Solar Wants to Help Fix a Power-Grid Problem It Helped Create


Big solar farms helped create a power-grid predicament in California. And now they’re offering to help solve it.

Solar panels have proliferated in the Golden State, flooding the grid with power supplies in the middle of the day when the sun’s out — and then quickly vanishing after sunset. This has created a sharp curve in California’s net-power demand that’s shaped like a duck. And the so-called duck curve is getting steeper every year, sending wholesale electricity prices plunging into negative territory, forcing generators offline and making it increasingly difficult to maintain the reliability of California’s transmission lines.

First Solar Inc. CEO Mark Widmar thinks he has a solution: change the way solar farms are paid. If the state’s utilities compensate them for shutting generation when the grid doesn’t need it and providing power later when it does, he said, farms could use increasingly sophisticated inverters and software controls to adjust. They’re only running full bore right now, he said, because their contracts with customers encourage them to produce as much energy as possible, he said.

“They just want you to pump out as much as you can,’’ Widmar said Wednesday while attending a symposium organized the California Independent System Operator in Sacramento. “Some contracts penalize you for under-generation.”

The duck curve underscores the challenges California and other states with ambitious environmental goals face in bringing online more carbon-free, renewable energy while ensuring the reliability of their power systems. Grid operators across the U.S. are managing larger swings in generation because of more intermittent solar and wind resources.

First Solar is in a position to know. The Tempe, Ariz.-based company has about 3.6 GW of solar generation in California. It could apply a meaningful brake on afternoon generation.

Europe has had to grapple with curtailments too, usually excess wind supplies that aren’t needed at night, said Jenny Chase, a solar industry analyst at Bloomberg New Energy Finance. Even a 1 percent reduction would help grid managers ease congestion and improve efficiency, reducing the rate at which other generation is needed to balance supplies.

“A very small curtailment can have a big cost-saving effect, and of course this can be passed on to the solar and wind plants,” Chase said in an interview Thursday.

Widmar said First Solar has been talking to state officials about creating this new type of contract that would pay solar generators for producing less midday and sending the power out later in the afternoon as demand ramps up. “What we are trying to propose,” he said, “allows you to capture the inherent value that solar could create.”

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How 139 countries could be powered by 100 percent wind, water, and solar energy by 2050


The latest roadmap to a 100% renewable energy future from Stanford’s Mark Z. Jacobson and 26 colleagues is the most specific global vision yet, outlining infrastructure changes that 139 countries can make to be entirely powered by wind, water, and sunlight by 2050 after electrification of all energy sectors. Such a transition could mean less worldwide energy consumption due to the efficiency of clean, renewable electricity; a net increase of over 24 million long-term jobs; an annual decrease in 4-7 million air pollution deaths per year; stabilization of energy prices; and annual savings of over $20 trillion in health and climate costs. The work appears August 23 in the journal Joule, Cell Press’s new publication focused on sustainable energy.

The challenge of moving the world toward a low-carbon future in time to avoid exacerbating global warming and to create energy self-sufficient countries is one of the greatest of our time. The roadmaps developed by Jacobson’s group provide one possible endpoint. For each of the 139 nations, they assess the raw renewable energy resources available to each country, the number of wind, water, and solar energy generators (for example: SUNJACK 20W PORTABLE SOLAR CHARGER ) needed to be 80% renewable by 2030 and 100% by 2050, how much land and rooftop area these power sources would require (only around 1% of total available, with most of this open space between wind turbines that can be used for multiple purposes), and how this approach would reduce energy demand and cost compared with a business-as-usual scenario.

“Both individuals and governments can lead this change. Policymakers don’t usually want to commit to doing something unless there is some reasonable science that can show it is possible, and that is what we are trying to do,” says Jacobson, director of Stanford University’s Atmosphere and Energy Program and co-founder of the Solutions Project, a U.S. non-profit educating the public and policymakers about a transition to 100% clean, renewable energy. “There are other scenarios. We are not saying that there is only one way we can do this, but having a scenario gives people direction.”

The analyses specifically examined each country’s electricity, transportation, heating/cooling, industrial, and agriculture/forestry/fishing sectors. Of the 139 countries — selected because they were countries for which data were publically available from the International Energy Agency and collectively emit over 99% of all carbon dioxide worldwide — the places the study showed that had a greater share of land per population (e.g., the United States, China, the European Union) are projected to have the easiest time making the transition to 100% wind, water, and solar. Another learning was that the most difficult places to transition may be highly populated, very small countries surrounded by lots of ocean, such as Singapore, which may require an investment in offshore solar to convert fully.

