# Franz Waltenberger

> Franz Waltenberger is a pre-seed investor at CDTM Venture Fund backing Clean Energy. See 1 investment, round sizes, portfolio and contact details. Updated…

- Type: Angel Investor
- Fund: [CDTM Venture Fund](https://shizune.co/investors/profile/cdtm-venture-fund)
- Location: Munich, Germany
- Total investments: 1
- Last investment: Jul 2026
- Lead investor: 0%
- Last updated: Oct 2026
- LinkedIn: https://www.linkedin.com/in/franz-xaver-waltenberger
- X (Twitter): https://x.com/MF_Waldo

Franz Waltenberger is a pre-seed investor at CDTM Venture Fund in Munich focused on Clean Energy and Energy Storage. Franz Waltenberger is based out of Munich, Bayern, and is the Managing Director and Co-Founder of CDTM Venture Fund. Franz previously worked at the Center for Digital Technology and Management as a Management Team, University Lecturer, and Doctoral Candidate. Franz Waltenberger attended Technical University of Munich.

## Contacts

5 contacts available for Franz Waltenberger: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/franz-waltenberger?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Clean Energy | 1 | 100% |
| Energy Storage | 1 | 100% |
| Renewable Energy | 1 | 100% |
| Artificial Intelligence | 1 | 100% |

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Celsio | Celsio operates as a next-generation electricity provider transforming power market volatility into savings for heat-intensive industries. The company integrates electric heating assets (Power-to-Heat) and thermal storage into existing fossil-fueled industrial infrastructure without disrupting manufacturing processes. Utilizing a proprietarycross-market AI algorithm, Celsio forecasts trading opportunities across short-term electricity and balancing power markets | $1.4M | Pre-Seed | Jul 28, 2026 | https://www.celsiotech.de/ |

1 of 1 investments shown.

## Co-investors
- [Caesar.vc](https://shizune.co/investors/profile/caesar-vc) — VC Fund, 2 deals together

## About CDTM Venture Fund

VC Fund

CDTM Venture support founders and invest in the next generation of CDTM firms

1 contacts available at CDTM Venture Fund.

| Name | Title | Profile |
| --- | --- | --- |
| Franz Waltenberger | Managing Director & Co-Founder | https://shizune.co/investors/profile/franz-waltenberger |

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## FAQ

### What does Franz Waltenberger invest in?

Franz Waltenberger invests primarily in Clean Energy, Energy Storage and Renewable Energy startups, most often at Pre-Seed stage. Most of the 1 investments tracked by Shizune back companies in Germany. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Franz Waltenberger?

Public channels for Franz Waltenberger include LinkedIn and X (Twitter). For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did Franz Waltenberger last invest?

The most recent investment recorded for Franz Waltenberger closed in Jul 2026. Shizune tracks 1 investment in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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