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The price of energy in Australia has risen substantially in recent years, and it doesn’t look like it will be going down anytime soon. This is perhaps one major reason why more homeowners are electing to have their own solar photovoltaic system – a system which relies on a thoroughly renewable source: the sun. If you’re in Australia and are trying to look into installing your own solar energy system, what do you need to know? The concept may be simple, but there are some facts and factors you need to know as well. Here’s a look at what you need to know about installing a solar energy system in Australia.

How a solar photovoltaic system really works

There are some materials which can generate electricity as they are exposed to light; this is referred to as the ‘photovoltaic effect’. This is how solar panels essentially work. Solar panels make use of the photovoltaic effect in order to convert the sun’s energy into DC (direct current) electric energy. Once it’s converted into DC, an inverter will change it into AC (alternating current) so it can be used in the electrical circuitry of a home. If your system produces additional electricity, this can be sold back to the grid, where you will also be paid a feed-in tariff. Alternatively, you can store this extra energy in a system for storage, so you can make use of the energy later on.

Solar panel installations work well when they face north, as this is when they are pointed straight at the sun. Installations will also work well when they are not shaded or blocked and are set at an optimum angle. Your installation’s efficiency will also be affected by the weather as well as where you reside. 

The efficiency of your solar panels

There are different kinds of solar panels: monocrystalline solar panels, IBC or interdigitated back contact solar cells, and thin film panels. Monocrystalline solar panels are usually colouredblack, and they are seen as more efficient than multi-crystalline models, which often come in a dark blue colour. IBCs, on the other hand (also referred to as rear-contactcells), are a variationon typical solar cells, and they can also have high efficiency. Thin film cells are comprised of a slim layer of PV material which is set on a base metal or glass plate. These cells are not as common since the technology behind it is still evolving, but it may be more flexible in the future.

You want to consider the efficiency of your solar panels; better efficiency results in more energy production from a given area. Some solar panels are better at tolerating temperature, so be mindful of this when choosing your panels. The installation of the panels is also crucial; panels need to be set up in a way that will allow air to flow under the panels, so they are cooler. A good Brisbane solar installer such as Pedleys Solar should be able to explain everything you need to know about the installation of solar in Brisbane and the right kinds of solar panels for your needs. One more thing: make sure that your system is installed by an installer which is accredited by the CEC, or the Clean Energy Council.

 



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The city didn’t make a big deal about it yet “to make sure installation went well.”

The Strawberry Mansion bus shelter features two solar panels, which power the overhead lights and the backlit advertisements

Michaela Winberg / Billy Penn

SEPTA bus stops are in the middle of a makeover.

Last week, officials from the Office of Transportation and Infrastructure Systems installed Philly’s first ever solar-powered bus shelter. The brand new structure went up at 29th and Ridge, where there was previously no shelter at all.

The move toward solar is one of many changes to the structures that meet bus riders. In 2015, OTIS announced that all 300 of the city’s existing bus shelters were set to be replaced with new ones. On top of that, the city would install 300 additional shelters throughout Philadelphia.

That’s 600 total bus shelters in the city, all in accordance with the new, sleek design — a rectangular structure with advertisements on the walls and a glass ceiling. The old ones were either green and rectangular or dome-shaped.

If it works well, officials say they’ll incorporate solar power elsewhere. Solar energy has been proven more environmentally sustainable, conserving resources and reducing the costs associated with electricity.

Installation of each of the solar shelters costs the city about $3,000 — less expensive than a shelter hardwired with electricity.

By the end of the summer, OTIS will install two more pilots at Oregon Avenue near 20th Street, and on Cottman Avenue near Bustleton.

“All the stars aligned” for the shelter at 29th and Ridge, said Angie Dixon, director of planning for OTIS. The stop has decent ridership — an estimated 200 people per day — and the rollout fell in line with a neighborhood improvement project at the exact same intersection.

Run by Council President Darrell Clarke’s office, last week’s revamp of 29th and Ridge included a new mural honoring the late police Sgt. Robert Wilson III.

septa-busshelter-solarpower2
Michaela Winberg / Billy Penn

So what could go wrong? Turns out, plenty.

“This is definitely a pilot, because we still need to see how well it functions,” Dixon said. “We were a little quiet about it to make sure installation went well.”

Implementing solar power is complicated. It doesn’t work in places like Center City, where buildings are so tall they block the sunlight. It doesn’t work on digitized bus shelters — the electronic ones that flip through different advertisements on the screen — but rather the ones with backlit poster advertisements.

Oh yeah, and these bus shelters might not work at all in the winter, Dixon said, when snow has the potential to block the panels from receiving any sunlight. In that case, the overhead lights on the shelter could go out entirely, leaving riders in the dark.

