10 Top Grid Scale Battery Storage Companies

Browse technical resources about lithium batteries, energy storage, and smart power systems.

  • Top 10 battery storage cabinet manufacturers

    Top 10 battery storage cabinet manufacturers

    As the demand for clean and reliable energy continues to surge, the role of Battery Energy Storage System manufacturers becomes increasingly crucial. Here, we present the top 10 manufacturers in 2023, each distinguished by a unique blend of innovation, experience and commitment to powering a sustainable future.


  • Top 10 battery companies ranking list

    Top 10 battery companies ranking list

    In this article, we'll take a look at the top 10 largest battery manufacturers in the world by market share. Read on to find out which companies top the charts in 2022.


    FAQs about Top 10 battery companies ranking list

    What are the top 10 battery companies in the world?

    1. Global Top 10 Battery Companies 1.1. BYD Co., Ltd. 1.2. Clarios 1.3. Contemporary Amperex Technology Co., Ltd. (CATL) 1.4. Exide Industries Ltd. 1.5. GS Yuasa Corporation 1.6. LG Chem Ltd. 1.7. Panasonic Corporation 1.8. Samsung SDI Co., Ltd. 1.9. Tesla, Inc. 1.10. Tianjin Lishen Battery Joint-Stock Co., Ltd. 2. Wrapping Up 3.

    Who makes the most EV batteries in the world?

    China is the undisputed leader in battery manufacturing, dominating the global production of essential battery materials such as lithium, cobalt, and nickel. Chinese companies supply 80% of the world's battery cells and control nearly 60% of the EV battery market. 13. Amperex Technology Limited (ATL) 12. Envision AESC 11. Gotion High-tech 10.

    Which is the largest battery company in the world?

    The largest battery companies in the world are CATL, LG Energy Solution, and Panasonic. CATL, the biggest among them, generates over $30 billion in revenue annually and employs more than 60,000 people globally. CORNEX NEW ENERGY CO. LTD China OLYMPIC INDUSTRIES LTD. Bangladesh PT. DONG JOE INDONESIA Indonesia

    Who dominates the EV battery market?

    The latest research indicates the dominance of Asian companies in the EV battery market—Chinese companies making up more than 50%, followed by Korean and Japanese companies. Do you want to learn more about the world's top companies leading in battery innovation and manufacturing? Read on. 1. Global Top 10 Battery Companies 1.1. BYD Co., Ltd.

    Which EV battery manufacturer has the largest market share?

    According to SME Research, CATL is the world's largest EV battery manufacturer, with 37.7% of the market share. Plus, it is the only battery supplier with a market share of over 30%. CATL has 6 R&D facilities, five in China and one in Germany. In 2023, they spent about $2.59 billion in R&D, an 18.35% increase from the previous year.

    How many battery companies are there in the world?

    The total number of battery companies in the world is 42,259. China has the largest number of battery companies, with 19,197 making up 45% of the worldwide battery industry. The India comes second with 9,745 battery companies (21%), followed by United States of America with 1,592 battery companies.

  • Top 10 Battery Technology Companies

    Top 10 Battery Technology Companies

    Our primary focus lies in cutting-edge power battery technology for new energy vehicles, energy storage applications, power transmission, and distribution equipment.


    FAQs about Top 10 Battery Technology Companies

    Who makes the most EV battery?

    The top three battery makers (CATL, BYD, LG) collectively account for two-thirds (66%) of total battery deployment. Once a leader in the EV battery business, Panasonic now holds the fourth position with an 8% market share, down from 9% last year.

    Who makes EV batteries?

    Despite efforts from the United States and Europe to increase the domestic production of batteries, the market is still dominated by Asian suppliers. The top 10 producers are all Asian companies. Currently, Chinese companies make up 56% of the EV battery market, followed by Korean companies (26%) and Japanese manufacturers (10%).

    Is Panasonic losing its competitive edge in the EV battery industry?

    Once a leader in the EV battery business, Panasonic now holds the fourth position with an 8% market share, down from 9% last year. With its main client, Tesla, now effectively sourcing batteries from multiple suppliers, the Japanese battery maker seems to be losing its competitive edge in the industry.

