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- Natron Energy
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
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
Website
Status
Privately held
Customer focus
B2B
Revenue model
Product sales
Sectors
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
| Date | Stage | Investors | Raised | Deal Summary |
|---|---|---|---|---|
| Apr 2025 | Undisclosed stage | - | $55M | Natron 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 2024 | Undisclosed stage | - | $189M | Natron 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 2021 | Series A | Liberty Energy (lead); Nabors Industries (lead); United Airlines; +ND Capital | $58M | - |
| Jul 2020 | Series D | +ND Capital (lead); ABB Ventures (lead); Volta Energy Technologies (lead); Fluxus Ventures; Prelude Ventures; Khosla Ventures; Chevron Technology Ventures | $35M | Natron 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 2017 | Series C | - | $8M | - |
| Mar 2016 | Series B | Fluxus Ventures (lead) | $7M | - |
| Jan 2013 | Series A | Khosla 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
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 2 | Lead | Mar 2016 | ||
| 2 | Lead | Jul 2020 | ||
| 2 | Participant | Jan 2013 | ||
| 1 | Participant | Oct 2021 | ||
| 1 | Lead | Oct 2021 | ||
| 1 | Participant | Jul 2020 | ||
| 1 | Participant | Jul 2020 | ||
| 1 | Lead | Oct 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 TrialNatron 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.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | $95B | $10B | $1.4T | 13.8x | ||
| Publicly listed | $63B | $16B | $214B | 2.1x | ||
| Publicly listed | $17B | $3.4B | $62B | 3.9x | ||
| Publicly listed | $18B | $5B | $48B | 3.3x | ||
| Private | - | - | $17B | - | ||
| Private | - | - | $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 FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $95B | $10B | 15.0x | 13.8x | 140.8x | 97.4x | |||
| $63B | $16B | 2.8x | 2.1x | 11.0x | 9.2x | |||
| $17B | $3.4B | 4.8x | 3.9x | 24.1x | 22.2x | |||
| $18B | $5B | 4.0x | 3.3x | 13.9x | 10.2x | |||
| $33B | $3.2B | 1.3x | 1.2x | 13.9x | 8.7x | |||
| $582M | $461M | 27.5x | - | 34.7x | - | |||
| $2.5B | $60M | 5.0x | - | 208.8x | - | |||
| $1.1B | $162M | 6.6x | 3.4x | 46.0x | 9.9x | |||
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. |
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