“We want to make sure from dusk to dawn that those are consistently lit,” Dixon said. “That’s our test.”

Philly's first ever solar-powered bus shelter at 29th and Ridge
Michaela Winberg / Billy Penn

The test of the three pilot sites will come to an end in the spring of 2019, Dixon said, and then OTIS will determine whether they’d like to install more of the solar shelters in Philly.

“We’ll see how they’re performing and make decisions around if we’re going to roll it out,” Dixon said.

 

 



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Northeast Construction is an Efficiency Vermont Contractor

OPEN HOUSE: Homes for the Future

We have 2 innovative energy retrofit projects taking place in Burlington. RSVP to our open houses to learn how we can restructure your home to take advantage of current methods of insulation, weatherization, air sealing, ventilation, heat pumps and solar.



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pv solar system in ferrisburgh, vermont

Residential Roof Mounted Solar System

6.33 kW DC PV solar system installed on a residential building in Ferrisburgh, Vermont in December of 2017. View details & learn more about our solar energy services!



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Solar panels in Kenya are powering school attendance and lowering tuition fees, while providing clean energy

By Benson Rioba

KILIFI, Kenya, July 25 (Thomson Reuters Foundation) – From a mile away, the roof of Mihingoni Primary School glitters in Kenya’s midday sun. The effect, though, comes not from the roof but from what is on it: a sparkling array of solar panels.

Mihingoni is one of eight mostly off-grid primary schools in the southeastern coastal county of Kilifi that have been fitted with a solar array.

The key task of the 800-watt panels is to power tablet computers that pupils use under the government’s strategy to integrate e-learning into primary education.

Last year more than 1 million of the devices were distributed to primary school students across the country – among them Mihingoni’s pupils. But tablets require electricity, which many rural schools lack.

Mihingoni primary is connected to the national grid, but power is expensive, and only its computer room has electricity, limiting charging of the devices.

But “since the solar panels were fitted (in January), pupils can have access to their tablets any time, and the cost of power has considerably gone down,” said Kuchanja Karisa, headmaster of the school, about 35 kilometres (22 miles) north of the coastal city of Mombasa.

In his impoverished area, he said, access to electricity boosts access to education, not least because the cost of power is factored into school fees.

“Poverty levels in this area are high, and any slight increase or decrease in school fees affects school attendance,” he said.

POWER HURDLE

The panels are part of a project run by two British-based organisations to provide solar power to primary schools and clinics in remote, off-grid communities.

The OVO Foundation – the charitable arm of a green-leaning energy firm – provides funding, while Energy 4 Impact, a charity that works on accelerating access to energy, does the installation.

The need is great: thousands of Kenyan schools lack access to the national power grid.

Figures from the education ministry show the country had 29,460 primary schools as of 2014, of which nearly 22,000 were state schools.

As of last December, about 24,000 primary schools were connected to the grid, according to Simon Gicharu who chairs the government’s rural electrification program.

A lack of power at unconnected schools, however, makes it difficult for students to take full advantage of tablets provided under the e-learning programme, Karisa said.

At Mihingoni, for example, pupils unable to access the computer lab to charge their tablets – which have an eight-hour battery life – ended up using them less, the headmaster said.

At the school, students previously paid 1,500 Kenyan shillings ($15) a year for electricity. But today, with the solar panels, there is a much lower fee – 500 shillings ($5), which goes to pay for more grid power in the rainy season when the solar panels work less effectively.

Cutting costs “has seen a sharp increase in the number of students who have since joined the school”, Karisa said.

In 2017, the school had about 50 pupils in each class, he said. Now it has 140, with the lower cost encouraging more parents to send their children to school.

Annual fees at the school are about 700 shillings ($7) per primary school student, apart from the energy supplement.

“Every coin counts for area locals,” Karisa said.

SCALING UP

Fifty kilometres north is Migodomani Primary School, which also had solar panels installed in January.

Headmaster Ngala Kahindi Luwali told the Thomson Reuters Foundation that until the panels were available, his pupils had been unable to use tablets at all.

“With the solar panels we have been able to catch up with other schools in urban areas that have already incorporated e-learning,” he said. “Pupils are enthusiastic with e-learning since it’s a new method of teaching.”

The panels power not only the tablets, but projectors and a television – none of which the school previously had been able to use.

The array also provides lighting to the school’s boarding facilities, where students once relied on costly and polluting paraffin lanterns.

Gaby Sethi, who heads the OVO Foundation, said she believes providing access to clean electricity in parts of the world without power can help people get ahead.

“We think we can have a significant impact on people and children’s lives if we’re electrifying schools and health clinics,” she said.

