The solar panels are connected to the battery (12v containing a charge controller and AC inverter) to chare it,
the founder of American Wind, will drive across the United states in an electric vehicle powered by four Microcubes without stopping even once to plug in the battery for a recharge.
800 watts per hour to keep its lithium-ion battery charged. While electric vehicles have been on the market for some time,
The team took advantage of 3d printing instant feedback and rapid prototyping to experiment with new shapes, printing speeds, battery technologies, cleaner burning fuels,
and separating GNP. 3d printed graphene battery by Graphene 3d Labdiscovered in 2004, graphene is considered a sort of oly grailin 3d printing and manufacturing materials.
and will allow an ever widening variety of manufacturers to consider incorporating the extraordinary qualities of graphene in wide range of materials from batteries to consumer electronics to plastics. s the most sought-after and groundbreaking material,
The OLO, for all intents and purposes, is powered a battery box (consisting of seven parts plus an engine) that fits on top of your Android, OS or Windows smartphone.
and battery power source (standard AA 1. 5v that last for at least 100 printings), it is also ideal for anyone who is traveling
with a portable PV and battery power supply system. Dr. Wong, who graduated from Harvard and participated in the Made in Space-NASA program for solar-powered 3d printing in space,
using either a solar power-charged battery or solar panels as power sources. The 2nd generation Cube 3d printer was selected for its portability, because of its small size and low weight,
while a specific inverter is included in the kit in case the standard Mars analogue mission battery pack cannot be transported on the plane due to varying airline regulations
and acid batteries need to be obtained locally. The dental tool required only 12 minutes and 9. 2 Wh of energy, the metal splint required 23 minutes and 17.6 Wh,
Both the habitat and the auto also house their respective batteries for long-term storage, allowing one to feed off the energy supply of the other. n essence, most of the time,
What wee doing is taking a different approach to battery storage where the batteries wee using for this project were once a part of a vehicle.
and as hydrogen storage materials in next generation batteries. i
#Telomeres Implicated In Premature Aging Scientists have established successfully a comprehensive model of rare accelerated aging disorder, Hutchinson-gilford progeria syndrome (HGPS), opening up the possibility of treatment for the rare disease.
and batteries to help maintain optimal performance. With the number of smartphone users expected to reach more than 2 billion worldwide by 2016,
while supercapacitors have the potential to charge faster and last longer than conventional batteries, they also need to be much larger in size
and mass in order to hold the same electric energy as batteries. Thus, many scientists are working to develop green, lightweight, low-cost supercapacitors with high performance.
Conventional batteries on the other hand, are the opposite. They have high energy density or can store a lot of electric energy, but can take hours to charge and discharge.
Supercapacitors are a bridge between conventional capacitors and batteries, combining the advantageous properties of high power, high energy density and low internal resistance,
which may replace batteries as a fast, reliable and potentially safer power source for electric and portable electronic devices in future, said Singh.
#Real-time Nanoscale Images of Lithium Dendrite Structures That Degrade Batteries Scientists at the Department of energy Oak ridge National Laboratory have captured the first real-time nanoscale images of lithium dendrite structures known to degrade lithium
-ion batteries. The ORNL team electron microscopy could help researchers address longstanding issues related to battery performance and safety.
ORNL electron microscopy captured the first real-time nanoscale images of the nucleation and growth of lithium dendrite structures known to degrade lithium-ion batteries.
CREDIT: ORNL Dendrites form when metallic lithium takes root on a battery anode and begins growing haphazardly.
If the dendrites grow too large, they can puncture the divider between the electrodes and short-circuit the cell,
resulting in catastrophic battery failure. The researchers studied dendrite formation by using a miniature electrochemical cell that mimics the liquid conditions inside a lithium-ion battery.
Placing the liquid cell in a scanning transmission electron microscope and applying voltage to the cell allowed the researchers to watch as lithium depositshich start as a nanometer-size seedrew into dendritic structures. t gives us a nanoscopic view of how dendrites nucleate and grow,
and more importantly, correlate that to the measured performance of a battery, said Robert Sacci,
when you run a battery over many charge-discharge cycles, you typically wait until things start failing
The study is published as anoscale Imaging of Fundamental Li Battery Chemistry: Solid electrolyte Interphase Formation and Preferential Growth of Lithium Metal Nanoclusters.
and Power of Lithium-Ion Batteries One big problem faced by electrodes in rechargeable batteries, as they go through repeated cycles of charging
degrading the battery performance over time. Now a team of researchers at MIT and Tsinghua University in China has found a novel way around that problem:
and provide a dramatic boost in the battery capacity and power. The new findings, which use aluminum as the key material for the lithium-ion battery negative electrode,
or anode, are reported in the journal Nature Communications, in a paper by MIT professor Ju Li and six others.
