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Description: This Fwicki was created to provide up to the minute news and information on solar power and solar power systems. The technology available today provides mankind with the ability to produce solar power, solar cars, solar homes, and sun-powered devices using the miracle technology of photovoltaics. Bookmark this Fwicki to get up to the minute news and information on solar power systems and solar power technology.
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US company aims to store energy in air ...
Tue, 09 Feb 2010 08:54:23 GMT     Digg! Bookmark This Page

A U.S. company plans to dig a series of underground caverns that it hopes to one day fill with compressed air, releasing it to generate electricity by turning a turbine and solving one of the most vexing problems facing the clean-energy industry - how to store power.

RSS Management
Tue, 09 Feb 2010 14:29:52 GMT     Digg! Bookmark This Page
Michigan researchers develop worlda s smallest solar-powered sensor system...
Tue, 09 Feb 2010 08:18:09 GMT     Digg! Bookmark This Page

Eco Factor: Millimeter-scale sensor harvests solar energy for nearly perpetual operation.

Northwest briefly: Washougal man?s remains found in Haiti, family ... - Everett Herald...
Tue, 09 Feb 2010 08:00:00 GMT     Digg! Bookmark This Page

VANCOUVER, Wash. ? In a Facebook announcement, the family of a 57-year-old Washougal man missing since Haiti?s Jan. 12 earthquake says his remains have been identified in the rubble of the collapsed Hotel Montana in Port-au-Prince. Walt Ratterman ...

Areva acquires Ausra, a Silicon Valley solar power plant start-up - Los Angeles Times...
Tue, 09 Feb 2010 08:00:00 GMT     Digg! Bookmark This Page

French nuclear energy giant Areva has jumped into the U.S. renewable energy market with the acquisition of Ausra Inc., a Mountain View, Calif., solar power plant start-up. Terms of the deal were not disclosed, but Areva executive Anil Srivastava said ...

Petra Solar Gets $40 Million for Pole Mounted Solar and Smart Grid Systems...
Tue, 09 Feb 2010 08:00:00 GMT     Digg! Bookmark This Page

Petra Solar, Inc. , a developer of pole mounted smart grid and solar systems for utilities announced that it has raised $40 million in funding for expansion.

Remembering Walt Ratterman
Tue, 09 Feb 2010 07:53:03 GMT     Digg! Bookmark This Page

Late yesterday, the body of an extraordinary man was identified in the rubble of the Hotel Montana in Port-au-Prince. Walt Ratterman had been in Haiti doing what he did best: providing humanitarian assistance to those least able to help themselves.

The magazine rack - TMCnet
Tue, 09 Feb 2010 07:53:00 GMT     Digg! Bookmark This Page

By slashing electricity use and then adding solar power, they now get around $46 a month for the extra electricity they send to the power grid. They figure their solar system will pay for itself in about nine years, but they emphasized that they cut ...

Schwarzenegger's "Hinden" Highway to be showcased in Whistler
Tue, 09 Feb 2010 07:45:42 GMT     Digg! Bookmark This Page

Welcome to Word of the Rings, a new Rabble.ca blog that aims to serve as a one-stop examination at whata TMs happening behind the scenes in the lead up to the 2010 Winter Olympics in Vancouver and Whistler.

White skips primary talk and guns straight for Perry
Tue, 09 Feb 2010 07:45:00 GMT     Digg! Bookmark This Page

BUD KENNEDY Houston Democrat Bill White launched his campaign against Gov. Rick Perry on Monday night.Meanwhile, fellow Democrat Farouk Shami launched his campaign against himself.Minutes into the only debate of the top contenders for the Democratic gubernatorial nomination, White zeroed in on his true target: Perry.Answering a question about ...

The Heretics: Anthony Watts
Tue, 09 Feb 2010 07:42:54 GMT     Digg! Bookmark This Page

Posted by Rich Trzupek on Feb 9th, 2010 and filed under FrontPage . You can follow any responses to this entry through the RSS 2.0 . You can leave a response or trackback to this entry Given the dogmatic fervor of global warming proponents, and their intolerance of skeptics who dare to question the latest commandment in the green scripture, it is ...

