California Has More PV Systems Than The Rest Of The Us Combined

California installed 291,513 Photovoltaic (PV) systems while the rest of the country has 191,612 systems.

Extreme Winter Weather Hurts 2015 European Solar Performance

Conducting thorough weather analysis is essential for understanding in the short-term whether a project is performing as it should be, based on the available resource.

How Solar+Storage Could Protect Multifamily Affordable Housing from Power Outages

Clearly, states are beginning to focus on providing clean energy power solutions in the face of ever increasing severity of storms and the need to have resilient power available for disaster response.

UK solar power industry proposes emergency plan to save renewables

Mark Tran for The Guardian:  The solar power industry has proposed an emergency plan to rescue renewables, which it says would add just £1 to consumer bills by 2019, on top of the £9 a year that clean technology subsidies cost bill payers. The scheme is a response to government plans to cut subsidies for rooftop solar panel installations by 87% from 1 January. The Solar Trade Association (STA) has warned the move could cost up to 27,000 jobs and waste public money already spent on supporting the technology. Solar companies are already going bust as a result of the changes, with an estimated 1,000 jobs lost so far. On Friday, a company backed by the billionaire inventor Elon Musk pulled out of the UK, blaming the government for not supporting the technology. Zep Solar UK, which is owned by SolarCity where the Tesla boss is chairman, was the fourth UK solar business to close in a fortnight. SolarCity blamed cuts to solar subsidies announced by the Department of Energy and Climate Change (DECC) in the summer. The STA plan would include higher initial tariffs for subsidies to make investing in the technology viable, with reductions set out to allow the government to control costs and give the industry certainty. The plan would ensure that families, farmers, housing associations and community groups could continue to be involved in the move towards low-carbon power and give them more control over their energy, the STA argues.   Cont'd...

The Importance of Pyranometer Temperature Response

One of the main parameters affecting the real-world measurement of solar radiation by pyranometers is temperature response.

Technology Helps Wind Industry Through PTC Debate

Despite the historic success of tax credits in helping to move renewable energy industries forward, the reality is that these credits might not be renewed. Industries will have to rely more heavily on the savings possible through equipment and technology improvements.

Increasing Wind Turbine AEP with Vortex Generators

Vortex Generators are small attachments made from durable material that energizes the flow around the blade and reduce flow separation.

As California Rolls Out More Solar Power, Regulators Could Undercut The Industry

Ken Silverstein for Forbes:  The fall season is kicking off a sizzling solar power debate in California and one that has the potential to undercut the state’s climate mission. Utility regulators there are in discussions over how to balance the interest of rooftop solar generators with the utilities on which they will still depend. Just how those hearings are resolved with have implications for the rollout of renewable energy not just in California but also around the country. At issue is something called “net metering,” which is technical term used to measure the amount of money that rooftop solar generators should get paid relative to retail electricity prices. Utilities, generally, want to offer them the wholesale rate for what they send to them over the grid. Those are expensive wires to maintain and ones that all customers will use, even those who power their homes with solar panels. That’s because the sun is not always shining and the utilities would then have to provide them electricity over their networks. The present net metering rules in California were set a dozen years ago, with the intent that they would expire when solar penetration reached 5 percent at any of three investor-owned utilities: Edison International’s SoCalEd, PG&E Corp. and Sempra Energy, which is nearing the threshold. Generally, those utilities are paying customers the full retail value for their electricity generated and transmitted.  Cont'd...

UK - It could be lights out for solar power under this government

Terry Macalister for The Guardian:  Ministers rightly wring their hands over the 2,200 jobs being lost at the 98-year-old Redcar steelworks hit by low-cost Chinese competition. But they seem deaf to warnings of 27,000 jobs being potentially lost in a brand-new industry now facing crisis due to their own clumsy cuts. Almost 1,000 redundancies have already been made by the solar panel installersMark Group and Climate Energy. No one in the industry believes this will be the end of the sad story. The latest flashpoint for “green” developers is the government plan to slash the feed-in tariff – which subsidises people installing solar panels on their home – by almost 90%. Meanwhile, an energy-efficiency regime has been scrapped with only a vague promise of a future replacement. If these were isolated examples, then companies might be willing to hang on in the hope of better things to come. But they are the latest in a series of cuts not just to solar but also to onshore wind, and come at a time when it seems maximum effort is being expended on removing roadblocks to shale-gas frackingand nuclear power. Cont'd...

