As a provision of the American Taxpayer Relief Act of 2012, IRA Charitable Rollover was extended through December 2013. This allows individuals who are 70 ½ and older to make a direct transfer totaling up to $100,000 per year to 501(c)3 organizations, like the TSEA, without having to count the transfers as income for federal income tax purposes. With funding, this organization could reach out to the citizens of Tennessee in promoting clean energy for our lives and the lives of our children and their children. Help us make Tennessee cleaner than ever by supporting the American Solar Energy Society as well as Tennessee Solar Energy Association.
Archive for Technology
Solar Panels Growing Hazard for Firefighters – Why the Need for Integrated Converter with each panel
Firefighters battling the massive 11-alarm blaze at the Dietz & Watson distribution center in South Jersey faced an unlikely foe during the fight — solar panels.
A solar array with more than 7,000 photovoltaic panels lined the roof of the nearly 300,000 square-foot refrigeration facility which served as a temporary storage center for the company’s deli meats and cheeses. But the panels, while environmentally sustainable and cost-saving, may have led to the complete destruction of the warehouse.
Fighting the fire under bright blue skies Sunday, Delanco Fire Chief Ron Holt was forced to keep firefighters from attacking the blaze from the roof because of electrocution concerns.
“With all that power and energy up there, I can’t jeopardize a guy’s life for that,” said Holt. Those electrocution fears combined with concerns of a collapse forced firefighters to simply spray the building with water and foam from afar.
Ken Willette from the National Fire Protection Association, a nonprofit that develops standards for firefighting, says electrocution is one of the hazards firefighters are increasingly facing fighting blazes at structures where solar panels are deployed.
“Those panels, as long as there’s any kind of light present, whether it’s daylight or it’s electronic lamp light, will generate electricity,” he said.
A 2011 study from the Underwriters Laboratory found solar panels, being individual energy producers, could not be easily de-energized from a single point like other electric sources. Researchers recommended throwing a tarp over the panels to block light, but only if crews could safely get to the area.
SLevy: The issue is the series connection of many panels result in high voltages being developed which could be lethal if improperly handled. There are several answers but the one that makes the most sense to me is to modify the junction box in the back of each panel with an intelligent converter (either a DC-DC converter or a DC-AC inverter) that can disconnect itself from the string either from an internal sensor detecting a fault condition, like heat, or by the main disconnect for the solar system being activated so that all panels are isolated from each other. Then the danger is controlled and fire-persons can do their job and not worry about high voltage danger. A wireless remote monitor will verify the safe condition allowing firefighters to do their job in safety. The other benefit to the solar array owner is the same detection system will warn of panels being stolen. The cost of the intelligent converter should be 10% or less than the cost of the basic panel. Present fire safety regulations do not address this problem.
Since the year 2000, the number of solar power installations in the Tennessee Valley has grown from only three to nearly 1,700.
Buoyed by some of the most generous incentives offered by any utility in the South, TVA gets as much power from the sun as it does from either Norris or Chickamauga dams.
But the boom in small-scale solar generation has turned to a bust for many solar installers this summer. TVA capped its 17-cents-per-kilowatt-hour payment for solar generation to only 10 megawatts this year and the limit quickly was reached before many interested homeowners and businesses were able to take advantage of the offer.
Solar power enthusiasts appealed to TVA directors Thursday to buy more solar through its Green Power Providers program. TVA spends about $25 million a year in above-market payments to buy solar generation to help meet its goal of getting more electricity from renewable sources.
As solar panels become more efficient and the industry matures, TVA is looking to cut that subsidy and move toward more market-rate prices for solar generation.
TVA and Pickwick Electric Cooperative are working with Strata Solar to develop two 20-megawatt solar farms near Selmer, Tenn., which will sell power to TVA at market rates. The new solar installations will be the biggest yet in Tennessee and could provide enough electricity for 4,000 Valley homes.
“I actually think we’ve been in a pretty good spot here,” TVA President Bill Johnson said. “As the price comes down, we can afford to do more solar.”
