About Ioxus
Ioxus is an Energy & Utilities company based in Oneonta (United States) founded in 2007, and was acquired by XS Power Batteries in April 2020. Manufacturer of ultracapacitor cell and module. Ioxus has raised $58.48 million across 9 funding rounds from investors including ConocoPhillips, NRG Energy and General Electric. Ioxus has completed 1 acquisition, including Advanced Energy Conversion. Its focus areas include Energy Tech, Energy Storage Tech and Ultracapacitor. Its legal entity is IOXUS, INC. Its competitors include Maxwell Technologies and Inmatech; 1 of its 2 listed competitors has raised funding.
Company details
Ioxus was founded in 2007 and is headquartered in Oneonta, United States. Operations focus on the design and production of ultracapacitor cells, modules, and hybrid capacitors within the energy storage sector. These components are developed for high-power applications in industries requiring efficient energy management and reliability. The company serves various markets through its specialized manufacturing processes.
- Total Equity Funding$58.48M (USD)
in 9 rounds
- Latest Funding Round$2M (USD), Debt – Conventional
Apr 2019
- InvestorsConocoPhillips
& 9 more
- Investments & Acquisitions
- Acquired byXS Power Batteries
(Apr 2020)
Apps and channels of Ioxus
its YouTube channel Ioxus Ultracapacitors has 24 subscribers and 3 videos.
Videos from Ioxus
The most watched videos on Ioxus's YouTube channel, Ioxus Ultracapacitors (24 subscribers). Click a video to play it here.
More on Ioxus Ultracapacitors.
Funding Insights of Ioxus
Ioxus has successfully raised a total of $58.48M across 9 strategic funding rounds. The most recent funding activity was a Debt – Conventional round of $2 million completed in April 2019. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $58.48M
- Total Rounds 9
- Last Round Debt – Conventional — $2M
- First Round $12M
(Mar 2011)
- Investors Count 9
All 9 funding rounds of Ioxus with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Apr 2019 | $2M | Debt – Conventional | – | – | – |
| Dec 2018 | $8.61M | Series C | – | – | – |
| Mar 2018 | $16.18M | Series C | – | – | – |
| Aug 2016 | $1.6M | Debt – Conventional | – | – | – |
| Feb 2016 | $400,000 | Series C | – | – | – |
| Jun 2015 | $295,800 | Series C | – | – | – |
| Apr 2014 | $21M | Series C | – | The Westly Group | |
| Oct 2012 | $250,000 | Grant | – | – | |
| Mar 2011 | $12M | Series B | – | ETV, Northwater Capital Management | – |
10 investors in total: 10 institutional.
Investors in Ioxus
Ioxus has secured backing from 10 investors, including venture fund and institutional investors. Prominent investors backing the company include ConocoPhillips, NRG Energy and General Electric.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
US focused VC firm | westlygroup.com | Menlo Park, United States | ||
| northwatercapital.com | ||||
Investments are made in US expansion-stage energy and tech companies. | braemarenergy.com | New York, United States | ||
Energy technology companies are supported through strategic investments. | 2011 | energytechnologyventures.com | ||
Aster is engaged in venture capital for deep tech and climate solutions. | 2000 | aster.com | Paris, France | |
Diversified operations are conducted across multiple industries worldwide. | 1892 | ge.com | United States | |
Energy generation and storage are managed on a large scale. | 1989 | nrg.com | Princeton, United States | |
Provider of integrated energy services | 1875 | conocophillips.com | Houston, United States | |
Energy research and development are advanced by this state agency. | 1975 | nyserda.ny.gov | United States | |
Manufactures and supplies automotive electrical and electronic components. | 2005 | 4xspower.com | Knoxville, United States |
Investor details for Ioxus
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
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People of Ioxus
7 people are tracked at Ioxus (4 in leadership, 3 in team).
