A new report authored by Stephen Byrd, a utility and cleantech analyst at Morgan Stanley, and Adam Jonas, its auto analyst, shows that they are bullish on the market for grid storage products. “Demand for energy storage from the utility sector will grow more than the market anticipates by 2019–2020,” the pair says.
They predict the demand for grid-scale storage will increase from less than $300 million a year today to as much as $4 billion in the next 2–3 years because of the low price of wind and solar energytogether with the falling price of grid storage products.
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Tomi Engdahl says:
Researchers Look To Materials To Improve Micro-Grid Renewable Energy Storage
Liquids, molten metal elements, salt water, and chemicals are being studied as sources for new batteries.
http://www.electronicdesign.com/power/researchers-look-materials-improve-micro-grid-renewable-energy-storage?NL=ED-004&Issue=ED-004_20170817_ED-004_354&sfvc4enews=42&cl=article_1_b&utm_rid=CPG05000002750211&utm_campaign=12523&utm_medium=email&elq2=ab7a9c76151f484083a0f25cf82a8356
Researchers are hard at work looking to come up with a battery technology that meets the economic and consumer needs of a rapidly growing demand for renewable energy storage of the micro-grid. Energy would come from the sun, wind, batteries, and other sources. They’re examining promising results from batteries using liquid, molten metal elements, salt-water, iron flow, zinc, lithium-air, and other chemistries to satisfy the needs of the electrical grid
A 2012 study in Nature Magazine found that the average American would only be willing to pay about $13 more each month to ensure that the entire electrical grid could allow the U.S. electrical supply to run on renewable battery energy. That means utilities must be able to provide grid-level energy storage that would cost them less than $100 per kW-hour. According to Bloomberg New Energy Finance, battery prices continue to rapidly fall.
Presently, that rate is hundreds of $/kWh. According to many experts, it has to come down to under $100/kWh for batteries based on liquid, molten-metal, salt water, and other chemistries to be competitive in the market.
That hasn’t stopped researchers for trying to achieve that price goal.
Some success has been achieved getting renewable energy storage on the market.
What’s Ahead?
As more of the aforementioned efforts in battery experimentations make headway, it may take quite a while before the battery that powers consumer electronics items becomes a reality. Let’s face it, the venerable battery technology most of us are familiar with will not improve much more, resulting in a smaller size, greater energy densities, greater reliability, and, of course, at an acceptable cost. It’s all about greater knowledge and application of chemistry. And flow battery technology, which has been around for four decades, may be one answer.
Tomi Engdahl says:
Can Supercapacitors Surpass Batteries for Energy Storage?
http://www.electronicdesign.com/power/can-supercapacitors-surpass-batteries-energy-storage
Advances in supercapacitors are delivering better-than-ever energy-storage options. In some cases, they can compete against more-popular batteries in a range of markets.
A supercapacitor is a double-layer capacitor that has very high capacitance but low voltage limits. Supercapacitors store more energy than electrolytic capacitors and they are rated in farads (F).
Supercapacitors have many advantages. For instance, they maintain a long cycle lifetime—they can be cycled hundreds of thousands times with minimal change in performance. A supercapacitor’s lifetime spans 10 to 20 years, and the capacity might reduce from 100% to 80% after 10 or so years. Thanks to their low equivalent series resistance (ESR), supercapacitors provide high power density and high load currents to achieve almost instant charge in seconds. Temperature performance is also strong, delivering energy in temperatures as low as –40°C.
On the other hand, supercapacitors are offset by their low energy density. Thus, they can’t be used as a continuous power source. One cell has a typical voltage of 2.7 V; if higher voltage is needed, the cells must be connected in series.
Supercapacitors are used in many power-management applications requiring many rapid charge/discharge cycles for short-term power needs.
Different materials, such as various carbon materials, mixed-metal oxides, and conducting polymers, have been used for supercapacitor electrodes. Advances in carbon-based materials, namely graphene, increase the energy density to nearly the level of batteries.
Though a single supercapacitor cell will provide 2.7 V, higher voltages can be achieved by connecting several supercapacitors in series. Just as with lithium-ion batteries, supercapacitors in a stack might not have the same capacitance due to manufacturing or uneven aging. Strings of more than three capacitors require voltage balancing to ensure long operational life, preventing overvoltages by keeping the voltage on each cell as low as possible to achieve the needed total stack voltage.
Engineers can choose from various devices designed specifically to manage the unique requirements of supercapacitor charge, depending on the application.
Tomi Engdahl says:
Energy-storage options: abundant alternatives and tricky tradeoffs
http://www.edn.com/electronics-blogs/power-points/4458735/Energy-storage-options–abundant-alternatives-and-tricky-tradeoffs?utm_content=bufferd8b0e&utm_medium=social&utm_source=plus.google.com&utm_campaign=buffer
Even when the source is perceived to be “free” (of course, there is no such thing) due to use of energy harvesting, solar power, or wind generation, there are almost always two associated issues: storing unused excess energy, and transmission of that energy. While the generation gets much of the public’s attention, the other two factors in the triad are equally important. The technical realities and economics of renewable “green” sources change dramatically when you can’t store any unused energy for use during slack periods.
Energy storage turns out to be an especially difficult problem as you scale up to larger and larger numbers, and is generally much more difficult than the transmission problem.
