# Sarah Fleischer

> Sarah Fleischer is a pre-seed investor backing Clean Energy and Energy Storage. See 1 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Total investments: 1
- Last investment: Jul 2026
- Lead investor: 0%
- Last updated: Aug 2026

Sarah Fleischer is a pre-seed investor focused on Clean Energy and Energy Storage.

## Contacts

5 contacts available for Sarah Fleischer: 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/sarah-fleischer-9973?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 | Amount | 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
- [CDTM Venture Fund](https://shizune.co/investors/profile/cdtm-venture-fund) — VC Fund, 1 deal together

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### Similar country
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## Featured in investor lists
- [Clean Energy Angel Investors in Germany](https://shizune.co/investors/clean-energy-angel-investors-germany)

## FAQ

### What does Sarah Fleischer invest in?

Sarah Fleischer 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 Sarah Fleischer?

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 Sarah Fleischer last invest?

The most recent investment recorded for Sarah Fleischer closed in Jul 2026. Shizune tracks 1 investments 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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