Natron Energy Funding, Investors & Competitors

Natron Energy has raised $353M across 7 funding rounds, most recently a $55M undisclosed-stage round in April 2025.

Last Natron Energy funding round

$55M

Undisclosed stage · Apr 2025

Cumulative funding Natron Energy raised

$353M

across 7 funding rounds

Key investors in Natron Energy

  • Khosla Ventures
  • +ND Capital
  • Fluxus Ventures
  • Prelude Ventures
  • Chevron Technology Ventures
  • ABB Ventures
  • Volta Energy Technologies
  • Nabors Industries

Natron Energy Overview

About Natron Energy

Natron Energy is a Santa Clara-headquartered energy storage company producing sodium-ion batteries using Prussian Blue electrodes. Its non-flammable cells suit backup power, EV fast charging, and grid applications, providing long cycle life and rapid discharge capabilities.


Founded

2012

HQ

United StatesSan Jose, CA

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Natron Energy Funding History

Natron Energy has raised a total of $353M across 7 funding rounds.

Natron Energy's first fundraising round was a $1M Series A in January 2013. The most recent completed round was a $55M undisclosed-stage round in April 2025.

Natron Energy funding rounds

Natron Energy funding rounds
DateStageInvestorsRaisedDeal Summary
Apr 2025Undisclosed stage-$55MNatron Energy develops sodium-ion batteries for energy storage applications, including data centers, industrial uses, and grid-scale projects, positioning itself as a U.S.-based alternative to lithium-ion technologies amid supply chain diversification efforts. The company operates a facility in Holland, Michigan, with 600 MW annual capacity, and had announced plans for a $1.4 billion gigafactory in Edgecombe County, North Carolina, targeting 24 GWh production by 2028 to create over 1,000 jobs. On April 22, 2025, Natron closed a $55.4 million Series F-II funding round led by Intel Capital, following a $189 million Series F in January 2024, bringing total funding raised to $363.6 million across multiple rounds from investors like Khosla Ventures, Chevron Technology Ventures, United Airlines Ventures, Aramco Ventures, and others. The oversubscribed round reflected strong institutional confidence despite shifting market conditions, including crashing lithium prices that challenged sodium-ion economics. For FY 2024, Natron reported $65.7 million in revenue. The company had booked orders worth $25 million at shutdown but faced liquidity issues, with investors freezing payments and failed attempts at additional fundraising including follow-on investments and convertible notes. By September 2025, Natron ceased operations, laying off 95 employees and abandoning the gigafactory project amid capital-intensive scaling challenges, intensified Chinese competition from players like CATL, and a VC environment favoring profitability over hardware growth. Private market estimates placed valuation between $750 million and $1.1 billion around that period, with an earlier Series BB-6 post-money at $761.77 million in December 2023.
Jan 2024Undisclosed stage-$189MNatron Energy develops high-power, long-life sodium-ion batteries using Prussian blue chemistry, targeting data centers, telecom, and grid storage applications as safer, more sustainable alternatives to lithium-ion and lead-acid batteries. The company, founded in 2012 and headquartered in Santa Clara, California, operates a 600 MW manufacturing facility in Holland, Michigan, with plans for a 24 GW gigafactory in North Carolina requiring $1.4 billion investment. In January 2024, Natron Energy raised $189 million (some sources cite $189.33 million) in a Series F funding round from undisclosed investors, following prior rounds including a $35 million Series D in 2020 led by ABB Technology Ventures, NanoDimension Capital, and Volta Energy Technologies. This brought total funding to around $363 million across 14 rounds by mid-2025, with key backers including Khosla Ventures, Chevron Technology Ventures, United Airlines Ventures, Aramco Ventures, and Intel Capital in a $55.4 million Series F-II extension in April 2025. The company reported $65.7 million in revenue for 2024, indicating commercial traction from transitioning R&D to deployment with UL 1973 certification and production scaling. Funding supported commercialization, production ramp-up, and market expansion amid demand for fire-safe batteries compliant with NFPA 855 and UL9540a standards. Natron faced challenges post-2024, securing a $55.4 million top-up in April 2025 but encountering liquidity issues by summer 2025, leading to frozen investor payments, failed fundraising attempts, and operational shutdown by late 2025 as reported in WARN notices.
Oct 2021Series ALiberty Energy (lead); Nabors Industries (lead); United Airlines; +ND Capital$58M-
Jul 2020Series D+ND Capital (lead); ABB Ventures (lead); Volta Energy Technologies (lead); Fluxus Ventures; Prelude Ventures; Khosla Ventures; Chevron Technology Ventures$35MNatron Energy was a Santa Clara, California-based company founded in 2012 that developed and supplied Prussian Blue sodium-ion battery solutions for critical power and industrial applications, including data center uninterruptible power supply (UPS) systems and electrically-powered materials handling equipment. The company raised over $363 million across 14 funding rounds from investors including Khosla Ventures, Liberty Oilfield Services, and United Airlines. In April 2025, the company secured a $55.4 million addition to its Series F raise, but by June 2025, recent investors had frozen scheduled payments. Despite exploring multiple funding options—including a follow-on investment from existing stockholders and a Series B equity raise—the company was unable to secure sufficient new capital. Natron Energy ceased operations in September 2025, resulting in 95 permanent layoffs and the non-delivery of $25 million in booked orders. The company had announced ambitious plans to build a $1.4 billion sodium-ion battery manufacturing facility in eastern North Carolina with an annual production capacity of 24 gigawatts, as well as operating a smaller Michigan facility with 600 megawatt annual capacity.
Nov 2017Series C-$8M-
Mar 2016Series BFluxus Ventures (lead)$7M-
Jan 2013Series AKhosla Ventures$1M-