The leading options for storage are batteries (usually lithium based), pumped hydropower, flywheels, and compressed air. Batteries have received a lot of attention, especially due offerings such as Tesla’s Powerwall system for residential backup. As in most things “engineering,” and even putting cost aside for now (which you can’t do in the real world), each option has some subtle tradeoffs in up-front effort, capacity, maintenance issues, and long-term attractiveness. For example, batteries may have a life of only five or 10 years, and that number is likely dependent on the usage cycling.
while storage is certainly not an intractable problem, it’s difficult to solve while satisfying conflicting goals. Every aspect of the design (siting, installation, and long-term support) gets much more difficult as you scale up into the tens, hundreds, and perhaps even thousands of kWhr range. Any problems or mistakes tend to be large-scale, with no easy fixes
Tomi Engdahl says:
A 110 kWh Powerbucket
https://hackaday.io/project/12296-a-110-kwh-powerbucket
The lead-acid batteries of my off-grid solar system are dead. I will replace them by a 18650 batteries stack housed in a big wooden box.
My PV system works fine, but the lead-acid batteries have proven to be the weakest part of the design by far. Efficient 18650 lithium ion batteries are available at affordable prices, so why not change now ?
This new LiIon battery will replace the 8 heavy lead-acid batteries currently installed (500 Kg). Theses batteries are housed in a big battery box. See the battery box here: https://cdn.hackaday.io/images/3076021414333246017.jpg
Once fully populated with LiIon elements, the Powerbucket will store 110 KWh of energy, enough to cover the needs of my house during 11 days. For comparison, a Tesla Model S 85D has a 85 KWh battery. The complete battery stack will be made of 11 strings of 15 X 70 = 11 550 cells.
The first phase of this challenging project will be to design and build the first 10 KWh string made of 15 X 70 = 1050 cells. I will design the Battery Management System in DIY mode.
Tomi Engdahl says:
Researchers Look To Materials To Improve Micro-Grid Renewable Energy Storage
Liquids, molten metal elements, salt water, and chemicals are being studied as sources for new batteries.
http://www.powerelectronics.com/power-management/researchers-look-materials-improve-micro-grid-renewable-energy-storage?NL=ED-003&Issue=ED-003_20170821_ED-003_809&sfvc4enews=42&cl=article_1_b&utm_rid=CPG05000002750211&utm_campaign=12558&utm_medium=email&elq2=10c745d0a8244aadaf1f1b330b981bb7
Researchers are hard at work looking to come up with a battery technology that meets the economic and consumer needs of a rapidly growing demand for renewable energy storage of the micro-grid. Energy would come from the sun, wind, batteries, and other sources. They’re examining promising results from batteries using liquid, molten metal elements, salt-water, iron flow, zinc, lithium-air, and other chemistries to satisfy the needs of the electrical grid, according to information from Grist (www.grist.org) and the U.S. Dept. of Energy (https://energy.gov/).
High cost is a big problem, according to Eric Rohlfing, deputy director of technology for ARPA-E, a division of the Department of Energy that identifies and funds leading-edge R&D. Since it was established by former President Obama in 2009, ARPA-E has funded $85 million toward developing new batteries that can meet that goal.
Tomi Engdahl says:
A 2012 study in Nature Magazine found that the average American would only be willing to pay about $13 more each month to ensure that the entire electrical grid could allow the U.S. electrical supply to run on renewable battery energy. That means utilities must be able to provide grid-level energy storage that would cost them less than $100 per kW-hour. According to Bloomberg New Energy Finance, battery prices continue to rapidly fall.
Presently, that rate is hundreds of $/kWh. According to many experts, it has to come down to under $100/kWh for batteries based on liquid, molten-metal, salt water, and other chemistries to be competitive in the market.
Source: http://www.powerelectronics.com/power-management/researchers-look-materials-improve-micro-grid-renewable-energy-storage?NL=ED-003&Issue=ED-003_20170821_ED-003_809&sfvc4enews=42&cl=article_1_b&utm_rid=CPG05000002750211&utm_campaign=12558&utm_medium=email&elq2=10c745d0a8244aadaf1f1b330b981bb7
Tomi Engdahl says:
DIY Powerwall Builders Are Using Recycled Laptop Batteries to Power Their Homes
https://motherboard.vice.com/en_us/article/kzz7zm/diy-powerwall-builders-are-using-recycled-laptop-batteries-to-power-their-homes
Tomi Engdahl says:
Simple DIY Powerwall using $1 LG 18650 eBay Cells
https://www.youtube.com/watch?v=g7V9XQ34chc
DIY Power Wall – Terminals #4
https://www.youtube.com/watch?v=sP3gJRVLii0
Tomi Engdahl says:
Energy-storage options: abundant alternatives and tricky tradeoffs
http://www.edn.com/electronics-blogs/power-points/4458735/Energy-storage-options–abundant-alternatives-and-tricky-tradeoffs
Tomi Engdahl says:
Listen Up: Energy Storage is the Home Appliance of the Future
http://www.renewableenergyworld.com/articles/2017/08/listen-up-energy-storage-is-the-home-appliance-of-the-future.html
Twenty years ago, the problem with rooftop solar was that customers needed a large collection of lead acid batteries to store their daytime energy and use this energy at night. But simple net metering rules made it possible for the electric grid to function as a 100 percent efficient storage device. Unfortunately, utilities are doing everything they can to eliminate net metering so they can maximize their profits. So the compelling need for battery storage linked with rooftop solar has re-emerged.