  • Unreliable grid telecom site lithium battery storage diesel savings Nigeria

    Unreliable grid telecom site lithium battery storage diesel savings Nigeria

    This study evaluates the performance of hybrid energy systems deployed at rural Nigerian telecom sites, focusing on reductions in DG runtime, diesel consumption, cost savings, and improvements in site reliability. This reliance leads to high operational expenditures (OPEX), frequent maintenance, and environmental pollution. As the business expanded, stable electricity became a critical need for maintaining productivity, protecting sensitive equipment, and. WiSolar batteries can be used at telecom towers in Nigeria. By integrating WiSolar batteries with solar. But with diesel prices rising, operational costs ballooning, and sustainability becoming more than just a buzzword, there's a shift happening in the industry — one powered by battery storage solutions. However, with the grid being so unreliable in the region, the cost of using the generators was spiralling and the need to find a cheaper and more stable alternative to protect the efficiency of their operations was.

    [PDF Version]
  • Which energy storage battery production companies are there

    Which energy storage battery production companies are there

    The Top Five Energy Storage Battery Manufacturers and EverExceed's Role in Shaping the Future of Energy Storage1. Tesla Tesla, a name synonymous with innovation in clean energy, is a leader in the energy storage battery industry.


    FAQs about Which energy storage battery production companies are there

    How many battery energy storage systems are there?

    Australian and German homeowners had built around 31,000 and 100,000 battery energy storage systems, respectively, by 2020. Large-scale BESSs are now operational in nations such as the United States, Australia, the United Kingdom, Japan, China, and many others. (Source) (Source)

    What is a battery energy storage system?

    (Source) Battery Energy Storage System (BESS) uses specifically built batteries to store electric charge that can be used later. A massive amount of research has resulted in battery advancements, transforming the notion of a BESS into a commercial reality.

    Does Tesla have a battery storage business?

    Tesla has been growing its energy storage business in recent years. Established as a key player in the electric automotive industry, it has diversified its offerings to include battery storage — now one of its strongest offerings. Tesla Energy's energy storage business has never been better.

    How many energy storage lithium battery projects are planned?

    Over 78 energy storage lithium battery-related projects have been planned nationwide, representing a significant investment of CNY 569.861 billion and a planned construction capacity of approximately 1.4 TWh. Renewable energy installations coupled with energy storage systems.

    What are the key innovations in energy storage?

    Key Innovation: Advanced lithium-ion batteries for consumer and grid applications. Panasonic's battery storage solutions provide reliable backup power and enhance renewable energy use, particularly in collaboration with electric vehicle manufacturers. 5. Nostromo Energy Key Innovation: IceBrick thermal energy storage for commercial buildings.

    Why does China need a battery storage company?

    It's a situation that has raised concerns among battery storage companies elsewhere in the world – the high demand for batteries in China means the country needs plentiful supplies of lithium, of which China is the third largest producer in the world.

  • What are the large-scale energy storage grid companies

    What are the large-scale energy storage grid companies

    In this week's Top 10, Energy Digital takes a deep dive into energy storage and profile the world's leading companies in this space who are leading the charge towards a more sustainable energy future.


    FAQs about What are the large-scale energy storage grid companies

    What is grid energy storage?

    Gain data-driven insights on Grid Energy Storage, an industry consisting of 3K+ organizations worldwide. We have selected 10 standout innovators from 600+ new Grid Energy Storage companies, advancing the industry with immersion-cooled battery storage, flywheel storage, electric marine propulsion systems, and more.

    How big is the grid energy storage industry?

    Grid Energy Storage Industry Stats: The sector comprises 3K+ organizations worldwide. Out of these, 600+ new grid storage companies were founded in the last five years, witnessing 2020 as the average founding year. On average, each of these companies employs about 15 people.

    What does a grid storage company do?

    These firms focus on grid storage solutions like grid-connected batteries, compressed air energy storage, molten salt storage, and more. They utilize artificial intelligence, advanced algorithms, sensors, and simulation techniques to enhance energy storage efficiency, reliability, and integration with existing grids.

    What does gridstor do?

    What they do: GridStor integrates large-scale battery energy storage into the electric grid. The company's energy storage systems provide grid flexibility and increase reliance on renewable sources like solar, wind, and hydropower.

    What are the top 10 energy storage manufacturers in the world?

    This article will mainly explore the top 10 energy storage manufacturers in the world including BYD, Tesla, Fluence, LG energy solution, CATL, SAFT, Invinity Energy Systems, Wartsila, NHOA energy, CSIQ. In recent years, the global energy storage market has shown rapid growth.