TVA Chairman Bill Sansom said TVA has to balance the costs of subsidizing small solar units, which tend to increase the average price of TVA power, with consumer desires for more solar and assistance to help nurture the new industry.
TVA opened up another 2.5 megawatts in its Green Power Partners program on Aug. 1, but that capacity was sold at auction in only one minute and most applicants didn’t get a piece of the program. TVA has not yet set the price or capacity for its solar programs for 2014, but officials said the utility should soon announce its plans.
“We are looking at the program and we’re looking at the type of adjustments that we can make to help make it a little more friendly for folks,” said Joe Hoagland, TVA’s senior vice president of policy and oversight.
Large-scale solar farms are adding solar generation at less cost for TVA, Hoagland said. TVA still has nearly 75 percent of the capacity available for such large-scale, market-rate solar generation.
“We want to see more of those because they not only give us more renewable energy, they do it without putting any extra burden on our other ratepayers,” Hoagland said.
Future purchase plans and incentives for renewable power will be shaped, in part, by a new Integrated Resource Plan TVA will launch this fall to study future power options for the next two decades. The updated power plan will be finalized by 2015, Hoagland said.
Background: Raccoon Mountain pumped store is one of the largest in the United States holding the equivalent to 12% of the total energy used in Tennessee in one day. Both nuclear and solar PV need energy storage to maximize the return on investment. Pumped storage of water is the most cost effective massive energy storage method known today. Construction at Raccoon Mountain began in 1970 and was completed in 1978. The reservoir constructed at the top of the mountain has 528 acres of water surface. The dam at Raccoon Mountain’s upper reservoir is 230 feet high and 8,500 feet long. It’s the largest rockfill dam ever built by TVA. Raccoon Mountain Pumped-Storage Station is a hydroelectric facility. It has four generating units with a net dependable capacity of 1,652 megawatts. Net dependable capacity is the amount of power a plant can produce on an average day, minus the electricity used by the plant itself. Several units at the 600 MW Raccoon Mountain pump storage facility were taken offline in 2010 due to rotor cracks.
Update on the status of the repair work at that plant by Bill Johnson. In an interview with Power Engineering Mr. Johnson, President of TVA, said that all four of those units were taken out of service after the discovery of cracks in the rotors. “There’s a similar plant in Europe where the cracks were first discovered, and when we inspected here we found the same thing. We are having new rotors manufactured in Europe. I would expect the first unit to be back online around July of this year, and the other three probably in the next ten to twelve months. We’re actively working on that. While the plant was down, we’ve done a lot of other things: replaced transformers, did some other things, but I would hope that we’ll see the first unit coming back in the July timeframe.”
If anybody doubts that federal energy regulators are aware of the rapidly changing electricity landscape, they should talk to Jon Wellinghoff, chairman of the Federal Energy Regulatory Commission (FERC).
“Solar is growing so fast it is going to overtake everything,” Wellinghoff told GTM last week in a sideline conversation at the National Clean Energy Summit in Las Vegas.
If a single drop of water on the pitcher’s mound at Dodger Stadium is doubled every minute, Wellinghoff said, a person chained to the highest seat would be in danger of drowning in an hour.
“That’s what is happening in solar. It could double every two years,” he said.
Geothermal, wind, and other resources will supplement solar, Wellinghoff said. “But at its present growth rate, solar will overtake wind in about ten years. It is going to be the dominant player. Everybody’s roof is out there.” Advanced storage technologies also promise lower costs, he said. “Once it is more cost-effective to build solar with storage than to build a combustion turbine or wind for power at night, that is ‘game over.’ At that point, it will be all about consumer-driven markets.”
If FERC does not ensure the grid is ready to integrate the growing marketplace demand for distributed solar and other distributed resources, Wellinghoff said, “We are going to have problems with grid reliability and overall grid costs.”
Transmission infrastructure will be able to keep up with solar growth. The big changes will be at the distribution level where FERC has less influence, he explained. But the commission has been examining the costs and benefits of distributed generation (DG) in wholesale markets.
