Search Climate Insights Directory
1,277 results
Closing the loop on builders’ rubble through concrete innovation
Concor Infrastructure recycled 77,000 m3 of concrete waste during the expansion of the City Deep container terminal, exceeding a 24% landfill diversion target by recovering all waste. The project utilised High volume pulverized flue ash concrete (HVPFAC) and geopolymer concrete, resulting in R10.8 million in virgin material cost savings and R23 million in avoided landfill gate fees.
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Document type: Case study
Estimating Employment Effects of the Circular Economy
The document examines the transition from a linear to a circular economy, highlighting its potential to create jobs and increase GDP. It synthesizes projections from various international bodies, noting that while Europe has extensive data suggesting net job gains in recycling and services, Canada's 'environmental and clean technology' sector employs approximately 274,000 people as of 2016, though its growth lags behind the broader economy.
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Document type: Briefing
Waste Management Flagship Programme
The Waste Management Flagship Programme seeks USD 1,359,719 in preparatory funds to transition South African municipalities from landfill-based disposal to a circular economy. The programme focuses on five organic waste treatment technologies: open windrow composting, in-vessel composting, decentralized containerized composting, anaerobic digestion (AD), and biomass pre-treatment. The PPF phase will conduct full feasibility studies and Environmental and Social Impact Assessments (ESIAs) for six pilot municipalities—Rustenburg, Emfuleni, uMhlathuze, Msunduzi, Mbombela, and Mangaung—while developing standardized blueprints, procurement documents, and a due diligence framework to scale the model to 24 additional municipalities. The overall programme aims to reduce methane emissions by 572,800 t CO2 eq per annum and create 938 jobs during construction and operation.
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Document type: Report
10 affordable ways to become a green business
The guide outlines low-cost strategies for businesses to become 'green', focusing on energy efficiency, waste reduction, and sustainable procurement. Key recommendations include switching to LED lighting, installing low-flow water fittings, reducing paper waste through digital receipts, and incentivising reusable coffee cups. It also suggests dietary shifts toward locally-sourced vegetarian options, eliminating standby power consumption, implementing bike-to-work schemes, composting food waste, and purchasing second-hand furniture. Additionally, it advises employers to select ethical, green investment funds for employee pensions.
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Document type: Guide
The Carbon-Free Regions Handbook: Industry
The document outlines five specific actions to decarbonize regional industry: methane containment, transitioning to clean industrial processes, implementing shared industrial flows (such as eco-industrial parks), decarbonizing ports and airports, and transitioning to clean industrial vehicles. It provides a framework for regional authorities to eliminate waste, electrify processes, and implement regulatory penalties for emissions, supported by references to policies from jurisdictions such as California, Brazil, and Hong Kong.
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Document type: Guide
Closing the loop: Using building rubble in construction
The project achieved a 90% reuse rate of demolition waste by carefully deconstructing existing buildings on a 15 ha site. By reusing 4,500 m3 of concrete onsite for fences, casting beds, and pipes, the project saved R649,000 in material and transport costs. Other recovered materials included 3,500 m3 of brickwork for a local school, 2,600 m3 of asphalt, and 6,800 m3 of laterite. The approach avoided greenhouse gas emissions linked to virgin material extraction and processing, with only PVC piping, roof insulation, and sheeting sent to landfill.
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Document type: Case study
Low-Carbon Manufacturing
The document outlines the economic necessity for South Africa to transition toward low-carbon manufacturing, identifying specific opportunities in renewable energy, transport, agriprocessing, water, and the circular economy. It emphasizes the need for policy clarity, local procurement, and a 'just transition' that protects workers and informal waste pickers.
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Document type: Policy brief
Risk unwrapped: plastic pollution as a material business risk
The document identifies plastic pollution as a material business risk, categorising it into transition, reputational, physical, and liability risks. It details how regulatory shifts, technological disruptions, and public perception threaten the long-term viability of plastic-intensive companies. Furthermore, it asserts that under UK law, directors have codified duties to manage these risks to promote company success and exercise reasonable care, warning that failure to do so could lead to personal liability.
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Document type: Briefing
Repurposing builders’ rubble & other secondary materials
Iselula Crushing processes between 5,700 and 22,000 m3 of builders' rubble monthly to produce construction aggregates, diverting an equivalent volume from landfills and saving suppliers between R980,000 and R3.8 million in landfill costs per month. The facility recovers concrete, bricks, mortar, metal, tyres, timber, and PVC pipes, supporting 32 formal employees and 14 informal business opportunities for the local community.
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Document type: Case study
List of Emerging Eco-technologies
The BONUS RETURN project launched the Nutrients and Carbon Reuse Challenge in December 2017 to identify eco-technologies capable of transforming nutrients and carbon into benefits. Out of 13 applications, three winners—Biophree, TerraNovaUltra, and Ravita—were selected based on criteria including relevance, sustainability, and market potential. These technologies focus on recovering phosphorus and carbon from wastewater and agricultural sectors to support the Baltic Sea Region's environmental goals.
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Document type: Report
Historical Review Report
The report examines the transition from linear to circular resource use in wastewater management, focusing on the socio-cultural barriers to recycling sewage sludge as fertilizer. It analyzes historical practices in the EU and provides detailed case studies from three river basins in Sweden, Poland, and Finland, highlighting how perceptions of risk and regulatory gaps hinder the adoption of eco-technologies.
