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915 results
Technical factsheet for energy efficiency in primary and tertiary treatment technologies
The document outlines specific power consumption (SPC) benchmarks for primary and tertiary wastewater treatment technologies in South Africa. It identifies that while these stages are not energy intensive, efficiency can be improved through peak demand management, equipment idling, and UV disinfection upgrades, with potential energy savings of up to 50% for UV systems.
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Document type: Fact sheet
Technical factsheet for solar photovoltaic (PV) technology
The document outlines how solar PV technology can be integrated into South African municipal wastewater treatment works (WWTWs) to lower energy bills and greenhouse gas emissions. It details various installation configurations, such as ground-mounted, floating, and rooftop systems, and provides financial metrics including a payback period of 4 to 8 years. The factsheet also lists potential financing mechanisms and a step-by-step implementation process for municipal officials and private developers.
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Document type: Fact sheet
Solar PV for businesses in the Western Cape
The document provides a guide for Western Cape businesses on adopting solar PV to reduce energy costs and carbon footprints. It details various financing models—including outright purchase, debt finance, and Power Purchase Agreements (PPAs)—and provides pricing benchmarks for 2025/26. The brief highlights the role of municipal feed-in tariffs and national tax incentives, while warning of risks related to changing utility tariff structures and policy shifts.
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Document type: Briefing
Using solar PV to achieve decarbonisation goals without upfront capital
Mediclinic implemented solar PV across 29 hospital sites, using a PPA model for 10 sites, including Durbanville Hospital, to avoid upfront costs. The Durbanville installation, commissioned in November 2021, consists of a 704.6 kW (DC) system that produces approximately 1.17 GWh of green electricity annually, offsetting about 1,076 tons of carbon emissions. The 25-year take-or-pay PPA provided immediate savings, with initial electricity prices approximately 60% lower than municipal rates. The document highlights the benefits of PPAs for operational de-risking and financial hedging against rising grid costs, while recommending clear maintenance responsibilities and sector-specific provider experience for similar projects.
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Document type: Case study
Building energy resilience in Western Cape wastewater treatment works
The Hartenbos wastewater treatment works (WWTW) in the Western Cape has implemented a hybrid microgrid consisting of solar PV and battery energy storage (BESS) to ensure operational continuity during loadshedding. The system, completed in September 2025 with a cost between R100 million and R112 million, allows the facility to island from the grid, reduce diesel reliance, and export surplus power. The project serves as a model for other municipalities to stabilize critical services and lower energy expenditures through embedded renewable energy.
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Document type: Case study
Enabling large-scale renewable energy development in Mpumalanga
Mpumalanga is positioned as a strategic hub for South Africa's renewable energy transition due to its significant grid capacity and proximity to industrial demand. However, developers face substantial hurdles, including a lack of a public mining cadastre and delays in Section 53 land-use applications under the Mineral and Petroleum Resource Development Act. Environmental risks, specifically the lack of precise data on endangered bird flight paths, create uncertainty for wind projects. The document suggests short-term mitigations like the Energy One Stop Shop and Strategic Infrastructure Project registration, while advocating for long-term solutions such as a public mining rights database and comprehensive bird monitoring studies.
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Document type: Briefing
Unlocking the potential of wheeling in the Western Cape
The Western Cape has a potential wheeling market of up to 1,600 MW of new renewable energy, representing an investment opportunity of up to R25.6bn. While wheeling allows customers to purchase power from independent power producers (IPPs) via existing grids, its uptake is hindered by limited municipal capacity and the requirement that municipalities be in good financial standing with Eskom. To address these barriers, Eskom is piloting 'virtual wheeling', expected to launch in early 2025, which allows municipal customers to access energy from Eskom-connected IPPs without waiting for municipal readiness. Current wheeling in the province is limited to a few local municipalities, including the City of Cape Town, George, and Swartland. The document highlights that wheeling can provide significant cost savings and price stability for businesses through bilateral power purchase agreements (PPAs), though long-term financial models should account for potential future decreases in daytime energy tariffs.
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Document type: Briefing
Cape Town’s Green Sectors
The document presents a data-driven overview of Cape Town's green sectors, highlighting a total of 600 assessed companies. It breaks down the energy, water, and waste industries by company size and function, while detailing municipal budget figures and investments in green infrastructure, including the Atlantis Special Economic Zone for Green Technologies.
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Document type: Fact sheet
Resilient Urbanism: The intersection of shared data and inclusive public engagement
The document proposes a 'data and domain' approach to resilient urbanism, where measurable shared data and asset-based community participation intersect to drive inclusive public engagement. It details a methodology for community-led enumeration—collecting socio-economic and demographic data—and using that data to ground participatory co-design workshops. A case study of GreenCape's Alternative Service Delivery Unit (ASDU) in the Freedom Farm and Malawi Camp informal settlements in Cape Town demonstrates this process, resulting in the selection of a solar PV micro-utility solution tailored to the community's specific needs, affordability (maximum R150 monthly payment), and desire for portability.
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Document type: Policy brief
Green economy industrialisation: Combating systemic loadshedding
UV Tooling CC, a parts manufacturer in Cape Town, installed a 150 kWp solar PV system and 290 kWh Li-ion battery storage to combat systemic loadshedding. The system provides 2.5 hours of protection per loadshedding event and utilizes peak shaving to reduce costs. This investment has resulted in a 47% reduction in monthly electricity bills and avoids over R1.2 million in annual diesel costs, with an expected payback period of 7.5 years.
