Top 132 Startups, developing energy-efficient batteries

Updated: Mar 01, 2026
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These startups develop new batteries for vehicles, homes and devices.
1
Tesla
Country: USA | Funding: $20.2B
Tesla is Elon Musk's automotive and clean energy company. It develops and manufactures popular electric vehicles, home energy storage systems, solar panels, solar roof tiles and related products and services for residential and industrial customers. Tesla sources its car and home batteries (Powerwall) from three suppliers: CATL, LG Energy Solution and Panasonic, the latter of which has located part of its battery production at the Tesla Gigafactory Nevada. Tesla is also currently expanding its own battery production capacity. Tesla also manufactures Tesla Solar Roof and Tesla Solar Inverter, while regular solar panels it buys from other companies. For larger customers Tesla provides an online platform that enables automated real-time demand forecasting and energy management, as well as a comprehensive Megapack energy storage system. For residential customers, the company operates a virtual energy company in Texas called Tesla Electric which controls the network of Powerwalls.
2
Northvolt
Country: Sweden | Funding: $13.8B
Northvolt manufactures Li-ion battery cells for electric vehicles.
3
Verkor
Country: France | Funding: €3.8B
Verkor manufactures low-carbon batteries, targeting the electric mobility markets.
4
QuantumScape
Country: USA | Funding: $1.5B
QuantumScape is a renewable energy company that develops solid-state battery technology to increase the range of electric cars.
5
Sila
Country: USA | Funding: $1.4B
Sila Nanotechnologies is a provider and manufacturer of revolutionary car batteries.
6
Group14
Country: USA | Funding: $1.2B
Group14 Technologies produces silicon-carbon composite materials for lithium-ion batteries (an alternative to graphite). Its flagship silicon battery material, SCC55, allows batteries to charge in minutes, withstand extreme charge-discharge cycles and last up to 50% longer than traditional lithium-ion batteries. It is used in smartphones, electric vehicle batteries and vertical takeoff and landing aircraft. The company has factories in South Korea, Germany and the United States and manages a global battery supply chain.
7
Freyr AS
Country: USA | Funding: $1.2B
A Nordic solution to accelerating demand for green batteries
8
Romeo Power
Country: USA | Funding: $866.6M
Romeo Power is an energy design and manufacturing powerhouse that created the most energy dense battery packs in the world.
9
EnergyX
Country: USA | Funding: $650M
EnergyX is developing direct lithium extraction technology that enables recovery of lithium metal directly from brine in a form suitable for use as anodes for electric vehicle batteries. EnergyX has developed best-in-class sorbents (for extracting lithium molecules from water, capable of withstanding high temperatures, exhibiting fast kinetics and a long cycle life), SX reagents (for purifying and concentrating brines, capable of delivering Li content up to 60,000 ppm) and lithium-selective membranes (for preferential separation of Li molecules from impurities). The company has also patented electrolyte technology that safely leverages the full benefits of low-cost lithium-metal anode batteries compared to traditional lithium-ion batteries. EnergyX covers all aspects of the battery supply chain: from lithium extraction from brine, purification and manufacturing to the development of solid-state batteries with high safety and energy density.
10
SES
Country: USA | Funding: $600.1M
SolidEnergy (SES) manufactures rechargeable cells at a pilot scale for prototype demonstration and specialized aerospace markets.
11
SES AI
Country: USA | Funding: $600.1M
SES is a manufacturer and developer of Hybrid Li-Metal Batteries for electric vehicles.
12
Swell Energy
Country: USA | Funding: $582M
Swell is a residential energy storage developer and aggregator.
13
Solid Power
Country: USA | Funding: $437.2M
Solid Power is an industry-leading developer of the next-generation of all solid-state rechargeable batteries.
14
EnerVenue
Country: USA | Funding: $420.1M
EnerVenue provides metal-hydrogen batteries for large-scale renewable and storage applications.
15
Our Next Energy
Country: USA | Funding: $390M
Our Next Energy is a developer of innovative energy storage solutions to expand access to sustainable power.
16
Lilac Solutions
Country: USA | Funding: $368.6M
Lilac Solutions offers an ion exchange technology to address the challenges faced by lithium producers.
17
Lyten
Country: USA | Funding: $367M
Lyten is a supermaterial applications company that develops, sources, and manufactures low-carbon footprint products.
18
Natron Energy
Country: USA | Funding: $352.6M
Natron Energy is an early-stage start up company based in the San Francisco Bay Area. stopped operating
19
Skeleton Technologies
Country: Estonia | Funding: €313.3M
Skeleton Technologies is a manufacturer and developer of high energy and power density ultracapacitors.
20
Nexeon
Country: UK | Funding: $330.9M
Nexeon is an electronics company that develops and manufactures lithium-ion batteries to reduce carbon anode energy inefficiency.
21
Morrow Batteries
Country: Norway | Funding: $313.9M
Morrow Batteries is to develop and manufacture the world’s most cost-effective and sustainable battery cells.
22
Amprius
Country: USA | Funding: $305M
Amprius develops an anode out of silicon nanowires for lithium-ion batteries.
23
American Battery Technology Company
Country: USA | Funding: $300.2M
American Battery Technology Company is uniquely positioned to supply low-cost, low-environmental impact, and domestically sourced battery metals through its three divisions: lithium-ion battery recycling, primary battery metal extraction technologies, and primary resources development.