As a result of a transition, the roadmaps predict a number of collateral benefits. For example, by eliminating oil, gas, and uranium use, the energy associated with mining, transporting and refining these fuels is also eliminated, reducing international power demand by around 13%. Because electricity is more efficient than burning fossil fuels, demand should go down another 23%. The changes in infrastructure would also mean that countries wouldn’t need to depend on one another for fossil fuels, reducing the frequency of international conflict over energy. Finally, communities currently living in energy deserts would have access to abundant clean, renewable power.

“Aside from eliminating emissions and avoiding 1.5 degrees Celsius global warming and beginning the process of letting carbon dioxide drain from the Earth’s atmosphere, transitioning eliminates 4-7 million air pollution deaths each year and creates over 24 million long-term, full-time jobs by these plans,” Jacobson says. “What is different between this study and other studies that have proposed solutions is that we are trying to examine not only the climate benefits of reducing carbon but also the air pollution benefits, job benefits, and cost benefits”

The Joule paper is an expansion of 2015 roadmaps to transition each of the 50 United States to 100% clean, renewable energy and an analysis of whether the electric grid can stay stable upon such a transition. Not only does this new study cover nearly the entire world, there are also improved calculations on the availability of rooftop solar energy, renewable energy resources, and jobs created versus lost.

The 100% clean, renewable energy goal has been criticized by some for focusing only on wind, water, and solar energy and excluding nuclear power, “clean coal,” and biofuels. However, the researchers intentionally exclude nuclear power because of its 10-19 years between planning and operation, its high cost, and the acknowledged meltdown, weapons proliferation, and waste risks. “Clean coal” and biofuels are neglected because they both cause heavy air pollution, which Jacobson and coworkers are trying to eliminate, and emit over 50 times more carbon per unit of energy than wind, water, or solar power.

The 100% wind, water, solar studies have also been questioned for depending on some technologies such as underground heat storage in rocks, which exists only in a few places, and the proposed use of electric and hydrogen fuel cell aircraft, which exist only in small planes at this time. Jacobson counters that underground heat storage is not required but certainly a viable option since it is similar to district heating, which provides 60% of Denmark’s heat. He also says that space shuttles and rockets have been propelled with hydrogen, and aircraft companies are now investing in electric airplanes. Wind, water, and solar can also face daily and seasonal fluctuation, making it possible that they could miss large demands for energy, but the new study refers to a new paper that suggests these stability concerns can be addressed in several ways.

These analyses have also been criticized for the massive investment it would take to move a country to the desired goal. Jacobson says that the overall cost to society (the energy, health, and climate cost) of the proposed system is one-fourth of that of the current fossil fuel system. In terms of upfront costs, most of these would be needed in any case to replace existing energy, and the rest is an investment that far more than pays itself off over time by nearly eliminating health and climate costs.

“It appears we can achieve the enormous social benefits of a zero-emission energy system at essentially no extra cost,” says co-author Mark Delucchi, a research scientist at the Institute of Transportation Studies, University of California, Berkeley. “Our findings suggest that the benefits are so great that we should accelerate the transition to wind, water, and solar, as fast as possible, by retiring fossil-fuel systems early wherever we can.”

“This paper helps push forward a conversation within and between the scientific, policy, and business communities about how to envision and plan for a decarbonized economy,” writes Mark Dyson of Rocky Mountain Institute, in an accompanying preview of the paper. “The scientific community’s growing body of work on global low-carbon energy transition pathways provides robust evidence that such a transition can be accomplished, and a growing understanding of the specific levers that need to be pulled to do so. Jacobson et al.’s present study provides sharper focus on one scenario, and refines a set of priorities for near-term action to enable it.”

Seeing light-to-energy transfer in new solar cell materials


Scientists at the U.S. Department of Energy’s Ames Laboratory are now able to capture the moment less than one trillionth of a second a particle of light hits a solar cell (for example: Renogy solar suitcase ) The generation and dissociation of bound electron and hole pairs, namely excitons, are key processes in solar cell and photovoltaic technologies, yet it is challenging to follow their initial dynamics and electronic coherence. and becomes energy, and describe the physics of the charge carrier and atom movement for the first time.

Using time-resolved low frequency spectroscopy in the terahertz spectral region, the researchers explored the photo-excitations of a new class of photovoltaic materials known as organometal halide perovskites. Organometallics are wonder materials for light-harvesting and electronic transport devices, and they combine best of both worlds — the high energy conversion performance of traditional inorganic photovoltaic devices, with the economic material costs and fabrication methods of organic versions.

“These devices are so new and so unique that the mechanism by which a particle of light, or photon, converts to charge carriers and how they move in a concerted way for energy conversion is not well understood, and yet that is the most fundamental processes in in solar cell and photovoltaic technologies,” said Jigang Wang, an Ames Laboratory scientist and associate professor of physics at Iowa State University. “Why is this material so distinct? That has been the big question in the scientific community, and it has led to a fever of research and publication.”

