Xcimer Energy
Fusion startup developing a commercial fusion power plant.
About
Xcimer Energy is a fusion energy startup focused on developing a commercial fusion power plant. Their approach is modeled after the National Ignition Facility (NIF) and utilizes powerful excimer lasers, specifically krypton-fluoride lasers, to achieve controlled fusion reactions. The company aims to leverage more powerful and less complex lasers to make fusion power profitable.
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Key facts
- Website
- xcimerenergy.com
- Headquarters
- Livermore, United States
- Founded
- 2021
- Total funding
- $10M (Seed)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 1 Jan 2023 | Seed | $10M | Breakthrough Energy Ventures |
Tech stack
Detected on xcimerenergy.com, last scanned 3 Jun 2026. Run your own scan
- Compliance
- GDPR, CCPA
- Frontend
- jQuery
- Analytics
- Google Analytics 4, Google Tag Manager
- SEO
- Yoast SEO
- CMS / Builders
- WordPress
- CDN
- Cloudflare
- Hosting
- AWS
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Frequently asked
What does Xcimer Energy do?
They have recently activated their 'Phoenix' laser system, which they claim is the largest privately owned laser in the world. Xcimer plans to complete a prototype in 2028, followed by a larger system, with the goal of building its first commercial-scale power plant in the mid-2030s.
Is Xcimer Energy trustworthy and reputable?
StartupHub's Data Trust & Reputation score for Xcimer Energy is 85 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
How much funding has Xcimer Energy raised?
Xcimer Energy has raised a total of $10M in funding. The most recent round on record is Seed.
What is Xcimer Energy's current status?
Xcimer Energy's current operating status is: Inactive.
Public record
SEC filings, insider activity, nonprofit links and pay benchmarks for Xcimer Energy