Tomi Engdahl says:
Ex-Sun Microsystems Tech Guru Backs Startup to Solve Next-Gen Battery Needs
https://www.designnews.com/electronics-test/ex-sun-microsystems-tech-guru-backs-startup-solve-next-gen-battery-needs/153300393657377?ADTRK=UBM&elq_mid=875&elq_cid=876648
Notable ex-Silicon Valley tech guru Bill Joy is backing the design of new battery technology that is aimed at solving the problem of next-generation energy storage once and for all with a polymer electrolyte material.
Tomi Engdahl says:
Battery Management Module Hacked for Lithium-Iron Battery Bank
https://hackaday.com/2017/09/14/battery-management-module-hacked-for-lithium-iron-battery-bank/
In a departure from his usual repair and tear down fare, [Kerry Wong] has set out on a long-term project — building a whole-house battery bank. From the first look at the project, this will be one to watch.
Most battery banks designed for an inverter with enough power to run household appliances rely on lead-acid batteries, although lithium-ion has certainly made some inroads. [Kerry] is looking to run a fairly small 1000-watt inverter, and his analysis led him to lithium-iron cells.
Modifying a 4S 100A LiFePO4 BMS Module
http://www.kerrywong.com/2017/09/10/modifying-a-4s-100a-lifepo4-bms-module/
For those who are following my YouTube channel, you would know that I am in the process of building a high capacity battery bank. When this project is done, I plan to use it with a 12V inverter as my backup generator in the event of a power failure. For the battery bank, I used eighty 3.2V 5.5Ah 32650 lithium iron phosphate (LiFePO4) batteries. These are arranged into 4 groups in series and each group consists of 20 cells paralleled together forming a 12.6V 110Ah battery bank.
Like lithium ion batteries, lithium iron phosphate batteries require proper battery management system (BMS) to protect cells from overcharged or over discharged and also to ensure voltages among the cells in series are properly balanced. For my project, I decided to use an inexpensive off-the-shelf LiFePO4 BMS module. Since I intended to use the battery bank for a maximum load of around 1kW, I would need a BMS that can handle at least 80A discharge current continuously. And to charge the 110Ah battery bank, the charging current the BMS module must be able to withstand should be at least 6A (at 20C rate).
Tomi Engdahl says:
A Hybrid Approach to Energy Storage
http://www.electronicdesign.com/power/hybrid-approach-energy-storage?NL=ED-003&Issue=ED-003_20171018_ED-003_184&sfvc4enews=42&cl=article_2_b&utm_rid=CPG05000002750211&utm_campaign=13624&utm_medium=email&elq2=c97e193fb6c841159a02a74912e573aa
Although it is common to find supercapacitors in many power-electronics devices, hybrid energy storage technology could increase the commercial adoption of supercapacitors in grid-scale solutions.
Today, supercapacitors are found in many electronic applications. In automotive applications alone, they are used in startup systems, energy recovery solutions, and fast charge-discharge systems, to name a few. Supercapacitors can charge/discharge quickly without losing energy storage capacity over time. They also have very high power density. In contrast, batteries can store larger amounts of energy but they have a defined cycle life. A combination of batteries and supercapacitors results in a hybrid energy storage system that could help meet the needs of myriad renewable energy applications.
Supercapacitors can assist in delivering peak power while improving the performance of batteries in energy storage systems. Many supercapacitor manufacturers, utility companies, and researchers are developing hybrid capacitor-battery energy storage systems for future projects. Some are already using them in case studies and pilot projects, such as the one built by Duke Energy at its Rankin Substation in Gaston County, N.C.
Tomi Engdahl says:
6 Promising Energy Storage Options to Tie into the Grid
http://www.powerelectronics.com/alternative-energy/6-promising-energy-storage-options-tie-grid?NL=ED-003&Issue=ED-003_20180217_ED-003_122&sfvc4enews=42&cl=article_1_b&utm_rid=CPG05000002750211&utm_campaign=15383&utm_medium=email&elq2=d811ae69a999449897e9a21baba282c8
Renewable energy storage solutions have shown remarkable progress in recent years, as the following list demonstrates.
There are some different storage solutions that have been developed over the last few years that can be incorporated into the grid no matter the power or energy requirements—from generation to consumer end use. With that being said, here are six current trending energy storage options that can be implemented into the grid.
1. Tesla Powerwall/Powerpack
Tesla’s Powerwall and Powerpack are highly efficient lithium-ion rechargeable battery platforms, with the Powerpack intended for home use and Powerwall designed for commercial or grid use.
2. Redox flow battery
Another advanced energy storage solution is redox flow batteries (fuel cell), which replace solid electrodes with energy-dense electrolytic compounds (hydrogen-lithium bromate, bromine-hydrogen, organic, etc.) separated by a membrane that charge and discharge as the liquids circulate in their own respective space.