Most present lithium-ion batteries the most widely used form of rechargeable batteries use anodes made of graphite, a form of carbon.
As a result, previous attempts to develop an aluminum electrode for lithium-ion batteries had failed.
hat separates the aluminum from the liquid electrolytebetween the battery two electrodes. The shell does not expand
For applications that require a high power-and energy density battery, he says, t probably the best anode material available.
the most attractive point of this work is that the process appears simple and scalable. here is much work in the battery field that uses omplicated synthesis with sophisticated facilities,
but such systems re unlikely to have impact for real batteries. Simple things make real impact in the battery field. he research team included Sa Li, Yu Cheng Zhao,
and Chang An Wang of Tsinghua University in Beijing and Junjie Niu, Kangpyo So, and Chao Wang of MIT.
Thus, the patented materials can be used both in the development of catalysts as well as storage batteries or other energy types p
#Researchers Visualize Nano-Sized Gateways That Control Activity of Mitochondrial Battery Mitochondria are referred often to as the powerhouses of our cells,
because they generate chemical energy similar to that obtained from a battery. Whether it's a brain,
nano-sized gateways control the activity of the mitochondrial battery, by carefully allowing certain proteins
#Quantity, Dimensions of Carbon black Nanoparticles Crucial for Lithium-Ion Battery Function A Stanford undergraduate has contributed to a discovery that confounds the conventional wisdom in lithium-ion battery design,
the team explained how a material previously considered secondary in importance was actually critical to overall battery performance,
and also devised new design rules for better batteries. Graduate student Yiyang Li and undergraduate Sophie Meyer led the collaborative effort to design experiments that disproved an assumption shared by battery designers for more than 20 years:
While lithium-ion batteries needed a substance called carbon black in order to function, the precise amount of that material had not been considered crucial to overall performance."
"Our research demonstrated that isn't true, "said Meyer, who started the experiments when she was a sophomore with no prior experience in materials science.
for supervising Meyer over two years of experiments that included the construction of scores of batteries from scratch
Lithium-ion batteries have been used commonly in laptop and tablet computers, electric vehicles and renewable energy systems for more than two decades.
These batteries typically contain cathode particles through which the electrons flow, an action that enables the battery to charge.
These cathode particles are composed typically of lithium iron phosphate or lithium cobalt oxide, mixed together with carbon black,
Prior to the team's research, the quantity and dimensions of the carbon black nanoparticles weren't considered particularly crucial to a battery's function."
"The industry standard for lithium-ion batteries is a low carbon model say, 5 percent of the total material by weight,
something that varies a great deal within a battery.""Li said that by upping the percentage of carbon black as high as 20 percent in some experiments they found that the cathode particles charged more quickly
So although a battery with a higher carbon black content might charge faster, it would also have less energy
These results point toward possible future experiments to further optimize battery design. But such research would not be emphasized possible,
Li and Meyer worked with their teammates to fabricate hundreds of batteries with different concentrations of carbon black.
Each battery had to be analyzed for composition and performance. Among other things, that required the evaluation of nanometer scale images of the battery materials obtained through Lawrence Berkeley National Laboratory's synchrotron
the Advanced Light source.""I had a lot of questions, and I read a ton of papers in the field,
"Then we had to figure out how to make the batteries: what ratio of carbon black to lithium iron phosphate to polymer binder to use;
Engineers are presently trying to develop nanomaterial-based memory chips that perform better than their silicon counterparts to be used in low energy data centers and gadgets with a longer battery life.
The security tag consists of a paper tag with an embedded battery and two coloured LEDS.
