-- Scotts Contracting - StLouis Renewable Energy

Search This Blog

6.18.2010

Gulf oil full of methane, adding new concerns

Jake Tapper on Barton's Apology to BP Play Video ABC News  – Jake Tapper on Barton's Apology to BP
Related Quotes
Symbol Price Change
BP 32.04 +0.33
^GSPC 1,116.78 +0.74
^IXIC 2,306.91 -0.25
The oil damaged shoreline in the Northern reaches of Barataria Bay is seen amidst work boats in oil polluted waters as Louisiana Gov. Bobby Jindal's t AP – The oil damaged shoreline in the Northern reaches of Barataria Bay is seen amidst work boats in oil polluted …

NEW ORLEANS – It is an overlooked danger in the oil spill crisis: The crude gushing from the well contains vast amounts of natural gas that could pose a serious threat to the Gulf of Mexico's fragile ecosystem.

The oil emanating from the seafloor contains about 40 percent methane, compared with about 5 percent found in typical oil deposits, said John Kessler, a Texas A&M University oceanographer who is studying the impact of methane from the spill.

That means huge quantities of methane have entered the Gulf, scientists say, potentially suffocating marine life and creating "dead zones" where oxygen is so depleted that nothing lives.

"This is the most vigorous methane eruption in modern human history," Kessler said.

Methane is a colorless, odorless and flammable substance that is a major component in the natural gas used to heat people's homes. Petroleum engineers typically burn off excess gas attached to crude before the oil is shipped off to the refinery. That's exactly what BP has done as it has captured more than 7.5 million gallons of crude from the breached well.

A BP spokesman said the company was burning about 30 million cubic feet of natural gas daily from the source of the leak, adding up to about 450 million cubic feet since the containment effort started 15 days ago. That's enough gas to heat about 450,000 homes for four days.

But that figure does not account for gas that eluded containment efforts and wound up in the water, leaving behind huge amounts of methane. Scientists are still trying to measure how much has escaped into the water and how it may damage the Gulf and it creatures.

The dangerous gas has played an important role throughout the disaster and response. A bubble of methane is believed to have burst up from the seafloor and ignited the rig explosion. Methane crystals also clogged a four-story containment box that engineers earlier tried to place on top of the breached well.

Now it is being looked at as an environmental concern.

The small microbes that live in the sea have been feeding on the oil and natural gas in the water and are consuming larger quantities of oxygen, which they need to digest food. As they draw more oxygen from the water, it creates two problems. When oxygen levels drop low enough, the breakdown of oil grinds to a halt; and as it is depleted in the water, most life can't be sustained.


The National Science Foundation funded research on methane in the Gulf amid concerns about the depths of the oil plume and questions what role natural gas was playing in keeping the oil below the surface, said David Garrison, a program director in the federal agency who specializes in biological oceanography.

"This has the potential to harm the ecosystem in ways that we don't know," Garrison said. "It's a complex problem."

BP CEO Tony Hayward on Thursday told Congress members that he was "so devastated with this accident," "deeply sorry" and "so distraught."

But he also testified that he was out of the loop on decisions at the well and disclaimed knowledge of any of the myriad problems on and under the Deepwater Horizon rig before the deadly explosion. BP was leasing the rig the Deepwater Horizon that exploded April 20, killing 11 workers and triggering the environmental disaster.

"BP blew it," said Rep. Bart Stupak, D-Mich., chairman of the House investigations panel that held the hearing. "You cut corners to save money and time."

In early June, a research team led by Samantha Joye of the Institute of Undersea Research and Technology at the University of Georgia investigated a 15-mile-long plume drifting southwest from the leak site. They said they found methane concentrations up to 10,000 times higher than normal, and oxygen levels depleted by 40 percent or more.

The scientists found that some parts of the plume had oxygen concentrations just shy of the level that tips ocean waters into the category of "dead zone" — a region uninhabitable to fish, crabs, shrimp and other marine creatures.

Kessler has encountered similar findings. Since he began his on-site research on Saturday, he said he has already found oxygen depletions of between 2 percent and 30 percent in waters 1,000 feet deep.

