Archive for West Tennessee News

Japan Next-Generation Farmers Cultivate Crops and Solar Energy

Farmers in Japan can now generate solar electricity while growing crops on the same farmland. This co-existence or double-generation is known as “Solar Sharing” in Japan. The concept was originally developed by Akira Nagashima in 2004, who was a retired agricultural machinery engineer who later studied biology and learned the “light saturation point.” The rate of photosynthesis increases as the irradiance level is increased; however at one point, any further increase in the amount of light that strikes the plant does not cause any increase to the rate of photosynthesis.

By knowing that too much sun won’t help further growth of plants, Nagashima came up with the idea to combine PV systems and farming. He devised and originally patented special structure, which is much like a pergola in a garden. He created a couple of testing fields with different shading rates and different crops. The structures he created are made of pipes and rows of PV panels, which are arranged with certain intervals to allow enough sunlight to hit the ground for photosynthesis.

Based on the tests conducted at his solar testing sites in Chiba Prefecture, he recommends about 32% shading rate for a farmland space to reach adequate growth of crops. In other words, there is twice as much empty space for each PV module installed. Takazawa installed 348 PV panels on a small 750 square-meter of farmland. PV panels are installed on pipes, which are 3-meter high from the ground. Rows of PV panels are installed every 5 meters. Under the PV system, Takasawa’s father has been cultivating peanuts, yams, eggplants, cucumbers, tomatoes, and taros and will cultivate cabbages during the winter. These vegetables are sold at a nearby street and consumed by his neighbors.

Many have questioned stability and durability of the PV structure for solar shared family. Nagashima stated that his systems, which are made of thin pipes without concrete footings, even withstood strong winds and earthquakes during the Fukushima Tsunami disasters in 2011. These systems are extremely lightweight and installation of PV panels are spaced out, allowing air to flow through between the panels. This will eliminate concern that the panels will receive wind load and be blown away, therefore, reducing the need for complicated and expensive mounting hardware.

The Volkswagen XL1 made its U.S. debut at the Chattanooga Convention Center today.

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The Volkswagen XL1, the most fuel-efficient and aerodynamic production car in the world, made its U.S. debut at the 23rd Annual Society of Environmental Journalists (SEJ) Conference at the Chattanooga Convention Center today. The XL1 offers an estimated European combined fuel consumption rating of 261 mpg (more than 200 mpg estimated in the U.S. cycle) and can cover up to 32 miles as a zero-emissions vehicle in all-electric mode.
“The XL1 offers a glimpse into Volkswagen’s present and future eco-mobility capabilities, and highlights the ultimate successes of ‘Thinking Blue,’” said Oliver Schmidt, General Manager of the Engineering and Environmental Office (EEO), Volkswagen Group of America, Inc. “Volkswagen is proud to debut this ultra-fuel-efficient vehicle before the Society of Environmental Journalists, a group that shares in our commitment to environmental stewardship.”
In addition to the XL1 display, Volkswagen’s participation in the SEJ Conference included a tour of its LEED® Platinum-certified Chattanooga manufacturing plant and solar park; test-drives in its line of eco-friendly cars, such as the e-Golf, Passat TDI Clean Diesel and Jetta Hybrid; and a bird-watching expedition on Volkswagen Chattanooga’s sanctuary grounds.

Leading Utilities Recognize the Need for Solar Energy as Older Nuclear Plants Pass Their Economic Viability

CEOs from opposite sides of the country also spent much time discussing the increasing role of renewable energy and distributed generation.

California is known for having the nation’s most ambitious renewable energy mandate while North Carolina, where Duke is based, also has a growing solar energy presence.
Edison CEO Ted Craver said electric utilities would be mistaken to dismiss distributed generation as merely a “fringe” business in the future. The Edison chief said his company initially started in the field by supplying big solar arrays for “big box” stores.

“A lot of this is really experimental,” Craver said. Utility subsidiary Southern California Edison (SCE) used to rely on industrial customers for one-third of its load but that is now probably closer to 10 percent, Craver said.

While some argue that California policy has been inhospitable to heavy industry, it’s important to realize that manufacturers are looking to generate more of their own power, Craver said.
The utility, SCE, is also investing more in the transmission side of its business to accommodate the growing role of distributed generation in California.

Duke is developing a variety of resources in its service territories — including new combined-cycle and peaking units in Florida — to help compensate for retirement of the Crystal River nuclear plant and potential coal units retirements as well. California is known for having the nation’s most ambitious renewable energy mandate while North Carolina, where Duke is based, also has a growing solar energy presence.