Lower power consumption also leads to longer battery life.""A problem with wearable devices like smart watches is that they have short operating times
because they are limited to using small batteries. With this magnetic field human body communication system, we hope to significantly reduce power consumption as well as how frequently users need to recharge their devices,
A battery in the device is recharged continually by a Freevolt energy harvester. The technology which has been patented, could now be used by organisations such as supermarkets
The same thing could be achieved with a battery and low-power transmitter.""He says there are also questions to answer about the possible impact on the mobile networks,
Porsche showed the prototype of its first battery-powered sports car, titled"Mission E."Similar in appearance to its iconic 911,
Mr Yates said. he emergence of battery technology in particular is likely to be a game changer for commercial solar,
With battery storage this could be boosted to over 70 per cent, an indication of the scale of the potential benefits for commercial solar.
#New Battery technology Will Fundamentally Change The Way The Grid Operates Originally published on Energy Post.
By Michael Mcelfreshthe spread of cost-effective batteries, such as Tesla new Powerwall, will fundamentally change the way the electric grid operates,
batteries in homes and businesses will transform how people and businesses treat electricity. Along the way, these batteries will improve the efficiency and reliability of the grid overall.
Right now, most power is generated at large power plants and distributed to consumers. Electric energy storage allows a two-way flow of power
For an individual consumer, having a battery behind the meter provides a great deal of flexibility in managing energy use.
Batteries allow consumers to cut their electric bills by reducing how much power they consume during peak hours when power costs more,
Homes with rooftop solar panels and batteries can actually use energy from their solar systems during power outages and
and then sell stored energy from batteries when prices are high. This practice, known as arbitrage
EV batteries can hold a significant amount of energy. The Nissan leaf for example, holds 24 kilowatt-hours,
Standards will finally make it possible to use the EV battery in two-way operation with utilities.
If utilities could draw on the energy stored in behind-the-meter batteries and EVS, it could have a range of benefits.
#Solid-state Lithium-O2 Battery Featuring Integrated Electrolyte+Cathode Structure Shows Potential A new solid-state lithium-O2 battery featuring an integrated electrolyte+cathode structure developed by researchers at the Hong kong
The new battery was developed with the intention of dealing with two of the primary issues facing conventional solid-state Li-air battery performance:
The battery features considerably improved internal resistance (reduced), and an increase in triple-pause boundaries.
These were achieved via the use of a much thinner electrolyte layer than is used conventionally (around 10%the thickness of those used in conventional batteries),
As a result, the battery outputs a discharge capacity as high as 14,200 ma h g-1carbon at 0. 15 ma cm-2,
The novel integrated electrolyte and cathode structure represents a significant step toward the advancement of Li-O2 batteries.
As ever, new battery technology reakthroughsare a dime a dozen these days, so while certainly worth taking note of,
500 milliamp-hour battery (7500 mah) for the times there is no wind. hat less than one charge for a laptop,
so you can carry it with you as a reserve battery wherever you are added Agust.
000 mah battery, which Agust says would power a laptop all day. Einar added that the 2,
A 10.4 kilowatt-per-hour battery pack lasts 150 to 200 miles on a single charge, according to Lit Motors.
'Yolk and shell'battery technology could end long waits while devices power up It is a problem almost everyone with a smartphone has faced at some point their device is almost out of battery
and there is not enough time to charge it before heading out for the evening. But a new type of battery made with tiny capsules filled with aluminium could soon mean smartphone users will be able to fully charge their device within six minutes of plugging it in.
The battery also has four times the capacity of current lithium ion batteries and degrades less over time.
This'yolk and shell'overcomes previous problems experienced with using aluminium in rechargeable lithium ion batteries in the past.
While current lithium ion batteries use graphite a form of carbon it has limited a storage capacity. Metals like lithium can store 10 times as much energy
but are unstable and can often catch fire or short circuit. Aluminium has been known to be another high capacity material
and reduces the battery's capacity over time. By encasing the aluminium yolk inside a shell,
the researchers explained the shell can keep the aluminium protected from the electrolyte in the battery
When these nanoparticles are used as the anode in a lithium ion battery, the researchers found it had a storage capacity of 1. 2 ampere-hours per gram.
A lithium ion battery using graphite has a storage capacity of 0. 35 ampere-hours per gram. The researchers also found they could achieve very fast charging times with the'yolk and shell'battery
with a full charge in just six minutes. However, this reduces the capacity of the battery by half to 0. 66 ampere-hours per gram, still tice that of graphite batteries.
Professor Li said:''It's probably the best anode material available. i
#Perseids meteor shower will show hundreds of shooting stars across Europe Stargazers across Britain were treated to a stunning lightshow overnight as hundreds of shooting stars filled the sky as the annual Perseids meteor shower neared its peak.