Shallow waters are normally more susceptible to oxygen depletion. Because it is being found in such deep waters, both Kessler and Joye do not know what is causing the depletion and what the impact could be in the long- or short-term.

In an e-mail, Joye called her findings "the most bizarre looking oxygen profiles I have ever seen anywhere."

Representatives of the National Oceanic and Atmospheric Administration acknowledged that so much methane in the water could draw down oxygen levels and slow the breakdown of oil in the Gulf, but cautioned that research was still under way to understand the ramifications.

"We haven't seen any long-term changes or trends at this point," said Robert Haddad, chief of the agency's assessment and restoration division.

Haddad said early efforts to monitor the spill had focused largely on the more toxic components of oil. However, as new data comes in, he said NOAA and other federal agencies will get a more accurate read on methane concentrations and the effects.

"The question is what's going on in the deeper, colder parts of the ocean," he said. "Are the (methane) concentrations going to overcome the amount of available oxygen? We want to make sure we're not overloading the system."

BP spokesman Mark Proegler disputed Joye's suggestion that the Gulf's deep waters contain large amounts of methane, noting that water samples taken by BP and federal agencies have shown minimal underwater oil outside the spill's vicinity.

"The gas that escapes, what we don't flare, goes up to the surface and is gone," he said.

Steven DiMarco, an oceanographer at Texas A&M University who has studied a long-known "dead zone" in the Gulf, said one example of marine life that could be affected by low oxygen levels in deeper waters would be giant squid — the food of choice for the endangered sperm whale population. Squid live primarily in deep water, and would be disrupted by lower oxygen levels, DiMarco said.

Meanwhile, the Coast Guard signaled a shift in strategy Friday to fight the oil, saying it was ramping up efforts to capture the crude closer to shore.

Coast Guard Adm. Thad Allen said an estimated 2,000 private boats in the so-called "vessels of opportunity" program will be more closely linked through a tighter command and control structure to direct them to locations less than 50 miles offshore to skim the oil. Allen, the point man for the federal response to the spill, previously had said surface containment efforts would be concentrated much farther offshore.



--
Scott's Contracting
314-243-1953
scottscontracting@gmail.com
http://www.stlouisrenewableenergy.blogspot.com
http://www.stlouisrenewableenergy.com
scotty@stlouisrenewableenergy.com

Industry reactions on Kerry Lieberman American Power Act

Industry groups, utilities and advocacy organizations are already sounding off following the release of the draft legislation put forward by Sens. John Kerry and Joe Lieberman.

Summaries of the act spell out a goal of reducing greenhouse gas emissions by 17 percent by 2020 and 80 percent by 2050. To achieve these cuts, the act will reportedly use a carbon cap-and-trade program.

Here is a sampling of what energy sector groups have to say about the American Power Act:

AWEA statement:

The American Wind Energy Association (AWEA) issued the following statement from AWEA CEO Denise Bode on the bill outlined by Senators Kerry and Lieberman:

"The wind energy industry appreciates the efforts of Senators Kerry and Lieberman to address climate change in their proposal. We look forward to seeing provisions on renewable energy like a strong renewable electricity standard as well as energy efficiency to create new clean energy jobs and avoid carbon in the near term in any package considered by the Senate. We urge Senate leadership to move quickly on strong legislation."
 
Duke Energy statement:

The following is a statement from Duke Energy Chairman, President and CEO Jim Rogers about energy and environmental legislation proposed today by Senators John Kerry and Joe Lieberman.

"Senators Kerry and Lieberman's energy bill will create jobs, protect electricity consumers, make our nation's energy supply more secure, and protect our environment. Their leadership — and the efforts of Senator Lindsey Graham to craft this legislation — is extraordinary. 

"The legislation can help the U.S. get its economic 'mojo' back. It also sends a clear signal to our nation's innovators that there will be markets for their products and services. 

"One of my first jobs after law school was as a consumer advocate in Kentucky, challenging utility rate cases in the 1970s.

