Battling corrosion to keep solar panels humming
Sue Holmes for Phys.org: People think of corrosion as rust on cars or oxidation that blackens silver, but it also harms critical electronics and connections in solar panels, lowering the amount of electricity produced.
"It's challenging to predict and even more challenging to design ways to reduce it because it's highly dependent on material and environmental conditions," said Eric Schindelholz, a Sandia National Laboratories materials reliability researcher who studies corrosion and how it affects photovoltaic (PV) system performance.
Sandia researchers from different departments collaborate to accelerate corrosion under controlled conditions and use what they learn to help industry develop longer-lasting PV panels and increase reliability. For example, work by Olga Lavrova of Sandia's Photovoltaic and Distributed Systems Integration department demonstrated, for the first time, a link between corrosion and the risk of arc faults in PV systems' electrical connections. Research by Erik Spoerke of Sandia's Electronic, Optical and Nano Materials department focuses on developing new nanocomposite films that could dramatically increase reliability. Cont'd...
Liquid Air Energy Storage
Ultimately, useable large-scale renewables require useable large-scale storage. Highview has developed Liquid Air Energy Storage as a cost effective solution to high-power, long-duration storage that is geographically locatable to where it is needed, and cost-competitive.
Saudi Arabia Plans the World's Cheapest Power With Solar and Wind
Wael Mahdi for Bloomberg: Saudi Arabia will award its first tender to build 700 megawatts of solar and wind energy in September, with the cost of power forecast to be the lowest in the world, Energy Minister Khalid Al-Falih said.
OPEC’s biggest oil producer plans to build 300 megawatts of solar plants in the al-Jouf area in northern Saudi Arabia and 400 megawatts of wind projects in nearby Tabuk, he said. Requests to qualify for bidding will be issued Feb. 20 and bids will be on April 17.
“The terms on renewable contracts will be motivating so that the cost of generating power from these renewable sources will be the lowest in the world,” Al-Falih said Wednesday at a press conference in Riyadh. Cont'd...
Massive wind turbine takes energy generation record
John Anderson for NewAtlas: A behemoth V164 offshore wind turbine from Danish company MHI Vestas Offshore Wind has produced almost 216,000 kWh over a 24-hour period during tests at its site near Østerild, Denmark in December. In doing so, the 9 MW prototype – a reworked version of the V164-8.0 MW, which was initially developed in 2012 and launched two years later – takes the energy generation record for a commercially available offshore wind turbine.
Since its launch in 2014, the Usain Bolt of wind turbines is essentially in competition with itself, largely due to its superior size over the competition. The V164 stands at 722 feet (220 m) at full height, with 38-ton blades that are 263 feet (80 m) in length for a total sweep area of 227,377 square feet (21,124 square meters) – larger than the giant London Eye Ferris wheel. Cont'd...
Transactional Templates for Renewable Energy Contracts
The two new tools, a Request for Proposal (RFP) template and a Term Sheet template, aim to bring standardization to the corporate market for offsite renewables, and to serve as a starting point for companies still learning about the ins-and-outs of the transaction process.
New York's Quixotic Services Designs High-power 'Solar Wall' For Urban Health Plan in the Bronx
Unlike most rooftop systems, the 37kW array has been installed on the side of the building - a "solar wall" that will optimize the facility's clean energy production and save money for critical community healthcare services.
America is torn apart by partisan politics-except when it comes to buying solar power
Michael J. Coren for Quartz: We are all one when it comes to getting cheap power from the sun. Amidst the political rancor roiling the United States, one bright spot is home solar power installation. It keeps going up, and a study by PowerScout, a company that helps people switch to renewable energy, finds that to be true for households on both sides of the political divide.
PowerScout used machine-learning algorithms and satellite imagery to detect rooftop solar panels on the homes of 1.5 million political donors in 20 states. In mature solar markets like California and Hawaii, Republicans and Democrats install solar at nearly equal rates, says Eric Roberts of PowerScout. In more nascent markets, Democrats have slightly higher installation rates than Republicans. These findings hold throughout the country. Cont'd...
EnergySage Releases Findings of 2016 Solar Installer Survey
EnergySage released today the results of its second annual Solar Installer Survey, the largest and most comprehensive business climate survey of solar companies nationwide. The report captures key observations of local, regional and national solar installers in both residential and commercial markets. More than 360 experienced solar installers across the United States responded to the survey, which was fielded and authored by EnergySage in partnership with pv magazine.