    Which companies offer energy storage solutions?

    Alongside vehicles like the Model S, Model X, and Model 3, Tesla's energy storage solutions include the Powerwall and Powerpack batteries. The German company offers affordable renewable energy generation and battery storage solutions. Sonnen 's mission is to provide its consumers with clean energy and independence from the power grid. #5.

  • Top 10 lithium battery rankings

    Top 10 lithium battery rankings

    In this article, we will take a closer look at the top 10 lithium-ion battery manufacturers in the world, exploring their unique technologies, production processes, and market shares.


    FAQs about Top 10 lithium battery rankings

    What are the top 10 power lithium battery manufacturers in the world?

    Data show that the world's top 10 Power Lithium battery manufacturers, China's CATL, BYD Company, Panasonic, Guoxuan, Wanxiang a total of five large lithium battery companies. CATL' sales in last year were 32.5 GWH and its market share rose to 27.87%, firmly ranking first in the world.

    Who sells power lithium batteries in the world?

    China's top five companies account for 45.1% of global sales of power lithium batteries, nearly half of global sales. China's power lithium battery companies, have become global market leaders. The world's top three companies are China, Japan and South Korea.

    Where are the largest lithium-ion battery companies located?

    Need help with using Statista for your research? Tutorials and first steps The largest lithium-ion battery companies worldwide were located in the Asian continent. China, South Korea, and Japan led the ranking in 2023.

    Which countries produce the most lithium ion batteries in 2022?

    In 2022, the global production capacity of lithium-ion batteries was over 2,000 GWh. This number is expected to grow by 33% every year, reaching more than 6,300 GWh by 2026. Meanwhile, Asia was the leader in battery production in 2022, making 84% of the world's supply. This is likely to continue in the next few years.

    Which countries manufacture lithium batteries?

    The global lithium battery production as a whole, the global power lithium battery field has formed China, Japan and South Korea, the top 10 companies in the world are all China, Japan and South Korea, and occupy nearly 90% of the market share, Europe and the United States lack the relevant heavyweights.

    Who is the largest battery manufacturer in the world?

    The Chinese company BYD ranked second with a market share of 15.8 percent, followed by South Korean LG Energy Solution with a market share of 13.6 percent. CATL (Contemporary Amperex Technology Co. Limited) was the largest battery manufacturer, having overtaken its main Chinese, South Korean, and Japanese competitors.

  • Top 10 domestic energy storage power station manufacturers

    Top 10 domestic energy storage power station manufacturers

    The article will mainly explore the top 10 energy storage manufacturers in USA including Tesla, Enphase Energy, Fluence Energy, GE Vernova, Powin Energy, NextEra Energy, Wärtsilä, Primus Power, ESS.


    FAQs about Top 10 domestic energy storage power station manufacturers

    What is energy storage systems (ESS)?

    ESS enables efficient capture, bolstering grid stability and maximizing renewable energy integration. We dig deep into the essence of Energy Storage Systems, elucidates critical factors when selecting manufacturers, and spotlights top energy storage system manufacturers.

    Why is Panasonic a leading energy storage company?

    Thanks to a wide and varied portfolio of solutions, Panasonic has positioned itself as one of the leaders in the energy storage vicinity. Panasonic is one of the industry's top names due to its advances in innovative battery technology alongside strategic partnerships and extensive experience in manufacturing high-quality products.

    What are the key innovations in energy storage?

    Key Innovation: Advanced lithium-ion batteries for consumer and grid applications. Panasonic's battery storage solutions provide reliable backup power and enhance renewable energy use, particularly in collaboration with electric vehicle manufacturers. 5. Nostromo Energy Key Innovation: IceBrick thermal energy storage for commercial buildings.

    Is Tesla Energy a good energy storage company?

    Tesla Energy's energy storage business has never been better. Despite only launching its energy storage arm in 2015, as of 2023 the company had an output of 14.7GWh in battery energy storage systems. Its portfolio includes storage products like the Powerwall and the Megapack.

    Why is energy storage so important?

    The race to develop efficient and scalable energy storage systems has never been more crucial. These technologies underpin the transition to a low-carbon future by ensuring grid reliability, maximizing renewable energy use, and enhancing energy security.