"Today, I am here as an advocate for Duke Energy's 4 million customers in five states in the Midwest and Carolinas who depend on coal for the majority of their electricity. I am also here as an advocate for the tens of millions of electricity customers in the 25 states where more than 50 percent of their electricity is generated using coal.

"Senators Kerry and Lieberman's bill helps 'get our transition right' to clean modern energy in a manner that protects American families and protects American factories, both of which depend on affordable power.

"It also gives our electric industry the policy roadmap we need to invest tens of billions of private capital to retire and replace aging power plant fleets with modern, efficient and clean plants.

"The sooner senators from both parties weigh in to constructively debate and move this legislation forward, the faster the private sector can put people to work and help get our economy moving again."

Dow Chemical Co. statement:

The Dow Chemical Co. commends Senators Kerry and Lieberman for their hard work in developing draft legislation (The American Power Act) for a comprehensive energy and climate change plan. We also commend Senator Graham for his bipartisan contribution to this legislation.

Dow supports a sustainable energy policy for the United States. We urge Congress to pass legislation this year in order to create American jobs, enhance national energy security and lower greenhouse gas emissions.

The certainty of a comprehensive, sustainable energy plan will allow manufacturing companies like Dow to make investments in clean energy that will power the American economy, foster innovation, optimize our domestic energy resources and allow the U.S. to capture the lead in the global clean energy market.

This bill recognizes the need to maintain and enhance the competitiveness of American manufacturers. We look forward to working with Senators Kerry, Lieberman, Sherrod Brown and others to ensure that the provisions in the bill are workable and effective in preventing the shifting of carbon emissions to other parts of the world.

Today the Senate begins a process of additional deliberation to produce final legislation. Dow will continue to support this process with the aim of passing a bill that garners bipartisan support that creates new jobs, improves our energy security, drives innovation and protects our environment.

FPL Group CEO, Lew Hay statement:

"Senators Kerry and Lieberman deserve tremendous credit for crafting a proposal that would move the country in the right direction on energy and climate issues. After years of debate and half measures, the United States still lacks a long-term national energy strategy, leaving us behind other countries in building and exporting the clean energy economy of the future. If we are to continue to lead the world in technological advances, job creation and economic security, we need a new approach. The most essential step — which is at the heart of the American Power Act — is to set a price on carbon dioxide emissions. With a gradually escalating price on carbon that begins to reflect the full social costs of emitting greenhouse gases, the country will make a smooth transition from the high-carbon fuel sources of the past to the next generation of low- and zero-emitting domestic energy sources. No legislation is ever perfect, this bill included, but Sens. Kerry and Lieberman have shown true leadership in their efforts to reach a balanced solution that all parties to this debate should be able to support. We applaud their efforts and look forward to working with them to get a bill signed into law."

T. Boone Pickens statement:

"Senators Kerry and Lieberman are to be commended for a plan that recognizes the economic and national security threat of our ever-increasing dependence on foreign oil, particularly OPEC oil. Achieving energy security is not easy and I applaud their focus on a broad energy package that includes replacing foreign oil/diesel/gasoline with cleaner, abundant domestic natural gas in America's heavy duty vehicle fleets. I look forward to working with them in the coming weeks to focus attention on that aspect of their legislation. More than 1.6 million Americans have signed on to my campaign to solve the foreign oil crisis, and I'm going to see to it that this objective is achieved as the legislative process evolves. Using natural gas as a transportation fuel is a non-partisan issue. The time to act is now."

Natural Resources Defense Council statement:

Today, Senator Kerry and Senator Lieberman released comprehensive clean energy and climate legislation. The bill provides a good starting point, and we look forward to working with Senator Majority Leader Reid and President Obama to build on this foundation without delay to deliver legislation that puts Americans back to work, reduces our dependence on oil, and creates a healthier future for our children.

We need that legislation now more than ever. As the Deepwater Horizon disaster continues to unfold with tragic consequences, it has become painfully clear that America needs a safer, cleaner approach to energy development. Congress must enact a comprehensive clean energy and climate bill this year that puts America back in control of our energy situation.