Much ?clean? growth possible in developing world with existing ... - UNCTAD...
Tue, 09 Feb 2010 07:39:00 GMT     Digg! Bookmark This Page

Huge gains can be made by focusing on energy efficiency, sustainable agriculture, and off-grid renewable power, study says; economic, food, and climate crises provide opportunity for change Geneva, 8 February 2010 - The stress of the global financial ...

Texas Governor Race: Democratic debate centers on job creation, budget - El Paso Times...
Tue, 09 Feb 2010 07:10:00 GMT     Digg! Bookmark This Page

FORT WORTH -- It was more like a conversation. Former Houston Mayor Bill White and hair-care magnate Farouk Shami squared off in a debate Monday in Fort Worth that focused on job creation, balancing the state's budget, renewable energy and border ...

U.S. company aims to store energy in air
Tue, 09 Feb 2010 07:04:47 GMT     Digg! Bookmark This Page

A U.S. company plans to dig a series of underground caverns that it hopes to one day fill with compressed air, releasing it to generate electricity by turning a turbine and solving one of the most vexing problems facing the clean-energy industry -- how to store power.

Officials: Entrepreneurial opportunities in Ariz. still abundant downtown...
Tue, 09 Feb 2010 06:52:26 GMT     Digg! Bookmark This Page

Diversity of industry, opportunities provided by ASU and a wide opening for entrepreneurship make up some of the best reasons for recent grads to stay in Arizona, one ASU official said.

USDA opportunities for NM projects - Deming Headlight
Tue, 09 Feb 2010 06:49:00 GMT     Digg! Bookmark This Page

Before us lies an extraordinary opportunity, through the American Recovery and Reinvestment Act of 2009 (also known as the Stimulus), to make immediate and necessary investments in our rural communities. The United States Department of Agriculture ...

Foursquare Signs a Deal With Zagat
Tue, 09 Feb 2010 06:48:27 GMT     Digg! Bookmark This Page

Foursquare, the location-based mobile application that is capturing the fancy of hip urbanites , is a fun bar game that lets users compete for points and badges when they go out at night.

Foursquare Signs a Deal With Zagat
Tue, 09 Feb 2010 06:48:27 GMT     Digg! Bookmark This Page

Foursquare, the location-based mobile application that is capturing the fancy of hip urbanites , is a fun bar game that lets users compete for points and badges when they go out at night.

Pricechopper: Live Like Scarlett: Johansson Lists Her Outpost Estates Home...
Tue, 09 Feb 2010 06:38:10 GMT     Digg! Bookmark This Page

Monday, February 8, 2010, by Neal Broverman Scarlett Johansson is selling her Outpost Estates mansion now and taking a BIG hit to do so.

How scientists reach consensus
Tue, 09 Feb 2010 06:20:52 GMT     Digg! Bookmark This Page

I would like to respond to a statement in a Jan. 26 letter to the editor about climate change.

Experts evaluate details President Obama's jobs plan
Tue, 09 Feb 2010 06:00:00 GMT     Digg! Bookmark This Page

The Detroit News asked three experts to evaluate whether key elements of the president's jobs agenda would help businesses create more jobs in troubled Michigan: Rob Fowler, president of the Small Business Association of Michigan, Mark Gaffney, president of the Michigan State AFL-CIO, and Charles Ballard, an economics professor at Michigan State University.

Utah company is aiming to store energy in air - Omaha World-Herald...
Tue, 09 Feb 2010 05:59:00 GMT     Digg! Bookmark This Page

SALT LAKE CITY (AP) ? A Utah company plans to dig a series of underground caverns that it hopes to one day fill with compressed air, releasing it to generate electricity by turning a turbine and solving one of the most vexing problems facing the ...

Bits: Job Postings Hint at Amazona s Plans for the Kindle
Tue, 09 Feb 2010 05:41:17 GMT     Digg! Bookmark This Page

Jeff Bezos holding a Kindle DX. Last week, Brad Stone and I reported that Amazon had acquired the New York based multitouch screen company Touchco to integrate into Lab126, the Kindle hardware division.

Gromer Jeffers Jr.: Shami's big promises still lacking in details
Tue, 09 Feb 2010 05:28:21 GMT     Digg! Bookmark This Page

The leading Democratic contenders for governor were in near lock step on most issues facing Texas, particularly support for abortion rights, disdain for a voter identification law, and the need to grow the economy.