Like the original flying version, the tiny drone has to be attached to a power source as it is too small to house a battery.
and is covered by a scratch resistant hardened glass. the dial has a rechargeable lithium polymer battery,
the american electric automotive company went beyond cars to create a battery system centered on household consumption needs. the tesla owerwallis not only described as a game changing innovation
and are sufficient to power most homes during peak evening hours the batteries inside are a step towards revolutionizing the way people generate,
CEO elon musk believes the owerwallwill aid the development of remote communities. he speculates the batteries will help people in emerging markets or remote locations to eapfrogthe need for existing power systems,
the lithium ion batteries will allow owners to store energy generated during the day and use it at night,
dead batteries and charging cords will soon be a quaint memory, much like rotary dial telephones.
this vibration is converted back into an electrical charge to power anything with a battery, no wires or wall plugs required.
if he forgets to change his hearing-aid battery, she notes of the technology broad potential.
battery-powered tools at construction sitesevices would always be charged and ready to go. Offices too, now designed by necessity around fixed infrastructure like wall sockets,
and harnessed as energy in a fuel cell. The findings offer the possibility that wastewater could be treated effectively on-site without the risks
Each patient was administered a 30-minute test battery at the time of the office visit to assess their cognitive status. The LBCRS was completed after all other rating scales were scored
a process required for fuel cells. The latest discovery detailed in Nature Communications, is a significant step toward lower-cost catalysts for energy production, according to the researchers."
Platinum is used as a catalyst in fuel cells, in automobile converters and in the chemical industry because of its remarkable ability to facilitate a wide range of chemical reactions.
which"poisons"the desired reactions, for example in polymer electrolyte membrane (PEM) fuel cells, which are the leading contenders for small-scale and mobile power generation not based on batteries or combustion engines.
The Tufts researchers discovered that dispersing individual, isolated platinum atoms in much less costly copper surfaces can create a highly effective
"Environmental Benefits Because platinum is at the center of many clean energy and green chemicals production technologies, such as fuel cells, catalytic converters,
In the early 2000s, Maria's group had pioneered the single-atom approach for metals anchored on oxide supports as the exclusive active sites for the water-gas shift reaction to upgrade hydrogen streams for fuel cell use.
#Accidental nanoparticles could let lithium ion batteries live another day A new study from MIT could keep lithium ion battery technology on the track for another few laps,
The breakthrough comes from an accidentally created synthetic metal nanoparticle that could solve some of the oldest problems for batteries.
scientists discovered that the main reason lithium ion batteries lose their capacity over many charge-discharge cycles has to do with expansion and contraction of the graphite electrodes at either end.
thus reducing the total available charge in the battery. This expansion problem is one of the reasons graphite has been used for so long
since it undergoes relatively little change throughout the battery use. In particular, aluminum has been a frequent candidate to replace graphite,
What is clear is need that lithium ion batteries a breakthrough like this to keep moving further into people lives.
if you could regularly drive an all-electric car for several years without much real risk of having to replace the battery pack,
Fully alternative technologies, from carbon-based batteries to supercapacitors to mini-nuclear charging, have been predicted to kill lithium ion for many years running,
Though Elon musk insists it will be at least somewhat modular to accept newer battery technologies the Tesla Gigafactory is built to create lithium ion batteries;
there is a significant economic incentive to keep improving lithium ion batteries, and to put off a large-scale switch as long as possible.
How long that stalling process can possibly continue will depend on how rapidly our power demands increase over time,
The aircraft's wings are covered by more than 17,000 solar cells that recharge the plane's batteries.
These are in the battery chargers and the inverters that convert the battery power to drive the electric motors.
The silicon transistors used today have constrained a power capability that limits how much power the car can handle.
Running blackberry 10, it is packed by a 2100 mah battery. Commenting on the launch, Hitesh Shah, Director of Sales and Distribution, at Blackberry India stated, ith the launch of the new P983 Graphite from Blackberry,
such as a display, keyboard or say the battery. The approach allows users to swap out malfunctioning modules
#Stanford Researchers Created A Smartphone Battery That Charges In Only One Minute Last year, emarketer reported that the global smartphone audience passed 1. 75 billion people.
the demand for longer-lasting batteries will continue to increase. Fortunately, researchers at Stanford university are building an aluminum-ion battery prototype that speeds up the charging times.