This draft legislation gets us moving in the right direction.

It is too soon to say where NRDC stands on every aspect of the bill. As I write this, NRDC experts are combing through the document, and I imagine they will discover things in it that NRDC likes and things we don't. Here's where we stand on what we've seen so far.

* The bill's core carbon pollution limits are solid. These emission limits get tighter every year and will drive investments in clean energy that create jobs, cut pollution, and end our addiction to oil from dangerous locations, both offshore and overseas. 

* The bill would be more effective if its overall pollution limits were backed up by minimum performance standards for the largest polluters. We will work to strengthen the bill to preserve more of the Clean Air Act's proven approach to cutting air pollution.

* The bill must not create incentives for offshore oil drilling or push forward drilling before we understand the risks involved for specific areas. The current presidential moratorium does not go far enough, and does not, for example, stop the drilling planned for this summer in Alaska.

* The subsidies for nuclear power in the draft bill are excessive and the proposed weakening of safety and environmental licensing reviews is ill-advised. NRDC will oppose these provisions.

* The energy efficiency and forest protection provisions should be more robust, and NRDC will work to strengthen these provisions as the process moves forward.

Senators Kerry and Lieberman have done a remarkable job of building the foundation for clean energy and climate action and overall, I believe the bill is a good start. But to realize the promise of the bill, we need leadership from the top.

We need President Obama and Majority Leader Reid to guide a process that brings Senators of good will from both sides of the aisle together around a comprehensive clean energy and climate bill — one that draws on the best elements of this bill as well as other proposals so the Senate can pass effective legislation without delay.

United Steelworkers statement:

Leo W. Gerard, International President of the United Steelworkers, issued the following statement:

"The USW has long believed that the goals of stopping the threat of climate change and creating thousands of clean energy jobs can and should be two sides of the same coin. To do this, a climate bill must ensure that emissions are actually reduced and not simply off-shored along with millions of American jobs.

"A well-constructed approach should limit the amount of carbon 'leakage' — the incentive for production of goods and jobs to simply move to countries that fail to address global climate change. This leakage of emissions and jobs has the potential to undermine both the economic and environmental goals of energy and climate legislation, and it is critical that any climate bill include a comprehensive and fully-funded package of policies to prevent it.

"Energy-intensive, trade-exposed manufactured products will be more heavily impacted by a carbon price than others — and while this can be mitigated long-term by improvements in efficiency and cleaner processes — this will take time and requires the right combination of adopted policies. In the meantime, these industries could potentially face decimation and massive job loss at the hands of foreign competitors that do not face similar carbon costs, unless both a short-term and long-term program is put in place to ensure the cost disadvantage faced by US manufacturers is eliminated.

"At the beginning of the U.S. program, a robust and fully-funded transition assistance program of output-based allocations for at-risk manufacturers is necessary. These allocations will allow manufacturers the breathing room necessary to make investments in cleaner processes, but they should be considered temporary in nature. They must be backed up by a border allowance requirement on products from countries that do not share America's commitment to reducing greenhouse gas emissions through effective, meaningful and comparable policies.

"Climate change legislation, done properly, has the potential to create new and expanding opportunities for revitalizing manufacturing and job creation in this country. This requires not only a comprehensive anti-leakage program, but a variety of other policies such as an ambitious Renewable Electricity Standard, an effective worker training provision, and incentives for clean energy product manufacturing. It must recognize that for the American economy to truly thrive, this bill must focus on the entire clean energy supply chain.

Shell Oil Co. statement:

"Shell commends Senators Kerry and Lieberman for introducing an energy and climate bill designed to strengthen our economy, create jobs and enhance our energy security while reducing greenhouse gas emissions."

"This legislation ensures America's global competitiveness and recognizes the role clean natural gas can play in growing the economy and protecting the environment. The senators have taken a fresh approach to transportation emissions that encourages the development of home-grown energy, provides transparency for consumers and enables American refiners to compete against imports of diesel and gasoline."