What would Obama do? Tips for president's Aussie visit
Tue, 09 Feb 2010 04:29:28 GMT     Digg! Bookmark This Page

The Obamas are coming to Australia. How exciting. Kevin Rudd was spotted doing cartwheels on the Kirribilli House lawn last week when word of the visit was made official.

Martin LeFevre: Wellsprings Of Insight
Tue, 09 Feb 2010 03:09:04 GMT     Digg! Bookmark This Page

Indigenous people felt that the rocks and rivers, clouds and creeks were alive with spirit.

How Climate-Change Fanatics Corrupted Science
Tue, 09 Feb 2010 03:00:19 GMT     Digg! Bookmark This Page

Quick, name the most distrusted occupations. Trial lawyers? Pretty skuzzy, as witness the disgraced John Edwards, kept from the vice presidency in 2004 by the electoral votes of Ohio.

Available Soon at a Barnes & Noble Near You: The Nook
Tue, 09 Feb 2010 02:13:55 GMT     Digg! Bookmark This Page

In addition to the online language learning programs discussed in a recent Times article, here are several more that may be of interest.

Bay Biz Buzz: France's Areva buys Silicon Valley solar startup
Tue, 09 Feb 2010 02:13:24 GMT     Digg! Bookmark This Page

French government-owned Areva, a leading maker of nuclear reactors, announced Monday that it is acquiring Ausra, a Mountain View concentrated solar thermal startup backed by several Silicon Valley venture capitalists.

US Senator Pushes For 10 Million More Solar Rooftops - Energy Matters...
Tue, 09 Feb 2010 00:52:42 GMT     Digg! Bookmark This Page


Energy Matters

US Senator Pushes For 10 Million More Solar Rooftops
Energy Matters
If the legislation is introduced, it would provide rebates covering up to half the cost of the 10 million solar power systems and 200000 solar hot water ...
Sanders introduces 10 Million Solar Roofs, 10 Million Gallons of Solar Hot ...vtdigger.org
Gillibrand Introduces Solar Energy LegislationWBGH

all 4 news articles »


Atlantic Wind and Solar Inc. Stock Dividend Paid - CNNMoney.com (press release)...
Mon, 08 Feb 2010 21:06:07 GMT     Digg! Bookmark This Page


Atlantic Wind and Solar Inc. Stock Dividend Paid
CNNMoney.com (press release)
LOIs covering 20 additional rooftop projects and encompassing an additional 6MW of the Company's Solar Energy systems have been received by AWSL or its ...

and more »


Tracking the Sun
Mon, 08 Feb 2010 20:41:18 GMT     Digg! Bookmark This Page

A look at how solar trackers are exploiting motion control and automation technology to boost energy production Al Presher, Contributing Editor -- Design News, February 8, 2010 A new generation of Sun tracking systems are playing a key role in the emergence of solar power.

EcoTrack 11: Lake Erie Energy committed to being green - WTOL.com
Mon, 08 Feb 2010 20:36:00 GMT     Digg! Bookmark This Page


BigPond News

EcoTrack 11: Lake Erie Energy committed to being green
WTOL.com
"We decided we were going to focus on wind and solar power systems, being that they are electrical in nature so it kind of fit our electrical contracting ...
Colorado U Adds Solar to Three BuildingsCampus Technology
Solar Power Rundown for Monday, February 8GetSolar.com (blog)
Solar panel project moves forward in WillingborophillyBurbs.com
Mount Union College Athletics -Huffington Post (blog) -EC&M
all 27 news articles »


GreenVolts hires CFO
Mon, 08 Feb 2010 20:33:18 GMT     Digg! Bookmark This Page

Solar power company GreenVolts Inc. hired Uday Bellary as its chief financial officer.