3. Flywheel energy storage
Flywheel energy storage functions by accelerating a rotor to high speed and maintaining the power as rotating energy. When that energy is drawn from the system, the flywheel rotational speed is reduced and accelerated when energy is reintroduced
can spin up in a matter minutes to 20,000 to 50,000 RPMs, reaching their energy capacity more quickly than other forms of storage
4. Compressed air energy storage
Compressed air energy storage (CAES) plants are similar to pumped hydro power plants; only instead of pumping water from a lower to an upper pond, ambient air is compressed and stored under pressure in underground caverns to store energy. When that energy is required, the pressurized air is heated and expanded in a turbine
5. Thermal energy storage
There are several different types of thermal energy storage, including latent energy storage and thermal-chemical. However, sensible storage is the most used and often paired with solar power plants. A sensible heat system uses a liquid or solid medium: Water, sand, rocks or molten salt are either heated or cooled to store collected energy.
6. Pumped hydroelectric storage
Pumped hydroelectric storage stores energy using water contained in an upper reservoir that is electrically pumped from a lower reservoir. During peak electrical demand, additional power is produced by releasing the stored water through turbines in the same manner as a traditional hydroelectric dam.
Tomi Engdahl says:
Electrochemical Technology Dominates in Energy Storage Systems
https://www.powerelectronics.com/alternative-energy/electrochemical-technology-dominates-energy-storage-systems?PK=UM_Classics11118&elqTrackId=c5006c1926f8420e989a56d05eb848e9&elq=53ae13bd87974668aa571ac834884408&elqaid=21136&elqat=1&elqCampaignId=18057&utm_rid=CPG05000002750211&utm_campaign=21136&utm_medium=email&elq2=53ae13bd87974668aa571ac834884408
Electrochemistry is front and center when it comes to providing energy storage for utility power. Commercial versions are available now, with ongoing research aimed at developing improved systems.
Tomi Engdahl says:
DoE Reveals New Projects to Extend Grid Energy Storage
https://www.powerelectronics.com/alternative-energy/doe-reveals-new-projects-extend-grid-energy-storage?PK=UM_Classics11118&elqTrackId=c5006c1926f8420e989a56d05eb848e9&elq=53ae13bd87974668aa571ac834884408&elqaid=21136&elqat=1&elqCampaignId=18057&utm_rid=CPG05000002750211&utm_campaign=21136&utm_medium=email&elq2=53ae13bd87974668aa571ac834884408
Ten projects announced by the U.S. Department of Energy focus on developing storage systems to provide reliable, affordable power to create a more resilient, higher-performance electric grid.
Tomi Engdahl says:
The cost of energy storage has stalled adoption of renewable power. Energy Vault has a solution.
https://techcrunch.com/2018/11/07/the-cost-of-energy-storage-has-stalled-adoption-of-renewable-power-energy-vault-has-a-solution/?utm_source=tcfbpage&sr_share=facebook
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The cost of energy storage has stalled adoption of renewable power. Energy Vault has a solution.
Jonathan Shieber
@jshieber / 1 day ago
iowa farm wind energy
Because solar and wind power are now cheaper to produce than energy from fossil fuels, the only obstacle that remains to the mass adoption of renewable power is the amount of money utilities need to spend to store the energy those systems produce.
Right now, storing 100 megawatts of renewable energy (enough to power roughly 600,000 homes) means spending roughly $65.6 million on massive batteries like the kind made by Tesla, or relying on huge pumped hydro-electric storage projects that essentially create man-made dams where the release of water spins turbines to generate energy (those projects are typically far larger than 100 megawatts).
Tomi Engdahl says:
Timing Is Everything When It Comes to Battery Charging
https://www.designnews.com/electronics-test/timing-everything-when-it-comes-battery-charging/5877038259950?ADTRK=UBM&elq_mid=6853&elq_cid=876648
Adding an electrical storage battery can save electrical costs. But unless regulations change, they may not help reduce greenhouse gas emissions.
One way for homeowners to reduce their monthly power bill is to install an electrical storage battery. By charging the battery when electrical rates are low, and then using the stored electricity when rates are highest, studies have shown that it is possible to save as much as 30% on an electrical bill. Unless fundamental policy and regulatory reforms are undertaken, however, adding a storage battery could actually result in increased carbon dioxide emissions, according to a recent study reported in a University of California in San Diego news release.
The problem comes from the fact that the batteries draw their energy from the grid when it is the cheapest. The cheapest sources of electricity are often those, like coal-fired plants, that produce the most greenhouse gas emissions.
According to the UCSD study, for the battery systems to actually reduce greenhouse gases, utilities would need to change their tariff structures substantially—accounting for emissions from different power sources.
“We sought to answer: What if consumers on their own or in response to policy pressure adopt these systems? Would greenhouse gas emissions from the electric power system go down, and at what economic cost?” said lead author Oytun Babacan, a postdoctoral scholar at the School of Global Policy and Strategy, in the UCSD news release.
“Absent tariff reform, policymakers could still encourage environmentally beneficial operation of the devices by ensuring that system developers and equipment vendors favor clean energy use by tracking and adjusting to variations in marginal emissions across the bulk grid,” the authors noted in their study. Systems do not track or encourage such cost-effective emissions control right now, but the study authors indicated that such changes would improve the advantages of home-based electrical storage batteries.
Tomi Engdahl says:
Huge Battery Investments Drop Energy-Storage Costs Faster Than Expected, Threatening Natural Gas
https://www.forbes.com/sites/jeffmcmahon/2019/10/29/huge-battery-investments-drop-energy-storage-costs-threaten-natural-gas-industry/
Tomi Engdahl says:
The Hornsdale Power Reserve And What It Means For Grid Battery Storage
https://hackaday.com/2019/12/16/the-hornsdale-power-reserve-and-what-it-means-for-grid-battery-storage/
Renewable energy has long been touted as a major requirement in the fight to stave off the world’s growing climate emergency. Governments have been slow to act, but prices continue to come down and the case for renewables grows stronger by the day.
