Solar System Support - Installing Wood Blocking

This instructional video is about installing wood blocking for solar installations. Learn the best tips and tricks from our industry expert and Sr. Director of Policy, Jeff Spies!

Riding the 'Solarcoaster' as Shares Plunge Even More Than Coal

Joe Ryan & Brian Eckhouse for Bloomberg:  For all the upbeat forecasts about the growth of solar power, this is a punishing year for the industry. And it won’t improve anytime soon. SunEdison Inc., the world’s biggest clean-energy company, is bankrupt. Yingli Green Energy Holding Co., once the top panel maker, warned it may be inching toward default. And SolarCity Corp., the largest U.S. rooftop installer, plunged as much as 27 percent Tuesday after scaling back its installation forecast for the third time in seven months.  They’re not alone. A Bloomberg index of 20 major solar companies has slumped more than 30 percent this year. Soaring installations and growing global demand for clean energy is being trumped by investor concerns that the debt-fueled strategies employed by SunEdison, Yingli and SolarCity are endemic to the industry and dangerous for shareholders. “They call it the solarcoaster for a reason,” said Nancy Pfund, managing partner of DBL Partners and a SolarCity director. With so much happening, both positive and negative, “it’s been hard for investors to follow.” At a time when falling prices, renewed U.S. tax breaks and the Paris climate deal are fueling solar sales worldwide, solar shares are performing even worse than coal stocks.   Cont'd...

Solar Cell "Wonder Material"-Perovskite-Falls Short of Expectations

Hugh Cowley for Scientific American:  Perovskites have arguably transformed solar energy more in the last few years than other technologies have in decades. But British researchers have called into question optimistic predictions of undiscovered perovskites. Hybrid perovskites are a mix of organic and inorganic ions with the same crystal structure as calcium titanium oxide (CaTiO3). Halide perovskites are a subset of these structures containing halide ions such as fluoride or chloride. Iodide perovskites such as methylammonium lead iodide (CH3NH3PbI3) can convert sunlight to electricity. Researchers use a decades-old geometric 'tolerance factor' to propose new combinations of ions that will form stable perovskites. Now, Robert Palgrave and his team at University College London, UK, have reassessed the validity of the tolerance factor in predicting new hybrid perovskite structures.  Cont'd...

Solar power is contagious. These maps show how it spreads.

Brad Plumer for VOX :  Rooftop solar is expanding rapidly in the United States — by some estimates, a new system goes up every four minutes. There are plenty of reasons for that, from falling prices to generous federal subsidies to innovative leasing schemes. But there's another, little-discussed factor here: Residential solar power is contagious. Yep, contagious. Studies have found that if you install solar photovoltaic panels on your roof, that increases the odds that your neighbors will install their own panels. SolarCity, the largest solar installer in the United States, just published some fascinating data on this "contagion" effect. The company has installed 230,000 rooftop systems nationwide (often by allowing customers to lease panels rather than buy them upfront). It says fully one-third of customers were referred by a friend or neighbor. SolarCity has also made some neat animations showing the "contagion" effect in action.   View here:

How much noise is produced by wind turbines?

Phys.org:  Wind energy is to have a major share in the future renewable energy mix. The Germany-wide TremAc project is aimed at improving the planning, development, and acceptance of wind power plants and at developing objective criteria for their emissions. For this purpose, experts will study the interaction of acoustic and seismic vibrations of wind power plants and plan to generate a model to compute both emissions. TremAc is funded with EUR 1.85 million by the Federal Ministry for Economic Affairs and Energy. "We want to compute the complete chain of effects from the plant to the population," Theodoros Triantafyllidis, coordinator of the TremAc cooperation project and Head of the Institute of Soil Mechanics and Rock Mechanics of KIT, explains. Within the framework of the TremAc cooperation project, a single chain is to be developed for modeling all vibrating plant components and the surroundings, i.e. the rotating rotor blades, drive shaft, gondola suspension and tower structure, foundation, and the ground, various topographic terrains and airflows as well as adjacent residential buildings and workplaces.

High legal barriers in 10 states make it especially difficult to put solar panels on rooftops.

Julian Spector for CityLab:  A lot has been said already about the success of the states that are leading the adoption of solar energy. There’s plenty to celebrate, as solar installationssmash records and as the industry grows 12 times faster than the U.S. economy. At the same time, it’s important to recognize that many people live in places where the government is either not facilitating a solar market or is actively smothering it. Solar obstructionism takes center stage in a report, aptly titled “Throwing Shade,” out Tuesday from Greer Ryan at the Center for Biological Diversity. The organization advocates for an energy system that’s clean, equitable, and wildlife friendly, so Ryan set out to rank the states based on how well their policies encourage rooftop solar panels. Then she analyzed the 10 worst-scoring states with the highest solar potential in order to better understand how the absence of state-level policies—or the presence of antagonistic ones—hampers the growth of solar markets.   Cont'd...

Wind generation growth slowed in 2015 as wind speeds declined in key regions

EIA's most recent Short-Term Energy Outlook projects that wind generation will increase 16% in 2016, as significant capacity additions are expected to come online, adding another 6 GW, or 9%, to operating wind capacity in 2015.

Giant wave-riding platform design puts solar power out to sea

David Szondy for GizMag :  Sea-based wind farms are becoming a common sight in many parts of the world, but why not floating solar power stations? Engineers at the Vienna University of Technology foresee a future where platforms 100 m (330 ft) long and covered with solar panels float on even heavy seas thanks to a new floatation system called Heliofloat. Still under development, Heliofloat uses flexible, open-bottom floats that are capable of standing up to rough seas that would destroy such a platform sitting on conventional tanks. Solar energy has a great potential for helping solve the world's energy problems, but among the factors hindering its general application is that suitable land is not always available. Relocating panels offshore could make for installations of incredible size and generating potential, but the seas isn't always a placid place. Even relatively calm areas can suddenly become tempests with waves that can pound a floating platform to kindling in a matter of minutes.   Cont'd...

