How much funding has Realta Fusion raised?

Realta Fusion has raised $45.0M in total funding, most recently a Series A round.

Who are Realta Fusion's investors?

Realta Fusion's investors include Khosla Ventures, Future Ventures, Mayfield Fund, GSBackers, TitletownTech, Wisconsin Alumni Research Foundation.

When was Realta Fusion founded?

Realta Fusion was founded in 2022.

Where is Realta Fusion headquartered?

Realta Fusion is headquartered in Madison, Wisconsin, United States.

What industry is Realta Fusion in?

Realta Fusion operates in Clean Energy, Deep Tech, Hardware.

How many employees does Realta Fusion have?

Realta Fusion has 11-50 employees.

Realta Fusion

Compact, Scalable, Modular – CoSMo fusion™ – energy systems

Madison, United States · Founded 2022 · $45.0M raised

Clean Energy

Deep Tech

Hardware

Headquarters: Madison, Wisconsin
Employees: 11–50
Founded: 2022
Business Model: B2B

Website: realtafusion.com
Total Funding: $45.0M
Last Round: $36.0M Series AMay 2025
Rounds: 2

About

Develops compact, scalable modular fusion energy systems for industrial heat and power, targeting zero-carbon energy for hard-to-decarbonize processes.

Summary

Realta Fusion is a Clean Energy company based in Madison, United States, founded in 2022. It has raised $45.0M in total across 2 rounds, most recently a $36.0M Series A round in May 2025. Investors include Khosla Ventures, Future Ventures and Mayfield Fund.

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