    Is LG Chem a good energy storage company?

    LG Chem has established itself as a notable player in the energy storage sector, particularly excelling in residential and commercial & industrial (C&I) energy storage systems. Their Residential ESS, the Home Battery, is renowned for its exceptional safety, extended lifespan, and impressive efficiency.

  • 1MWh Photovoltaic Energy Storage Battery Cabinet for Power Grid Distribution Stations

    1MWh Photovoltaic Energy Storage Battery Cabinet for Power Grid Distribution Stations

    A 1MWh BESS is an energy storage system with around 1,000 kilowatt-hours (kWh) of usable energy, typically deployed at C&I sites as a site-level asset for peak shaving, PV self-consumption, tariff arbitrage, backup power, and microgrid-ready operation. At this scale, design is driven not only by energy (MWh), but by architecture choices, including AC bus voltage, grid-tied/off-grid transfer strategy, and the required level of power quality and. An air-cooled commercial and industrial battery system designed with a split PCS and battery cabinet architecture for flexible 1+N scalability. Designed as a fully integrated, utility-grade cabinet, it prioritises efficiency, reliability and rapid deployment, addressing the core financial and operational concerns. ESS-GRID FlexiO is an air-cooled battery solution designed for industrial and commercial applications. The cabinet is integrated with battery management system (BMS),energy management system (EMS),modular power conversion system (PCS),and fire protection system. The system's capacity is up to.

    [PDF Version]
  • Top 10 lithium energy storage equipment manufacturers

    Top 10 lithium energy storage equipment manufacturers

    This article summarizes top 10 manufacturers of global energy storage batteries. They are CATL, BYD, EVE, REPT,HTHIUM, Great Power, Envision Energy, CALB, GOTION HIGH-TECH, Ganfeng Lithium.


    FAQs about Top 10 lithium energy storage equipment manufacturers

    What are the top 10 energy storage manufacturers in the world?

    This article will mainly explore the top 10 energy storage manufacturers in the world including BYD, Tesla, Fluence, LG energy solution, CATL, SAFT, Invinity Energy Systems, Wartsila, NHOA energy, CSIQ. In recent years, the global energy storage market has shown rapid growth.

    Who makes the best battery energy storage system?

    As the top battery energy storage system manufacturer, The company is renowned for its comprehensive energy solutions, supported by advanced industrial facilities in Shenzhen, Heyuan, and Hefei. Grevault, a subsidiary of Huntkey, is a leader in the battery energy storage sector.

    How many energy storage lithium battery projects are planned?

    Over 78 energy storage lithium battery-related projects have been planned nationwide, representing a significant investment of CNY 569.861 billion and a planned construction capacity of approximately 1.4 TWh. Renewable energy installations coupled with energy storage systems.

    Why is the demand for lithium batteries increasing?

    Because of this, the demand for lithium batteries is increasing very quickly. As a result, companies that make lithium batteries are expanding their operations all over the world. In 2022, the global production of lithium-ion batteries was over 2,000 GWh. This number is expected to grow by 33% each year, reaching more than 6,300 GWh by 2026.

    Why is Panasonic a leading energy storage company?

    Thanks to a wide and varied portfolio of solutions, Panasonic has positioned itself as one of the leaders in the energy storage vicinity. Panasonic is one of the industry's top names due to its advances in innovative battery technology alongside strategic partnerships and extensive experience in manufacturing high-quality products.

    Is Tesla Energy a good energy storage company?

    Tesla Energy's energy storage business has never been better. Despite only launching its energy storage arm in 2015, as of 2023 the company had an output of 14.7GWh in battery energy storage systems. Its portfolio includes storage products like the Powerwall and the Megapack.

  • Top 10 Lead-acid Battery Super Factories

    Top 10 Lead-acid Battery Super Factories

    As per the analysis by IMARC Group, the top companies in the lead acid battery industry are adopting innovative battery manufacturing machines to optimize their production processes at minimal costs.


    FAQs about Top 10 Lead-acid Battery Super Factories

    What are the top ranked lead acid battery companies?

    Also, please take a look at the list of 11 lead acid battery manufacturers and their company rankings. Here are the top-ranked lead acid battery companies as of January, 2025: 1.Concorde Battery Corporation, 2.Power Sonic, 3.DYNAMIS Batterien GmbH.