Permanent Magnet Technology: The Wind Industry's New Drive Train Standard

As PMG+FPC drive trains outperform DFIGs from both a full-cycle cost-efficiency and reliability perspective, the turbine manufacturing industry needs to revise some of its old assumptions and obsolete turbine technology choices to embrace the generator technology that leads to better AEP.

This Solar Power Plant Can Run All Night

Justin Worland for Time:  Crescent Dunes looks and sounds a bit like an invention lifted from a science fiction novel. Deep in the Nevada desert more than 10,000 mirrors—each the size of a highway billboard—neatly encircle a giant 640-foot tower. It looks like it might be used to communicate with aliens in deep space. But the engineers and financiers behind the facility, located in the desert about halfway between Las Vegas and Reno, say the power plant’s promise is anything but fiction. The solar power facility built and operated by the company SolarReserve can power 75,000 homes. What sets it apart from other big solar projects is that this plant can store power for use when it is most needed, including cloudy days and after dark—a major advance for renewable energy technology.   Cont'd...

SunEdison Files for Chapter 11 Bankruptcy Protection

PEG BRICKLEY and ANNE STEELE for The Wall Street Journal:  Solar-energy Company SunEdison Inc. on Thursday filed for chapter 11 bankruptcy protection, a dramatic move for a company whose market value stood at nearly $10 billion in July. SunEdison said its publicly traded entities, TerraForm Power Inc. and TerraForm GlobalInc., aren’t part of the filing. The two so-called yieldcos—separate entities that buy operating projects from developer SunEdison and pay out cash flow to their shareholders—said Thursday they believe they have sufficient liquidity to run their businesses and meet financial obligations, although SunEdison’s bankruptcy “will present challenges.” Bankruptcy has been a near-certainty for SunEdison for some time. The company borrowed heavily to buy up wind and solar developers, accumulating a pile of debt that worried investors. Disappointing earnings didn’t ease their fears about the pace of SunEdison’s growth, and an accounting move last year that reclassified more than $700 million worth of debt heightened anxieties.   Cont'd...

Upcoming Tradeshow, Conference & Exhibition Summary - May, June & July 2016

Here is a summary of what Tradeshows, Conferences & Exhibitions to look forward to in the coming months.

Why companies like: Google and Walmart are buying so much wind power

Brady Dennis for The Washington Post:  The U.S. wind energy industry had a memorable 2015, from installing thousands of new turbines across the country to supporting a growing number of jobs. But perhaps one of the most noteworthy brights spots of the past year, according to an annual report released Tuesday by the American Wind Energy Association (AWEA), was the growing demand for wind energy from major corporations. High-tech firms such as Google Energy, Facebook and Amazon Web Services, as well as more traditional companies such as Procter & Gamble, General Motors, Walmart and Dow Chemical, have signed contracts to purchase increasing amounts of wind energy in coming years. Corporations and other non-utility customers — including some municipalities and universities  — accounted for more than half of the wind power capacity sold through so-called power purchase agreements in 2015, according to the AWEA. The group said that corporate and other non-utility buyers have signed contracts for more than 4,500 megawatts of wind power capacity, or enough to power the equivalent of about 1.2 million American homes.   Cont'd...

Two-thirds of US solar installers do not offer storage, study finds

Ian Clover for PV Magazine:  A study by EuPD Research shows just 34% of PV installers in the U.S. offer storage solutions to customers, with those reluctant to do so citing cost concerns. However, 26% that currently do not offer storage hope to include it in their portfolios this year. For all the glitzy product launches by the likes of Tesla and Sonnen, the solar+storage landscape of the U.S. is still largely shaped by what leading installers are – or aren’t – prepared to offer to customers, and a recent survey has found that around two-thirds do not currently include storage technology in their product portfolio. EuPD Research’s latest PV Installer Survey USA 2015/16 revealed that only one-third of installers already offer energy storage to homeowners or businesses in the U.S. looking to adopt solar power. Of the two-thirds that do not, 38% said that current pricing of batteries impedes demand, meaning margins are too low for installers and the "technological maturity" of the systems on the market is not currently convincing. However, the mood does appear to be shifting in favor of storage, with 26% of survey participants saying they hope to add storage products to their portfolio at some stage in 2016.   Cont'd...

Stock Index - Solar Energy

Solar Energy Index Underperforms S&P in Q1 2016

Records 376 to 390 of 2876

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Solar & Wind - Featured Product

TRA SNOW AND SUN - SOLAR TILE MOUNT

TRA SNOW AND SUN - SOLAR TILE MOUNT

You haven't installed a tile mount that is easier to install than the Solar Tile Mount manufactured by TRA Snow and Sun. Solar Tile Mount is used on all tile roof profiles: flat, mid, and high. It is made in the USA of aluminum alloy for strength and excellent corrosion resistance. Solar Tile Mount is built to allow more ease in installation with more rise from the tile surface to the rail for better air flow below panels. The adjustable base is longer than most allowing attachment 6" to the left or right to have the bracket in the base of the pan of the tile and still fasten to the rafter. Solar Tile Mount is adjustable for counter batten systems from ¾" to 3". The horizontal rail is directly above base fasteners giving greater uplift resistance than any other system. For superior waterproofing apply TRA Snow and Sun's butyl backed VersaFlash aluminum flashing. No tile flashing is needed on top of the tile for greater labor and material cost savings.