Ames Laboratory researchers wanted to know not only how the generation and dissociation of bound electron and hole pairs, namely excitons, happened in the material, they wanted to find out the quantum pathways and time interval of that event.

“If you look at the natural process, in photosynthesis, it’s an extremely efficient process in some biological molecules, so it’s also very coherent. We see a similar thing in a human-made system of a laser; a laser oscillates in a fixed wave pattern,” said Wang. “If we can measure such a memory in the charge transport and energy migration in these materials, we can understand and control it, and have the potential to improve them by learning from Mother Nature.”

Conventional multimeters for measuring electrical states in materials do not work for measuring excitons, which are electrically neutral quasiparticles with no zero current. Ultrafast terahertz spectroscopy techniques provided a contactless probe that was able to follow their internal structures, and quantify the photon-to-exciton event with time resolution better than one trillionth of a second.

Wang credited the contributions of researchers from multiple areas of expertise across the Ames Laboratory with the significance of the discovery. “This was only possible with the collaboration of experts in material design and fabrication, computational theory, and spectroscopy,” he said. “Having those capabilities in one place is what makes Ames Laboratory one of the most forward looking places in this kind of photonic materials research.”

How to choose the best child visitation center?


The feelings that parents experience upon likely to function and departing the kid are difficult enough to keep. Nevertheless, you will find more severe issues to become handled to supply suitable take care of your youngster even if you’re operating elsewhere. Departing your youngster underneath the treatment and guidance of others might be one of the toughest and hefty choices to create. But there is specific action to become obtained plus some fundamental recommendations to check out to become guaranteed that you’re finding the right child visitations centers Everett to depart your youngster/kids with.

Study and examine some listings and supplies to find a young child care company that’s near to your house or workplace. Pick a few child-care facilities and ask from their store giving each institution a polite phone. A few of the info it is possible to request through your request is:

The starting and final period of the child care center
When the child visitation centers offers the dishes, when the guardian must provide the foodstuff of the kid or if you will find additional charges for ingredients
When the guardian is permitted to visit watching the kid
If you’re able to visit the middle for visual examination, what evening and time if permitted
Make sure to take notes while speaking with the contact individual of the particular child-care facilities while you consult with them about the telephone.

Visiting the middle together with your kid not just enables you to take a look at the children and people dealing with the kids. Visiting could also permit you to decide when the location is certified or authorized to become clear and secure when there is sufficient room for the kids to perform in addition to the gadgets supplied for that kids to perform with. You may even gauge the perspective of the caregivers within the institution, in addition, to take notice of the caregiver’ response upon viewing your youngster. Observe the way the caregiver talks using the kid. View whilst the caregiver connect to additional kids currently signed up for the middle. You may even base your final decision about the impact or result of the kids currently being looked after in the middle. Notice carefully if they’re pleased, playing gladly and provided an opportunity to make selections.


It might even be useful to request feedback from different parents whose kids or kids happen to be trusted for the middle. If at all possible, request straight in the middle in the event that you might contact their customers as referrals. If you should be pleased with the outcomes, perhaps you are ready to return to a choice which supplier you believe is better for the kid. You will see a contract to signal together with your selected middle, make sure to study and comprehend the items of the agreement. If you will find conferences or construction the middle is keeping due to their customers, attempt around possible to obtain concerned and engage which means you may realize that they’re certainly getting excellent care of the kid.

Fore more information use Google or any other search engine system as it will be easier to find a solution to the problem if you try to do a little research by yourself.Keep asking the questions until you get the right answer and from there you can find a better way to close the deal.

Things to Consider Before Choosing SEO Company


More than 80 percent of consumers search the Web to seek out businesses offering the services and products they’re trying to find. Should you not need a website, you’re missing out on short tons of leads and prospective customers. Utilizing the Web to advertise your company is among the most effective investments you may make. In the event that you presently don’t have a website, it’s time to make a website and optimize the website so you can enlarge your novel-of-company. In the event that you are no online marketing specialist, you always have the option to hire an expertise Search Engine Optimization business to get you started. Before requesting a Search Engine Optimization quote, learn the 5 factors you should think about when searching for the best local SEO services and select the best Search Engine Optimization services.

Look Past the Unrealistic Claims

More than a few companies maintain that they are going to allow you to get ranked on the initial page of Google in as tiny as a day. You’ve got to recognize that enhancing your standing on internet search engines will devote some time. You don’t wish to become number one for a keyword that’s scarcely ever sought. Ensure the business describes their claims in detail or there isn’t any point in picking them to optimize your website.

Signs of Success

Any reputable Search Engine Optimization firm needs to be ready to provide you with evidence of succeeding. They need to have an expansive portfolio of websites they’ve optimized previously and be ready to reveal you these websites before offering you a Search Engine Optimization quote. Keep clear of the firms who need to show you a listing of the Search Engine Optimization services before showing you signs which their customers have triumphed.

