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Posts tagged ‘solar panels’

Powerful Solar

From Technology Review
by Kevin Bullis
14 September 2012

A startup’s novel way to dice up semiconductor wafers is leading to some of the world’s most powerful solar panels—they convert over a third of the energy in sunlight, compared to about 15 percent for conventional solar panels. Now that company, Semprius, has announced that it will open a factory in Henderson, North Carolina, later this month to manufacture them. Although the opening will mark a significant milestone for the company on the way to commercialization, the technology is still at a relatively early stage of development: the factory will produce only a few megawatts of solar panels, compared to the hundreds of megawatts that silicon solar panel factories make.

For more about the technology, which Technology Review chose as one of the top 10 emerging technologies this year, see “TR10: Ultra-Efficient Solar.”

Read entire article at Technology Review.

Community Solar Power

From TriplePundit
by Andrew Burger
7 August 2012

Community-Owned Solar Power on the Rise in the U.S.

Conditions are right for growth in community-owned solar photovoltaic (PV) projects. With more than 1-MW of community-owned solar garden projects in development and a pipeline of an expected 5-MW more this year, Martifer Solar USA and the Clean Energy Collective intend to capitalize on the improving situation.

The two partners are leveraging their respective strengths in the U.S. solar power sector to bring an increasing amount of local, community-owned solar power capacity online – Los Angeles-based multinational Martifer Solar USA in PV manufacturing and systems installation and Clean Energy Collective in community-based renewable power project development.

“With demonstrated success in Colorado and net metering legislation on the table in California, now is the time for community owned solar,” Martifer CEO Raffi Agopian stated in a press release.

Unique partnership model

A pioneer in the field, Clean Energy Collective (CEC) has developed an innovative business model and technology for developing community-based clean, renewable power generation. Partnering with solar PV manufacturing and installation companies such as Martifer Solar USA, it develops large-scale solar and renewable power facilities that are “collectively owned by participating power utility customers.”

A core aspect of such efforts is CEC’s proprietary RemoteMeter system, which “automatically calculates monthly credits and integrates with existing utility billing systems, enabling all utility customers to easily have clean, renewable power credited directly on their monthly utility bills without modifying their home or office,” CEC explains.

Colorado a hotspot for community-owned solar power
Colorado’s been a hotspot for CEC and Martifer Solar USA’s solar gardens. The two worked together in 2011 to build the 858-kW Garfield County Airport Solar Array – the largest PV installation of its kind in the U.S. when it was completed. The project also garnered national recognition when it won the Solar Energy Industries Association (SEIA) and the Solar Electric Power Association’s (SEPA) “2012 Photovoltaic Project of Distinction Award.”

Despite their optimistic outlook, CEC and Martifer Solar USA recognize the challenges related to developing community-owned solar PV installations in the US. That’s where their partnership really yields dividends, Spencer explained.

“We invested heavily in the development of the solar garden concept, but someone has to execute. Martifer Solar USA has done so in the past and achieved the results we wanted; we are pleased to enter into new contracts with them this year, and see many more on the horizon.”

Read complete article at TriplePundit.

Solar Mike Keeps Shining

It must be excruciatingly frustrating to have the answers, see the solution and know that the technology works, but feel like you’re shouting into the wind. The old adage, “If a tree falls in the forest, will anybody hear?” could aptly be rephrased, “If someone shouts in the middle of a crowd, will anybody listen?”

Mike Arenson, better known in California, as Solar Mike, has diligently and consistently advocated for solar energy use for over thirty years. He and many others across the country, have proclaimed, from the highest mountain tops and the lowest valleys, that the answer to our energy shortage, energy “problems” and energy waste, is already at hand. They have been installing solar panels for businesses, homes, green houses, hot water heaters, hot tubs and swimming pools for decades.

Some people say it isn’t cost effective, that the cost, per kilowatt-hour, is cheaper with gas and nuclear energy. That use to be true, but now the rates are nearly equal. It takes an investment to get started, although many federal, state and county programs now give rebates for those wishing to install solar panels. Costs are declining and tax credits are on the rise.

I won’t talk about the politicians, agencies and businesses that seldom, if ever, mention or think of using solar power as an alternative to fossil fuels (though thought many more are now doing so), but I must say that we seem to be drowning in abundant sunshine while trying to stay afloat with sinking barrels of oil!

If you’re wondering whether I practice what I preach, we had solar panels installed 12 years ago, enough to meet all our electrical needs. We are tied in to the local power company grid and our meter often runs backwards, giving us credit during the spring and summer months for the fall and winter. Our unit also includes a battery back up system. When the power companies lines are down or there is a blackout, our lights keep burning and the refrigerator and computer keep humming along. During the sporadic blackouts in California, we stay lit, unaware that they have even occurred until hearing about it on the news or looking down the street and seeing it’s all dark. With energy prices always rising, we have already paid off our initial investment.

