Integrating solar cells into building materials could make solar power more attractive to homeowners.
Seamless solar: The solar system shown here (darker panels) integrates thin-film solar modules directly into a metal roof. Such systems offer cost savings in labor and materials and blend well with buildings' designs.
Credit: EnergyPeak
In an effort to promote the adoption of solar technology, United Solar Ovonic of Auburn Hills, MI, has teamed with a major roofing company to create a metal roof system that generates electricity from sunlight. The partnership offers seven different prefabricated systems, ranging in capacity from 3 to 120 kilowatts. Tests show that the solar roof panels are rugged and can withstand winds in excess of 160 miles per hour.
SunEdison has activated a 1.2-megawatt solar photovoltaic (PV) energy system for Progress Energy Carolinas. Sited on 10 acres of land at Progress Energy's Sutton Plant near Wilmington, the 1.2-MW ground mount system is the largest in North Carolina.
SunEdison financed, built, and operates the PV solar energy system. Progress Energy purchases electricity from SunEdison under a 20-year solar energy purchase agreement. Progress Energy also purchases renewable energy credits from SunEdison.
Officially grid-connected and set to work this week in Germany is a new wind tower from ATS. The novel tower construction allows very high hub heights that may increase a turbine's yield by 20% or more. With its hub height of 133 meters (436 feet), the system has an overall height of 180 meters (590 feet).
"This is a great day for wind energy." said Frans Brughuis, Managing Director of the tower construction specialist Advanced Tower Systems (ATS). "Now the pilot project can demonstrate the high cost-effectiveness and efficiency of the ATS concept," The system, one of the largest wind energy systems with hybrid tower in the world, is installed at Germany's Windtest test field at Grevenbroich, near Cologne.
What do you do if you build a wind farm smack dab in the middle of a major bird migration route, and want to avert the anger of conservationists? Put up a radar system that's designed to shut down the entire thing when it detects a mass of birds on the way. That's what's been done at the 202 MW Peñascal Wind Farm in Texas:
System Detects Birds Approaching Four Miles Away
The system uses radar originally developed for NASA and the US Air Force to detect birds as far as four miles away, The Guardian reports. When it picks up the approaching birds, it analyzes the existing weather conditions and determines in real time whether those birds are in danger of flying into the blades. The system then automatically restarts the turbines when the birds have passed.
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Research by TU Delft proves that Dutch power stations are able to cope at any time in the future with variations in demand for electricity and supply of wind power, as long as use is made of up-to-date wind forecasts. PhD candidate Bart Ummels also demonstrates that there is no need for energy storage facilities. Ummels will receive his PhD on this topic on Thursday 26 February.
Wind is variable and can only partially be predicted. The large-scale use of wind power in the electricity system is therefore tricky. PhD candidate Bart Ummels MSc. investigated the consequences of using a substantial amount of wind power within the Dutch electricity system. He used simulation models, such as those developed by Dutch transmission system operator TenneT, to pinpoint potential problems (and solutions).
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Amid growing concerns over the preservation of the environment, the quest for energy efficient and greener technologies is intensifying in Europe, especially after the signing of the Kyoto Protocol. Green initiatives have encouraged the gravitation towards environmentally friendly technologies such as flywheel UPS systems. The European Commission energy efficiency action plan has also helped drive the uptake of flywheel UPS systems.
New analysis from Frost & Sullivan (http://www.powersupplies.frost.com), European Flywheel UPS Markets, finds that market earned revenues of over €25.4 million in 2007 and estimates this to reach €58 million in 2014.
"Although the technology has been in existence for a long time, it has seen widespread acceptance and increased uptake only over the past three or four years," says Frost & Sullivan programme manager Malavika Tohani. "Flywheel UPS systems use kinetic energy, eliminating harmful emissions and disposal issues and reducing the impact on the environment."
A Winding Farm Electrical Systems Designer is responsible for designing, developing, testing, implementing, monitoring, and maintaining the electrical systems in a wind farm.
An ICE (Instrumentation, Control, and Electrical) Systems Technician installs, maintains, and repairs the more advanced electronics in an alternate power system.
olar domestic hot-water systems don't grab as many headlines, probably because they're not considered as high-tech as their solar PV cousins, where science is pushing the boundaries of sunlight-to-electricity conversion. I'm always surprised that residential solar thermal systems don't get much attention in the United States, particularly in the south where many homes have swimming pools (that need heating) and where the sun shines warm all year, making the payback dramatically better than PV. In Canada, where the conditions are less ideal, we seem for some strange reason to have a greater appreciation for rooftop solar thermal systems, and indeed, have many startups, such as EnerWorks, and academics spending considerable time improving on the technology.
The solar hot water systems need an appliance which will make the process of heat transfer simple and faster. Helio Pack heat transfer system is such an appliance which ensures maximum heat transfer in a solar hot water system.
Our current utility system is woefully outdated and painfully unprepared for major outages. Even minor glitches in the current operating system can mean major headaches for the customers who rely on these companies for heat and lights and for the companies themselves.
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Nextek Power Systems, Inc. is a pioneer in DC power networks for buildings. The Nextek Direct Coupling power distribution platform delivers superior efficiency, flexibility, and reliability to interior electrical circuits and on-site power generation. Take a look @ www.nextekpower.com/case-studies/direct-coupling-dc-micro...
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