However, renewables have always struggled around the issue of availability. Solar power only works when the sun is shining, and wind generators only when the wind is blowing. The obvious solution is to create some kind of large, grid-connected battery to store excess energy in off-peak periods, and use it to prop up the grid when renewable outputs are low. These days, that’s actually a viable idea, as South Australia proved in 2017.
Tomi Engdahl says:
Sähkövarastojen rooli kasvaa, kun uusiutuvat energiantuotantomuodot ottavat isompaa roolia markkinoilla. Sähkön tuotannon ja kulutuksen on oltava koko ajan tasapainossa. Yhdessä Elenian kanssa pilotoimamme virtuaaliakku tarjoaa tähän ratkaisun.
Virtuaaliakku auttaa
- reagoimaan nopeisiin tuotannon ja kulutuksen vaihteluihin
- pitämään sähkökatkotilanteessa asiakkaalla valot päällä pitempään
- tukemaan uusiutuvien energiantuotantomuotojen kasvua markkinoilla
Lue lisää:
Fortumin ja Elenian akusto varastoi sähköä katkojen varalle ja sähköjärjestelmän tasapainon ylläpitoon
28 toukokuu 2020, 10:00
https://www.fortum.fi/media/2020/05/fortumin-ja-elenian-akusto-varastoi-sahkoa-katkojen-varalle-ja-sahkojarjestelman-tasapainon-yllapitoon?utm_source=facebook&utm_medium=paid&utm_campaign=elenia_akku
Fortum ja Elenia ottivat Kurussa Pirkanmaalla käyttöön yhteistyössä tuottamansa akuston, joka normaalitilanteessa toimii Fortumin kautta Fingridin kantaverkon säätövoimana ja sähkökatkossa Elenian asiakkaiden varavoimana.
Pilottiprojektissa Fortum ja Elenia rakensivat osana älykkään sähköverkon kehitystä sähkön varastointia varten akuston, joka palvelee sähköjärjestelmän tasapainon tarpeita ja auttaa sähkökatkossa pitämään sähköt asiakkailla pidempään päällä.
Tomi Engdahl says:
Virtual power plants are coming to California apartment buildings
Apartments are “an important new focus” for German company Sonnen
https://www.theverge.com/2020/8/27/21403271/virtual-power-plants-california-apartment-buildings-solar-energy
Tomi Engdahl says:
Why Vanadium Flow Batteries May Be The Future Of Utility-Scale Energy Storage
http://on.forbes.com/6180G7iZu
Earlier this year, the California Energy Commission (CEC) published a $20 million solicitation to fund research projects for the deployment of long-duration energy storage. The objective was to develop a clear understanding of the role that long-duration energy storage (10 hours or greater) can play in helping to meet the state’s mandates to decarbonize the electricity sector by 2045. Lithium-ion batteries were excluded from the solicitation.
The CEC selected four energy storage projects incorporating vanadium flow batteries (“VFBs”) from North America and UK-based Invinity Energy Systems plc. The four sites are all commercial or industrial facilities that want to self-generate power (like solar) and in some cases have the ability to operate off-grid. Invinity’s total scope is 7.8 megawatt-hours (MWh) of batteries across the four projects. Part of the objective is to be able to take those facilities off-grid for an extended period of time, to avoid interruptions to their power supply during grid outages.
Tomi Engdahl says:
Looks Like Elon Musk Is Plugging a Giant Battery Into the Texas Grid
It could supply enough energy to power 20,000 homes on a hot summer day.
https://www.popularmechanics.com/science/energy/a35770429/tesla-battery-texas-power-grid/
Tomi Engdahl says:
”Akkuteknologialla on keskeinen rooli sähköistymisessä”
Elämämme ovat täynnä erilaisia akkuja puhelimen akusta sähkötyökaluihin. Litiumioniakut ovat tällä hetkellä nopeimmin kasvava ja ehkä jopa kiinnostavin akkuteknologia. Tutuimmat käyttökohteet näille akuille ovat sähköautot, kännykät ja läppärit. Tämän teknologian ja sen vaatimien raakamateriaalien kysyntä kasvaa jatkuvasti, joten on tärkeää pohtia, miten akkuja tai niiden sisältämiä materiaaleja voi kierrättää.
https://www.dna.fi/fi/yrityksille/blogi/-/blogs/akkuteknologialla-on-keskeinen-rooli-sahkoistymisessa?utm_source=facebook&utm_medium=linkad&utm_content=artikkeli_akkuteknologialla_on_keskeinen_rooli_sahkoistymisessa&utm_campaign=pk_kampanja_trendit2021_21&fbclid=IwAR0ShY–Et7MwD1RpzsCWfS2HrGHG5h7g_oVEaWMgWUFKcDy7zLJJXTPQzI
Tomi Engdahl says:
World’s Largest Batteries – (Pumped Storage)
https://www.youtube.com/watch?v=66YRCjkxIcg
The vast majority of our grid-scale storage of electricity uses this clever method.