And the aluminum-ion battery could eventually replace many of the lithium-ion and alkaline batteries used in many smartphones today. e have developed a rechargeable aluminum battery that may replace existing storage devices, such as alkaline batteries,
which are bad for the environment, and lithium-ion batteries, which occasionally burst into flames, said Stanford university chemistry professor Hongjie Dai, the lead researcher of the project,
in an article by the Stanford Report. ur new battery won catch fire, even if you drill through it.
An aluminum-ion battery generally consists of two electrodes, one negatively charged anode made of aluminum and a positively charged cathode.
Professor Dai said that his team accidentally discovered that a simple solution is using graphite.
This is why the Stanford researchers placed the aluminum anode, a graphite cathode and an ionic liquid electrolyte inside of a polymer-coated pouch.
Researchers have been interested in developing a commercially viable aluminum-ion battery for decades, but efforts have been largely unsuccessful.
A major challenge with developing aluminum batteries is finding materials that produce sufficient voltage after repeated recharging cycles.
The ionic liquid electrolyte products used in Stanford aluminum battery pack are also slightly expensive because there is not enough demand for it.
Lithium-ion batteries are also potentially a fire hazard. This is why United airlines and Delta air lines banned bulk lithium battery shipments on passenger planes.
When Stanford drilled through its aluminum battery pouch it worked for a while longer without catching fire
which makes it much safer than lithium-ion batteries. Lithium-ion batteries also takes hours to charge,
but the aluminum-ion prototype at Stanford takes only one minute. The aluminum batteries developed at Stanford university are more durable than other batteries.
For example, aluminum batteries developed at other laboratories died after just 100 charge-discharge cycles. The aluminum battery developed at Stanford was able to withstand more than 7, 500 cycles without any capacity loss.
Lithium-ion batteries generally last about 1, 000 cycles. The aluminum battery is also flexible so it can be used in electronic devices that can fold and bend.
Aluminum batteries could be used for storing renewable energy on electrical grids. Electrical grids need batteries with a long cycle life to store
and release energy. Aluminum-ion technology is an environmentally friendly alternative to disposable alkaline batteries too.
The rechargeable aluminum battery created by Stanford researchers generates about two volts of electricity, the highest achieved with aluminum.
Before Stanford aluminum-ion battery is mass produced, the research team will have to improve the cathode material to increase the voltage and energy density.
The voltage of the aluminum battery made by the Stanford researchers is about half the average smartphone lithium battery.
The findings in the research will be published in a paper titled n ultrafast rechargeable aluminum-ion batteryfor the April 6th advance online edition of Nature. com. The other co-lead authors of the study
are Mengchang Lin (visiting scientist from Taiwan Industrial Technology Research Institute), Bingan Lu (visiting scientist from Hunan University) and Yingpeng Wu (postdoctoral scholar.
And the other authors are Di-Yan Wang (Stanford), Mingyun Guan (Stanford), Michael Angell (Stanford), Changxin Chen (Stanford), Jiang Yang (Stanford) and Bing-Joe
Hwang (National Taiwan Normal University. Here is a video about the development of aluminum-ion battery at Stanfor a
#That Self-driving car In Your Future Might Make You Sick Remember back when virtual reality was being touted as The next Big Thing the first time around?
Videogame maker Sega developed a mass-market head-tracking VR system and showed it to reporters and industry representatives with great fanfare at the 1993 winter Consumer electronics Show.
Oncor is using a small battery developed by Tesla motors. Microgrids are getting the attention of utilities, not as potential threats but as a possible complement to their business models.
#Why Tesla Batteries Are Cheap Enough To Prevent New Power plants Last year, analysts hired by Oncor Electric Delivery Company were toiling away on a study of the costs
and benefits of installing enormous batteries on Oncor grid in Texas. The benefits would surpass the costs,
if Oncor could buy batteries for $350 per kilowatt hour of capacityr less. That was the break even point.
At the time, the cheapest utility-scale batteries cost twice that much, the analysts noted, and some cost nearly ten times that much.
and the analysts predicted batteries might reach the $350 point in 2020. They didn have to wait nearly so long.
Tesla Powerwall home battery unveiled late Thursday night, dominated energy news all weekend, but the real news was the price tag on its utility-scale big sister, the Powerpack:
in which the nuclear critic Arnie Gundersen predicted Tesla new utility-scale battery would render new-build nuclear plants obsolete.
