Improving Energy Efficiency of Street Lighting

Improving the energy efficiency of street lighting is perhaps one of the easiest ways for a city to reduce costs for energy consumption and tackle climate change. Many cities in the Asia-Pacific region have exploited this great potential and successfully retrofitted their street lighting with efficient technologies.

By replacing old inefficient lamps with new lighting technologies (retrofitting), cities such as Akola, India managed to reduce the electricity consumption of street lighting by over 55 % (2,100 MWh per year) and save annually over USD 130,000 in electricity bills. With a project payback period of less than a year, Akola financed the retrofit through an energy saving performance contracting model. The contractor, an energy service company, used cost savings from reduced energy consumption to compensate the investment. Financing mechanisms such as energy performance contracting, utilize private expertise and investment, allowing cities to achieve energy savings without upfront capital expenses and the use of limited budgetary resources. Akola’s successful approach in improving the energy efficiency of its street lighting has led – with support of the World Bank – to several other similar projects in India (Read more).

Many other cities in Asia are improving the energy efficiency of street lighting. Seoul, Korea aims to replace all public lights (streetlights, security lights, traffic lights and lights in public buildings) and 65% of private lighting with highly energy efficient light-emitting diodes (LED) by 2018. Two other CityNet members – Surabaya, Indonesia and Da Nang, Vietnam – have identified and prioritized street lighting as energy sector with great potential of saving energy, costs and reducing greenhouse gas (GHG) emissions. Both cities were pilots in the World Bank’s Sustainable Urban Energy and Emissions Planning (SUEEP) program. With the support of the World Bank’s SUEEP and Energy Sector Management Assistance Program (ESMAP) Surabaya and Da Nang are developing solutions to improve their energy infrastructure and combat climate change.

Street Lighting in Seoul, Courtesy of Trey Ratcliff https://www.flickr.com/photos/stuckincustoms/300928932)

Street Lighting in Seoul, Courtesy of Trey Ratcliff (https://www.flickr.com/photos/stuckincustoms/300928932)

Despite various excellent practice examples, in many cities the great saving potential of improving street lighting remains untapped. Many cities in the Asia-Pacific region could save over 50 % of their energy consumption and costs if they choose to replace old lamps with LEDs. However, some cities are still wasting more than 10 % of their overall budgets for inefficient public lighting – even though they have to carefully and sustainably spend their limited resources for various other public services.

Street lighting retrofit projects are the ‘low hanging fruit’ of climate change mitigation projects. They are one of the most cost-effective ways in reduction of electricity consumption and GHG-emissions, very feasible, attract private investment, enable cities to save money and can be easily replicated.

By Felix Kalkowsky

With a background in urban planning Felix had worked as a climate change mitigation manager for a local government in Germany before he joined CityNet.