TRISTAN EDIS writes: Reposit Power are one of the first companies in Australia that have teamed up with Tesla in the roll-out of their Powerwall home energy storage system. The interesting thing about Reposit is that its primary businesses isn’t selling energy hardware but, rather, using software to aggregate and trade lots of little sources of power generation into the electricity market. Most battery retailers and installers in Australia have their roots in the off-grid market – they have sold batteries to customers because their only other option was expensive, maintenance-intensive diesel generators. But Reposit is inherently bound to the grid where there are lots of generators connected which they trade against. It means Reposit, in trying to get batteries rolled out (which they can then use to trade into the power market), face a far more challenging sales proposition. Grid-connected customers don’t really need the battery system – it’s an optional extra because the grid works extremely well in providing reliable and affordable power. Yet participants in the solar PV market know there is some considerable latent demand for batteries among householders – particularly those with solar systems – provided the offering is right. The challenge is working out what the successful marketing formula needs to be to tap this latent demand. Dean Spaccavento, chief product officer with Reposit, explained what they’ve found out so far, outlining 10 lessons of which I’ve plucked out five. The overall message is it is extremely hard to sell a grid-connected household an energy storage system. And Reposit had the benefit of an ARENA grant which allowed them to discount the price of their $25,000, 14kWh battery system by a very hefty $10,000. This was a one-off, small volume offer. To sell battery systems in Australia it will need to happen without the benefit of such a big rebate. The five lessons below provide one overarching lesson – batteries won’t be sold on some kind of pure sophisticated financial calculus of rate of return or NPV. Instead, it will be a mixture of rule-of-thumb financial hurdles and a strong dose of emotion. Cont'd....
Software plays a critical role in the performance of grid-scale energy storage systems because these energy storage systems are complex to design, deploy and operate.
Mark Shwartz, Stanford Univ.: Stanford Univ. scientists have created a new carbon material that significantly boosts the performance of energy-storage technologies. Their results are featured in ACS Central Science. "We have developed a 'designer carbon' that is both versatile and controllable," said Zhenan Bao, the senior author of the study and a professor of chemical engineering at Stanford. "Our study shows that this material has exceptional energy-storage capacity, enabling unprecedented performance in lithium-sulfur batteries and supercapacitors." According to Bao, the new designer carbon represents a dramatic improvement over conventional activated carbon, an inexpensive material widely used in products ranging from water filters and air deodorizers to energy-storage devices. "A lot of cheap activated carbon is made from coconut shells," Bao said. "To activate the carbon, manufacturers burn the coconut at high temperatures and then chemically treat it." The activation process creates nanosized holes, or pores, that increase the surface area of the carbon, allowing it to catalyze more chemical reactions and store more electrical charges.
The EV industry is on the precipice of a significant growth spurt. AltEnergyMag.com talks with Principal Solar about this and the their now available White Paper "The Road To Change: Electric Vehicles Power the Future for Everyone".
Thermal energy storage (TES) is a load management technology with a significant potential to shift load from peak to off-peak demand hours.
Scientists in South Korea have developed a new way to store energy that also offers a solution to a growing environmental problem. Reporting their findings in the IOP Publishing journal Nanotechnology, the research team successfully converted used cigarette butts into a high performing material that could be integrated into computers, handheld devices, electric vehicles and wind turbines to store energy. According to the study, this material outperforms commercially available carbon, graphene and carbon nanotubes. It may someday be used to coat the electrodes of supercapacitors: electrochemical components that can store extremely large amounts of electrical energy. "Our study has shown that used cigarette filters can be transformed into a high performing carbon-based material using a simple one step process, which simultaneously offers a green solution for meeting the energy demands of society," says co-author Professor Jongheop Yi of Seoul National University.
State leaders in the Northeast should keep watch of neighboring states to share best practices and innovative solutions for microgrids. Stakeholders can also look nationwide to other states including California and Illinois, where officials are creating incentives and addressing regulatory challenges.
How an ultra-clean, highly efficient fuel cell power plant helps a state university boost energy security, achieve ambitious sustainability goals and save more than $100,000 in energy costs annually.
Distributed generation technologies, like fuel cells, have demonstrated a track record of providing practical solutions to issues facing the grid, and no other technology can offer both the resiliency and efficiency of fuel cells, while still achieving significant emission reductions.
Ryan Wallace for The Science Times: Known as the "Powerwall", Tesla's newest invention is a thin, wall-mounted battery that is the size of a flat screen TV. And with this new battery home owners who have already invested in solar power will be able to entirely go off the grid, and even to sell their excess solar juice back to energy companies. Developed in conjunction with the lithium-ion batteries that Tesla uses for its electric vehicles, the Powerwall unit is an inexpensive unit, only running $3,000 to $3,500, and with it Musk and his companies believe that humans may one day be able to transition to solely using energy derived from the Sun. Though the installation may look like an artpiece, it packs quite a punch at 10 kWh, and with it consumers will not only be able to store their energy for dark solar-free nights, but also more efficiently contribute to global energy use by contributing carbon-free energy back into the mix.