Who has invested in Natron Energy?

10 investors have backed Natron Energy across its funding rounds, including Khosla Ventures, +ND Capital, Fluxus Ventures, Prelude Ventures, Chevron Technology Ventures and ABB Ventures.

Lead investors include Liberty Energy, Nabors Industries, +ND Capital, ABB Ventures, Volta Energy Technologies and 1 other investor.


Natron Energy Investors

Investors in Natron Energy by funding rounds participated
InvestorHQRoundsRoleFirst check
Fluxus VenturesFranceParis2LeadMar 2016
+ND CapitalUnited StatesSan Francisco, CA2LeadJul 2020
Khosla VenturesUnited StatesSan Francisco, CA2ParticipantJan 2013
United AirlinesUnited StatesChicago, IL1ParticipantOct 2021
Liberty EnergyUnited StatesDenver, CO1LeadOct 2021
Prelude VenturesUnited StatesSan Francisco, CA1ParticipantJul 2020
Chevron Technology VenturesUnited StatesHouston, TX1ParticipantJul 2020
Nabors IndustriesUnited StatesHouston, TX1LeadOct 2021

This data is available for Pro users. Sign up to see all 10 Natron Energy investors.

Start Free Trial

Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples

Sign up to see data on 350K+ funding rounds and disclosed revenue and EBITDA valuation multiples, from seed, through growth stage, to pre-IPO.

Start Free Trial

Natron Energy Competitors

Natron Energy competitors include listed companies like Tesla, CATL, LG Energy Solution and Vistra, and private ones like SK on and Base Power.

Public and private companies comparable to Natron Energy
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
TeslaUnited StatesUnited StatesPublicly listed$95B$10B$1.4T13.8x
CATLChinaChinaPublicly listed$63B$16B$214B2.1x
LG Energy SolutionSouth KoreaSouth KoreaPublicly listed$17B$3.4B$62B3.9x
VistraUnited StatesUnited StatesPublicly listed$18B$5B$48B3.3x
SK onSouth KoreaSeoulPrivate--$17B-
Base PowerUnited StatesAustin, TXPrivate--$13B-

Natron Energy Public Comps

Natron Energy is still privately-owned, but its public comps include Tesla, CATL, LG Energy Solution, Vistra, LG Chem, Enlight Renewable Energy, Ecopro, Canmax Technologies, EnerSys and Royal Vopak.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Tesla$95B$10B15.0x13.8x140.8x97.4x
CATL$63B$16B2.8x2.1x11.0x9.2x
LG Energy Solution$17B$3.4B4.8x3.9x24.1x22.2x
Vistra$18B$5B4.0x3.3x13.9x10.2x
LG Chem$33B$3.2B1.3x1.2x13.9x8.7x
Enlight Renewable Energy$582M$461M27.5x-34.7x-
Ecopro$2.5B$60M5.0x-208.8x-
Canmax Technologies$1.1B$162M6.6x3.4x46.0x9.9x

This data is available for Pro users. Sign up to see all Natron Energy competitors and their valuation data.

Start Free Trial

Common questions about Natron Energy

When was Natron Energy founded?Natron Energy was founded in 2012.
Where is Natron Energy headquartered?Natron Energy is headquartered in San Jose, CA, United States.
Is Natron Energy publicly listed?No, Natron Energy is a private, VC-backed company.
How much funding has Natron Energy raised?Natron Energy has raised $353M across 7 funding rounds.
What was Natron Energy's last funding round?Natron Energy's last funding round was a $55M undisclosed-stage round in April 2025.
Who are Natron Energy's investors?Natron Energy's investors include Fluxus Ventures, +ND Capital, Khosla Ventures, United Airlines, Liberty Energy, Prelude Ventures, Chevron Technology Ventures, Nabors Industries, ABB Ventures and Volta Energy Technologies.
Which companies are comparable to Natron Energy?Companies comparable to Natron Energy include Tesla, CATL, LG Energy Solution, Vistra, SK on and Base Power.

See companies similar to Natron Energy

Start Your
Free Trial Today

Try Multiples for free for 3 days. Got questions or need a demo? Schedule a call with us below.

Start Trial