Areva buys solar-thermal start-up Ausra - CNET
Mon, 08 Feb 2010 17:45:24 GMT     Digg! Bookmark This Page


Energy Matters

Areva buys solar-thermal start-up Ausra
CNET
Because concentrating solar power systems produce steam to make electricity, Areva said that the technology is more closely aligned with its nuclear ...
Nuclear Power Giant Buys Solar FirmNew York Times (blog)
Areva targets solar power with US moveFinancial Times
Bay Biz Buzz: France's Areva buys Silicon Valley solar startupAlameda Times-Star
Cleantech Group -Earth2Tech (blog) -Energy Matters
all 64 news articles »


'Off grid' brings power to the people
Mon, 08 Feb 2010 17:26:57 GMT     Digg! Bookmark This Page

"Research shows that a successful incentive mechanism set at the right level, like the FIT scheme, could deliver up to six percent of the UK domestic electricity demand," Jemma Robinson, Renewable Energy Association, told CNN.

Argan, Inc.'s Wholly Owned Subsidiary Gemma Power Systems Announces New President - MarketWatch...
Mon, 08 Feb 2010 17:21:53 GMT     Digg! Bookmark This Page


Argan, Inc.'s Wholly Owned Subsidiary Gemma Power Systems Announces New President
MarketWatch
In his previous role, Mr. Martin had the opportunity to work with Gemma Power Systems on several combined cycle projects. He holds a Bachelor of Science ...

and more »


HNU Energy and International Battery Team for Solar and Energy...
Mon, 08 Feb 2010 17:07:13 GMT     Digg! Bookmark This Page

International Battery , a U.S. manufacturer and developer of large-format lithium-ion rechargeable batteries, today announced they have recently teamed with HNU Energy to participate in a solar power generation and energy storage project in Maui, Hawaii.

Inc. 5000 Applicant of the Week: GreenLogic Energy
Mon, 08 Feb 2010 16:09:04 GMT     Digg! Bookmark This Page

Founded in 2005, GreenLogic works with homes, businesses and municipalities from New York City to the tip of Long Island to install and maintain the best alternative energy solutions.

Evolution Solar Establishes Bermuda Subsidiary
Mon, 08 Feb 2010 16:02:22 GMT     Digg! Bookmark This Page

Evolution Solar Corp. announced today that Company Management initiated the process of formally establishing a new subsidiary in Bermuda, a step necessary for meeting contractual eligibility requirements under Bermuda law.

TVA Chooses SmartSync to Manage Incentive Program
Mon, 08 Feb 2010 14:55:00 GMT     Digg! Bookmark This Page

The Tennessee Valley Authority , the nationa s largest public power company, has selected SmartSynch, Inc.

Climate Generation: A History of Energy Action
Mon, 08 Feb 2010 00:07:02 GMT     Digg! Bookmark This Page

As a tribute to the inspiring Climate Generation series, I thought I would re-publish this early history of Energy Action, originally written in December 2005.

Reading the clean energy 'bubble'
Mon, 08 Feb 2010 22:52:12 GMT     Digg! Bookmark This Page

For ten points, can you name the group of companies in the energy industry that are expected to have the greatest growth potential? You may be inclined to slam your fist on the answer buzzer and shout out "wind!" Given a second chance you might hesitate - " then blurt out, "Sorry, I meant solar!" The stock market, that complex electronic organism ...

In Utah, company aims to store energy in air
Mon, 08 Feb 2010 01:09:18 GMT     Digg! Bookmark This Page

A Utah company plans to dig a series of underground caverns that it hopes to one day fill with compressed air, releasing it to generate electricity by turning a turbine and solving one of the most vexing problems facing the clean-energy industry - how to store power.

Borrego Solar Systems Appoints Bill Bush Chief Financial Officer on the Heels ... - Business Wire (press release)...
Mon, 08 Feb 2010 13:04:11 GMT     Digg! Bookmark This Page


Borrego Solar Systems Appoints Bill Bush Chief Financial Officer on the Heels ...
Business Wire (press release)
?In the past year, we've successfully completed a record sales quarter, introduced Borrego Solar's integrated power-purchase agreement program, ...
Borrego Solar Names CFOsocalTech.com

all 8 news articles »


SunPower Names Key Equipment Finance as U.S. Equipment Finance Partner - PR Newswire (press release)...
Mon, 08 Feb 2010 13:02:45 GMT     Digg! Bookmark This Page


SunPower Names Key Equipment Finance as U.S. Equipment Finance Partner
PR Newswire (press release)
SunPower has more than 550 large public and commercial solar power systems installed or under contract, representing more than 500 megawatts. ...
Key Equipment Finance Announces Program To Fund SunPower (SPWRA) Commercial ...Green Stocks Central

all 15 news articles »


The climate change: The willpower fallacy
Sun, 07 Feb 2010 19:57:13 GMT     Digg! Bookmark This Page

Bjorn Lomborg There is a dangerous misperception that willpower and political agreement are the only missing ingredients needed to combat global warming.