Among the central findings, over half of solar companies surveyed (53%) report that their largest obstacle in closing sales is the confusion created by their competitors and its impact on consumer confidence overall. Similarly, the survey reflects an increasing trend noted in last year's report: customer acquisition has become more challenging due to increased competition and consumers reviewing more quotes before buying. However, the study also reveals that installer confidence levels have increased nationwide in the last year. Full Press Release:
What Does China's Investment in Renewables Mean for Alternative Energy?
China's National Energy Administration (NEA) announced plans recently to spend more than $360 billion dollars on renewable energy by 2020.
New Interactive Atlas Puts Spotlight on Planet's Solar Power Potential
Peter Koekoek for Daily Planet: A new web-based tool provides free access to accurate data about the solar power potential of your location – or any other part of the world.
Recent research has revealed how Americans across the political aisle are united by renewable energy. Roughly the same amount of people with rooftop solar power installations are Republicans and Democrats.
But geographically, not all places on the planet equally suitable for solar power – and that does not only include the amount of solar radiation that reaches the surface. The air temperature and terrain elevation may also impact how well solar equipment will fare in a particular area.
In some regions, less solar panels are needed to generate the same amount of power compared to other areas. The Global Solar Atlas now provides you with a colourful world map that allows zooming in on areas of up to one kilometre. Cont'd...
Mercom: Project funding for energy storage totalled US$820 million in 2016
Andy Colthorpe for Energy Storage News: Project funding for energy storage jumped to US$820 million in 2016 from just US$30 million in 2015, while Sonnen was revealed as the energy storage company to raise the most VC funding this year.
The latest quarterly report from Mercom Capital on financial activity in battery storage, smart grid and energy efficiency wraps up the results for the entirety of 2016. It found that during the year, energy storage companies raised US$820 million in project funding across seven deals, compared to US$30 million across three deals in 2015.
The majority of this project funding, US$625 million, was raised in the third quarter of the year and included Tabuchi America netting US$300 million for residential work and Advanced Microgrid Solutions with US$200 million of project financing from Macquarie Capital. Cont'd...
Lincoln International's Solar Energy Stock Index: Q4 2016
Similar to the S&P 500 Index, the Solar Stock Index is a market cap weighted composite index.
Why more and more countries are taking an interest in geothermal energy
Bianca Nogrady for VOX: At 2:46 pm local time on Friday, March 11, 2011, Japan was rocked by the largest earthquake ever to strike its shores. The 9.1-magnitude quake triggered a devastating tsunami that killed more than 15,000 people. It also took out the backup emergency generators that cooled the reactors at the Fukushima Daiichi nuclear power plant complex, causing a series of catastrophic meltdowns.
But amid the chaos, the Yanaizu-Nishiyama geothermal power plant in Fukushima prefecture didn't miss a beat. Along with two more of the nine geothermal power plants in the region, the 65-megawatt facility continued to generate power, even as many other power plants around them failed because of damaged equipment and transmission lines."This is big news for many geothermal people around the world," says Kasumi Yasukawa, principal research manager at the Institute for Geo-Resources and Environment in Japan's National Institute of Advanced Industrial Science and Technology.
In a country as seismically active as Japan, it was a clear signal that geothermal energy was worth investing in. Cont'd...
Making the switch: should the oil industry be moving into offshore wind?
Offshore Technology: The oil & gas and renewables industries are often described as a dichotomy, the old way versus the new, the dirty versus the clean. In reality, from a technical and engineering standpoint, there are many areas of overlap, particularly in countries such as the UK, where a majority of renewable and non-renewable assets are located offshore.
Building an oil rig in the North Sea is not all that different to setting up a wind farm. Both jobs require the ability to negotiate choppy waters and bad weather (often using remotely operated vehicles), and the technology to drill or pile foundations into the seabed. Communications and cabling infrastructure present a big challenge in both instances, as do the logistics of transporting and arranging huge components such as derricks and blades. Cont'd...
Tesla Energy Storage Helps Couple Use Almost All of the Energy They Generate From Solar
Devon's first Tesla Powerwall reduces amount of electricity Mike and Jan buy from their energy company by 86%
Records 271 to 285 of 3322
First | Previous | Next | Last
Featured Product
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.