"We are pleased the senators engaged Shell, along with other energy companies and an array of environmental and business groups, in dialogue as the bill was developed. They have pursued an open and inclusive process and ensured that a range of views were taken into account. Shell recognizes the hard work and important contributions of Senator Lindsay Graham to this process."

"The demand for energy continues to grow. All energy sources — oil, gas, wind, solar, nuclear, and energies yet to be discovered — will be part of our energy mix for decades to come. Shell continues to employ our people, technology and expertise in the environmentally sound development of existing and future energies. We remain committed to America's energy security and global competitiveness."

Westinghouse Electric Co. statement:

In commenting on the legislation, Westinghouse President and CEO Dr. Aris S. Candris said:

"The new nuclear energy plants that are being built, and will be built, over the next decades are clearly the most efficient and safest electricity-generating plants ever designed. The Westinghouse AP1000 nuclear plant, for example, makes use of naturally occurring, passive safety systems that rely on gravity, condensation and natural circulation to begin cooling the plant in the highly unlikely event of an accident even without human intervention.

"This unsurpassed level of safety of the new plants, and the proven track record of success of the existing operating fleet, will help to ensure that nuclear energy achieves its full potential and that the United States will be able to achieve higher levels of energy independence."

NRG Energy statement:

"This bill marks another major step forward on America's path to energy security, internationally competitive industries, new American jobs and a clean, healthy environment. Our country today faces new and sobering energy policy and national security threats, which need to be addressed through safe, clean domestic energy and ways to use it instead of imported oil," said David Crane, NRG Energy President and Chief Executive Officer. "As a leading developer of new nuclear power plants and an innovative electric car charging business, NRG especially appreciates this bill's strong and pragmatic provisions to ramp up the nuclear renaissance, while quickly deploying the infrastructure for electric vehicles. These steps, along with aggressive, budget-neutral funding for renewable energy and carbon capture and storage, are the most effective means to quickly give American drivers a safe, homegrown, competitive alternative to importing oil from unfriendly regimes—while squarely addressing our major sources of carbon dioxide emissions."



--
Scott's Contracting
314-243-1953
scottscontracting@gmail.com
http://www.stlouisrenewableenergy.blogspot.com
http://www.stlouisrenewableenergy.com
scotty@stlouisrenewableenergy.com

Microsoft and Home Energy, "The Hohm Score"

Microsoft makes Hohm Scores available to 60 million homes in the U.S.


Redmond, Wash., May 26, 2010 — Microsoft Corp. announced the availability of the Hohm Score, an estimate of a home's energy efficiency, offered as part of the company's free online home energy management tool, Microsoft Hohm.

By typing in an address at http://www.microsoft-hohm.com, anyone can see the Hohm Score for almost any home in the U.S.

Hohm Scores are calculated by comparing a home's actual and potential energy efficiency, and is grounded with advanced analytics licensed from Lawrence Berkeley National Labs and statistical data from the Department of Energy. In addition to individual scores, Hohm Scores are available by ZIP code, city and state so anyone can compare a home's score with others around the country.

The national average Microsoft Hohm Score comes in at 61, with Hawaii topping the list as having the highest average Hohm Score and with Texas coming in last.

"The Hohm Score is the first step in helping us all make smarter decisions about our home energy use," Batterberry said. "If each of the 60 million households improved their Hohm Score by five points, collectively that would equal an estimated $8 billion in savings a year."

Available today for free to all U.S. residential energy consumers, Hohm is working to help everyone save energy and money by offering insight into home energy usage and by providing personalized recommendations.

Hohm has established partnerships with utilities and the Ford Motor Co., and is actively working with these partners to realize a long-term vision of connecting just about anything that uses energy to help automate and optimize energy use for consumers.



