Large Scale Energy Storage Roundup http://www.energymatters.com.au/index.php?main_page=news_article&article_id=3755 23 May 13,
As the world increasingly moves towards renewable energy; it will need many individual energy storage locations distributed across the grid to address issues of variability in electricity production. The idea of a battery being a relatively small device or a series of small boxes cobbled together with wiring is changing fast. Batteries capable of storing huge amounts of energy are being developed using all sort of materials and technologies.
The following are just a few we’ve reported on in the past; some of which are have now been deployed in commercial applications: Read more »
Compressed Air Storage Could Boost U.S. Renewable Energy Uptake http://www.energymatters.com.au/index.php?main_page=news_article&article_id=3752 21 May 13, New U.S. research into storing energy in underground caverns in the form of compressed air could lead to improved uptake of utility scale wind power in America’s Northwest.
A study by the Department of Energy’s Pacific Northwest National Laboratory and Bonneville Power Administration has found that compressed air energy storage (CAES) has the capacity to store wind power for up to 85,000 homes in two specific geologic areas of inland Washington and Oregon.
CAES storage helps solve the problem of intermittency in renewable energy generation. When the wind powers turbines, or the sun shines on a solar power plant, electricity is abundant and must be stored for later use.
CAES works by using excess energy from a power plant to pump compressed air deep into an underground storage structure such as porous rock, where it remains until needed. The pressurised air is then released back to the surface where it drives a turbine to generate electricity for the grid, thus providing a constant flow of energy.
Study manager for the BPA, Steve Knudsen, believes that with 13 percent of the Northwest’s power supply coming from wind energy sources, CAES technology will become a valuable tool in helping the states meet Renewable Portfolio Standards, which require 20 to 30 percent of all electricity come from variable sources such as wind and the sun.
There are just two CAES plants in the world and both are man-made, one in Alabama and one in Germany. The PNNL/BPA research looked instead for natural geologic formations in Oregon and Washington, finding seams of porous volcanic basalt rock, 450 metres below the surface and at least 10 metres thick.
So far two promising locations have been identified. One is the Columbia Hills Site in Oregon, which is near a natural gas pipeline and could be paired with a CAES system to provide up to 40 days of continual energy storage. The other is the Yakima Minerals Site, which would use geothermal power and CAES technology in a hybrid power plant and utilising geothermal energy to cool the facility’s air compressors, increasing their efficiency.
VIDEO The Lithium-Polysulfide Flow Battery http://www.energymatters.com.au/index.php?main_page=news_article&article_id=3713 29 April 13,
U.S. researchers believe a breakthrough in battery technology will see more utility-scale solar and wind energy powering national grids.
Scientists from the U.S. Department of Energy’s (DOE) SLAC National Accelerator Laboratory and Stanford University have designed a new low-cost flow battery storage system that could solve issues relating to the peaks and troughs in power generation from renewable energy sources.
Flow batteries pump two types of liquid through a chamber, where two streams of dissolving molecules cause a chemical reaction that store or release energy.
They are currently thought to be the most effective way to maintain grid stability because the tanks, pipes and fittings used in flow battery systems can be scaled-up to store power for large-scale solar and wind facilities where energy generation depends on weather conditions.
But today’s flow batteries are expensive – the liquids used often require large quantities of rare earth materials to operate and a special membrane that separates the active and inactive ions. According to the SLAC/Stanford team, with solar and wind heading toward 20 percent of generation capacity, there needs to be a simpler and more efficient flow battery system.
“For solar and wind power to be used in a significant way, we need a battery made of economical materials that are easy to scale and still efficient,” said Yi Cui, Stanford associate professor of materials science and engineering.
Cui’s team designed a new membrane-free battery that does away with rare materials, using a chamber with a single molecular stream of lithium and sulphur ions. A reaction with a catalyst produces lithium polysulfides, discharging energy and absorbing lithium. The lithium ions are then reabsorbed into an organic compound to be used again.
The researchers say the next step is to develop and field test a utility-scale flow battery based on their design capable of handling megawatts of energy storage.
Another flow battery concept we’ve covered in the past utilising cheap and readily available materials is the Rustbelt Flow Battery; which uses iron.
Wind Power Storage, Environmental Network News, 26 April 13 One of the problems with wind power is that when there is no wind then there is no power. Offshore wind could provide abundant electricity — but as with solar energy, this power supply can be intermittent and unpredictable. A new approach from researchers at MIT could mitigate that problem, allowing the electricity generated by floating wind farms to be stored and then used, on demand, whenever it’s needed….. http://www.enn.com/energy/article/45904
Japan To Implement 60,000 kWh Capacity Battery http://www.energymatters.com.au/index.php?main_page=news_article&article_id=3697 19 April 13 The Japanese government plans to install a massive battery at an electrical substation on the island of Hokkaido.