Late Thursday night in Los Angeles, Tesla announced "Tesla Energy," described by the company in a statement as "a suite of batteries for homes, businesses, and utilities fostering a clean energy ecosystem and helping wean the world off fossil fuels." The statement continued: "Tesla is not just an automotive company, it’s an energy innovation company. Tesla Energy is a critical step in this mission to enable zero emission power generation." Tesla CEO Elon Musk made the official announcement onstage at the company's design studio in Hawthorne, CA, just south of LA. The home battery, call the "Powerwall," is intended to store solar energy and enable customers to bank grid electricity from non-peak periods and use it during peak times, saving money. It looks "like a beautiful piece of sculpture," Musk said. You can order it now, and it comes in different colors. "The Tesla Powerwall is a rechargeable lithium-ion battery designed to store energy at a residential level for load shifting, backup power and self-consumption of solar power generation," Tesla said. "The Powerwall consists of Tesla’s lithium-ion battery pack, liquid thermal control system and software that receives dispatch commands from a solar inverter. The unit mounts seamlessly on a wall and is integrated with the local grid to harness excess power and give customers the flexibility to draw energy from their own reserve."
The SESG Lab can replicate the operation of a substation and feeders of an electrical utility distribution system, thanks to its core infrastructure that supports organizations in the research and development of leading edge solutions and systems pertaining to smart grid technology.
Toshiba Begins Operation of Independent Energy Supply System Utilizing Renewable Energy and Hydrogen
Toshiba Corporation announced the start of demonstration operation of H2One, an independent energy supply system based on renewable energy and use of hydrogen as a fuel for power generation. Kawasaki City and Toshiba have installed the system at the Kawasaki Marien public facility and Higashi-Ogishima-Naka Park in the Kawasaki Port area. H2One combines photovoltaic installations, storage batteries, hydrogen-producing water electrolysis equipment, hydrogen and water tanks, and fuel cells. Electricity generated from the photovoltaic installations is used to electrolyze water and produce hydrogen, which is then stored in tanks and used in fuel cells that produce electricity and hot water. Since H2One uses only sunlight and water for fuel, it can independently provide electricity and hot water in times of emergency, even when lifelines are cut. Kawasaki Marien and Higashi-Ogishima-Naka Park, a municipal facility to promote Kawasaki Port, is a designated emergency evacuation area. In times of disaster, H2One will use stored hydrogen to provide an estimated 300 evacuees to the site with electricity and hot water for about one week. The H2One system is housed in a container, and can be transported to disaster-hit areas on trailers.
Ice Energy has been awarded a five-year contract from Riverside Public Utilities to provide 5 megawatts of behind-the-meter thermal energy storage using Ice Energy's proprietary Ice Bear system.
Professor Donald Sadoway remembers chuckling at an e-mail in August 2009 from a woman claiming to represent Bill Gates. The world’s richest man had taken Sadoway’s Introduction to Solid State Chemistry online, the message explained. Gates wondered if he could meet the guy teaching the popular MIT course the next time the billionaire was in the Boston area, Bloomberg Markets magazine will report in its May issue. “I thought it was a student prank,” says Sadoway, who’s spent more than a decade melting metals in search of a cheap, long-life battery that might wean the world off dirty energy. He’d almost forgotten the note when Gates’s assistant wrote again to plead for a response. A month later, Gates and Sadoway were swapping ideas on curbing climate change in the chemist’s second-story office on the Massachusetts Institute of Technology campus. They discussed progress on batteries to help solar and wind compete with fossil fuels. Gates said to call when Sadoway was ready to start a company. “He agreed to be an angel investor,” Sadoway says. “It would have been tough without that support.” Sadoway is ready. He and a handful of scientists with young companies and big backers say they have a shot at solving a vexing problem: how to store and deliver power around the clock so sustainable energies can become viable alternatives to fossil fuels. How these storage projects are allowing utility power customers to defect from the grid is one of the topics for debate this week at the Bloomberg New Energy Finance conference in New York. Today’s nickel-cadmium and lithium-ion offerings aren’t up to the task. They can’t run a home for more than a few hours or most cars for more than 100 miles (160 kilometers). At about $400 per kilowatt-hour, they’re double the price analysts say will unleash widespread green power. “Developing a storage system beyond lithium-ion is critical to unlocking the value of electric vehicles and renewable energy,” says Andrew Chung, a partner at Menlo Park, California–based venture capital firm Khosla Ventures.
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