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Content tagged with "smart-grid"Displaying 71 - 80 of 89
Last winter, we reported on Tullahoma, Tennessee's plans to use their fiber optic network for an Automatic Metering Information system (AMI). At the time, city leaders had just started a series of informational meetings for customers. Tullahoma Utilities Board (TUB) technicians are now in the process of installing the new meters in the full service area and expect to complete the project by April, 2013.
Brian Justice of the Tullahoma News, reported:
Brian Skelton, TUB general manager, said Wednesday the results have proven to be very effective, and now the utility is spreading out to install 10,500 electric meters and 9,500 water meters that electronically read and provide TUB with the usage information.
In addition to reading electric and water meters automatically, the system will be used for a number of other tasks to reduce peak electric demand and take advantage of TVA’s new wholesale rate plan.
As we reported earlier, utility managers decided to pursue the new system when the Tennessee Valley Authority (TVA) announced it would change to a "time of use" pricing structure. Because rates will be higher at peak times, the TUB want to give customers the chance to manage their utility costs.
Brian Coate, manager of the electric and fiber departments, told Justice:
“Automated metering will not only reduce personnel costs, but also provide better information on leak detection, outage management, and theft of service,” he said. “The system will also have a server and data portal where customers can examine their time of use habits and have more control over their bill.”
The new meters contain a radio transmitter that sends usage data to a collector secured on a utility pole. The information is then transferred to the TUB via the fiber optic network.
Electric usage will be monitored hourly while water usage info will be available on a daily basis. Customers will also be able to determine if there are any water leaks based on the results. Residents will be able to monitor their usage via a computer or smart phone.
We have followed events in Opelika's network project for almost two years. In addition to creating a smart-grid for its municipal electric utility, the City plans to offer triple-play services. We previously covered Charter Cable's astroturf campaign to oppose the network and how the campaign failed when Opelikans passed the referendum.
This week, the 27,000 residents of Opelika saw their efforts begin to materialize at a ground breaking ceremony at the site of the new Opelika Power Services Facility. Chris Anthony, of the Opelika-Auburn News covered the story:
Site work is well under way on the $3.7 million facility, which leaders say will be an integral part of the fiber-optic network being built throughout the city. In addition to housing the administrative office and warehouse, the facility will also be the home of Opelika Power Services’ fiber hub.
Mayor Gary Fuller notes how the people of Opelika entered the business of municipal utilities over one hundred years ago, when the community purchased the then-private electric utility. He spoke about how the people of Opelika carry on that self-reliant streak with their new fiber network.
According to, Beth Ringley, Interim Director of Opelika Power, 90% of the fiber is installed underground throughout the city and should be nearly completed by the end of the summer. The $41 million project is scheduled for completion in the spring of 2013 and the first customers are expected to connect at that time.
Two videos offer further coverage of this new community network. These videos are no longer available.
“It’s a big, big day for the city of Opelika,” Mayor Gary Fuller said. “It’s important for our future.”
The Chattanooga Times Free Press, reports that the City's last IntelliRuptor, or "smart switch," will be installed on April 24th. No wonder EPB was named one of The Networked Grid - Top Ten Utility Smart Grid Deployments in North America by Greentech Media. EPB also received a special award for Best Distribution Automation, thanks to its fiber-optic network. EPB and Chattanooga have been similarly recognized in the past. Quickly locating and localizing power outages will continue to limit power loss which will save tens of millions of dollars each year. According to Harold DePriest, CEO of EPB, "Nobody has applied them (IntelliRuptors) in the numbers we've applied them." A tornado on March 2nd tested the new system and, while 3,470 customers lost power, estimates are that the number would have been double without the use of the smart switches. Smart meters are also being installed, allowing customer usage data sent to the utility, which means that EPB will immediately know who has power and who does not in the aftermath of storms. EPB saved about 5 million customer minutes in 2011 with half of the switches installed and half of installed switches set up to function automatically. EPB estimates and annual saving of up to $40 million to $45 million for businesses, and between $6 million and $7 million in savings for the utility because of fewer and limited outages. Putting a dollar amount on loss due to power outages is no easy task. Estimates for losses in the United States vary but a 2005 research study from the Lawrence Berkeley National Laboratory (Berkeley Lab) put the figure at $80 billion dollars annually. With more smart grids like the EPB system, that figure could be significantly reduced. Community fiber networks are uniquely poised to offer the best option to electric utilities that need reliable, robust connections across their footprint. A significant number of smart meters (approximately 60,000) and automation points (approximately 300) remain to be installed in Chattanooga.
That system never reached the entire city and was limited to outdoor use. Santa Clara FreeWiFi will work citywide, indoors as well as outdoors. A new, high-density design will provide up to 40 access points per square mile - compared with less than 30 access points for the MetroFi system.I share Esme Vos' reaction regarding its likely difficulties in actually functioning inside but the Santa Clara Free Wifi website strongly recommends that anyone who is planning to use it inside use a Wi-Fi- booster, which can be found at most tech stores. Silicon Valley Power, as we previously noted, has an extensive fiber-optic system that is already uses for its power management. That will provide the necessary backhaul to the wireless access points. This will undoubtedly be a nice amenity for those living or traveling in Santa Clara but it is unlikely to suffice for those who need reliable and high capacity connections to the Internet. It will be interesting to see who is ultimately paying for the Internet access charges as well as how the economics work out. The network will be helpful for remote meter readings -- perhaps the savings there will entirely pay for the public's usage of the network. Ponca City has been taking this approach for some time now and it seems to work for them.