“Rate structures need to be formulated in ways that fully recognize the costs and benefits of distributed resources,” Wellinghoff said. “In many utility retail rates, a disproportionate amount of the fixed costs are recovered through a variable rate. That is problematic when a lot of people go to distributed generation.”
The net metering controversy this has caused at utilities like Xcel and Arizona Public Service, he said, can only be resolved by “the fully allocated, fully analyzed cost and benefit study of distributed resources.”
EVENT DATE CITY EVENT NAME
Mon, 09/09/2013 JOHNSON CITY Free NABCEP Entry Level Training and test
Mon, 09/16/2013 JACKSON Free NABCEP Entry Level Training and test
Wed, 09/18/2013 Memphis Solar PV Installer Boot Camp Training + NABCEP Entry Level Exam Prep Cost $1,295
More details on free NABCEP training, go to earlier blog
For the Memphis course go to this site
As Debbie Dooley co-founder of the Atlanta Tea Party explains, “I’m a grandmother, and I want to be able to look my grandson in the eyes and tell him I’m looking out for his future. Conservation is conservative, and protecting our children and our natural resources is a conservative value.” Those who believe in the free market need to reexamine the way our country produces energy. Giant utility monopolies deserve at least some competition, and consumers should have a choice. It’s just that simple, and it’s consistent with the free-market principles that have been a core value of the Tea Party since we began in 2009.
“In Georgia, we have one company controlling all of the electricity production, which means consumers have no say in what kind of power they must buy. A solar company could not start up and offer clean power to customers because of restrictions in state law. Our Constitution does not say that government should pick winners and losers, but that is what government is doing when it protects the interests of older technologies over clean energy that’s now available at competitive prices. I say, let the market decide” says Debbie.
She goes on to explain, “Georgians are currently and unjustly denied this opportunity, and will continue to be unless a law is passed to change the system. That is why the Atlanta Tea Party supported Senate Bill 401 in the past legislative session. Georgia Power opposed it and it never made it out of committee. We will try again when the Georgia legislature reconvenes in January 2014. All states should allow their citizens the opportunity to generate and sell their own solar power.”
So I ask our elected state and federal officeholders, “Why hesitate in voting for extending the Master Limited Partnership to renewables?” Level the energy playing field. Here in Tennessee, our citizens have the same demands as our neighbors in Georgia. TVA board serves the people in the valley, why not listen to their demands for cleaner energy?
Postscript: Americans for Prosperity, which like the Tea Party have been nurtured and sponsored by the Koch brothers oil billionaires, is dismissing the Georgia faction as an aberration, or even more damming, as a “green Tea Party.” It has sought to turn the issue of rights on its head by arguing that rooftop solar will “infringe upon the territorial rights to the distribution grids” of the network operators.
Disputes over the use of small-scale solar power are flaring across the nation. At issue in an Iowa lawsuit is whether solar-system marketers can sell electricity in territories where local utilities have exclusive rights to customers.
In TVA territory distributors are forbidden from generating electricity and that extends down to small installations on residential homes. The overall concept of an individual providing some of its own power and selling the rest to the utility company is called net metering.
Net metering or net energy metering (NEM) allows electricity customers who wish to supply their own electricity from on-site generation to pay only for the net energy they obtain from the utility. NEM is primarily used for solar photovoltaic (PV) systems at homes and businesses (other distributed generation (DG) customers may have access as well). Since the output of a PV system may not perfectly match the on-site demand for electricity, a home or business with a PV system will export excess power to the electric grid at some times and import power from the grid at other times. The utilities bill customers only for the net electricity used during each billing period. Alternately, if a customer has produced more electricity than they have consumed, the credit for that net excess generation will be treated according to the NEM policy of the state or utility.
Benefits of distributed solar include:
• PV systems generate the most electricity during the middle of the day when demand is the highest.
