Sion Power Corporation
Building the Future of Batteries
89 employees · est. 1995 · Tucson, United States
Solid Power, Inc.
A New Breed of Battery. All-Solid-State Batteries by Solid Power.
228 employees · est. 2011 · Louisville, United States
Sion Power Corporation is the older company (1995 vs 2011); Solid Power, Inc. is the larger of the two.
Side-by-Side Comparison
| Metric | Sion Power Corporation | Solid Power, Inc. |
|---|---|---|
| Founded | ||
| Founded | 1995 older | 2011 |
| Headquarters | ||
| Headquarters | Tucson, United States | Louisville, United States |
| Employees | ||
| Employees | 89 | 228 larger |
| Industry | ||
| Industry | Energy, Mobile, Energy Storage | Energy, Renewable Energy, Energy Storage |
| Funding Stage | ||
| Funding Stage | Series A | Grant |
| Total Funding | ||
| Total Funding | $145.00M | $224.10M |
| Funding Rounds | ||
| Funding Rounds | 3 | 9 |
| Services | ||
| Services | Battery Development and Manufacturing, Research and Development of Lithium-Based Technologies, Pilot Production and Testing | Development of all-solid-state batteries, Battery technology partnerships, Manufacturing scale-up for battery cells |
| Target Customers | ||
| Target Customers | EV Manufacturers, Automotive Industry Innovators, Clean Technology Companies, Energy Storage Solution Designers | Electric Vehicle Manufacturers, Automotive Industry, Battery Manufacturers |
| Taxonomy | ||
| Taxonomy | Battery Technology, Energy Storage, Lithium-Metal Batteries, Licerion Technology, Dendrite Minimization, Lithium-Sulfur Chemistry, High-Energy Density, Electric Vehicles, Rechargeable Batteries, Portable Power, Mobile Electronics, Patent Portfolio, Battery Design And Manufacturing, Large-Format Cells, Battery Innovation | All-Solid-State Batteries, Electric Vehicles, Mobile Power Markets, Sulfide Solid Electrolyte, Battery Safety, Energy Density, Battery Pack Design, Electric Vehicle Batteries, Portable Electronics, Battery Manufacturing, Aircraft Power Solutions, Satellite Power Solutions, Battery Reliability, Rechargeable Batteries |
| Website | ||
| Website | sionpower.com | solidpowerbattery.com |
About Sion Power Corporation
Sion Power Corporation, headquartered in Tucson, Arizona, stands at the forefront of battery technology innovation with its slogan, "Building the Future of Batteries." Founded in 1995, this 35-year-old company excels in energy storage solutions, specifically targeting the electric vehicle (EV) marke...
About Solid Power, Inc.
Solid Power, Inc., founded in 2011 and headquartered in the United States, is at the forefront of innovation in the Energy sector, particularly within Renewable Energy and Energy Storage. The company distinguishes itself with its focus on all-solid-state rechargeable batteries, primarily targeting t...
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Compiled from the BounceWatch company index. We last looked at Sion Power Corporation on 18 Aug 2025, and Solid Power, Inc. on 18 May 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.