Under the project, the panels and installation are free, with the schools paying for ongoing maintenance costs, Karisa said.

Gabriel Katana, the county’s head of education and information and communications technology, said the local government wants to see solar panels installed to power hospitals and other social amenities too.

“In the future we will … purchase solar pumps to use in irrigating food to be grown in the schools to feed the pupils,” he said.

The ambition is to use solar power for all of the county’s primary school needs – not just powering information technology, he said.

CHALLENGES REMAIN

Relying on solar panels has some drawbacks, however – including that they can be less effective in rainy and cold seasons, said Mihingoni Primary School’s Karisa.

At those times, the school has to revert back to using kerosene for lighting and grid power for electricity, he said.

Daniel Kuria, who manages Energy 4 Impact’s solar programme in Kenya, agreed there is a need for a solar array that generates sufficient power in the rainy season.

Mihingoni primary will get an improved battery system to store solar power and help bridge the gap, he said.

For now, the solar panels – and lower school fees as a result – are helping keep students in school, Karisa said.

Parents “can use the flimsiest of excuses to keep their children home, so it’s important to have cheap, reliable energy, like solar, that will not expense the parents,” he said.

(Reporting by Benson Rioba. Editing by Robert Carmichael and Laurie Goering. Please credit the Thomson Reuters Foundation, the charitable arm of Thomson Reuters, that covers humanitarian news, climate change, resilience, women’s rights, trafficking and property rights. Visit http://news.trust.org/climate)

Our Standards: The Thomson Reuters Trust Principles.

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An international team of materials scientists from France, Russia and Kazakhstan found a way to boost the efficiency of organic solar cells several times. The new study, published in the Journal of Materials Chemistry A, has shown that ordered structures based on organic molecules can be used to produce solar power.

Solar panels, or batteries, are one of the most promising ways to generate electrical power. As of 2017, the combined power of solar panels installed worldwide amounted to 400 gigawatts. The solar power industry is experiencing a rapid growth, which depends on cheaper and more efficient batteries.

One way of improving solar power systems is by introducing new materials. The basic elements of a solar panel converting light into electricity are photovoltaic cells, or solar cells. They are mostly made of polysilicon — a highly pure polycrystalline form of silicon. But scientists are busy looking for alternative materials. Organic polymers with photovoltaic properties are one of the prime candidates to replace polysilicon.

A team of researchers from France (the University of Strasbourg, University of Lyon, Institut de Sciences des Matériaux de Mulhouse, Synchrotron SOLEIL), Russia (Moscow Institute of Physics and Technology, Moscow State University), and Kazakhstan (Nazarbayev University) has described a way of boosting the efficiency of organic solar cells by incorporating fluorine atoms in the polymer. This process, known as fluorination, was previously shown to enhance polymer photovoltaic properties, but the mechanism was poorly understood. The new study clarifies the effect of fluorination on cell efficiency.

By experimenting with various polymer modifications, the team increased cell efficiency from 3.7 to 10.2 percent. While this still falls short of the commercial silicon photovoltaics, the massive gain in efficiency suggests that polymer-based cells are a technology to be reckoned with. Perhaps with further tweaks organic solar cells could outperform their polysilicon-based counterparts.

The generic polymer used in the experiment has a rather complex molecular structure. It consists of a chain of repeating units shown in the left part of figure 1. Each of them includes sulfur heterocycles — rings made of one sulfur and four carbon atoms — and hydrocarbon side chains with a branched structure.

The researchers produced a number of modifications of this polymer to find which one has better photovoltaic properties. They changed the structure by adding fluorine atoms (figure 1, right) and varying the length of the side chains. One polymer configuration proved to result in vastly superior properties. Namely, the cell efficiency and current output were several times higher.

The team then investigated the microscopic structure of the best-performing compound. X-ray analysis revealed polymer stacking to be more ordered. Also, the molecules were characterized by higher charge carrier mobility, which means the material conducts electricity better. For a solar cell, this is clearly an advantage.

Co-author of the study Professor Dimitri Ivanov pointed out the technological advantages of the organic solar cells. He said they can be manufactured in fewer stages, compared with conventional silicon photovoltaics. The light-absorbing polymers can also function as a thin film, which means the solar panels need not be flat.

“For example, you could deposit organic solar batteries on roof tiles,” adds Ivanov, who heads the Laboratory of Functional Organic and Hybrid Materials at MIPT and is director of research at the French National Center for Scientific Research.

According to Ivanov, what made the study challenging was the “need to optimize solar cell efficiency by picking the right molecular energy levels of the donor and the acceptor, while also creating the appropriate supramolecular structure that would facilitate charge transport to the electrodes.”

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Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.