The battery would be cheap enough to solve the reliability problem of intermittent solar and wind,
Gundersen predicted the cost of the utility-scale battery would fall to 2 cents per kwh of the electricity that passes through it
Gundersen focused on the utility-scale battery, which we would soon learn to call the Tesla Powerpack,
but most of the chatter in the wake of Musk announcement focused on the home battery, the Tesla Powerwall,
Some writers noticed both batteries. he Tesla battery is better than I thought for homes,
wrote the author Ramez Naam in a review of Tesla new battery line. nd at utility scale,
At Tesla price, utility-scale batteries have the potential to perform better than 2 cents per kilowatt hour where it counts the most:
The capital cost of utility-scale batteries may be more than offset by their benefits, according to the Texas study,
Even modeling batteries $100 more than the Tesla, the Texas analysts concluded that storage arrayed across the grid should cause a typical consumer electric bill to fall slightlyrom $180 per month to $179. 66.
but it a remarkable number if one expects new capital expenditures on batteries to increase electricity bills. onsidering both the impact on electricity bills and improved reliability of grid-integrated storage,
Batteries eliminate those charges. 2. Customer Bill Offsets from Storage Merchant Value. Utilities would make batteries available to independent companies participating in regional wholesale energy markets,
auctioning off battery capacity and returning most of the proceeds to customers by reducing their bills. 3. Avoided Distribution Outages.
By preventing blackouts, batteries would save residential customers about $10 a year and commercial customers an average of $700 a year.
An example: Socore, a Southern California Edison subsidiary, is installing Tesla batteries at two Cinemark Theaters to keep them in business
when the power goes out.)4. Deferred Investments. Typically, utilities need enough power plants to serve their customers at peak hours, not at average hours.
By using batteries to serve peak loads, they can invest in fewer power plants. They can especially avoid firing up expensive eaker plants,
By deploying batteries along the grid where peak loads are greatest, they can also defer investments in transmission
Southern California Edison installed a battery in Orange, Cal. and found that it both improved reliability of the grid
And remember, that with hypothetical batteries up to $100 more expensive per kilowatt hour than Tesla. n this analysis,
Tesla Powerwall and other batteries for the home should produce similar benefits, but not as powerfully:
Tesla is offering the utility-scale batteries in 100kwh battery blocks that are grouped in packs from 500kwh to 10mwh+.
is also purchasing Tesla grid-level batteries. e will also be using the Tesla grid scale system,
and also as batteries improve. Gundersen based his 2¢estimate in part on improvements in cyclinghe number of times a battery can be drained
and rechargedhat Tesla is known to be working on, and that have begun already to appear in other batteries.
Analysts often assume batteries will cycle once per day, 1, 000 times. The Michigan company Xalt Energy markets a lithium-ion battery that it says can cycle 4, 000 to 8, 000 times.
Some lithium-ion batteries used to back up data servers are designed to cycle up to 10,000 times.
These achievements are likely to be exceeded soon by the next generation of batteries coming down the pipe.
More cycles mean longer battery life and lower cost per kwh. Booms, Busts And Billionaires: An ebook From Forbes Find out what happened to the oil industrynd where it headed next. oth solar
and batteries are not uelsbut rather technologies, Gundersen said. he extraction cost of fuels continues to rise,
while technology costs continue to fall. My Doctoral contacts at battery companies are confident that 2 cents is indeed here in the lab and on the horizon commercially.
It is all about the number of cycles that can be pulled from a battery. We still don know what cycling improvements Tesla has bundled into the Powerpack,
if any, and Tesla has responded not to a request for comment. Ramez Naam thinks that both Gundersen optimistic 2¢(for the Powerpack)
and my Forbes colleague Chris Helman pessimistic 50¢(for the Powerwall are outliers in the range of possibilities for the cost of electricity flowing through Tesla batteries.
If utilities get the same 10-year warranty Tesla offers to home customers, Naam estimates the Powerpack cost per kwh will be told 7,
Even at twice that price, he said, grid-level batteries offer utilities a return on investment now:
hat batteries bring positive ROI at such a price surprises lots of people. And it means windmills+batteries may be cheaper than nuclear plants right now,
with windmills+solar panels likely to follow e
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