As part of a 17-point plan to make Phoenix the greenest city in America, mayor Phil Gordon has announced that the city will be testing LED streetlights on a small segment of its streets.
Having advanced their current streetlight installations as far as they can, this initiative offers a way of lowering energy consumption even further.
Read more about the 17 point plan here.
In Vietnam, authorities are working on a draft law on improving and streamlining energy use. Currently, the country wastes an estimated US$ 1 million worth of energy every day due to inefficient energy usage.
Putting this money towards solutions in the LV grid such as substation monitoring and intelligent streetlight control would be a simple and fast way of installing energy saving solutions that pay for themselves relatively fast.
In Ho Chi Minh City, energy saving measures within streetlight have had a significant impact on the city’s CO2 emissions. In the first half of 2009, Ho Chi Minh City has saved approximately 114.8 million kWh of electricity, according to the Director of the municipal Energy Conservation Center (ECC), Huynh Kim Tuoc.
In 2008, the city replaced 131,000 incandescent bulbs with more energy efficient bulbs, saving 220 million kWh.
The city expects to replace the remaining 200,000 incandescent bulbs by the compact bulbs by next year for the local public lighting.
The free social messaging tool, Twitter, now enables San Francisco residents to reach the government customer service centre. According to San Francisco’s Chief Information Officer, Chris Vein, the city is the first city in the world to use Twitter on such a large scale to communicate with its residents.
Other than contacting the centre through traditional media such as phone or the centre’s website, citizens can now send a request on Twitter via SMS, IM or the Twitter website. Requests include streetlight repair among several others. It is possible for the residents to attach photos or links in their tweets allowing the centre to easier identify the location or problem being reported.
Other organisations are also beginning to use the same technology. Kissimmee Utility Authority now relies on its customers to help identify street lights that are malfunctioning or in need of repair. With more than 15,000 street lights to maintain, the utility benefits from outage reports sent using the micro-blogging service Twitter. The utility asks that the tweet includes light pole number, the nearest address or major cross, a contact phone number and the phrase #kuaalerts.
Founded in 1901, KUA (www.kua.com) is Florida’s sixth largest community-owned utility providing electric and telecommunication services to 62,000 customers in Osceola County, Florida.
Gloucestershire County has set a fine example by the ‘invest to save’ scheme, where the county’s street lights are dimmed or switched off for part of the night. The scheme is held up as an example of how UK councils can reduce their carbon footprint.
The county estimates it will obtain annual savings of about £210,000 and cut CO2 emissions by 28 percent by dimming and switching off its street lights. Many of the high wattage street lights are dimmed between midnight and 5:30 a.m., and in the rural areas and market towns some of the street lights are turned off during the same period.
Gloucestershire County Council is already generating savings, and when the project of converting the rest of the county’s street lights is completed, it will reduce carbon emissions by 400 tonnes - the equivalent of boiling 26 million kettles.
StreetLightNews recently met up with Nønne Holm Carlsen for a brief discussion on pros and cons regarding centralised (control cabinet) and decentralised (pole) streetlight management. Nønne Holm Carlsen is Communications Manager at Amplex A/S, a Danish company that work with utility intelligence.
But where does the company stand when it comes to its streetlight solutions? Do they prefer implementing intelligent communication devices and photo cells in each streetlight pole? This provides exact knowledge about every pole, but is expensive and time-consuming to install. Or does Amplex recommend the control cabinet solution with less precise knowledge but fast and low-cost in terms of installation and maintenance. Read on to find out.
What kind of streetlight solution does Amplex offer its clients?
- We offer both a circuit solution built into the control cabinets, and a pole-based solution. We do recommend the control cabinet solution because of the fast and low-cost installation process and because this solution will most often provide adequate knowledge and control. However, we do realize that individual control over certain geographic areas can be necessary. That is why we offer a combined solution, allowing the client to control individual poles near hospitals, public buildings and other important areas.
How is Amplex different from its competitors?
- We focus on streetlight as part of a Smart Grid solution. We add intelligence to the LV network, and in combination with knowledge generated from feeder pillars and substations, we gain a far more detailed overview of all loads and assets in the grid, including smart meters. We also have the advantage of being market leaders. We control more than 5 million streetlights worldwide. Of these 5 million streetlights, we control 275,000 light points with a circuit, control cabinet solution in one project in the Middle East.
What if the customer wants more exact knowledge about the individual streetlights?
- Then we will recommend our pole-based solution. But with our less expensive, basic solution, we do register the number of burn-hours, allowing precisely scheduled maintenance efforts. And if a certain percentage of streetlights within one segment are mal-functioning, we do get an alarm that tells us about the problem, Nønne Holm Carlsen concludes.
‘If the ten largest cities in the United States converted to the Amplex street light management system it would correspond to removing 212,000 cars from the roads - in pure CO2 savings.’ This promising perspective is offered by Danish company Amplex which specialises in energy-saving systems to manage street lighting. The company is an example of the many already registered companies participating in the climate-related parallel events that will take place during the COP 15 Conference.
The world is now gearing up for the coming COP 15 Conference in the Bella Center in Copenhagen where the overall goal is to enter into an international post-Kyoto climate agreement, which involves as many countries as possible. The COP 15 Conference is the fifteenth Conference of the Parties under the United Nations’ Climate Change Convention.