The panels fit nicely on the roof of our home’s design and are barely visible from the street. They can be placed in numerous locations, depending on your situation and do not hurt the ascetics of your home. Solar is especially valuable in hot, humid climates with abundant sunshine, including the southern U.S., South America, Africa and Asia.

While people in The States talked about becoming less dependent on oil, especially from other countries, and the continuing concerns about oil exploration, war and the environment; Solar Mike and his colleagues, have been providing the solution. With more patience than an old-
growth redwood, Mike has proceeded with one person and one home at a time.

Personally, I don’t see how he and those like him have kept their sanity. I would have been screaming, yelling and knocking my head against a wall long ago and said “forget about it”. I would have let somebody else make the effort and struggle to change our old ways of thinking about energy. I would have said, “Some day, someone will do something about this.” That “some day” is already here and has been for Solar Mike and a core of devoted sun worshipers who help convert the big orbs rays into energy.

I have no doubt that these pioneering solar advocates will continue plugging along with the patience of all the saints, until America wakes up and realizes these solar-shelled turtles of persistence passed the finish line far ahead of the fossil hares.

Stop Talking About Clean Energy

It only takes me a few minutes to say out loud, “Here they go again.” Every time I hear a politician, commentator or policy wonk tout the need for our country to become energy independent and develop “future” technology that doesn’t pollute, reduces green house gasses and makes us less dependent on foreign oil (and all the conflict that creates), I want to choke on their oratory fumes. They talk about it like a religious mantra, but never put it into practice.

The “future” technology and know how is already here and has been for some time. What’s lacking is the awareness of its existence, the fear of changing the economy and the will to transform our present infrastructure and dream big. We’ve done it before at home, with The New Deal and the space program. We’ve done it abroad with The Marshall Plan. We’ve done it repeatedly for unnecessary wars and wasted billions in defense contracts, instead of creating new energy and life-giving technology.

Ten years ago, when our family put solar panels on our home, I thought we’d found the answer, but it turns out that that was small potatoes. Even though solar energy is dropping in price and there are rebates and incentives galore, not everyone can afford the initial costs, nor is it easy to convince people to do so. People in the northern half of the U.S. can’t always use solar because it’s difficult to store and save the energy produced for a cloudy day. By all means, I hope individuals and companies continue to put ever more efficient panels on their roofs, buildings and parking garages and have dispersed energy sources, but not that alone.

Photovoltaic solar energy (panels on your roof), combined with wind, hydro-electric and hydrothermal sources, are all a big step in the right direction, but could take half a century to spread and be adopted nationwide. If we stop and look in the mirror, there’s been another alternative all along and it’s about to light up the world.

While searching the web for photovoltaic solar companies, I happened upon some sites that spoke about thermal solar energy. Like most politicos and environmental junkies, I didn’t have a clue to their existence, let alone know what thermal solar was.

Solar thermal works by using special mirrors that reflect the sun on to long pipes filled with water. The heat from the sun boils the water, which produces steam to turn turbines. The energy from the turbines is then transmitted to the electric company. The companies that have developed this technology have also figured out a way to store the energy produced for future needs (a rainy day). It turns out that there are several companies already building these systems and is placing them in the Nevada desert and have contracted with Pacific, Gas & Electric, Southern California Edison and other large power companies in the U.S.

By using a 90 mile by 90 mile square area, these systems could provide enough energy for most of the country. Solar thermal facilities in the North African desert could produce adequate amounts of energy for most of Europe. There are similar desert areas in Asia, Australia and South America. Since China, India, the U.S. and Europe are the leading emitters of green house gasses, it makes sense to first convert their energy sources (oil, nuclear and coal) to thermal solar so the rest of the planet can breathe and adapt the same technology for their countries social and material needs.

The beautiful thing is that there is no pollution, nor emission of green house gasses in the process. It works with our existing infrastructure and could be improved in the near future by building new transcontinental power lines. The parts for these power plants are being built now. They will be soon be up and running. Combined with the use of all-electric vehicles, which can (by this time next year) get up to 250 miles per charge and charge in minutes (due to recent battery advances), our nation could be oil free within a few decades.

These essential changes in how we produce and utilize energy can accelerate if (and the “if” is the part that is so maddening and beyond my control) politicians, media moguls and large businesses are willing to get fired up, transform the job market and put their financial and political will behind a new Marshall Plan for U.S. energy. It will take much less time to change the source of energy for a few power plants than it will to change the habits and availability of new energy sources for millions of Americans.

Having realized that photovoltaic energy is a drop in the bucket, compared to thermal solar, has given me hope and perspective. When I arise in the morning and look in the mirror, I am reminded that the simple combination of sun upon glass can literally save our planet. If we can only get the politicians and those running for office, to stop talking about “future” energy independence and start talking to those who already have the technology out on the table, we can make these dreams a present reality.

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