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Buy Aerial View of Solar Panels. Solar Power Plant. Source of Ecological Renewable Energy. by vadimbad on VideoHive. Aerial view of Solar panels.

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8 Hours Ago

Traditionally, renewable energy projects rely on government subsidy or guarantee but Bluescope’s newest investment in solar energy marks a significant shift as the private sector takes a more proactive role in driving these projects in the future, utilities analyst at Credit Suisse Peter Wilson tells CNBC.

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GREENVILLE, S.C. – Duke Energy Progress is launching an affordable option for customers that will enable them to share in the economic benefits from the output of a single solar facility – providing customers another choice that will continue to grow renewable energy in South Carolina.

The Shared Solar Program is available to all qualified Duke Energy Progress residential and nonresidential customers, including those who hold tax-exempt status, those who live in multifamily housing or rent homes and those who may not otherwise have access to solar energy.

Customers who subscribe to solar energy through the Shared Solar Program will receive a monthly bill credit for the value of the energy produced by their subscription.

“This is a great program for any customers who don’t own their residence or are unable to put a solar facility on their property,” Kodwo Ghartey-Tagoe, state president for Duke Energy in South Carolina, said in a news release. “We estimate that residential customers will earn back their initial payment in credits from the solar array in three years. Customers are not only saving on their electric bill, they are directly supporting a renewable energy future in South Carolina for generations to come.”

The program will be powered by the Whitney M. Slater Shared Solar Facility developed by Pine Gate Renewables and located in Dillon County near Lake View.

Duke Energy Progress serves electric customers in the northeastern part of the state, including Florence, Darlington and Sumter counties.

How does shared solar work?

Participants in the program will pay a monthly subscription fee of $6.25 per kilowatt in addition to initial fees to join the program. These program costs are in addition to the customer’s regular energy bill.

The monthly fee funds the customer’s share of supporting the operation of a solar facility located in the Pee Dee region. By subscribing to the Shared Solar Program, the customer will receive a monthly credit from Duke Energy Progress equal to the amount of solar energy the customer’s share produced.

Participating in this program will not impact customer usage or the way they pay their bill.

For qualified low-income customers, Duke Energy Progress will waive the application cost and initial fees, a $120 value. Customers should contact their local community action agency for assistance determining eligibility.

Space is limited and program reservations will be provided on a first-come, first-served basis. To participate in the program, customers must have an active Duke Energy Progress account. Visit duke-energy.com/SCSharedSolar or call 866-233-2290 for more information.

Growing solar in South Carolina

The Shared Solar Program is a result of the historic collaborative effort in South Carolina to grow solar jobs and give customers choices as to how they live their energy future.

As a result of Act 236 – landmark legislation passed by South Carolina’s General Assembly in 2014 – Duke Energy and its customers have helped make South Carolina one of the nation’s greatest success stories for renewable energy. More than 5,000 of the company’s South Carolina customers have installed solar panels on their homes and businesses, and in 2017, South Carolina jumped to No. 8 in the country for the amount of solar installed during the year.

Act 236 provided a framework for customers to install solar on their homes and businesses through strategic programs like the net metering incentive and rebate offerings. In addition to the net metering incentive, the company has provided more than $50 million in rebates as an extra incentive for customers who wanted to go solar across its South Carolina footprint.



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Solar panels (File)Solar panels (File)

Duke Energy Progress is launching a new affordable program that will allow customers to share in the economic benefits from the output of a solar facility. 

Customers who subscribe to solar energy through the Shared Solar Program will receive a monthly bill credit for the value of the energy produced by their subscription. 

Kodwo Ghartey-Tagoe, state president for Duke Energy in South Carolina says, “We estimate that residential customers will earn back their initial payment in credits from the solar array in three years.”

How it works: 

In addition to the customers regular monthly bill, participants in the program will pay a monthly subscription fee of $6.25 a kilowatt in addition to initial fees to join the program.  

The monthly fee funds the customer’s share of supporting the operation of the solar facility. The benefit to the customer, aside from supporting a renewable energy future in South Carolina, will be a monthly credit from Duke Energy Progress equal to the amount of solar energy the customer’s share produced. 

For qualified low-income customers, Duke Energy Progress will waive the application cost and initial fees, a $120 value. 

The Shared Solar Program is available to all qualified Duke Energy Progress customers including those who are residential and nonresidential, those that are tax-exempt, those who live in multifamily housing or rent homes, and those who may not otherwise have access to solar energy. 

Space in the program is limited and and will be provided on a first-come, first-serve basis. To participate, customers must have an active account with Duke Energy Progress. 

Fore more information visit their website here

Copyright 2018 FOX Carolina (Meredith Corporation). All rights reserved.

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