For two weeks, from December 7-18 2009, about 12,000 decision makers, NGO’s and journalists from more than 200 different countries will meet to discuss the future course of the planet. If President Barack Obama is going to participate in the conference, the organisers are expecting an even more impressive turnout, thus counting about 18,000 visitors.
Even though the actual conference is closed to the general public, a lot of climate-related parallel and side events, which are accessible to everyone, will take place before, during, and after the conference. The premiere business event parallel to COP 15 is the Bright Green Exhibition & Conference which is hosted by the Confederation of Danish Industry (DI) on December 12-13.
The highly profiled exhibition is currently in the process of inviting various environmental advocates. Among these are Governor Arnold Schwarzenegger and U2 lead singer Bono. It will be like visiting a gallery of climate solutions, and the idea is to combine elements from art, architecture, showbiz, and trade fairs.
The council of Powys, Wales wanted to save money and reduce CO2 emissions - therefore, they decided to switch off two thirds of its street lights. However, this move has led to a number of unfortunate incidents involving residents injuring themselves in the dark streets throughout Powys.
Some elderly residents said they had fallen and injured themselves in the dark and hundreds of others complained that they feel like prisoners in their own homes. One resident suffered a black eye, facial bruising and injured her knee when she fell outside her home, after six street lights were turned off in the residential area.
Some areas are left open to vandalism and theft, after three cars were stolen on the actual night of the switch-off in the autumn of 2008.
Regarding traffic safety, the conditions have also worsened. One of the councillors explains that a light was turned off above a pedestrian crossing where children were waiting to cross but drivers couldn’t see them. “I stopped my car so that I could signal and warn other approaching motorists,” John Brautigam comments.
The news are alarming, and one wonders if the council of Powys has been considering dimming solutions as an alternative to switching off two thirds of the street lights. Dimming can generate savings of about 25 percent, which is already documented previously on this blog.
The Danish financial newspaper Borsen writes that the Danish energy optimization specialist Amplex has developed a street light system that can generate energy savings of up to 30 %.
With large cities in mind, such savings can lead to interesting results on both the financial and green accounts. Amplex has already carried out a great deal of projects in Scandinavia, the Middle East and in Asia. At the moment, the company is negotiating to supply an energy saving system to Beijing, a city of 18 million inhabitants.
Amplex has already carried out a pilot project of its street light control and management system on an urban freeway to Beijing, and has achieved energy savings of about 30 %. According to the company, the savings could be even bigger, if the solution is rolled out in the rest of the city.
The street light system works by automatically varying the lighting intensity to suit actual needs in residential and industrial areas as conditions change from sunrise to sunset.
Amplex’ International Project Manager, Jacob Richard Nielsen, explains to Borsen: “Our system can be installed in the course of six to nine months in a metropolis, and even within that time the savings are normally sizeable enough to pay for the system.”
City officials hope to secure significant long-term savings and public safety with the deployment of new energy-efficient street lights. First step is the installation of 50 LED (light-emitting diode) street lights in San Francisco’s Tenderloin neighbourhood. Compared to traditional high-pressure sodium light bulbs, LED street lights are about 50 percent more energy-efficient, meaning that they last about two to three times longer and produce a whiter, brighter light which benefits the public safety.
Other than implementing LED lights, the city of San Francisco also demonstrated new smart street light control technologies at a local media event. Smart control technologies can contribute another 20 percent of energy efficiency improvement in addition to the LED lights, the article states.
The new technology can help reduce maintenance costs by allowing the operators to monitor individual street light perfomance, adjust the light intensity level and receive immediate information when lights have failed or are about to fail.
The street lights of San Francisco are owned by Pacific Gas & Electric Company and San Francisco Public Utilities Commission, respectively. Both organisations are now working together on testing and evaluating different smart control technologies to better the energy efficiency in San Francisco.
Companies also offering smart control technologies are Power-One, Amplex and Streetlight Intelligence to mention a few.
Throughout the UK, recently there has been a great deal of examples of city councils deciding to turn street lights off in order to cut bills and reduce carbon emissions. However, this move is often criticised by many residents as the safety of people and their property is reduced.
In the light of these moves, it is liberating to read about cities that are proactive in terms of generating energy savings by applying the technology at hand offered by a number of companies - some of them previously listed on this site.
In Argus, South Wales, three villages have been chosen to pilot a street lighting scheme, which is remotely controlled by the local authority from County Hall in Cwmbran. The scheme uses mobile phone technology and allows County Hall to turn the lights on and off as well as the lights can be dimmed.
Roger Hoggins, the council’s head of operations, is excited about the pilot: “A street light outside a pub could be programmed to stay on until midnight, or dimmed on a residential estate during the night. It gives us a level of flexibility,” he explains. The pilot is expected to generate savings of about $ 80,000 USD on a yearly basis.
In North East Wales, the lights fitted in two Flintshire roads provide a white light and are designed to minimise upward light pollution. The lights are more expensive than the ones they have replaced but are said to have a relatively quick payback due to the energy savings. Flintshire council wants to hear people’s thoughts on the new lights.
The council’s executive member for environment, Tony Sharps, argues that this new system is far better than switching off street lights thus jeopardising people’s safety. Other trial sites are planned this year.