Audi converts potholes to power with new eROT system
JAKE LINGEMAN for AutoWeek: Aim for those bumps; save the planet. Audi is working on a new suspension system called eROT (electromechanical rotary damper) that turns the kinetic energy of damper travel into usable, fuel-saving power.
“Every pothole, every bump, every curve induces kinetic energy in the car. Today’s dampers absorb this energy, which is lost in the form of heat,” said Dr. Stefan Knirsch, board member for technical development at Audi AG. “With the new electromechanical damper system in the 48-volt electrical system, we put this energy to use. It also presents us and our customers with entirely new possibilities for adjusting the suspension.”
The electromechanical dampers are arranged horizontally and feed electricity from the motion -- 100 to 150 watts on an average road during testing in Germany -- to a lithium-ion battery. A DC converter connects the 48-volt electrical subsystem to the 12-volt primary. Cont'd...
Renewable energy storage revolutionised by flywheel device
Tereza Pultarova for Engineering & Technology Magazine: A flywheel-based device invented by a Lancaster University student could help solve the renewable energy storage problem, offering a better alternative to battery technology.
The Flywheel Energy Store, designed by 21-year-old Abigail Carson, retains energy kinetically in a levitating floating mass. The flywheel, about the size of a football, doesn’t require any additional control mechanisms, inputs or maintenance.
“The global energy crisis is the biggest and most urgent problem that needs addressing,” said Carson, who is awaiting a patent for the device. “The Flywheel Energy Store can be used for a vast range of applications – most significantly in providing energy security and independence for everyone globally, but also including eliminating waste in power networks, pumping water to villages and allowing for cleaner cooking and heating in developing countries, instant charging of electric vehicles, and off-grid energy storage.”
Carson’s flywheel can rotate at up to 144,000 revolutions per minute (rpm). The majority of existing flywheel designs usually achieve a maximum of around 60,000rpm. Cont'd...
Tesla Lowers Bid, Agrees to Pay $2.6 Billion for SolarCity
Chris Martin for Bloomberg Technology: Elon Musk’s Tesla Motors Inc. reached an agreement to buy SolarCity Corp. for $2.6 billion, about $300 million less than an initial proposal criticized as a “bailout” for the solar company in which he’s the largest shareholder.
SolarCity investors will receive $25.37 a share in stock under the agreement, according to a statement Monday. Musk initially offered $26.50 to $28.50 a share in Tesla stock. Analysts have said in the past that the bid was too low and investors have questioned the wisdom of Musk combining his electric-car maker with the clean-energy company. The deal, which allows SolarCity to solicit competing takeover offers through Sept. 14, will now go to the shareholders of the companies for approval. Cont'd...
Molten storage and thermophotovoltaics offer new solar power pathway
Georgia Institute of Technology: New computer modeling suggests that high temperature TPV conversion -- which captures infrared radiation from very hot surfaces -- could one day rival combined-cycle turbine systems when combined with thermal storage using liquid metal at temperatures around 1,300 degrees Celsius. Advances in high-temperature components and improved system modeling, combined with the potential for conversion costs an order of magnitude lower than those of turbines, suggest that TPV could offer a pathway for efficiently storing and producing electrical power from solar thermal sources, a new study suggests.
The underlying technologies of high temperature storage and thermophotovoltaic conversion could also be used to produce grid-scale batteries able to rapidly supplement other power sources by storing heat for quick conversion to electricity. The research, supported by ARPA-E, was reported July 4 in the journal Energy and Environmental Science by researchers at the Georgia Institute of Technology. Cont'd...
Energy Storage Would Get U.S. Tax Credits in Bipartisan Bill
Chris Martin for Bloomberg Politics:  Energy storage would gain access to the same tax incentives that helped make renewable energy the biggest new source of electricity in the U.S. last year under a bill introduced in the Senate.
Batteries like the lithium-ion ones in phones and electric vehicles would be eligible for the tax incentives when connected to the utility grid at homes and businesses under a bill introduced Tuesday by Democratic Senator Martin Heinrich from New Mexico. The bill has eight co-sponsors including Dean Heller, a Nevada Republican, according to a statement.