The character of power output from utility-scale photovoltaic systems...
Sun, 07 Feb 2010 15:19:04 GMT     Digg! Bookmark This Page

Search all the public and authenticated articles in CiteULike. Enter a search phrase.

Energy Storage Project In Utah Seeks To Trap Air In Giant Underground Caves...
Sun, 07 Feb 2010 22:04:26 GMT     Digg! Bookmark This Page

A Utah company plans to dig a series of underground caverns that it hopes to one day fill with compressed air, releasing it to generate electricity by turning a turbine and solving one of the most vexing problems facing the clean-energy industry how to store power.


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Solar Cell:

 
A solar cell (or a "photovoltaic" cell) is a device that converts photons from the sun (solar light) into electricity. In general, a solar cell that includes both solar and non solar sources of light (such as photons from incandescent bulbs) is termed a photovoltaic cell. Fundamentally, the device needs to fulfill only two functions: photo generation of charge carriers (electrons and holes) in a light-absorbing material, and separation of the charge carriers to a conductive contact that will transmit the electricity. This conversion is called the photovoltaic effect, and the field of research related to solar cells is known as photovoltaics.
Solar Cells - Panel Array

Solar cells have many applications. Historically solar cells have been used in situations where electrical power from the grid is unavailable, such as in remote area power systems, Earth orbiting satellites, consumer systems, e.g. handheld calculators or wrist watches, remote radiotelephones and water pumping applications. Recently solar cells are particularly used in assemblies of solar modules (photovoltaic arrays) connected to the electricity grid through an inverter, often in combination with a net metering arrangement. Solar cells are regarded as one of the key technologies towards a sustainable energy supply.

 

Solar Panels - Solar Panel Arrays:

 
The term solar panel is best applied to a flat solar thermal collector, such as a solar hot water or air panel used to heat water, air, or otherwise collect solar thermal energy. But 'solar panel' may also refer to a photovoltaic module which is an assembly of solar cells used to generate electricity. In all cases, the panels are typically flat, and are available in various heights and widths.

An array is an assembly of solar-thermal panels or photovoltaic (PV) modules; the panels can be connected either in parallel or series depending upon the design objective. Solar panels typically find use in residential, commercial, institutional, and light industrial applications.

Solar-thermal panels saw widespread use in Florida and California until the 1920's when tank-type water heaters replaced them. A thriving manufacturing business died seemingly overnight. However, solar-thermal panels are still in production, and are common in portions of the world where energy costs, and solar energy availability, are high.

Recently there has been a surge toward large scale production of PV modules. In parts of the world with significantly high insolation levels, PV output and their economics are enhanced. PV modules are the primary component of most small-scale solar-electric power generating facilities. Larger facilities, such as solar power plants typically contain an array of reflectors (concentrators), a receiver, and a thermodynamic power cycle, and thus use solar-thermal rather than PV.

 
Solar Panel Array
 

Solar Car:

 

A solar car is an electric vehicle powered by solar energy obtained from solar panels on the surface of the car. Photovoltaic (PV) cells convert the sun's energy directly into electrical energy. However, solar cars are not currently a practical form of transportation. Although they can operate for limited distances without the sun, the solar cells are generally very fragile.

A Solar Car

Using solar car technology, development teams have focused their efforts toward optimizing the functionality of the vehicle, with little concern for passenger comfort. Most solar cars have only enough room for one or two people. Solar cars compete in races (often called rayces) such as the World Solar Challenge and the American Solar Challenge. These events are often sponsored by government agencies, such as the United States Department of Energy, who are keen to promote the development of alternative energy technology (such as solar cells). Such challenges are often entered by universities to develop their students' engineering and technological skills, but many professional teams have entered competitions as well, including teams from GM and Honda.

 

Solar Power Classifications:

Direct or Indirect

In general, direct solar power involves a single transformation of sunlight which results in a useable form of energy.

