LED street lighting trial in world’s largest cities shows up to 85% energy savings

LED (light-emitting diodes) street lighting can generate energy savings as high as 85%, an independent, global trial of the technology has found. The program also indicates that citizens of pilot cities prefer LED lighting, citing the social and environmental benefits.

The findings of LightSavers, an independent, two-and-a-half-year global pilot of LED lamps in 15 separate trials across 12 cities including New York, London, Kolkata and Sydney, are presented for the first time in a new report entitled ‘Lighting the Clean Revolution: The Rise of LED Street Lighting and What it Means for Cities’.

The report explores the global market status and potential for LED technology and provides guidelines for policymakers and city light managers who want to scale up and finance large LED retrofits. The report was launched as part of the Clean Revolution campaign at the Rio+20 UN Global Compact Corporate Sustainability Forum. It was produced by The Climate Group in partnership with Philips in support of the campaign’s argument that major energy savings can be achieved virtually overnight at relatively little cost.

The following are key findings from the report:

• Surveys in Kolkata, London, Sydney and Toronto indicated that citizens prefer LED lighting, with 68% to 90% of respondents endorsing city-wide rollout of the technology. Amongst the benefits that were highlighted in these surveys were a greater sense of safety and improved visibility.
• The life span of LED lighting trialled ranges from 50,000 to 100,000 hours, indicating a high return on investment.
• LED lighting was found to be a durable technology with the need for minimal repairs; the failure rate of LED products over 6000 hours is around 1%, compared to around 10% for conventional lighting over a similar time period.
• The LED market is at a tipping point, with white light LEDs (used in outdoor lighting) at the early stage of the technology curve. Market penetration is accelerating as the market is expected to expand by 60% by 2020. A recent ILO report concluded that the green economy could yield up to 60 million jobs; The Climate Group, Philips and partners are calling on governments to catalyse the scale-up of LEDs in cities and invest now in order to capitalise on this and create a significant amount of high-value jobs across the world.
• The LightSaver trial concludes that LEDs are now mature enough for scale-up in most outdoor applications bring the economical and social benefits to the masses.
• The Climate Group and Philips are calling for an international low-carbon lighting standard to be created and implemented ensuring that citizens worldwide have access to energy-efficient outdoor lighting.

Mark Kenber, CEO of The Climate Group, said, “This report clearly highlights that LEDs are ready to be scaled up in towns and cities across the globe. LED technology is energy efficient, scalable and positively impacts on the public; it is the Clean Revolution in action. We are now calling on governments to remove policy obstacles and enable a rapid transition to low-carbon lighting.”

“A full switch to the latest energy-efficient LED lighting solutions provides significant energy savings, a reduction in CO₂ emissions, and will transform urban environments,” said Harry Verhaar, Head of Global Public & Government Affairs at Philips Lighting. “We believe that by driving this lighting market transition, our LED lighting solutions will create livable cities for the benefit of residents and visitors.”

For the residents, the benefits of LEDs are tangible: Gobind Saha, owner of a roadside stall at Rabindra Sarani (India), said, “These white lights have changed the way my little business use to be under the street lights every evening. Earlier anything and everything would look yellow in colour, resulting into a decreased purchasing interest among buyers, but now that a buyer can clearly differentiate between green and blue, my sales figures have gone higher.”

Lighting is responsible for 19% of global electricity use and around 6% of global greenhouse gas emissions. Doubling lighting efficiency globally would have a climate impact equivalent to eliminating half the emissions of all electricity and heat production in the EU. And like many other energy-efficient technologies, efficient lighting will boost global prosperity. In the United States alone, cutting the energy used by lighting by 40% would save US$53 billion in annual energy costs and reduce energy demand equivalent to 198 mid-sized power stations.