    What are the Best Lead-acid batteries?

    Industries across the globe heavily rely on lead-acid batteries to power their operations and keep things running smoothly. Among these batteries' most reputable and reliable providers are Leoch, Yuasa, Power-Sonic, Varta, JYC battery, Ritar, Exide, Long, Duracell, and Banner – the top ten brands discussed in this article.

    Why are lead-acid batteries so popular?

    Lead-acid batteries have longevity and efficiency for powering various devices like automobiles or backup systems, so it's no wonder why these batteries have been common across industries. With this in mind, let's find out which brands rank amongst our Top 10 may be interesting!

    Who makes lead-acid batteries?

    3. East Penn Manufacturing Co. East Penn Manufacturing Co. is a private, family-owned company that operates the world's largest single-site, lead-acid manufacturing battery facility. It designs and produces hundreds of energy storage devices that serve numerous industries.

    Are lead-acid batteries safe?

    Lead-acid batteries are among the world's safest and most reliable energy storage devices. A lead-acid (Pb) [the symbol Pb from the Latin Plumbum] battery is a rechargeable battery that consists of negative lead and positive lead dioxide electrodes placed into the sulfuric acid electrolyte.

    What is the global lead acid battery market value?

    The global lead acid battery market reached a value of US$ 34.3 Billion in 2023. Lead acid batteries are rechargeable energy storage devices comprising an anode and cathode as positive and negative terminals. They are connected by the electrolyte to generate electricity through electrochemical reactions.

  • China 5kWh battery storage in China supplier

    China 5kWh battery storage in China supplier

    Choose the Lithium Ion Battery 5kWh for a dependable and efficient power storage option, brought to you by one of China's leading manufacturers and suppliers of lithium ion batteries. To select the right lithium battery, consider your device's specific voltage and capacity requirements. Review performance trends and consult with a trusted distributor to find budget-friendly options. For a. Introducing the latest innovation from V-land International Ltd. In addition to our OEM/ODM services, we also offer comprehensive support throughout the entire development and production process. The 5kw Lithium Battery Storage is an essential part of our Lithium Battery offerings. Their efficiency makes them a preferred choice for many manufacturers. Shenzhen Ryder Electronics Co.


  • Power plant energy storage battery ratio standard

    Power plant energy storage battery ratio standard

    A battery energy storage system (BESS), battery storage power station, battery energy grid storage (BEGS) or battery grid storage is a type of technology that uses a group of in the grid to store. Battery storage is the fastest responding on, and it is used to stabilise those grids, as battery storage can transition fr.


    FAQs about Power plant energy storage battery ratio standard

    Do battery energy storage systems improve power plant profitability?

    However, as batteries and power conversion systems remain costly, the power plant profitability depends on the capacity determination of the battery energy storage system (BESS). This study explored an approach for optimal capacity determination of a BESS combined with renewable energy considering the complex degradation of lithium-ion batteries.

    What are the technical measures of a battery energy storage system?

    The main technical measures of a Battery Energy Storage System (BESS) include energy capacity, power rating, round-trip efficiency, and many more. Read more...

    What is a battery energy storage system?

    A battery energy storage system (BESS) is an electrochemical device that charges (or collects energy) from the grid or a power plant and then discharges that energy at a later time to provide electricity or other grid services when needed.

    How does energy-to-power ratio affect battery storage?

    The energy-to-power ratio (EPR) of battery storage affects its utilization and effectiveness. Higher EPRs bring larger economic, environmental and reliability benefits to power system. Higher EPRs are favored as renewable energy penetration increases. Lifetimes of storage increase from 10 to 20 years as EPR increases from 1 to 10.

    Is battery storage a peaking capacity resource?

    Assessing the potential of battery storage as a peaking capacity resource in the United States Appl. Energy, 275 ( 2020), Article 115385, 10.1016/j.apenergy.2020.115385 Renew. Energy, 50 ( 2013), pp. 826 - 832, 10.1016/j.renene.2012.07.044 Long-run power storage requirements for high shares of renewables: review and a new model Renew. Sust. Energ.

    What is a battery storage power plant?

    Battery storage power plants and uninterruptible power supplies (UPS) are comparable in technology and function. However, battery storage power plants are larger. For safety and security, the actual batteries are housed in their own structures, like warehouses or containers.

