# Stefan Mueller

> Stefan Mueller is a seed investor at Enerparc (Hamburg) backing Energy and Software. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Enerparc](https://shizune.co/investors/profile/enerparc)
- Location: Hamburg, Germany
- Total investments: 2
- Last investment: Sep 2025
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/stefan-mueller-7974174a

Stefan Mueller is a seed investor at Enerparc in Hamburg focused on Energy and Software. Stefan Mueller is the Co-Founder and Board Member of Enerparc. He previously worked at Conergy Group as a MD APAC.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $2.9M–$7.4M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Energy | 1 | 50% |
| Software | 1 | 50% |
| Clean Energy | 1 | 50% |
| Renewable Energy | 1 | 50% |
| Energy Efficiency | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| encentive | We provide an energy demand management platform that connects energy providers with energy demanding appliances. We solve the problem of wasting valuable renewable energy by rewarding appliance owners for shifting their electricity demand to times when renewable energy is abundant. We put renewable energy to work. Efficient, scalable and fullyautomated! | $7.4M | Seed | Sep 15, 2025 |  |
| encentive | We provide an energy demand management platform that connects energy providers with energy demanding appliances. We solve the problem of wasting valuable renewable energy by rewarding appliance owners for shifting their electricity demand to times when renewable energy is abundant. We put renewable energy to work. Efficient, scalable and fullyautomated! | $2.9M | Seed | Jan 22, 2024 |  |

2 of 2 investments shown.

## Co-investors
- [SIVentures (prev. Smart Infrastructure Ventures)](https://shizune.co/investors/profile/smart-infrastructure-ventures) — VC Fund, 2 deals together
- [Summiteer](https://shizune.co/investors/profile/summiteer) — VC Fund, 2 deals together
- [Vireo Ventures](https://shizune.co/investors/profile/vireo-ventures) — VC Fund, 2 deals together
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund, 1 deal together
- [Hello World](https://shizune.co/investors/profile/hello-world-021b) — VC Fund, 1 deal together
- [Interface Capital](https://shizune.co/investors/profile/interface-capital) — VC Fund, 1 deal together

## About Enerparc

VC Fund · Oakland, United States

Enerparc specializes in developing, engineering, building and operating distributed utility-scale photovoltaic (PV) projects.

3 contacts available at Enerparc.

| Name | Title | Profile |
| --- | --- | --- |
| Christoph Koeppen | CEO | https://shizune.co/investors/profile/christoph-koeppen |
| Frank Muellejans | CFO | https://shizune.co/investors/profile/frank-muellejans |
| Stefan Mueller | Co-Founder & Board Member | https://shizune.co/investors/profile/stefan-mueller-f048 |

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## FAQ

### What does Stefan Mueller invest in?

Stefan Mueller invests primarily in Energy, Software and Clean Energy startups, most often at Seed stage. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Stefan Mueller's check size?

Stefan Mueller typically joins rounds of $2.9M–$7.4M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Stefan Mueller participates in.

### When did Stefan Mueller last invest?

The most recent investment recorded for Stefan Mueller closed in Sep 2025. Shizune tracks 2 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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