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Document type: Report
FINAL REPORT: CE & BIOVALSA TRADE MISSION TO CAPE TOWN 22-25 MAY 2018
The trade mission, held from May 22-25, 2018, focused on sharing Dutch expertise in waste management and circular economy practices with South African government and private sector entities. Activities included site visits to waste management and composting facilities, sector workshops on secondary materials and bio-based economies, and the development of business cases for insect-derived animal feed and invasive species valorisation. The mission identified specific needs in South Africa for crushing standards in construction and demolition waste and the implementation of quality control systems for secondary materials.
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Document type: Report
Suez tackles emissions through waste and water action
Suez has committed to reducing absolute Scope 1 and 2 greenhouse gas emissions by 30% by 2030 from a 2014 baseline, a target approved by the Science Based Target initiative. The company focuses on transitioning customers to a "use-and-recover approach" through circular economy practices, such as diverting waste from landfills to reduce methane and converting wastewater treatment plants into carbon-neutral "bio-factories." To manage financial risk and guide technology choices, Suez employs an internal carbon price based on the EU ETS and IEA scenarios. By 2017, the company reported a 5.69% reduction in Scope 1 and 2 emissions since 2014 and supported nearly 200,000 jobs worldwide through its activities and supply chain.
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Document type: Case study
Filling gaps in the policy package to decarbonise production and use of materials
The report identifies that the production of basic materials accounted for approximately 25% of global CO2 emissions in 2014, yet progress in decarbonisation has been modest due to carbon leakage concerns and limited political support for resource efficiency. It proposes a portfolio of seven mitigation options, ranging from sharing and reuse to low-carbon production processes. To unlock these, the authors identify three primary policy gaps: incomplete incentives for recycling, a lack of markets for climate-friendly options, and missing signals for phasing out carbon-intensive production. Recommended solutions include project-based carbon contracts for difference (CfDs), Green Public Procurement (GPP), and the introduction of consumption charges on carbon-intensive materials to reinstate carbon price signals muted by free allowance allocations in the EU ETS.
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Document type: Report
Repurposing berm and building rubble for use in construction projects
The document details how Iselula Crushing processed rubble from a historical berm in Hermanus to be used as fill and aggregate for schools, roads, sidewalks, and a mall. The project recovered 19,600 tonnes of material, resulting in material cost savings of R2.4 million and landfill cost savings of R2.1 million, while converting four temporary jobs into permanent positions due to increased demand for secondary construction materials.
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Document type: Case study
LOOKING BACK TO THE FUTURE: MINING FOR DEVELOPMENT IN AFRICA
The document examines the intersection of mining, governance, and the Fourth Industrial Revolution in Africa. It argues that while the global energy transition will double demand for minerals like copper, lithium, and cobalt, African countries must strengthen institutions to ensure these resources drive broad-based industrialisation rather than remaining as disconnected enclaves. The author analyzes specific governance failures and opportunities in South Africa, Guinea, Botswana, and Tanzania, emphasizing the need for stable legal frameworks, the protection of ecological integrity, and the formalisation of artisanal mining. It concludes that leapfrogging traditional development trajectories via renewable energy and smart technology is possible if governments prioritize inclusive institutions over the interests of politically connected elites.
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Document type: Research paper
OCEANS OF PLASTICS: DEVELOPING EFFECTIVE AFRICAN POLICY RESPONSES
The document examines the crisis of marine plastic pollution, noting that while Asia is currently the most polluted continent, Africa is on track to take this title due to rapid population growth, industrialisation, and a lack of waste management capacity. It details the environmental impacts of plastic, including entanglement and ingestion by 344 and 331 marine species respectively, and the economic losses associated with tourism and material waste. The brief surveys a wide array of international treaties—such as UNCLOS, MARPOL, and the Basel Convention—and regional frameworks like the RSCAPs, arguing that policies must shift from focusing on ocean-based waste to targeting land-based sources. It highlights South Africa's legislative framework as an example of established policy that still lacks ground-level implementation, and promotes the African Marine Waste Network (AMWN) as a holistic model for research, economic incentives, and capacity building.
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Document type: Policy brief
IISD Speech: President and CEO Scott Vaughan at Winnipeg Chamber of Commerce Fun, Profit and Saving the Earth event
In a speech to the Winnipeg Chamber of Commerce, IISD President and CEO Scott Vaughan discusses the intersection of trade, sustainability, innovation, and climate change. He warns that protectionism and the potential end of NAFTA would increase costs and emissions, while highlighting the growth of the global green goods and services market. Vaughan emphasizes the importance of the Sustainable Development Goals (SDGs) and the 'Winnipeg PEG' model for community-based sustainability reporting, which IISD aims to replicate globally. He also notes the rise of climate-related financial risk disclosure and the necessity of integrating environmental and economic goals to ensure long-term competitiveness.
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Document type: Statement
The EU can increase its climate targets to be in line with a global 1.5degC
The study concludes that the EU could achieve greenhouse gas reductions of -55% to -62% below 1990 levels by 2030 by scaling best practice policies from member states like Denmark and Germany. Key levers include a faster coal exit, increased electrical energy efficiency, deeper building renovations, and higher emissions standards for transport. Implementing these measures could reduce energy demand by nearly 45% below 2007 levels and increase renewable energy's share of total final energy demand to 45%, suggesting that political will, rather than technical capacity, is the primary barrier to more ambitious targets.
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Document type: Report
Towards a Green and Inclusive India
The text advocates for a transition to a green and inclusive economy in India, moving beyond niche discourse to a fundamental industrial model. It highlights the importance of decoupling economic growth from resource use and calls for greater engagement from the Indian government and civil society to achieve sustainable development goals.
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Document type: Statement