Electricity faces a fundamental problem that comes with pretty much any product that’s provided on-demand: our ability to generate large amounts of it doesn’t match up that closely with when we need it. The storage of electricity for later use, especially on a large scale, is quite challenging. That’s not to say that we don’t store energy at grid scale though, and there’s one type of storage that makes up the vast majority of our current capacity.
Tomi Engdahl says:
https://www.edn.com/using-gravity-for-energy-storage-viable-idea-or-impractical/
Tomi Engdahl says:
The Role of Energy Storage for the Zero-Emissions Goal
https://www.eetimes.com/the-role-of-energy-storage-for-the-zero-emissions-goal/
The Biden administration recently named Kelly Speakes-Backman, who previously served as CEO of the national Energy Storage Association (ESA), to the U.S. Department of Energy’s senior leadership team. The appointment highlights the strategic role that energy energy storage companies will play in achieving the global ambition to have a zero-emissions economy by 2050.
In an interview with EE Times, Ron MacDonald, President & CEO, Zinc8 Energy Solutions, told us why energy storage is central to our world’s modern energy ecosystem as it is critical to enable a resilient, efficient, sustainable, and affordable grid. Zinc8 Energy Solutions has developed battery technology that uses zinc and air as fuel and is working with the New York state on various installations. “Our technology resolves the intermittent and unpredictable nature of renewable energy sources such as wind and solar,” said MacDonald.
Energy storage is a critical factor as it can even out the variability of electrical energy and thus the efficiency of the entire system. The key factor in addition to storage capacity is the speed with which they can respond to signals.
Tomi Engdahl says:
https://www.solarquotes.com.au/blog/victorian-big-battery-fire-mb2099/
Tomi Engdahl says:
Renewable energy needs storage. These 3 solutions can help.
Storing renewable energy is key for a reliable low-carbon grid.
https://www.popsci.com/environment/renewable-energy-storage-technology/
Tomi Engdahl says:
Datakeskuksen akuilla voidaan tasata sähköverkon laatua
https://etn.fi/index.php/13-news/12522-datakeskuksen-akuilla-voidaan-tasata-saehkoeverkon-laatua
Eaton ja Microsoft tutkivat menetelmiä, joiden avulla datakeskukset voivat ansaita rahaa jo olemassa olevilla resursseilla sekä tukea samalla uusiutuvien energialähteiden laajempaa käyttöä sähköverkossa. Tekniikan ytimessä olevat EnergyAware-UPSit on kehitetty Suomessa. Microsoft pilotoi jo tekniikkaa Yhdysvalloissa.
Yritykset ovat laatineet asiasta teknisen dokumentin, jonka toisena kirjoittajana on Eatonin Critical Power Systems -yksikön teknologiajohtaja Janne Paananen. Hänen mukaansa ideana on hyödyntää sitä isoa energiapotentiaalia, joka datakeskusten UPS-järjestelmissä nyt makaa vain odottaen palvelimien sähkönsyötön katkoksia.
- UPSien ensisijainen tehtävä on edelleen turvata it-laitteiden sähkönsyöttö. Energianhallinta on lisäominaisuus, joka tuo lisäarvoa asiakkaalle, Paananen tarkentaa.
Tomi Engdahl says:
https://www.eaton.com/content/dam/eaton/products/backup-power-ups-surge-it-power-distribution/backup-power-ups/energyaware/eaton-energyaware-ups-brochure-BR153107EN.pdf
Tomi Engdahl says:
Solar and Battery Companies Rattle Utility Powerhouses How serious a threat to power companies is Tesla’s sweeping, distributed “Energy Plan”?
https://spectrum.ieee.org/tesla-energy-plan-power-batteries
Tomi Engdahl says:
Grid-Level Energy Storage And The Challenge Of Storing Energy Efficiently
https://hackaday.com/2022/04/06/grid-level-energy-storage-and-the-challenge-of-storing-energy-efficiently/
Although every electrical grid begins with the production of electricity, there are times when storing this power in some form instead of using it immediately is highly convenient. Today’s battery-powered gadgets are an obvious example of such time-shifting, but energy storage plays a major role on the grid itself, too, whether in electrochemical, mechanical or in some other form.
Utility-level energy storage is essential for not only stabilizing the grid, but also to time-shift excess energy and provide a way to deal with sudden spikes in demand (peak-shaving) plus demand drops by absorbing the excess energy. The health of the grid can essentially be regarded as a function of its alternating current (AC) frequency, with strong deviations potentially leading to a collapse of the grid.
Naturally, such energy storage is not free, and the benefits of adding it to the grid have to be considered against the expense, as well as potential alternatives. With the rapid increase of highly volatile electrical generators on the grid in the form of non-dispatchable variable renewable energy, e.g. wind turbines and PV solar, there has been a push to store more excess power rather than curtailing it, in addition to using energy storage for general grid health.
Types Of Storage
The Fengning pumped storage power station in north China’s Hebei Province. (Credit: CFP)
The Fengning pumped storage power station in north China’s Hebei Province. (Credit: CFP)
As mentioned, the biggest threat to grid stability comes in the form of loss of grid frequency, as this indicates a situation where connected generators and other inputs are no longer able to synchronize. The result of this is generally a cascading failure blackout which requires a slow and painful restart of the system to recover from. For this reason it is essential that on-grid storage is available that can respond to spikes and drops in demand so that supply and demand can be constantly adjusted.