Other energy storage technologies such as pumped hydroelectric power, flywheels and compressed air would also have access to the tax credits, modeled after incentives for the solar industry, which reimburse as much as 30 percent of installation costs. Â Cont'd...
Intersolar and ees North America 2016 underway in San Francisco
Since its establishment in 2008, Intersolar North America has become the most attended solar event and the premier networking platform for the North American solar industry.
AltEnergyMag.com's special coverage report brings all the important headlines from this years event.
Visit the Intersolar North America website.
Click here for AltEnergyMag.com's Special Intersolar Newspage
Why Every Rooftop Solar System Needs Energy Storage
John Petersen for Investor Intel: Rooftop solar is an odd duck. A consumer buys an expensive capital asset with the expectation that he’ll recover his investment through lower electric bills. As a matter of metaphysics, he’s decided to go into the power business with the primary goal of satisfying the most important and discriminating customer on the planet. The value proposition he currently offers his local electric utility is:
I’ll buy less electricity from you because of my solar panels, but I need you on standby 24/7 to supply my nighttime needs and fill any weather related power production gaps;
Since my solar panels will frequently produce more power than I need, I want you to give me credit for any excess power production, let me draw equivalent power from you when I need it, and structure it all as a tax free swap;
You can, of course, bill me for any difference between what I deliver and what I take;
I’ll have no duty to buy a fixed amount of power from you or deliver a fixed amount of power to you, but you must supply whatever I need and take whatever I don’t need; and
You will be required to pay all of the costs associated with weather related production gaps and pass those costs through to your other customers.
Full Article:
Tesla applies for 6 new trademarks to sell solar energy under the 'Tesla' brand
Fred Lambert for Electrek: Last week, Elon Musk announced his plan for Tesla to acquire SolarCity and fold the solar installer’s operations into Tesla’s own business. The offer is still contingent on board approval and shareholder votes at both companies, but Electrek has now learned that the automaker is going ahead with trademark applications to sell solar products under its ‘Tesla’ brand.
According to trademark filings obtained by Electrek, Tesla’s trademark and copyright attorney at Cooley LLP, Ariana Hiscott, filled 6 new trademark applications for the company on June 22nd – the day Tesla announced the offer.
The trademarks applications range from solar cells and solar modules: “Solar energy equipment, namely, photo-voltaic solar modules for converting electronic radiation to electrical energy; and equipment for use in collecting and converting solar into electricity, namely, solar cells and inverters.”
To the installation and repair of solar panels: “Installation, maintenance and repair of solar panels and other equipment for use in converting solar energy into electricity; installation of solar energy systems and consulting related thereto.”
It also covers the monitoring of solar energy generation and the financing of solar installations. All applications are for the trademark “Tesla”. Cont'd...
BMW electric-car batteries to be used as home energy-storage devices
Stephen Edelstein for GreenCarReports: Tesla Motors was the first carmaker to branch out from selling electric cars to offering standalone battery packs for energy storage, but others have followed the company's lead.
Mercedes-Benz and Nissan have stated their intentions to enter the energy-storage market, and now BMW is jumping on the bandwagon as well.
At the Electric Vehicle Symposium & Exhibition 29—known as EVS29—held this week in Montreal, Canada, BMW unveiled an energy-storage system that uses battery packs from i3 electric cars.
Developed in concert with German firm Beck Automation, BMW's system is designed to use either new battery packs or "second-life" packs that have degraded too much for continued use in electric cars.
Battery packs that can no longer function in cars still have enough usable capacity for energy storage.
BMW has tested the concept over the past five years with various research projects, including a 2013 "micro-grid" project with the University of San Diego, and a 2014 collaboration in Germany with utility Vattenfall to use electric-car battery packs as buffer to help stabilize electricity grids. Cont'd...
24M's Batteries Could Better Harness Wind and Solar Power
Elizabeth Woyke for MIT Technology Review: Lithium-ion batteries power everything from smartphones to electric vehicles. They’re well suited to the job because they are smaller and lighter, charge faster, and last longer than other batteries. But they are also complex and thus costly to make, which has stymied mass adoption of electric transportation and large-scale energy storage.