--
Scott's Contracting
314-243-1953
scottscontracting@gmail.com
http://www.stlouisrenewableenergy.blogspot.com
http://www.stlouisrenewableenergy.com
scotty@stlouisrenewableenergy.com

SmartGrid Intelligence, Look to the Sky

Looking to the Sky for SmartGrid Intelligence


Bernie Nelson, Hughes Network Systems, LLC

Critical to the level of intelligence that can be achieved in making the grid smarter is its backbone—the network and communications infrastructure. The requirements of the communications network are demanding, encompassing issues such as scalable bandwidths, robust security, high network reliability and availability, and cost–effectiveness. Many in the industry have concluded that the most cost-effective approach to meet these requirements is to leverage the range of transport technologies available, while relying on common open standards, such as IP, to integrate into a single overall network. This article presents the value that advanced, satellite-based networks can deliver as part of the smart grid communications infrastructure, across areas ranging from substation automation (SA) and distribution automation (DA) to AMI collectors.

 

Not Your Father's Satellite

 

Unknown to some, satellite networks have evolved at a similar or faster pace than other networking technologies, making huge strides in improving performance, reliability and cost. Some of the highest availability networks in the enterprise market, such as for lotteries and emergency preparedness and recovery, are based on satellite and its fundamental advantage: ubiquitous coverage. And now, when combined with high-performance IP and other standards-based capabilities, satellite networks deliver high-quality, private broadband connectivity.

Very high network availability, in excess of 99.99 percent, can be achieved through innovative dual frequency, dual access solutions by using Ku-/Ka-band satellite service in conjunction with L-band satellite service as backup. Smart grid network elements such as remote substations and distribution elements can be connected using satellite without compromising on the expected benefits driving the smart grid.

In addition, new satellite technology can cost-effectively deliver benefits such as on-the-move vehicle connectivity, allowing those out in the field to connect directly with headquarters and eliminate costly trips to the office to get information. Satellite holds the potential to facilitate distribution automation, meaning utility companies can proactively monitor their distribution elements for outages and service demands. Utility managers and technology decision-makers should take into account the benefits satellite technology can deliver for these applications and the benefits they can deliver to smart grid efforts.

 

Substation Connectivity

 

Satellite connectivity has been used for years to provide supervisory control and data acquisition (SCADA) applications for remote locations in the oil and gas industries and other energy exploration areas. The data requirements are generally low in volume but regular in frequency or periodicity. Private satellite networks have served this need well by delivering secure, custom network bandwidth profiles and ubiquitous coverage. The solution has worked well technically and economically for hard-to-reach SCADA and SCADA-like requirements in these industries.

This still holds true. Satellite is a great fit for these types of applications and is in use to support SCADA and other applications at substations. The performance of the applications is consistent and effective. With the increasing goal of achieving near 100 percent uptime, however, conventional Ku- and Ka-band satellite solutions fall short. A typical commercial satellite connection is generally engineered to deliver 99.7 to 99.9 percent link availability, which means that on average, 0.1 to 0.3 percent of the time, a satellite connection will be lost. That percentage coincides with a certain intensity of precipitation. When it rains or snows to a certain degree of intensity, the satellite connection will drop for the period of that critical intensity. Substation connectivity is most critical during storms where electricity outages increase, thus making a conventional satellite solution not optimal to achieve near 100 percent availability, until now.

With any type of connectivity solution, it is difficult to achieve 99.99 or 99.999 percent availability with a single-thread connection. To address this problem, many utility companies employ a backup connection that can increase the availability of any connectivity to nearly 100 percent. So how can this availability be achieved with a satellite-only solution? The answer is with an L-band-based service that backs up the primary Ku- or Ka-band satellite connection. L-band is in the 1-2 GHz range and is not susceptible to degradation during precipitation. When the primary Ku- or Ka-band satellite service fades during rain, the backup path, L-band, will be available to pass traffic. The L-band service is usage-based and can be expensive with heavy usage. Because it will be used as the exception and not the primary connection, however, it only will be used a small percentage of the time to pass low-volume traffic, and, therefore, costs will be kept to a minimum. A commensurate terrestrial solution might cost three times or more for the same level of availability.