These increases and drops in demand are highly dynamic, often requiring a response from an energy storage system within a matter of milliseconds, while other demand changes are more gradual and spaced out over the course of minutes to hours. For the fastest possible response, flywheel and battery storage are highly suitable, while pumped hydroelectricity storage (PHS) and compressed air energy storage (CAES) are suitable for more gradual ramp-up of energy absorption and release over longer periods of time.
When it comes to these grid stabilization systems, the actual cost of the energy is of secondary importance, as their primary function is to prevent the grid from collapsing. In that regard such storage systems are an integral part of the grid. This is different from the way that ‘grid storage’ has entered the public vernacular, in the sense of time-shifting large amounts of energy produced by renewable energy sources such as wind turbines and PV solar panels.
At its most extreme, a national grid is envisioned that uses nothing but variable renewable energy as well as hydroelectricity, while storing excess energy in grid storage to allow for time-shifting and release over the span of weeks to months as supply fluctuates. Naturally, in this scenario where dispatchable generators like thermal plants are replaced with mostly non-dispatchable sources and grid storage, a number of factors are essential. First is the system cost, followed by the operating cost, as these determine the price tag added to any energy released by these storage solutions.
Tomi Engdahl says:
Generating Electricity from Heat with No Moving Parts Record-high thermophotovoltaic efficiency exceeding 40 percent could lead to thermal batteries for power grids
https://spectrum.ieee.org/thermophotovoltaic
Tomi Engdahl says:
Nickel Cells Sell More-Affordable Hydrogen Power New fuel cell efficiently generates electricity without costly precious-metal catalysts
https://spectrum.ieee.org/precious-metal-free-fuel-cell
Tomi Engdahl says:
These plastic batteries could help store renewable energy on the grid
Startup PolyJoule wants to expand grid storage beyond lithium batteries.
https://www.technologyreview.com/2022/04/13/1049728/plastic-batteries-grid-storage/
A new type of battery made from electrically conductive polymers—basically plastic—could help make energy storage on the grid cheaper and more durable, enabling a greater use of renewable power.
The batteries, made by Boston-based startup PolyJoule, could offer a less expensive and longer-lasting alternative to lithium-ion batteries for storing electricity from intermittent sources like wind and solar.
The company is now revealing its first products. PolyJoule has built over 18,000 cells and installed a small pilot project using inexpensive, widely available materials.
The conductive polymers that PolyJoule uses in its battery electrodes replace the lithium and lead typically found in batteries. By using materials that can be easily created with widely available industrial chemicals, PolyJoule avoids the supply squeeze facing materials like lithium.
PolyJoule was started by MIT professors Tim Swager and Ian Hunter, who found that conductive polymers ticked some key boxes for energy storage
Tomi Engdahl says:
Batteries Are Already Helping Power Grids Weather a Hotter World
In California, batteries now contribute 60 times more to peak capacity than they did in 2017 — a sign of things to come elsewhere, too.
https://www.bloomberg.com/news/articles/2022-07-21/how-batteries-can-help-power-grids-withstand-heat-waves#xj4y7vzkg
Tomi Engdahl says:
Massive iron batteries could be key to displacing natural gas from the grid
VoltStorage’s iron-salt batteries help it land $24 million Series C from Cummins, the diesel engine giant
https://techcrunch.com/2022/08/11/massive-iron-batteries-could-be-key-to-displacing-natural-gas-from-the-grid/
Tomi Engdahl says:
Italian Company Opens First “CO2 Battery” Using Huge Energy Dome
The Energy Dome uses the gas to fill a huge bladder, ready for quick release of energy into the grid.
https://www.iflscience.com/italian-company-opens-first-co2-battery-using-huge-energy-dome-64156
Tomi Engdahl says:
2022—The Year the Hydrogen Economy Launched? The Inflation Reduction Act and the war in Ukraine pump billions into clean hydrogen R&D
https://spectrum.ieee.org/hydrogen-economy-inflation-reduction-act?share_id=7185987
Tomi Engdahl says:
Nature inspires greener generation of metal hydrides to make formic acid from CO2
https://www.chemistryworld.com/news/nature-inspires-greener-generation-of-metal-hydrides-to-make-formic-acid-from-co2/4016050.article
Tomi Engdahl says:
Tuulivoiman sähkö on varastoitava ja siksi vetyteknologialla on valtava kiire
Tuulivoimalla tuotettavaa sähköä on pian tuulisina aikoina liikaa ja tyynellä taas hinta nousee pilviin. On pystyttävä varastoimaan sähköä. Ratkaisuja on monia, mutta synteettisten polttoaineiden tuottaminen vedyn avulla on ainoa kunnolla skaalautuva. Se on nyt hyvin kallista, mutta on syytä olettaa hinnan laskevan kokemuksen myötä tuulivoiman tavoin. Tämä projekti on aloitettava heti. Se ei toteudu markkinaehtoisesti vaan tarvitaan valtiovallan ohjausta. Ollaan jo pahasti myöhässä.
https://verdelehti.fi/2021/08/26/tuulivoiman-sahko-on-varastoitava-ja-siksi-vetyteknologialla-on-valtava-kiire/
Tomi Engdahl says:
Tulevaisuuden energiajärjestelmässä varastointi on avainasemassa
https://www.fortum.fi/tietoa-meista/blogi/forthedoers-blogi/tulevaisuuden-energiajarjestelmassa-varastointi-avainasemassa
Tomi Engdahl says:
OL3:sella on akku, yksi euroopan suurimpiin kuuluva. Se 85MW/60MWh oleva. Sillä saa täydellä teholla sen 45 minsaa sähköä, vastaa tosin reilun 2 minsan tuotantoa ol3:sta.