Energy Production in Motion: The Advantages of Single-Axis Solar Tracking Systems

Despite the fact that tracking systems are more complex than fixed-tilt systems, they represent the future of the industry and a glimpse of all that is possible in terms of solar energy capacity.

Cloaking Principle Could Boost Solar Cell Performance

Invisibility cloaking may be a long way from reality, but the principle could help improve the performance of solar cells in the near term.  In a series of simulations, researchers at the Karlsruhe Institute of Technology have demonstrated how cloaks made of metamaterials or freeform surfaces could eliminate shadows cast by energy-harvesting components onto the active surfaces of solar cells.  Contact fingers, which extract electric current, cover up to one-tenth of the surface area of a solar cell. By guiding light around these features, more of the sun's energy could be captured by the solar cell.  "Our model experiments have shown that the cloak layer makes the contact fingers nearly completely invisible," said doctoral student Martin Schumann.   Cont'd...  

Germany & China Lead in Solar Installed Capacities

Germany's top place in the ranking is not surprising given its Energiewende focus to transition away from fossil fuels & its declared war on coal.

Molten Salt Energy Storage - Time to Bottle the Sun

A total of about 2,125 MW of molten salt energy storage projects are in pipeline which are scheduled for deployment by 2018.

SolarCity claims highest efficiency solar panel

Tristan Edist for the Business Spectator:  SolarCity, the largest retailer of solar systems in the US (over 30% market share) and partly owned by Tesla’s Elon Musk, has announced it will produce the most efficient solar module available on the market at 22.04% conversion efficiency. SolarCity is claiming it has therefore managed to pip SunPower who have been the longstanding holder of the most efficient conventional silicon solar module on the market. However in a subsequent discussion with Greentech Media, Peter Rive’s Chief Technology Officer conceded the majority of the panels coming off its pilot 100MW manufacturing line were hitting 21.8%.  In 2017 the company will be then moving production to a new 1 gigawatt per annum capacity plant in Buffalo which can sometimes encounter challenges with achieving stable quality levels during production start-up. SunPower claims 21.5% efficiency for its X-Series panel although often manufacturers will  have some variance in performance of panels and make claims based on conservative estimates of performance. Greentech Media quotes an anonymous Sunpower source saying that 22% efficient panels are already coming off its production lines.  In addition the company is targeting achieving 23% conversion efficiency from panels it will manufacture from its fifth fabrication line, scheduled for start-up in 2017.     Cont'd...

Renewable Energy Surpasses Coal in the UK

Written by Keith Kohl for Energy & Capital:  For the first time ever, more energy in the UK was supplied by renewable sources than coal. For an entire quarter. Wind, solar, and bioenergy checked in at 25% of the energy supplied. All of this was possible due to the fact that more wind turbines and solar panels were installed, which must be a good amount if you want to compare it to the same period last year, for which these energy options only accounted for 16.4% of electricity. Recently, the UK has been working to close aging coal and nuclear power plants. Of course, this will lead to its own issues... [Solar Panels] Conservative ministers collectively believe that the subsidies given to renewable energy were too numerous, going so far as to suggest plans for an 87% reduction of solar power, and to cut support for onshore wind farms. With that kind of spending cut, it's not surprising to hear that industry execs believe these actions would unjustly put an end to renewable energy just as it was gaining traction.   Cont'd...

Records 496 to 510 of 2877

First | Previous | Next | Last

Solar & Wind - Featured Product

AllEarth Renewables - The Solar Tracker

AllEarth Renewables - The Solar Tracker

Designed and manufactured in the U.S., the AllEarth Solar Tracker is a complete grid-tied, dual-axis solar electric system that produces up to 45% more electricity than fixed systems. The tracker uses GPS and wireless technology to follow the sun throughout the day for optimal energy production. It has an industry-leading 10 year warranty and 120 mph wind rating, superior snow shedding, and automatic high wind protection. Its simple, durable design and complete system pallet simplifies costly procurement and installation time. Contact us about becoming a dealer partner or purchasing an AllEarth Solar Tracker.