South African infrastructure investor IIIM has acquired a minority shareholding in organic waste processing firm Cape Town Biogas (CTB) through its Mid Market Infrastructure Fund 1.
The stake was purchased from existing shareholder Metier Sustainable Capital Fund II, which remains the controlling investor in the business.
CTB operates an anaerobic digestion facility processing 250 tonnes of organic waste per day, producing compressed biomethane, renewable beverage-grade CO2 and agricultural inputs. The plant provides a compliant organic waste disposal solution at scale for South Africa's commercial, industrial and agricultural sectors.
The deal marks the fund's second investment in the biogas sector.
'This transaction reflects our strategy of investing in local mid market infrastructure investments that deliver both financial returns and measurable social and economic impact,' said Mark van Wyk, chief executive of IIIM. 'By diverting organic waste from landfills, we extend the lifespan of existing landfill sites, reserving capacity for materials with no alternative disposal route. The project strengthens energy resilience while creating meaningful employment opportunities across the value chain.'
Robert Nel, director and principal at Metier, added: 'The IIIM team brings deep local and sectoral expertise to CTB, and we look forward to building the Cape Peninsula's preferred organic waste beneficiation facility together.'
Metier has led the redevelopment and turnaround of CTB, and the firms said the partnership will enhance capacity at the site and support South Africa's transition to a circular economy.
IIIM takes minority stake in Cape Town Biogas
