About Siilion
Siilion is an Energy & Utilities company based in Broomfield (United States) founded in 2014, and was acquired by Tesla in November 2021. Drop-in replacement technology for lithium-ion batteries is developed. The company was acqui-hired. Its focus areas include Energy Tech, Energy Storage Tech, Battery and Components. Its competitors include Adden Energy, Ionic Materials and Ampcera; 3 of its 3 listed competitors have raised funding.
Company details
Siilion was founded in 2014 and is based in Broomfield, United States. Technology for drop-in replacements in lithium-ion batteries is developed within the energy storage sector. A non-flammable liquid electrolyte, micron-silicon anode, and cobalt-free cathode are incorporated into the system. Compatibility with existing battery and cell manufacturing processes is enabled, supporting integration in commercial applications.
- Headquarters Broomfield, United States
- Stage Acquired
- SectorsEnergy & Utilities
- Email••••••••
- Website siilion.com
- Social LinkedIn X
- Acquired by Tesla (Nov 2021)
Funding Insights of Siilion
- Total Rounds 4
- Last Round Grant — $695,000
- First Round $1.08M
(Jun 2015)
- Investors Count 1
All 4 funding rounds of Siilion 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 |
|---|---|---|---|---|---|
| Oct 2017 | $695,000 | Grant | – | – | |
| Sep 2017 | $173,827 | Grant | – | – | |
| Jul 2016 | $225,000 | Grant | – | – | |
| Jun 2015 | $1.08M | Grant | – | – |
2 investors in total: 2 institutional.
Investors in Siilion
Siilion has secured backing from 2 investors, including institutional investors. Prominent investors backing the company include Tesla and National Science Foundation.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
A government-backed foundation providing seed-stage investments to support small businesses. | 1950 | nsf.gov | Arlington, United States | |
Electric vehicles and solar energy products are manufactured. | 2003 | tesla.com | Austin, United States |
Investor details for Siilion
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
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Timeline of Siilion
4 dated milestones of Siilion across 7 years, from founding to its latest funding, stage changes and deals.
- Founded Siilion is founded.
- Funding First funding round of $1.1M.
- Funding Latest funding round, Grant, of $695K.
- Exit Acquired by Tesla.
Competitors of Siilion
Siilion has 3 listed competitors in our database, 3 of them funded. They include Adden Energy, Ionic Materials and Ampcera.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| addenenergy.com | 2021 | Waltham, United States | $20.15M | Solid-state battery solutions and electrolytes are provided through advanced algorithms. | ||
| ionicmaterials.com | 2012 | Woburn, United States | $65M | 40 | Solid polymer electrolytes for solid-state batteries are developed. | |
| ampcera.com | 2017 | Milpitas, United States | $15M | Solid-state electrolyte materials for lithium batteries are developed. |
Detailed competitors of Siilion
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Top companies in Energy Storage Systems
3 companies that operate in the same segment as Siilion (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 Siilion
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Frequently Asked Questions about Siilion
Siilion was founded in 2014 and raised its 1st funding round 1 year after it was founded.
Siilion is headquartered in Broomfield, United States. It is registered at Broomfield, Colorado, United States.
Siilion was founded in 2014 and is based in Broomfield, United States. Technology for drop-in replacements in lithium-ion batteries is developed within the energy storage sector. A non-flammable liquid electrolyte, micron-silicon anode, and cobalt-free cathode are incorporated into the system. Compatibility with existing battery and cell manufacturing processes is enabled, supporting integration in commercial applications.
Siilion's top competitors include Adden Energy, Ampcera and Ionic Materials.
Siilion has 2 investors. Key investors include Tesla, and National Science Foundation.
Yes. Siilion was acquired by Tesla in November 2021.