When was VionX Energy founded?

VionX Energy was founded in 2002 and raised its 1st funding round 2 years after it was founded.

Where is VionX Energy located?

VionX Energy is headquartered in Woburn, United States.

How many employees does VionX Energy have?

As of Mar 01, 2026, the latest employee count at VionX Energy is 10 - 49.

Is VionX Energy a funded company?

VionX Energy is a funded company, having raised a total of $152M across 14 funding rounds to date. The company's 1st funding round was a $***** Series A round, raised on Feb 19, 2004.

When was the latest funding round of VionX Energy?

VionX Energy's latest funding was a $***** Series E round on Dec 13, 2019, with participation from 0 investor. Its primary sector is Energy Storage Tech. In United States, the Energy Storage Tech sector has seen $4.8B in funding in 2026 to date.

Where does VionX Energy rank among its competitors?

VionX Energy ranks 21st amongst 57 active competitors, of which 23 are funded. It stands 1st in terms of total funding among its competitors. The most recent competitor to raise funding was XL Batteries, which secured $13M in Jun, 2026.

Who are the top competitors of VionX Energy?

VionX Energy's top competitors include ESS, Quino Energy and VFlow Tech. Among them, XL Batteries secured the most recent funding round in June, 2026.

VionX Energy - 2026 Company Profile, Funding & Competitors

VionX Energy is a deadpooled company based in Woburn (United States), founded in 2002. It operates as a Developer of vanadium flow battery. VionX Energy has raised $152M in funding from investors like VantagePoint Capital Partners, United Technologies and Jabil. The company has 57 active competitors, including 23 funded and 3 that have exited. Its top competitors include companies like ESS, Quino Energy and VFlow Tech.

Company Details

Developer of vanadium flow battery. Its offerings include energy storage solutions based on vanadium redox flow technology, providing long-duration storage with high efficiency and scalability. It features a modular design, extended cycle life, and the ability to decouple power and energy capacity.

Website: vionxenergy.com
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Email ID: *****@vionxenergy.com
Phone Number: +1 **********

Key Metrics

Founded Year

2002

Location

Woburn, United States

Stage

Deadpooled

Total Funding

$152M in 14 rounds

Latest Funding Round

Series E, Dec 13, 2019, $*****

Investors

VantagePoint Capital Partners & 4 more

Ranked

21^st among 57 active competitors

Employee Count

10 - 49 as on Mar 01, 2026

Similar Companies

ESS & 62 more

View VionX Energy's full profile

VionX Energy is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Reports
Vionx Energy Corporation CIN: - , Belgium, Active	Mar 26, 2014	-	-	-

VionX Energy has raised a total funding of $152M over 14 rounds. Its first funding round was on Feb 19, 2004. VionX Energy has 5 institutional investors.

Here is the list of recent funding rounds of VionX Energy:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Dec 13, 2019	9148732	Series E	8488444	6011267	9260300	9527553
Jul 30, 2019	8295114	Series E	8882063	4681293	1579690	2091975
Apr 23, 2019	9720776	Conventional Debt	2854859	1203093	9383850	3043758

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View details of VionX Energy's funding rounds and investors

VionX Energy's employee count trend

VionX Energy has 10 - 49 employees as of Mar 26. Here is VionX Energy's employee count trend over the years:

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Top competitors of VionX Energy include ESS, Quino Energy and VFlow Tech. Here is the list of Top 10 competitors of VionX Energy, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	ESS 2011, Wilsonville (United States), Public	Provider of iron flow battery-based energy storage system	$46.2M	Honeywell, BASF & 21 others	63/100
2nd	Quino Energy 2021, Menlo Park (United States), Series A	Provider of solutions for energy storage systems	$14.7M	Atri Energy Transition, ANRI & 6 others	60/100
3rd	VFlow Tech 2018, Singapore (Singapore), Series A	Manufacturer of vanadium redox flow batteries for energy storage systems	$34M	Granite Asia, PSA International & 34 others	56/100
4th	Standard Energy 2013, Yuseong District (South Korea), Series D	Developer of redox flow batteries	$76.7M	SBVA, Lotte India & 5 others	55/100
5th	XL Batteries 2019, Marlborough (United States), Series B	Organic flow energy storage solution	$40.6M	Catalus Capital, Xerox Ventures & 6 others	55/100
6th	Sinergy Flow 2022, Milano (Italy), Seed	Developer of sustainable and low-cost redox flow batteries based on earth's abundant materials	$10.1M	360 Capital Partners, CDP Venture Capital ... & 6 others	54/100
7th	H2 2010, Daejeon (South Korea), Series B	Provider of energy storage solutions	$77M	STIC Investments, E&Investment & 4 others	53/100
8th	Delectrik 2016, Gurugram (India), Seed	Developer of flow battery systems for renewable energy integration	$2.58M	IIMA Ventures, Aims Investment & 16 others	51/100
9th	RFC Power 2017, Harrogate (United Kingdom), Seed	Provider of solutions for regenerative fuel cell	-	IP Group, Kiko Ventures & 1 others	50/100
10th	Flexbase 2010, Laufenburg (Switzerland), Unfunded	Developer of large-scale redox flow battery energy storage and AI data centers	-	-	43/100
21st	VionX Energy 2002, Woburn (United States), Deadpooled	Developer of vanadium flow battery	$152M	VantagePoint Capital Partners, United Technologies ... & 3 others	34/100