Saksalaisten “EnspireMe” on vastaava pienempi.
https://www.youtube.com/watch?v=R84XFyvSbk0
https://www.tvo.fi/en/index/news/pressreleasesstockexchangereleases/2022/theoperationofthebatteryenergystoragesystemtostartduringthesummer.html
Tomi Engdahl says:
Akkuteknologiassa voi olla lähivuosina haasteena materiaalipula, eli maailmassa ei oo järkevästi saatavissa riittävästi litiumia niin että akkuja joka paikkaan visiota voisi tämän hetkisellä akkutekniikalla skaalata laajasti käyttöön. Tarvittaisiin pikaisesti muita varteenotettavia hyvin massavalmistettavia akkutekniikoita tai todella rajua investointia Litiumin jalostamiseen.
“there is only enough lithium to produce up to 14 million EVs in 2023, Reuters reports”
https://www.weforum.org/agenda/2022/07/electric-vehicles-world-enough-lithium-resources/
There is no actual shortage of lithium resources per se; it’s all a question of economic and political support for development.
https://www.bloomberg.com/opinion/articles/2022-01-26/lithium-is-in-short-supply-but-probably-not-for-long
Tomi Engdahl says:
#ElectronicsCreators #Solar #batterystorage
EEVblog 1502 – Is Home Battery Storage Financially Viable?
https://www.youtube.com/watch?v=YFKu_emNzpk
Running through the numbers to see if home battery storage is viable on my home.
And comparing Tesla Powerwall, Enphase IQ Battery, BYD LVS, and Greenbank battery pricing.
00:00 – Is Home Battery Storage Financially Viable?
00:45 – Energy consumption & production numbers
03:25 – What about hot water?
04:30 – Am I 100% grid-independent?
05:18 – How much does electricity cost?
06:10 – What size battery and what budget?
07:07 – 5 year or 10 year payback?
07:35 – What size battery?
08:34 – Battery storage price comparison.
10:01 – AC Battery. Tesla, Enphase.
10:40 – DC battery hybrid inverter storage
12:26 – Do I get blackouts in Sydney?
12:54 – DYD LVS battery
13:19 – CHEAP Greenbank battery
14:25 – Does a cheap battery pay for itself?
15:11 – Feeding Enphase microinverters into a Hybrid inverter?
17:17 – Longevity, Maintenance, Peak power, and depth of discharge all determine battery life.
18:44 – Conclusion
Tomi Engdahl says:
China turns on the world’s largest compressed air energy storage plant
https://newatlas.com/energy/china-100mw-compressed-air/
The world’s largest and, more importantly, most efficient clean compressed air energy storage system is up and running, connected to a city power grid in northern China.
The clean energy revolution will require huge amounts of energy storage, to buffer against the intermittent power delivered by solar and wind. Some of that will come in the form of big battery installations – but there’s a huge lithium supply shortage coming that’ll raise the price of lithium-based batteries and make it very tough for Tesla-style operations to handle a big chunk of the work.
China has diversified its efforts, and indeed just this week it switched on the world’s largest flow battery, a 100-MW, 400-MWh vanadium flow battery installed in Dailan that offers relatively low-cost energy storage without using any lithium. But according to Asia Times, China is planning to lean heavily on compressed air energy storage (CAES) as well, to handle nearly a quarter of all the country’s energy storage by 2030.
Now, after several years of development by the Chinese Academy of Sciences, it has connected the world’s first 100-MW advanced CAES system to the grid, ready to begin commercial service in the city of Zhangjiakou in northern China. By designating it as “advanced,” the Academy is distinguishing it from the McIntosh Plant that’s been online since 1991 in Alabama – a 110-MW CAES facility that burns its stored air with natural gas to recover energy, and is thus not a green energy storage solution.
The new Zhangjiakou plant does away with fossil fuels, using advances in supercritical thermal storage, supercritical heat exchange, high-load compression and expansion technologies to boost system efficiency. According to China Energy Storage Alliance, the new plant can store and release up to 400 MWh, at a system design efficiency of 70.4%.
That’s huge; current compressed air systems are only around 40-52% efficient, and even the two larger Hydrostor CAES plants scheduled to open in California in 2026 are only reported to be around 60% efficient.
Tomi Engdahl says:
https://yle.fi/uutiset/3-12593341
Euroopan syvin kaivos Pyhäjärvellä halutaan muuttaa tahkoamaan sähköä – ennen pumppuvoimalaa ei nähty kannattavana, nyt tilanne on toisin
Pyhäsalmen kaivoksen malmivarat ovat lopussa ja nyt puolitoista kilometriä syvä luolasto aiotaan muuntaa energiavarastoksi. Sähkömarkkinoiden nopea muutos teki pitkään valmistellusta hankkeesta taas kiinnostavan.
Tomi Engdahl says:
https://www.epv.fi/project/pyhasalmen-kaivokseen-pumppuvoimalaitos/