Realta Fusion

Madison, WI · Founded 2022 · Privately Held (backing)

Operator of an energy company intended to produce industrial heat and power from fusion energy. Realta Fusion is based in Madison, WI and was founded in 2022. It was valued at $106 million at its early-stage round in May 2025, the last priced event on record. It has raised $54 million across 2 recorded rounds; the latest was a $35.5 million early-stage round in May 2025.

PMV mark · valuation
$105.5M
Oct 2026
Priced at
its early-stage round
May 2025
Total raised
$54.0M
Last round
Early Stage VC
May 2025
How much has Realta Fusion raised?
$54.0Macross 2 recorded rounds · May 2023 – May 2025

Most recently, Realta Fusion raised $35.5M in its Early Stage VC (May 2025).

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Realta Fusion round by round

2 rounds
May 2025Early Stage VC$35.5MSEC filing▮
15 investors participated
May 2023Early Stage VC$9.0MSEC filing▮
2 investors participated

How much has Realta Fusion raised?

Realta Fusion has raised $54 million across 2 recorded rounds since 2023. The largest was a $9 million early-stage round in May 2023; the most recent was a $35.5 million early-stage round in May 2025.

Realta Fusion has filed 2 Form Ds with the SEC since 2023, most recently in May 2025 ($35.5 million sold to 15 investors).

Realta Fusion investors

17 investors are on record for Realta Fusion, including Alumni Ventures, Khosla Ventures, U.S. Department of Energy and Future Ventures (San Francisco). By type, the record holds 7 venture capital firms. The early-stage round in May 2025 drew 15 investors.

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Frequently asked about Realta Fusion

How much has Realta Fusion raised?
Realta Fusion has raised $54.0M in total across 2 recorded funding rounds.
When was Realta Fusion's last funding round?
Realta Fusion's most recent recorded round was Early Stage VC in May 2025, raising $35.5M.