 2017
- Global commitment
- UN Global Compact participant
- External validation
- Nedbank ReNEW Programme · 2026
Selected relationships
Partners, clients and collaborators.
Madam Waste works across community, industry, technical and development networks to move circular-economy ideas into practice.
Credentials & affiliations
Part of the networks shaping circular economy, methane reduction and sustainable events.
Madam Waste participates in recognised global, regional and sector bodies spanning responsible business, biogas, methane reduction, circular economy and event sustainability.
UNGC
Company participationUN Global Compact
Active participant · Active since April 2024
GMI
Company networkGlobal Methane Initiative
SABIAProject Network member · Agriculture, municipal solid waste & biogas
Industry bodySouthern African Biogas Industry Association
CSACorporate member · Southern African biogas industry network
Circular economy ecosystemCircular South Africa
EGFListed partner · Circular-economy ecosystem partner
Events sustainabilityEvent Greening Forum
Member · Events sustainability network · 2026
Expertise
From the first material question to an implementable circular system.
Madam Waste’s work sits between planning, infrastructure, operations and behaviour. That matters because waste systems rarely fail for one reason alone.
View the full practice
Lead discipline
Circular strategy & advisory
Translate circular-economy ambition into a practical programme built around material flows, place, policy, stakeholders and implementation.
- Urban energy planning
- Organic waste value-chain optimisation
- Feasibility & viability studies
Practice area
Waste valorisation & green events
Design separation, collection and recovery systems that keep useful materials in circulation and create auditable post-event evidence.
Practice areaUrban biogas systems
Plan decentralised anaerobic-digestion systems for institutions, precincts, farms, campuses and other sites where organics are generated.
Also within the practice
Demonstration in practiceArrange a site visit
A working environment for decision-makers, learners and project teams.
The demonstration site makes waste valorisation tangible. Visitors can examine organic-waste processing, small-scale biogas and practical circularity in one place before discussing how those principles translate to their own context.
500 kgPublicly reported maximum capacity of the 24-hour organic-waste composter.
BiogasSmall-scale digestion demonstrates energy recovery close to the point of generation.
Site visitsFor institutions, schools, practitioners, researchers and project teams.
Selected work
Project archive Projects across biogas, waste diversion, circular economy and capability building.
02
Project development · Completed
Compendium / Deal Book of Biogas Demonstration Projects in Southern Africa
03
Waste diversion assessment · In progress
Garden Waste Diversion — City of Tshwane
From the field
Current work, public conversations and sector activity.
Project activity, sector collaboration and circular-economy commentary, published directly by Madam Waste.
Follow Madam WasteMore from the field
Operating contexts
Different operating contexts. One systems view.
Engagements can start with strategy, material data, a site assessment, a pilot, an event or a capability gap.
Where the work applies
Cities & municipalities
Waste diversion assessments, urban energy planning, stakeholder programmes and circular-economy pathways.
Property & precincts
Decentralised organics recovery and biogas concepts designed into places where waste is generated.
Hospitality & events
Separation-at-source systems, green-event operations and evidence-led diversion reporting.
Schools & campuses
Learning programmes, live demonstrations and practical waste-to-value systems for institutions.
Food & agriculture
Feedstock characterisation, composting, biogas and material-recovery opportunities across organic streams.
Project governance
Evidence and reporting structured for larger assignments.
Corporate, public-sector and event work creates a trail of material records, technical decisions, milestones and close-out outputs. Madam Waste can structure that evidence around the needs of the client team so progress remains visible and decisions remain traceable.
Project governance
Evidence should be useful while the work is happening, not only at close-out.
For larger engagements, the reporting structure can be organised around the records, review points and outputs that matter to the client team. The result is a clearer line from baseline evidence to technical decision and final handover.
Material records
Structure waste-stream baselines, collection records, destination evidence and supporting site documentation so project decisions remain traceable.
Governance & milestones
Keep responsibilities, review points and decision gates visible across client, technical and delivery teams throughout the assignment.
Reporting & close-out
Organise progress notes, technical outputs and close-out evidence into a clear reporting trail for authorised stakeholders.
Opportunity diagnostic
Start with the material stream you already know.
Select an operating context and an approximate daily organic-material volume. The result outlines a sensible first scope for discussion without pretending to be an engineering or emissions calculation.
Preliminary scoping only. Feasibility depends on verified site and feedstock data.
Initial project scopeOrganic material
Material to investigate annually91.0 t
Recommended first scope
- Separation-at-source plan
- Organic waste diversion
- Post-event evidence and reporting
Leadership
Founder · Urban planning · Circular economy
Urban planning, energy and circular-economy expertise in one practice.
Dr Gamuchirai Mutezo’s public profiles describe more than 14 years of work spanning entrepreneurship, renewable energy, applied research and development, with a focus on decentralised energy access in African cities.
DPhilUrban Biogas & Circular Economy
University of the Witwatersrand
University of the Witwatersrand
MPhilEnergy Poverty & Development
University of Cape Town
University of Cape Town
BTRPTown & Regional Planning
University of Pretoria
University of Pretoria
Selected leadership & professional appointments
ACBAAfrican Circular Business AllianceDr Mutezo — Director of Circular Business ModelsACENAfrican Circular Economy NetworkDr Mutezo — member, South AfricaSAPISouth African Planning InstituteDr Mutezo — Deputy ChairpersonGENGlobal Entrepreneurship NetworkDr Mutezo — member · GEC Indianapolis 2025 delegate
Industry presence
Active in the wider waste, organics and circular-economy ecosystem.
ORASA · Organics Recycling Association of South Africa
Event Greening Forum
Consumer Goods Council of South Africa / SA Food Loss & Waste Initiative
Bio360 Africa
WasteCon / IWMSA technical tours
University of Johannesburg environmental research ecosystem
Research & public voice
Technical work supported by research, speaking and sector participation.
Research, conference participation and published commentary extend the practice beyond individual assignments and keep the work connected to wider policy, technology and market conversations.
Start a conversation
Bring the site, material stream or decision you need to make.
You do not need a finished brief. Madam Waste can help define the right first question, establish the evidence needed and determine whether strategy, feasibility, demonstration or implementation is the appropriate next step.
Discuss a project