How to Implement Renewable Energy and Energy Efficiency Options

The document advocates for the transition from incandescent and mercury vapour lighting to compact fluorescent lamps (CFLs), LEDs, and efficient fluorescent tubes in South African urban areas. It highlights that lighting accounts for approximately 12% of electricity use in the residential and commercial sectors, and replacing traditional bulbs with CFLs can reduce this by up to 75%. Using Cape Town as a model, the guide estimates that achieving penetration targets could save 8 million MWh of electricity and 7.5 million tonnes of CO2 by 2024. It identifies barriers such as high initial costs for low-income households and municipal reluctance to reduce electricity sales, while suggesting implementation strategies through procurement policy changes and Eskom's demand side management (DSM) subsidies. Case studies from Ekurhuleni and international examples from Australia, the USA, and India illustrate the economic and environmental viability of these interventions.

• In South Africa, the residential and commercial sectors consume 21% of the country's electricity, with lighting accounting for about 12% of that usage. Transitioning to compact fluorescent light bulbs (CFLs) and efficient fluorescent tubes can reduce this lighting energy consumption by up to 75%.
• CFLs offer significant lifecycle advantages over incandescent bulbs, including being 80% more efficient and lasting 10 times longer. A single 18W CFL can save 800kWhrs of electricity (approximately R300) and 800kg of CO2 over its 10,000-hour lifespan, assuming a coal-based power source.
• Modeling for Cape Town indicates that meeting energy efficiency targets (100% commercial/local authority and 90% residential penetration by 2020) would result in 8 million MWh of electricity saved and over 7.5 million tonnes of CO2 saved by 2024. This would negate the need for a 123MW power facility.
• A lighting retrofit in the Ekurhuleni Metropolitan Municipality's Germiston Civic Centre and EGSC buildings achieved a 75% energy saving from CFLs and LEDs and a 13% saving from fluorescent lights with electronic ballasts, reducing annual energy use from 387,718 kWh to 109,894 kWh.
• Several barriers hinder the rollout of efficient lighting, including the perception of high initial costs among low-income households, municipal dependence on electricity sales revenue, and procurement policies that favor existing non-efficient suppliers.
• The presence of mercury vapour in CFLs necessitates the implementation of safe disposal programmes to manage them as hazardous waste.
• Financial support for efficient lighting projects is available through Eskom's demand side management (DSM) programme, which may subsidise suitable CFL projects by 50% subject to a feasibility study by an approved energy services company (ESCO).

APA

Stockholm Environment Institute (n.d.). How to Implement Renewable Energy and Energy Efficiency Options. https://cdn.leap.sei.org/documents/SEA5.Energy%20efficient%20lighting%20implementation.pdf

Chicago

Stockholm Environment Institute. How to Implement Renewable Energy and Energy Efficiency Options. n.d. https://cdn.leap.sei.org/documents/SEA5.Energy%20efficient%20lighting%20implementation.pdf.

Wikipedia

{{cite report |author=Stockholm Environment Institute |title=How to Implement Renewable Energy and Energy Efficiency Options |url=https://cdn.leap.sei.org/documents/SEA5.Energy%20efficient%20lighting%20implementation.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{stockholmenvironmentinstitutendhow, author = {{Stockholm Environment Institute}}, title = {{How to Implement Renewable Energy and Energy Efficiency Options}}, institution = {Stockholm Environment Institute}, url = {https://cdn.leap.sei.org/documents/SEA5.Energy%20efficient%20lighting%20implementation.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }