Sion Power

Tucson, AZ · Founded 1989 · Privately Held (backing)

Developer of energy storage systems designed to address the future needs of the electric vehicle and aerospace markets today. Sion Power is based in Tucson, AZ and was founded in 1989. It was valued at $435 million at its later-stage round in Jan 2024, the last priced event on record. It has raised $145 million across 2 recorded rounds; the latest was a $240 million later-stage round in Nov 2021.

PMV mark · valuation
$435.0M
Oct 2026
Priced at
its later-stage round
Jan 2024
Total raised
$144.5M
Last round
Later Stage VC
Nov 2021
How much has Sion Power raised?
$144.5Macross 2 recorded rounds · Nov 2021 – Nov 2021

Most recently, Sion Power raised $240.3M in its Later Stage VC (Nov 2021).

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Sion Power round by round

2 rounds
Nov 2021Later Stage VC$240.3MSEC filing▮
5 investors participated
Nov 2021Early Stage VC$20.0MSEC filing▮
5 investors participated

How much has Sion Power raised?

Sion Power has raised $145 million across 2 recorded rounds since 2021. The largest was a $240 million later-stage round in Nov 2021.

Sion Power has filed 4 Form Ds with the SEC since 2011, most recently in Nov 2021 ($20 million sold to 5 investors).

Sion Power investors

11 investors are on record for Sion Power, including U.S. Department of Energy, United States Department of War, National Aeronautics and Space Administration and LG Technology Ventures. The later-stage round in Nov 2021 drew 5 investors.

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11 investors have backed Sion Power.

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Frequently asked about Sion Power

How much has Sion Power raised?
Sion Power has raised $144.5M in total across 2 recorded funding rounds.
When was Sion Power's last funding round?
Sion Power's most recent recorded round was Later Stage VC in Nov 2021, raising $240.3M.