24
Factorial Energy
Country: USA | Funding: $240M
Factorial Energy is developing solid-state battery technology for use in electric vehicles.
25
Mitra Chem
Country: USA | Funding: $227.7M
Mitra Chem is a lithium-ion battery material manufacturing company that innovates and commercializes iron-based cathode materials.
26
StoreDot
Country: Israel | Funding: $206.5M
StoreDot develops quick-charging battery to replace the lithium-ion components used on phones, electric cars, military drones and other un-wired devices.
27
InoBat Auto
Country: Slovakia | Funding: €189.3M
InoBat Auto empowers electric mobility by creating better batteries for a greener world.
28
Electrovaya
Country: Canada | Funding: $190.1M
Electrovaya manufactures lithium ion batteries and systems for electric vehicles, portable power for industrial electronics and energy storage for smart grids. Its unique manufacturing process is toxin- and emission-free.
29
Aquion Energy
Country: USA | Funding: $182.3M
Aquion Energy is a company that manufactures sodium ion batteries and energy storage systems.
30
Vianode
Country: Norway | Funding: $171.5M
Vianode is a producer of sustainably engineered battery materials.
31
Sonnen
Country: Germany | Funding: $169.2M
Sonnen is a German-based pioneer for intelligent lithium based energy storage. The sonnenBatterie is not just a battery, it's an intelligent storage system that automatically adjusts the energy usage in your household. In combination with solar panels the sonnenBatterie will enable you to supply yourself with clean energy – thus making you independent and protecting you from energy price hikes.
32
Wildcat Discovery Technologies
Country: USA | Funding: $164.9M
Wildcat Discovery Technologies is a developer of materials for the use in batteries.
33
Vulcan Energy
Country: Australia | Funding: A$238M
Vulcan Energy is a junior mineral exploration company that is exploring and developing battery metals projects in Europe.
34
NanoGraf
Country: USA | Funding: $149.5M
NanoGraf is building batteries that operate at extreme temperatures and after they've been crushed or punctured. These batteries are used in Defense applications.
35
Element Energy
Country: USA | Funding: $146.9M
Element Energy is a startup with technology that significantly improves the performance, reliability and cost of large battery packs.
36
Sion Power
Country: USA | Funding: $145M
Sion Power develops and commercializes advanced energy storage technologies, particularly lithium-sulfur (Li-S) batteries.
37
Sakuu
Country: USA | Funding: $140.3M
Sakuu uses 3D Printing to manufacture solid-state lithium-ion batteries intended to store electricity efficiently.
38
instagrid
Country: Germany | Funding: €124.9M
instagrid is a provider of portable battery storage to easily create mobile power infrastructures.
39
Nanoramic Laboratories
Country: USA | Funding: $130.1M
Nanoramic Laboratories is an industry-leading energy storage technology company & materials solutions innovator for Neocarbonix™ electrodes
40
Nyobolt
Country: UK | Funding: $113.6M
Nyobolt is a developer of high-powered battery technology used to serve automotive applications.
41
Alsym Energy
Country: USA | Funding: $113.6M
Startup Alsym Energy looks to bring batteries free of lithium, cobalt to the masses
42
EcoFlow
Country: USA | Funding: $114.4M
EcoFlow develops outdoor and smart home portable energy storage solutions.
43
Nanotech Energy
Country: USA | Funding: $94.9M
Nanotech Energy claims to be “the world’s top supplier of graphene” and plans to release a non-flammable, environmentally friendly lithium battery that can charge 18 times faster than anything that is currently available on the market
44
Ion Storage Systems
Country: USA | Funding: $85.2M
Ion Storage Systems is focused on developing the most energy dense, safest batteries that can be deployed in any environment. Breakthroughs in solid state battery technology have led to a battery that meets the mission critical needs for the defense and aerospace industries; and safer more efficient for consumer electronics and electric vehicles.
45
Princeton NuEnergy
Country: USA | Funding: $82.1M
Princeton NuEnergy uses a process developed by researchers who combined expertise from diverse fields to solve a longstanding problem: how to turn spent cathode materials, or the expensive part of a lithium-ion battery, which contain elements such as cobalt, nickel, manganese and lithium, into pristine new cathodes.
46
E3 Metals
Country: Canada | Funding: $81.9M
E3 Metals is a lithium company with the goal of producing battery-quality lithium products to power the growing electrical revolution.
47
TWAICE
Country: Germany | Funding: $74.4M
Twaice is the new analytics platform for Battery Data. The company build virtual battery models and constantly collect data with smart control units. This platform provides all battery data in one place, offer on-demand reports, and predictive diagnostics. This indeed simplifies battery testing, improve lifetime and prevent downtimes.
48
Addionics
Country: UK | Funding: $73M
Addionics is creating next-generation batteries for electric cars through intelligent 3D battery architecture and engineering.
49
VoltStorage
Country: Germany | Funding: €68.8M
VoltStorage is an electric storage device that can store clean solar power during the day to power your home at night. It will save you a lot of money, protect the environment and help to stabilize the grid.
50
Standard Energy
Country: South Korea | Funding: $68.7M
Standard Energy is a vanadium ion battery developer. Vanadium ion batteries have high energy, performance and safety, but they are not as compact as lithium ion batteries.
Alexander Gillet
Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com