Getting Your Money’s Worth Out of Energy Efficiency Webinar

You know implementing energy efficiency projects can produce cash flow and grow your business, but did you know these same energy efficiency projects are also eligible for federal tax incentives?

Event: Webinar: Getting Your Money’s Worth Out of Energy Efficiency
Date: September 30, 2013
Time: 1:00–2:00 EDT / 12:00–1:00 CDT
Admission: Free


Please join the Tennessee Energy Education Initiative for a webinar on monetizing energy efficiency projects and taking advantage of tax incentives. This is valuable knowledge for CFOs, financial advisors, and other key decision makers in organizations seeking to improve bottom lines through energy efficiency initiatives.

Here’s what you can expect:
• Monetizing Energy Solutions: The Road to Funding
Christopher Russell, Visiting Fellow, American Council for an Energy-Efficient Economy; Principal, Energy Pathfinder Management Consulting LLC.
• Guide to Tax Incentives for Commercial Business
CJ Aberin, CCSP, shareholder at KBKG, a specialty tax firm focused on securing energy tax incentives, will summarize the benefits of the Energy-Efficient Commercial Buildings (179D) federal tax deduction and other related tax strategies, explain the process, and share information about ideal candidates and eligible projects so you know how to get started.

http://tnenergy.org/event/getting-your-moneys-worth-out-of-energy-efficiency/

Marilyn Brown Sworn In as TVA Board Member

KNOXVILLE, Tenn. ― Marilyn Brown, of Atlanta, Ga., on Friday rejoined the Tennessee Valley Authority board of directors, taking the oath of office in a ceremony in Knoxville.

Brown was sworn in by Chief U.S. District Judge Thomas A. Varlan during a ceremony at the Howard H. Baker Jr. U.S. Courthouse in downtown Knoxville.

Brown helped to launch and chaired the board of directors of the Southeast Energy Efficiency Alliance. She also served on the boards of directors of the American Council for an Energy-Efficient Economy and the Alliance to Save Energy and was a member of the National Commission on Energy Policy for many years.

TVA Board Appointment

DOW Solar Powerhouse Shingle

On November 2nd, TSEA will hold the 4th annual Solar Tour. One of the stops on the tour will be with Twin Willows Development off of Hardin Valley Rd, near Buttermilk Dr. The first house, installed with DOW’s solar shingles, will be explained by subdivision developer Adam Hutsell, and his installer, Jim Laborde. This will be a first for TVA, in which a developer will be installing solar as part of the overall construction of the homes at no extra cost. In addition to the solar, the energy saving features of the construction and choice of appliances tend to save energy, reducing the cost of monthly expenses. The tour will begin with an introductory talk at 8:30, at the Public Meeting room at Knoxville Transit Center on Church St(across the street to the Civic Center). We have limited seating, so arrive as soon as possible to ensure a place on our bus!

TVA launches community solar initiative

The Tennessee Valley Authority has recently developed a community solar initiative designed to add at least 500 kilowatts of solar energy for their utility and government properties.

TVA issued a request for proposals (RFP) on Aug. 15 to identify community members interested in participating in this Solar Aggregated Value and Education (SAVE) initiative.

This initiative will also provide an opportunity to test the market for the upfront purchase of Renewable Energy Credits, or RECS, that are directly tied to generation from a local solar facility.  RECs represent the property rights to the environmental, social and non-power qualities of renewable electricity generation. RECs are sometimes purchased to meet legislative or regulatory mandates, meet internal goals, support environmental stewardship and other objectives.

The RFP will be handled through a two-stage application process.  The submission deadline for the concept paper proposal will be in November 2013, with the full application due in February 2014 for those selected past the first stage. Final selection of participants is planned for April 2014.

The  SAVE initiative is the first of 11 projects TVA is launching as part of  a Clean Air Agreement with the U.S. Environmental Protection Agency that support TVA’s vision for low-cost and cleaner energy.

The innovative approach tries to provide renewable credits and tax breaks for industry, the chance for residents to promote more solar power and the opportunity for TVA to get more renewable power to comply with a 2-year-old settlement with the U.S. Environmental Protection Agency.

TVA began soliciting proposals under the new Solar Aggregated Value and Education (SAVE) program last month. Program director Neil Placer said TVA expects to have one or two solar projects added to its grid by 2015.

Original article here

U.S. PV Installations by Market Segment, Q1 2010-Q2 2013

Net Metering Around the Country: Need I Say More?

Looks the few is us!

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.

original article

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.