“The meetings are designed to answer any questions the Tullahoma community has about the AMI technology”, said Ernie Hobbs, Communications and Marketing Specialist for TUB. “We want to assure the community that automated meter reading is the next step in providing exceptional customer service. AMI is a step forward for Tullahoma, and it will provide additional opportunities for our customers by allowing them to monitor their own usage of utilities.” The AMI installation is a replacement of current water and electric meters. The new meters can transmit usage data through TUB’s secure fiber network. The infrastructure upgrade has been in the planning stage for several years. However, with Tennessee Valley Authority (TVA) moving to Time Of Use (TOU) rates, TUB decided it was time to begin the AMI project to align with the TVA rate change.A recent newsletter from the utility explains further, noting that the Tennessee Valley Authority (a federal agency that produces the power used by Tullahoma and many other public utilities) is going to start charging time-of-use rates starting in fall of 2013. This is because electricity is more expensive to produce and distribute based on the amount being used - time of use pricing will encourage people to use more power when it is cheaper to produce and less when it is expensive. This time-of-use pricing is one component of a "smart-grid." Unfortunately, some investor-owned utilities have used time-of-use pricing to increase their revenues without substantially benefiting ratepayers -- which is one reason many are suspicious of the entire concept. Hence the public meetings. Because Tullahoma has its publicly owned network already connecting much of the community, it is better positioned to deal with TVA's changing rates than other communities.
That brought to mind my recent conversation with Larry Owens, manager of customer services at Silicon Valley Power. The Santa Clara, Calif.-based municipal electric utility built fiber between its subsystems to increase the organization’s reliability. But Silicon Valley Power overbuilt that network, which enables it to lease dark fiber to the school district and service providers via its SVP Fiber entity. The electric company also purchased MetroFi, a free Wi-Fi services company that fell on hard times, to connect new smart energy meters to its offices. Those Wi-Fi assets also are being leveraged to deliver free outdoor Wi-Fi access to anyone within Santa Clara.I remember reading about this network earlier this year in a Public Power Daily release:
The technology and added bandwidth capacity allow teachers to hold virtual field trips and will eventually allow students who are unable to attend school the opportunity to join their classrooms via a home computer, Silicon Valley Power said. Download speeds have made classrooms more efficient, the utility said. "Before the fiber network, the download process was very slow and sometimes wouldn't work at all when my class tried to use streaming video to add to our lessons," said Jennifer Rodriguez, who teaches a fourth- and fifth- grade combo class at Katherine Hughes Elementary School. "Now I can utilize instructional videos off the web and stream them quickly, making the lesson more interesting and the learning more fun for my students."
We've been raving about Chattanooga' FTTH network and smart-grid for quite some time now, but others are just learning about it. Chattanooga's Electric Power Board serves some 170,000 households and businesses across 600 sq miles. Though we have mostly focused on the triple-play benefits of the network
Chattanooga had been named one of the 2011 Top 21 Intelligent Communities of the year previously, but more recently made the cut to a Top 7 Intelligent Community. Time will tell if is awarded the Intelligent Community of the year.
[A]ll of its 170,000 electricity customers could benefit from the infrastructure. The network will serve as the conduit for 80 billion data points on electricity use per year that could help the utility run more efficiently, reduce outages, and give customers more control over their monthly electricity expenses.
“Chattanooga is the epicenter of energy technology,” said Harold DePriest, president and CEO of EPB. “One of our biggest jobs is to exploit this technology for the benefit of our community.”
With power outages previously taking a $100 million/year bite out of private businesses served by EPB, the new FTTH network will enable a much smarter network that will radically decrease those outages and thereby make businesses more productive. By mid 2012, businesses will see a 40% decrease outage time. Over time, as EPB's grid grows ever "smarter," those losses will likely decrease further while also providing energy users (residential and business) more opportunities to manage their power consumption.
For those who only associate the smart-grid with enabling time-of-use pricing (paying more electricity during periods of high demand), there are other important, if hidden benefits:
EPB contracted with Alcatel-Lucent as its GPON network supplier. "We've designed our network a little bit different, with our control center located where our operations center is," says Wade. "We've designed a series of fiber rings that circle our city, allowing us to have multiple 10 Gig MPLS rings, terminating in 17 communications hubs connected back with our control center."Another article from Cable 360 (affiliate) gets into the smart-grid details of the network:
As far as the cost savings of the smart grid are concerned, users often don't realize that it costs several times more at certain times of day to generate electricity than it does at others, says EPB COO David Wade.But perhaps the most interesting update from EPB is another window into their take rates (from Tecca.com):
We are ahead of our business plan projections for this time frame. Since our launch last September (2009), we have signed up 18,873 homes to our EPB fiber optics services. That is a 15.45% take rate. Our goal is a 35% take rate, and we believe we will reach that in 2 years. Of our EPB fiber optics customers, 81% are receiving our Fi-Speed internet service. We are still building out fiber optics as well, and our entire 600-square-mile customer service area will have access to these advanced services by the end of the this year (2010).And finally, a short interview (audio quality is not good) with an EPB employee discussing Chattanooga's community fiber network. An interesting piece: noting that EPB views all employees as ambassadors of their product and offered them public speaking training.