* Sunlight hits a photovoltaic cell creating electricity.
* Sunlight warms a thermal mass.
* Sunlight strikes a solar sail on a space craft and is converted directly into a force on the sail which causes motion of the craft.
* Sunlight strikes a light mill and causes the vanes to rotate as mechanical energy, little practical application has yet been found for this effect.
* In a direct solar water heater the water heated in the collector is used in the domestic water system.
* Sunlight which is not reflected provides direct lighting.

In general, indirect solar power involves multiple transformations of sunlight which result in a useable form of energy.

* Vegetation uses photosynthesis to convert solar energy to chemical energy. The resulting biomass may be burned directly to produce heat and electricity or processed into ethanol, methane, hydrogen and other biofuels.
* Hydroelectric dams and wind turbines are powered by solar energy through its interaction with the Earth's atmosphere and the resulting weather phenomena.
* Ocean thermal energy production uses the thermal gradients present across ocean depths to generate power. These temperature differences are produced by sunlight.
* Fossil fuels are ultimately derived from solar energy captured by vegetation in the geological past.
* In an indirect solar water heater the fluid heated in the collector transfers its heat through a heat exchanger to a separate domestic water system.
* Sunlight reflected off a ceiling or other surface provides indirect lighting.

Passive or Active

Passive solar systems use non-mechanical techniques of capturing, converting and distributing sunlight into useable forms of energy for heating, lighting or ventilation. These techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air and referencing the position of a building to the sun.

* Passive solar water heaters use a thermosiphon to circulate fluid.
* A Trombe wall circulates air by natural circulation and acts as a thermal mass which absorbs heat during the day and radiates heat at night.
* Clerestory windows, light shelves, skylights and light tubes can be used among other daylighting techniques to illuminate a building's interior.
* Passive solar water distillers may use capillary action to pump water.

Active solar systems use electrical and mechanical components such as photovoltaic panels, pumps and fans to process sunlight into useable forms of energy.

Concentrating or Non-Concentrating

Concentrating solar power (CSP) systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam capable of producing high temperatures and correspondingly high thermodynamic efficiencies. Concentrating solar is generally associated with solar thermal applications but concentrating photovoltaic (CPV) applications exist as well and these technologies also exhibit improved efficiencies. CSP systems require direct insolation to operate properly.

Concentrating solar power systems vary in the way they track the sun and focus light.

* Line focus/Single-axis
* A solar trough consists of a linear parabolic reflector which concentrates light on a receiver positioned along the reflector's focal line. These systems use single-axis tracking to follow the sun. A working fluid (oil, water) flows through the receiver and is heated up to 400 °C before transferring its heat to a distillation or power generation system. Trough systems are the most developed of the CSP technologies. The Solar Electric Generating System (SEGS) plants in California and Plataforma Solar de Almería's SSPS-DCS plant in Spain are representatives of this technology.
* Point focus/Dual-axis
A power tower consists of an array of flat reflectors (heliostats) which concentrate light on a central receiver located on a tower. These systems use dual-axis tracking to follow the sun. A working fluid (air, water, molten salt) flows through the receiver where it is heated up to 1000 °C before transferring its heat to a power generation or energy storage system. Power towers are less advanced than trough systems but they offer higher efficiency and energy storage capability. The Solar Two in Daggett, California and the Planta Solar 10 (PS10) in Sanlucar la Mayor, Spain are representatives of this technology.
A parabolic dish or dish/engine system consists of a stand-alone parabolic reflector which concentrates light on a receiver positioned at the reflector's focal point. These systems use dual-axis tracking to follow the sun. A working fluid (hydrogen, helium, air, water) flows through the receiver where it is heated up to 1500 °C before transferring its heat to a sterling engine for power generation. Parabolic dish systems display the highest solar-to-electric efficiency among CSP technologies and their modular nature offers scalability. The Stirling Energy Systems (SES) and Science Applications International Corporation (SAIC) dishes at UNLV and the Big Dish in Canberra, Australia are representatives of this technology.

Non-concentrating photovoltaic and solar thermal systems do not concentrate sunlight. While the maximum attainable temperatures (200 °C) and thermodynamic efficiencies are lower, these systems offer simplicity of design a have the ability to effectively utilize diffuse insolation. Flat-plate thermal and photovoltaic panels are representatives of this technology.

 
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