By combining L-band with Ku- or Ka-band satellite technology as a high-availability solution, a satellite solution can deliver the performance that has always been delivered for SCADA-like applications, but with near 100 percent availability that is required for substation connectivity. In addition, satellite still provides its inherent advantage—100 percent nationwide coverage. There are no dark spots. Furthermore, satellite supports broadband applications such as Voice over Internet Protocol (VoIP) and video surveillance. Network bandwidth can be tailored to specific requirements, and the solution is completely private, meaning no traffic crosses the public Internet. L-band and Ku-band satellite technology has been available for some time but until now has not been combined in this manner to provide a single solution. A certain set of requirements exists such that the traffic profile, the remote locations and the need for very high availability make this an ideal solution for the utility industry.

 

Distribution Automation

 

Similar data requirements, as those in substation connectivity, exist to support monitoring elements along distribution lines. The attributes of private satellite connectivity to enable distribution automation are similar to those for substation connectivity. A dual path, high-availability solution, however, may not be cost justified. A single, high-availability connection at an access point fed by distribution devices might be a better solution for monitoring and control.

There are a couple of options. One is to use the L-band solution. It has a small form factor, is hardened, can be mounted anywhere, and is easy to install. Again, the downside is usage costs. Depending on the volume of traffic, it might be cost prohibitive to use the L-band solution at all locations. Locations in more densely populated areas likely are better served with an alternative licensed or unlicensed wireless solution. In rural, less dense areas, however, the same wireless technologies might be more costly and in these areas, the slight premium that might be incurred by using an L-band solution might be justified.

The second alternative is to use advanced antenna technology for fixed Ku- or Ka-band satellite service. Emerging advanced antenna designs offer a small form factor, are easily installed and pointed, and have fixed operating costs. In most cases, availability can be designed to approximately 99.9 percent.

 

AMI Backhaul

 

Advanced metering infrastructure (AMI) requires communication between a smart meter at a customer's location and the data center. To achieve this end-to-end connectivity, various technologies can be considered, including deployment of licensed and unlicensed wireless solutions between the home and a collection point further upstream, with subsequent communication to a data center. Common practice in deployments and pilots is to use carrier cellular solutions from the collection point onward to serve the wide area network (WAN) needs in the AMI end-to-end solution. Utilities must consider challenges and considerations with the cellular service, however, such as congestion, loss of coverage during disaster and limited range.

Satellite technology presents a high-quality, low-cost alternative. Enterprise satellite solutions provide ubiquitous, continentwide coverage and because they are private networks, they are not susceptible to public usage because they do not traverse the Internet or other public network. Furthermore, advanced antenna designs allow for easier installation to accommodate mounting on pole tops. Privacy, scalability, flexible bandwidth, ease of deployment and reach are all significant benefits satellite provides as a comprehensive end-to-end AMI solution or at the least as a fill-in for the dark spots of a cellular network solution. In the U.S. it is estimated that 2 percent or more of coverage areas have this dark spot problem, for which last-mile satellite connectivity is a viable, cost-effective alternative to a local wireless solution.

In the midst of all the new and exciting options available to utility providers, communications infrastructure remains one of the most important decisions companies must make when implementing smart grid initiatives. To that end, satellite networking technology has developed rapidly and delivers the combination of high performance, availability and security that can aid smart grid efforts for the utility industry. Substation connectivity, distribution automation and AMI are key areas in which a satellite solution can provide the most cost-effective communications solution. Satellite solutions are an essential part of the multitechnology approach required by the utility industry to achieve an end-to-end, smart grid communications infrastructure—one that is reliable, fast, secure and cost-efficient.

Bernie Nelson is director of service development for utility, energy and transportation with Hughes Network Systems LLC. Nelson has been in the satellite and data networking industry more than 16 years. Reach him at at bernie.nelson@hughes.com.



--
Scott's Contracting
314-243-1953
scottscontracting@gmail.com
http://www.stlouisrenewableenergy.blogspot.com
http://www.stlouisrenewableenergy.com
scotty@stlouisrenewableenergy.com

Connect with Scotts Contracting

FB FB Twitter LinkedIn Blog Blog Blog Blog Pinterest

Featured Post

1 Hack To Eliminate Your A/C Power Bill This Summer!