According to the Japan Times, the country’s Ministry of Economy, Trade and Industry (METI) says the battery will be put in place by the end of the first quarter in 2015 to help develop a stable electricity supply generated by solar and wind power sources. The battery system will have a storage capacity of around 60,000 kWh and will use up a large portion of ¥29.6 billion earmarked for battery projects.
Hokkaido is Japan’s second largest island and the largest and northernmost of Japan’s 47 prefectures. It has become a hive of renewable energy activity due to the availability and low prices of suitable land. According to Bloomberg, the island’s power infrastructure is approaching its limit for handling the amount of clean electricity being generated.
Japan has seen solar uptake skyrocket since the introduction of a feed in tariff scheme, currently paying 38 yen per kilowatt hour (around AUD 38 cents) for rooftop solar power systems under 10kW and slightly more for larger systems.
In other renewables news out of Japan, METI states based on data compiled by the Agency for Natural Resources and Energy (ANRE), the total combined new renewable energy capacity added between April 1, 2012, and January 31, 2013,reached 1,394,000 kW .
Photovoltaic power facilities accounted for 1,329,000 kW, with household solar panel systems making up 1,023,000kW of that amount. METI notes that 37,000kW capacity was added by January 31 – with all of that being added after June 2012.
METI also announced Japan and India have decided to hold the “India-Japan Energy Forum 2013″ in September in New Delhi and Greater Noida, which aims to reinforce the two nation’s cooperation in the field of energy.
Germany’s Energy Storage Incentives Start May 1 http://www.energymatters.com.au/index.php?main_page=news_article&article_id=3694 17 April 13, New renewable energy subsidies in Germany may do for battery storage globally what the nation did for solar power.
In February we reported Germany would apparently soon formally confirm a start date for an initiative to support the purchase of battery based energy storage systems integrated with solar panel arrays. It took a little longer than rumoured, but that moment seems to have arrived. Read more »
Crescent Dunes Molten Salt Solar Receiver Completed http://www.energymatters.com.au/index.php?main_page=news_article&article_id=3673 5 April 13, SolarReserve has announced one of its flagship projects is reaching final stages of completion in the Nevada desert, with the installation of molten salt receiver panels on the peak of the 540-foot tall tower of the Crescent Dunes Solar Energy Plant. By utilising molten salt storage technology, the Crescent Dunes solar plant, located near Tonopah, Nevada, can operate like a conventional power plant, providing “on demand” and emissions-free electricity for up to 10 hours in adverse conditions.
”The energy storage capability of this technology solves the problem of intermittency typical of other renewable energy sources,” said Kevin Smith, CEO of SolarReserve. Read more »
A Solar Powered Tokyo? http://www.energymatters.com.au/index.php?main_page=news_article&article_id=3661 28 March 13 Much of Tokyo’s power needs once supplied by nuclear power could be met by rooftop solar along with energy storage systems already in place.
While solar power offers an attractive alternative; the issue remains of continual supply – particularly at night and during heavily overcast days.
A recent study examining the potential for rooftop photovoltaics in Tokyo to replace nuclear capacity reveals some of the answer is already in place – pumped hydroelectric storage. Read more »
Small-scale energy storage project wins Australian Government backing PACE – Process and Control Engineering 22 March, 2013 Kevin Gomez Australian energy storage company Ecoulthas been awarded Australian Government funding through the Australian Renewable Energy Agency (ARENA).
The funds will be used to conduct small/ mid-sized storage project development using Deka UltraBattery technology to deliver cost effective storage solutions for homes and businesses in Australia and around the world.
This pilot will develop a battery storage system prototype for three types of deficit charge/distributed energy applications:
- Off-grid renewable power solutions (Remote Area Power Supply);
- Distributed grid connected storage to support voltage and power fluctuations that arise where there is dense concentration of small roof-top solar installations in residential areas; and
- Hybrid generation (such as diesel plus renewables) to improve fuel efficiencies.
Ecoult CEO John Wood said the ARENA grant was a strong vote of confidence in the Australian-invented technology……
The pilot project will extend the collaboration between Ecoult, its US-based parent company East Penn Manufacturing and the Commonwealth Scientific and Industrial Research Organisation (CSIRO).
Research partner CSIRO, which originally invented the Deka UltraBattery technology, will also play an important role in this pilot project, developing intelligent algorithms that improve the integration of Deka Ultrabattery units with the Solar PV panels and increase the value derived from each kWh of energy storage…… http://www.pacetoday.com.au/news/small-scale-energy-storage-project-wins-australian
Germany To Announce Energy Storage Subsidy? http://www.energymatters.com.au/index.php?main_page=news_article&article_id=3584 Germany blazed the trail for solar PV uptake and it appears the nation may be about to do the same for energy storage.