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Document type: Case study
Electric-vehicles-as-a-service A viable fleet transition model in South Africa
The document argues that EVaaS—a bundled subscription model covering vehicles, charging infrastructure, and maintenance—can make electric vehicle (EV) adoption more attractive for South African fleet managers by removing high upfront capital costs. Using a theoretical case of 50 panel vans, it demonstrates that EVaaS is financially viable compared to internal combustion engine (ICE) vehicles if monthly subscriptions are priced at or below R16,000 per vehicle. It highlights a real-world application by Everlectric with Woolworths and DSV, noting significant operational cost reductions and CO2 savings, while identifying a lack of accurate residual value data from banks as a primary financial hurdle for EVaaS providers.
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Document type: Briefing
Workshop Report Solar Panel Waste Workshop at the Century City Conference Centre – 5 th March 2019
The workshop addressed the emerging waste stream of solar photovoltaic (PV) panels in South Africa, noting that while most current waste stems from damage, obsolete panels will increase significantly within five years. Participants discussed the legal ban on solar panels in landfills starting August 2021, the need for Extended Producer Responsibility (EPR) schemes, and the trade-offs between centralized recycling facilities and local dismantling hubs. The report highlights the importance of the waste management hierarchy—preventing, reusing, and repairing—and suggests that while full local recycling may not be feasible in the short term, local pre-processing and the export of PV cells are viable options.
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Document type: Report
Solar photovoltaic (PV) systems on packhouses: the business case for an apple packhouse
The report argues that solar PV is highly suitable for packhouses because their peak energy demands for cooling and packing align with daytime solar generation. Through modelling an apple packhouse, the report finds that large-scale systems (500 kWp) are consistently profitable across various tariff and financing scenarios, while smaller systems (≤10 kWp) require favourable financing to be viable. It emphasizes that the primary value is derived from replacing expensive grid electricity rather than selling excess power back to the grid, which offers lower returns. The report also identifies regulatory hurdles, noting that feed-in tariffs are only available in specific Western Cape municipalities.
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Document type: Report
Renewable energy and energy efficiency technologies for wastewater treatment works in South Africa
The document identifies the secondary treatment stage as the highest energy consumer in wastewater treatment works, particularly in systems using activated sludge where aeration can account for 50% of process energy. It recommends benchmarking specific power consumption (SPC) and implementing interventions such as fine bubble aeration, dissolved oxygen control, and cascade aeration to reduce costs and greenhouse gas emissions. Financing options for these projects include municipal budgets, grants, concessional loans, and energy performance contracts.
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Document type: Fact sheet
Solving climate and development challenges in the developing world through cleantech clusters
The white paper proposes using cleantech clusters—groups of co-located firms and institutions—to overcome the slow adoption of climate solutions in developing countries. It advocates for the creation of independent, non-profit cluster agencies to coordinate ecosystems, attract investment, and create jobs, citing the success of organizations like GreenCape and Clean in South Africa, Denmark, Brazil, and Colombia.
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Document type: Report
Just Energy Transition: GHANA RENEWABLE ENERGY POLICY SCAN
The report examines Ghana's energy, industrial, and gender policies, finding that while there is a strong focus on localisation and renewable energy targets, there is a lack of specific mechanisms to integrate small, medium and micro enterprises (SMMEs) and women into the production networks. It highlights implementation lags in the Renewable Energy Master Plan and the absence of a unified industrial policy, recommending targeted financial support and gender-responsive budgeting to ensure a just transition.
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Document type: Report
Just Energy Transition: Continental Overview of Renewable Energy in Sub-Saharan Africa
The report assesses the current state of electricity generation, transmission, and consumption across Africa, highlighting a 'double burden' of climate and transition risk. It finds that while renewable energy potential is high, investment is heavily skewed toward generation and concentrated in a few countries, with significant data gaps hindering effective policy. The analysis of Global Production Networks (GPNs) reveals a heavy dependence on imported technology, particularly from China, and identifies specific challenges and opportunities for localising solar and wind value chains. Employment data is noted as inconsistent, though solar PV dominates the current renewable energy job landscape.
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Document type: Report
EXPERT PERSPECTIVES Supporting a Just and Climate-Resilient Transition in South Africa
The document argues that a just transition in South Africa must move beyond simple decarbonization to address structural inequalities rooted in the minerals-energy complex (MEC). It proposes a 'transformative resilience' framework based on three pillars: a green decent work agenda, expanded social protection (such as a universal basic income guarantee), and radical land reform. The essays detail specific vulnerabilities, including the marginalization of women in ecosystem-based adaptation, the mental health burdens of climate change on Black communities, and the precariousness of informal waste pickers. Sectoral analyses emphasize the need for inclusive food systems, urban drought resilience in cities like Cape Town, and the integration of renewable energy to support agricultural productivity and rural development.
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Document type: Report
Just Energy Transition: SOUTH AFRICA RENEWABLE ENERGY POLICY SCAN
The report provides a critical scan of South Africa's renewable energy policies, highlighting a tension between the rapid liberalisation of the electricity market to solve the energy crisis and the goal of achieving a 'just transition'. While the country has expanded its solar and wind capacity and introduced frameworks like the South African Renewable Energy Masterplan (SAREM), the authors argue that inconsistent application of local content requirements and a lack of enforceable decent work standards have undermined industrial localisation and equitable employment. The analysis emphasizes that the current shift toward private investment risks creating 'low-carbon poverty' if not coupled with targeted support for SMMEs, women, and vulnerable rural communities facing energy poverty.
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Document type: Report
Achieving a Fossil-Free Recovery
The International Institute for Sustainable Development (IISD) argues that COVID-19 recovery spending provides a critical opportunity to shift public finance away from fossil fuels and toward clean energy. The proposed blueprint includes stopping public funding for fossil fuel production, reforming subsidies and implementing taxes to raise an estimated USD 553 billion annually, and incentivizing private investment in clean electricity. The framework emphasizes a just transition involving dialogue between workers, employers, and governments to ensure no one is left behind during the energy transition.
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Document type: Fact sheet