| Name | Role | Group |
|---|---|---|
Scottie Johnson | CEO & Founder | Leadership |
Paul Flowers | Art Director | Leadership |
Craig Schultz | Marketing Director | Leadership |
Frank (Haiwei) Wang | General Manager Greater China, VP of Sales Asia | Leadership |
Rosalie Peters | Quality Manager | Team |
Celia Ferguson | Photographer | Team |
Jim Woodard | Manager, IT | Team |
Complete people profiles for Ioxus
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Investments & Acquisitions by Ioxus
Ioxus has strategically engaged in corporate development activities, having acquired 1 company. Notable acquisitions include Advanced Energy Conversion.
| Company Name | Description | Domain | Location | Founded | Acquired | Amount |
|---|---|---|---|---|---|---|
Manufacturer of embedded controls, power electronics, and electric machines | advanced-energy-conv.com | 0 | Sep 2010 | •••• |
Complete acquisition details for Ioxus
Acquired stakes, deal sources and the complete acquisition history require an active premium plan.
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Timeline of Ioxus
5 dated milestones of Ioxus across 13 years, from founding to its latest funding, stage changes and deals.
- Founded Ioxus is founded.
- Acquisition Acquires Advanced Energy Conversion.
- Funding First funding round of $12.0M.
- Funding Latest funding round, Debt – Conventional, of $2.0M.
- Exit Acquired by XS Power Batteries.
Competitors of Ioxus
Ioxus has 2 listed competitors in our database, 1 of them funded. They include Maxwell Technologies and Inmatech.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| maxwell.com | 1965 | San Diego, United States | 6 | Ultracapacitor-based energy storage and power delivery solutions are provided. | ||
| inmatech-inc.com | 2007 | Ann Arbor, United States | $1.8M | 16 | Super-capacitor devices are developed with low-cost materials and aqueous electrolytes. |
Detailed competitors of Ioxus
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Web traffic of Ioxus
The website of Ioxus (ioxus.com) receives about 6.7K visits a month.
- Monthly visits6.7K
▼ 47.8% vs previous month
Websites whose visitors overlap most with Ioxus. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| maxwell.com | 100% | 16.2K | #1,592,948 | View details | |
| luminus.com | 97% | 46.3K | #786,209 | View details | |
| a123systems.com | 64% | 8.3K | #2,721,234 | View details | |
| utility.com | 64% | 58.3K | #340,579 | View details |
Top companies in Energy Storage Systems
3 companies that operate in the same segment as Ioxus (Energy Storage Systems) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Electric buses and charging systems are manufactured for fleets. | 2004 | Burlingame, California, United States | USD 857.79 M | USD 309.36 M | 418 | |
Silicon-based solar PV modules are manufactured for diverse applications. | 1985 | San Jose, California, United States | USD 171.73 M | USD 300 M | 600 | |
Iron-air energy storage systems are developed for renewable energy projects. | 2009 | Somerville, Massachusetts, United States | USD 2 B | 902 |
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Related news about Ioxus
Complete news archive for Ioxus
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Frequently Asked Questions about Ioxus
Ioxus was founded in 2007 and raised its 1st funding round 4 years after it was founded.
Ioxus is headquartered in Oneonta, United States. It is registered at Oneonta, New York, United States.
Ioxus is a funded company, having raised a total of $58.48M across 9 funding rounds to date. The company's 1st funding round was a Series B of $12M, raised on Mar 2011.
Ioxus was founded in 2007 and is headquartered in Oneonta, United States. Operations focus on the design and production of ultracapacitor cells, modules, and hybrid capacitors within the energy storage sector. These components are developed for high-power applications in industries requiring efficient energy management and reliability. The company serves various markets through its specialized manufacturing processes.
Ioxus's top competitors include Maxwell Technologies and Inmatech.
Ioxus has made 1 acquisition, including Advanced Energy Conversion.
Ioxus has 10 investors. Key investors include ConocoPhillips, NRG Energy, General Electric, New York State Energy Research and Development Authority, and Aster.
Ioxus operates through Ioxus, Inc..
Yes. Ioxus was acquired by XS Power Batteries in April 2020.