Rumour has it that early this week Germany’s government will announce an initiative to support the purchase of battery based energy storage systems integrated with solar panel arrays.
Owners of solar power systems up to 30kW capacity will be entitled to low-interest loans from state-owned bank KfW and a repayment allowance from the Ministry of Environment that will cover 30% of the cost of an energy storage system. Read more »
Duke Energy completes North America’s largest energy storage system,
Renewable Energy Magazine Robin WhitlockThursday, 07 February 2013
The 36MW energy storage system will store power generated by the
nearby Notrees wind farm and became fully operational in December
The company announced plans to install large-scale energy storage
systems to service its wind farm at Notrees in late 2009, matching a
$22 million grant from the US Department of Energy (DOE).
As well as helping to meet power demand the system will also help to stabilize the frequency of electricity travelling through the power grid. DukeEnergy is currently working closely with the Energy Reliability Council of Texas (ERCOT) which will indicate whether the system shoulddispatch stored energy to increase frequency or absorb energy to decrease it. Performance data will be collected from the battery storage system by the Electric Power Research Institute (EPRI) to help assess the broader potential for deployment of storage solutions throughout the sector. Read more »
Using rust and water to store solar energy as hydrogen e! science News, November 11, 2012 How can solar energy be stored so that it can be available any time, day or night, when the sun shining or not? EPFL scientists are developing a technology that can transform light energy into a clean fuel that has a neutral carbon footprint: hydrogen. The basic ingredients of the recipe are water and metal oxides, such as iron oxide, better known as rust. Kevin Sivula and his colleagues purposefully limited themselves to inexpensive materials and easily scalable production processes in order to enable an economically viable method for solar hydrogen production. The device, still in the experimental stages, is described in an article published in the journal Nature Photonics……
The results presented in the Nature Photonics paper represent a breakthrough in performance that has been enabled by recent advances in the study of both the iron oxide and dye-sensitized titanium dioxide, and both of these technologies are rapidly advancing. Sivula predicts that the tandem cell technology will eventually be able to attain an efficiency of 16% with iron oxide, while still remaining low cost, which is, after all, the attractiveness of the approach. By making it possible to store solar energy inexpensively, the system developed at EPFL could considerably increase the potential of solar energy to serve as a viable renewable energy source for the future.
New Korean Lithium Ion Battery for EVs Charges in Under 1 Minute http://www.greenoptimistic.com/2012/08/21/korean-lithium-ion-carbonized-battery/?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+TheGreenOptimistic+%28The+Green+Optimistic%29#.UDbvH8FlT4Y By Ovidiu Sandru August 21, 2012 A new lithium ion battery developed in Korea could make those long waiting times for an electric car to charge become history. A team of researchers at the Ulsan National Institute of Science and Technology (UNIST) claim they can build a battery that can charge in less than a minute, 30 to 120 times faster than a classic Li-Ion battery. Read more »
Storage systems for renewable energy, Energy Harvesting Journal , 13 Aug 12, Energy storage systems are one of the key technologies for the energy turnaround. With their help, the fluctuating supply of electricity based on photovoltaics and wind power can be stored until the time of consumption.
At Karlsruhe Institute of Technology (KIT), several pilot plants of solar cells, small wind power plants, lithium-ion batteries, and power electronics are under construction to demonstrate how load peaks in the grid can be balanced and what regenerative power supply
by an isolated network may look like in the future.
“High-performance batteries on the basis of lithium ions can already be applied reasonably in the grid today,” says Dr. Andreas Gutsch, coordinator of the Competence E project. As stationary storage systems, they can store solar or wind power until it is retrieved by the grid. “When applied correctly, batteries can also balance higher load and production peaks and, hence, make sense from an economic point of view.”
The Competence E project is presently developing several pilot systems consisting of photovoltaics and wind power plants coupled to a lithium-ion battery. Over a development phase of two years, a worldwide battery screening was made. “Now, we know which lithium-ion cells are suited best for stationary storage systems,” says Gutsch.
The first stage of the modular systems will be constructed on KIT Campus North by the end of 2012. It will have a capacity of 50 kW…..
In a test building, they were able to increase “own consumption” – solar power used directly within the household without being exported to the grid
Home Solar Power Storage — Another Option Clean Technica, JUNE 15, 2012 BY ZACHARY SHAHAN In addition to the home storage option recently announced by Panasonic, below is another story about a some storage option that could greatly benefit those with cheap solar power on their rooftops in Germany (and some other locations). This is a full repost from the awesome site Renewables Read more »
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