  • Price of energy storage battery for secondary use

    Price of energy storage battery for secondary use

    Battery Second-Use Repurposing Cost Calculator. For plug-in electric vehicles (PEVs), use NREL's battery second-use (B2U) calculator to explore the effects of different repurposing strategies and assumptions on economics.


    FAQs about Price of energy storage battery for secondary use

    How much does secondary use of retired batteries cost?

    (1) The cost of secondary use of retired batteries is about 300yuan/kWh, which is very attractive, and this is only our calculation using about 261.3 kWh of batteries, and these costs will continue to decrease if the batteries are scaled up;

    Are second-life batteries a viable option for energy storage?

    The second-life batteries have variable battery SOH and variable PV generation penetrations. There are supporting results about economic revenue from battery operation hence encouraging the consumers to adopt second-life batteries as a viable option for energy storage.

    Should lithium-ion batteries be used in secondary storage applications?

    In future, lithium-ion batteries should be considered in place of previously used lead-acid batteries. Another factor considered in the deployment of used batteries in secondary storage applications is charging infrastructure and renewable integrated micro-grids.

    Does energy storage system have 2nd Life of battery?

    Economic analysis in case of energy storage system as 2nd life of battery Energy storage system with 1 MW PV plant is proposed as 2nd life of battery. Economic analysis for energy storage system considering lifetime is carried out. Cash flow diagram is drawn to identify the feasibility of 2nd life of battery.

    Does secondary use of EvB prolong the life span of EV batteries?

    Moreover, White et al. (2021) claim that the secondary use of EVBs in grid companies can prolong the total life span of the batteries, which improves the efficient consumption usage of EVBs and lowers the cost of EVs and total energy storage for gradient users.

    How long does it take to recover secondary use batteries?

    We calculate that the cost of secondary use batteries can be recovered in about 2.5 years because of its very low cost, about 300yuan/kWh, but its performance is not worse than new batteries, compared with the three times cost difference.

  • Domestic frequency modulation energy storage battery ranking list

    Domestic frequency modulation energy storage battery ranking list

    3390/pr11102843 Corpus ID: 263176030; Capacity Configuration of Hybrid Energy Storage Power Stations Participating in Power Grid Frequency Modulation @article{Zhang2023CapacityCO, title={Capacity Configuration of Hybrid Energy Storage Power Stations Participating in Power Grid Frequency Modulation},.


    FAQs about Domestic frequency modulation energy storage battery ranking list

    Who are the top ten battery storage system integrators?

    In the domestic user-side market, the top ten battery storage system integrators are: 1. Singularity Energy – Leading the user-side energy storage segment. 2. BYD – A major player with a significant share in the user-side market. 3. CaiRi Energy – Known for its effective energy storage solutions. 4.

    Which battery system integrators are the most popular in China?

    Huawei and BYD entered the top five battery system integrators globally last year, as the Chinese domestic market undergoes a "price war".

    Which Chinese companies use lithium batteries in base stations & data centers?

    In the global market for lithium batteries used in base stations and data centers, the top five Chinese companies are: 1. Shuangdeng – Leading the market with high-performance lithium batteries. 2. Nandu Power Supply – Known for its reliable lithium battery solutions. 3.

    What are the different types of battery market rankings?

    These rankings cover various categories, including domestic and global market standings, user-side rankings, direct current (DC) integrators, and lithium batteries used in base stations and data centers. II. Global Market Rankings III. User-Side Market Rankings IV. DC Side Storage Rankings VI. Market Growth

    Who are the top 5 Chinese companies in direct current energy storage?

    Globally, the top five Chinese companies in the direct current (DC) side of energy storage are: 1. BYD – Leading the global market in DC energy storage. 2. Yuanxin Storage – Known for its expertise in DC energy solutions. 3. Jingkong Energy – Noted for its advanced DC storage systems. 4.

    Which lithium home AC battery systems are available in 2023?

    The following battery comparison chart lists the latest lithium home AC battery systems in 2023 available in Australia, North America, the UK, Europe and Asia from the world's leading battery manufacturers, including Tesla, Sonnen, Sunpower, Franklin, Enphase and many more. See our other battery & inverter comparison charts:

Battery & Energy Storage Insights

Ready to Power Your Project?

Contact our team for a free feasibility study, custom battery sizing, and a competitive quote.