• Net metered PV systems reduce the need to expand transmission grid capacity
• Net metering allows for the development of a solar energy market and the jobs that come with it
Currently 44 states plus D.C. have implemented net metering policies. The following map shows the six states that forbid net metering.
Utilities “are proponents of renewable energy,” said Barry Shear, president of Iowa’s Eagle Point Solar LLC, but only “if they own the energy assets and the electrons flow through their grid and they can bill you.”
“The electric utility industry’s preservation of revenues and investor capital will be determined by its success in aligning with the following five consumer mega-trends reshaping the U.S. economy” says Bill Roth President of NCCT, a nationally recognized business coach, economist, ranked as a top-five writer on sustainability and business best practices. To paraphrase his proposed trends as:
1. Consumers are in active pursuit of lower bills,
2. The electric utility industry’s revenues are at risk with a generation that views the industry as missing in action,
3. Today moms manage the household budget. They expect the companies they do business with, including their utility, to provide products and services that align with their values,
4. Electric utilities need to mimic CEOs of major corporations who are adopting sustainability to reduce their operating costs, increase customer alignment and mitigate risks, and
5. Consumer acceptance of cost reducing disruptive technologies that challenge existing utility economic models.
The issue being brought up in this Iowa dispute is the question as to who supplies electric power to residential customers. The dispute can be resolved with changing the economic model of how solar can be integrated into the existing business models of TVA and independently owned utilities. Nobody has to lose. The existing model in our state can be preserved allowing TVA to generate all the electricity selling the power through their distributors who connect the electricity to the residential commercial customers.
The issue now is not who owns the power sources, but how we raise the funds for solar farms and distributed solar needs. The answer maybe to apply the economic model of micro-investments.
The model published in the July/August issue of Solar Today, addresses the existing barriers through the following channels.
• The income will be generated by residential customers who are interested in improving their environment as well as income generation.
• TVA will manage all future solar installations in cooperation with their distributors.
• Income from the sale of solar power will be channeled from TVA and it’s distributors to the residential investor.
• TVA and its distributors will be responsible for the operation and maintenance of all solar generation where the cost for the O&M will come from the profits of solar sales.
• Home owners and businesses that sign up for the program will agree to compensate the distributors for the cost of maintaining and upgrading the distribution system.
• For distributed generation TVA will compensate the owner of the property for renting their roof.
The essence of the model is discussed in the Solar Today article which can be retrieved at the American Solar Energy Society (ASES) website
Several people from different church denominations attended the event, sponsored by Tennessee Interfaith Power and Light (TIPL), an organization that promotes sustainable energy use among faith communities. According to its website, TIPL is part of a growing national movement of state affiliates, supporting congregations and other partner organizations through leadership development, developing and providing written and electronic resources, and building a network of concerned, committed people throughout the state.
Besides a candlelight vigil, Sunday’s event featured songs, prayers, meditation and a message from Adrienne Schwarte, an associate professor of design at Maryville College who is heavily involved in sustainability issues on campus.
“What we’ve been doing is having all these climate vigils and we’ve been gathering people of other faiths communities together,” said Ginny Ayers, who serves on TIPL’s steering committee and coordinator of Sunday’s event. “There have been several in East Tennessee, including Knoxville, Crossville, Nashville and Chattanooga, but this is our first one in Maryville. We’ve gathered people and put the word out.”
Gene Burr, a member of Tennessee Valley Unitarian Universalist Church in Knoxville who serves on the church’s environmental committee, said the vigil is part of the efforts for TIPL to create more awareness and understanding of climate change and what the implications are for the world.
“This is one way of drawing attention to that effort,” Burr said. “We did one of these last fall in Knoxville at Market Square. When Ginny organized this one in Maryville, she thought Greenbelt Park would be a good location for it. It’s kind of a quiet, effective way of drawing attention to something we should all be concerned about.” Burr said his church has reinstalled 117 solar panels on its roof as part of reducing their carbon footprint.
“We want to do is encourage individuals and faith communities to join in membership. They are just committing to something — there are no dues or anything like that. They’re just committing to dealing with climate change issues.”