What’s the Status of the Search Engine Optimization Business on Google?

Advertising companies who offer Search Engine Optimization services should be pros at what they do. Like you, they would like to build company and marketplace on the web. Make sure that the Search Engine Optimization firm has a high ranking for many popular keywords on the Internet related to advertising. When they don’t, how will they make your institution’s advertising effort a success?

Is it true that the Search Engine Optimization Firm Offer Reports?

You need to be upgraded every step of the solution to see the way the marketing campaign is working. You need to also stay in contact with all the business’s advertising team and make certain they’re eager to provide you with a direct contact number. Getting trusted contact numbers is vitally significant.

his is why everyone should be careful about making this decision otherwise one can be easily mistaken and make the mistake over and over again. For more information use Google or any other search engine system as it will be easier to find a solution to the problem if you try to do a little research by yourself.

What Search Engine Optimization Services You Want To Get?

When you require an SEO quote for Search Engine Optimization services, be sure to understand precisely that which you will get. You ought to compare the Search Engine Optimization services made available from several companies before you ever pick a Search Engine Optimization quote. Each of the services needs to be recorded in detail on your own quote. Compare what’s excluded and included in each bundle to help you remain on budget.

As soon as you contemplate all the variables above, it is possible to proceed to find the right Search Engine Optimization quote made available from the most effective business in the business. Remember to find out more about the business, find out more about the firms, and then budget the price.

Time to Sell Online?

Beyond connecting with a new demographic, e-commerce can also be an important way for watch manufacturers to compete with online resellers of pre-owned Invicta watches.

“There’s so much secondhand product on the market. We wanted to be there as a direct connection to the consumer,” said Karl-Friedrich Scheufele, co-president of Chopard, whose United States e-boutique opened three years ago. (Chopard’s online operation has since expanded to Britain.)

Indeed, the proliferation of pre-owned watches online — on sites like Crown & Caliber and Bob’s Watches — can be traced to the 1980s, when men began accumulating timepieces, said Danny Govberg, owner of Govberg Jewelers in Philadelphia, a company established in 1916.

Two years ago, the watch retailing company introduced an app, Govberg OnTime, for iOS and Android devices, designed for people who want to buy, trade and sell new and pre-owned watches.

“In 2009 — one generation later — when gold hit $1,800, women stood in line to sell their gold jewelry, but men did not liquidate their timepieces because the knowledge of what to pay for them wasn’t there,” he said.

“So the men just kept the watches in their drawers. It’s been a 25-year accumulation.”

By offering clients click-to-buy capability, transparent pricing, on-demand education, videos, phone support and, last but not least, a brick-and-mortar showroom complete with a touch-screen TV to explore the store’s online inventory, Mr. Govberg represents a handful of online upstarts showing the primary watch market how omnichannel retailing is done.

A Short History of Amish Quilting Styles


The Amish quilt started around the 1870’s, because of their religious beliefs to stay isolated from the modern world of pleasures and conveniences, quilting was at first a temptation that the Amish women resisted. After realizing the practical use of the quilt, they eventually became a normal part of Amish lifestyle.

The first Amish quilts were very plain with solid dark colored fabric, a lot like the clothing they wore. But their talent for the elaborate designs is what made their quilts famous. After much discussion, in the Amish community, over several years the Amish women slowly made modification to their patterns and colors. This decision, like all the Amish decisions, had to be approved by the Amish Community. Today there is more individual input to how the quilts are designed and what patterns are used to create the unique and beautiful colored hand stitched quilts that we see and love today.

Although the outside world doesn’t understand the Amish community, it is the center of Amish existence. Friends and family work together on projects for the entire community. Such as bringing in the crops, building a barn, this is often called a frolic. Women will gather at a chosen home to do canning vegetables, fruits and jellies. Usually one woman will piece a quilt together, but it is not uncommon to have several women around the quilting frame to help stitch the quilt together; this is often referred to as a quilting bee or quilting circle. This allows the women to do something they love and to catch up on everything that is happening in the community.

The Amish believe a woman’s ability to create and hand stitch a quilt is a gift from God that should be used to its fullest ability. Many of the young girls are taught to start quilting by the age of four years old. This helps to explain why they provide such expert stitching in the Amish quilts.

Today, many consider the unique quilt patterns a work of art. More and more families want their own Amish quilt, not just because of it practical use, but for its artistic value. Amish quilts are often used as a piece of wall décor, wedding gifts, birth of a child and they make a great fund raisers.

The term Amish Quilt is used to describe a quilt with the combination of traditional Amish quilt block patters, and made by an Amish or a Mennonite quilter. The reason for this is because the Amish and Mennonites share similar cultural habits. They lived alongside each other since immigrating to the United States. Their history of quilting and their patterns are the same.