Yet-Ming Chiang thinks his startup 24M has the answer. The key is a semisolid electrode. In a conventional lithium--ion battery, many thin layers of electrodes are stacked or rolled together to produce a cell. “Lithium-ion batteries are the only product I know of besides baklava where you stack so many thin layers to build up volume,” says Chiang, who is a cofounder and chief scientist at 24M as well as a professor of materials science at MIT. “Our goal is to make a lithium-ion battery through the simplest process possible.” Cont'd...
Electric Utilities Prepare for a Grid Dominated by Renewable Energy
Julia Pyper for GTM: A growing number of electric industry leaders agree that it’s only a matter of time before renewable energy resources dominate their grid systems.
In California, it’s already a reality, said Steve Berberich, president and CEO of California Independent System Operator Corporation. On a typical day, CAISO will pull about 30,000 megawatts of energy production, with around 6,500 megawatts from solar, 5,000 megawatts from wind and another 5,000 from geothermal and other services on the system. In addition, California’s grid system has roughly 4,000 megawatts of behind-the-meter solar, which is growing at a rate of about 70 megawatts per month.
In any given day, California gets more than 30 percent its electricity from renewable energy. On many days that amount climbs to 40 percent, and on some days renewables reach 50 percent, said Berberich.
“Now we have to think about the system as a renewable energy-based system complemented by other things,” he said, speaking at the Edison Electric Institute’s annual convention this week in Chicago. Cont'd...
Virtual Power Plants Get Around Solar Power's Intermittency Problem
Richard Martin for MIT Technology Review: Attempting to harness the power of distributed rooftop solar installations to make its grid more flexible and reliable, New York utility Consolidated Edison is launching a pilot program this summer to link dozens of small solar arrays into a single, software-connected power plant. The utility is working with solar power developer SunPower and energy storage company Sunverge to create a “virtual power plant”—a network of distributed assets that functions as a unified resource on the grid.
The project will include 300 homes with a combined total of 1.8 megawatts of solar capacity and batteries that can store up to four megawatt-hours of electricity, enough to run 300 average U.S. households for about 10 hours. Cont'd...
Energy Storage: It's About the Software
Carl Weinschenk for EnergyManagerToday:  Renewable initiatives rely on the ability to save the generated energy for a rainy - or windless - day. It follows that the software driving the pivotal task of managing the energy storage system is of paramount importance, says Gabe Schwartz, the Director of Marketing for Stem, which describes itself as an intelligent storage company that combines hardware and software storage platforms.
The core storage technology itself is important, of course. But the linchpin - the secret sauce - is the way in which that energy is handled once it is generated. "It is not a solar panel…where if the sun is shining you are in good shape," Schwartz said. "It must shift use from one time to another knowing exactly when most valuable time to do that is and have the ability to act quickly when those opportunities present themselves both to the customer and the grid."
The market for storage - and the software that drives it - is growing. Â Cont'd...
The inventor of this solar-powered water filtration system wants to win the Nobel Peace Prize
Clinton Nguyen for Tech Insider: Marco Attisani wants his company to be the first to win the Nobel Peace Prize. It's a lofty goal for a 10-person startup, but Attisani is sure that the solar-powered water filtration systemsthey're producing will earn a spot on the shortlist.
The filtration machines manufactured by Attisani's Italian company, Watly, are covered in photovoltaic panels that feed electricity into internal batteries. This allows the systems to be installed in the world's most remote locations, free of the need to connect to a power grid. The 40-foot-long, 15-ton units also serve as Wi-Fi hubs and charging stations.
Each machine can process 5,000 liters of drinking water each day and provide Wi-Fi access within a half-mile radius, according to CNN . The team claims the units will last roughly 10 years before they require maintenance.
Watly tested two units in its production facility in Talmassons, Italy in 2013 and 2014 before piloting a unit in rural Ghana in 2015. The company has also started an Indiegogo campaign to help fund an expansion into Sudan and Nigeria. Cont'd...
Three takeaways from the national energy storage conference in Charlotte
John Downey for Charlotte Business Journal: A Charlotte energy executive surveying the scene at the third day of the Energy Storage Association’s Annual Conference and Expo expressed satisfaction and a little surprise at the bustle and buzz the event produced.
On a large scale, the conference put top storage developers and vendors together with power producers and systems operators looking for sparks. But there were interesting stories on a smaller scale as well. Here are a few of those quick shots:
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