# CalCEF Clean Energy Angel Fund

> CalCEF Clean Energy Angel Fund is a VC fund backing Manufacturing and Energy. See 7 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: San Francisco, United States
- Total investments: 7
- Last investment: Apr 2012
- Lead investor: 0%
- Last updated: Aug 2026
- X (Twitter): http://twitter.com/CalCEFAngelFund
- Website: http://www.calcefangelfund.com

CalCEF Clean Energy Angel Fund is a VC fund in San Francisco focused on Manufacturing and Energy. CalCEF Clean Energy Angel Fund invests in clean energy companies and is a San Francisco-based seed- and early-stage venture capital fund.

## Contacts

5 contacts available for CalCEF Clean Energy Angel Fund. Shizune tracks 3 team members at CalCEF Clean Energy Angel Fund. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/calcef-clean-energy-angel-fund?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Manufacturing | 2 | 29% |
| Energy | 1 | 14% |
| Biofuel | 1 | 14% |
| Chemical | 1 | 14% |
| Oil and Gas | 1 | 14% |

11 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 3 | 43% |
| Seed | 2 | 29% |
| Series B | 1 | 14% |
| Series C | 1 | 14% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Danny Kennedy | Managing Director | 2 | https://shizune.co/investors/profile/danny-kennedy |
| Ian Rogoff | Member | 0 | https://shizune.co/investors/profile/ian-rogoff |
| Ken Goldsholl | Partner | 0 | https://shizune.co/investors/profile/ken-goldsholl |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Alphabet Energy | Alphabet Energy, Inc. is commercializing a breakthrough, inexpensive waste heat recovery technology developed at the Lawrence Berkeley National Laboratory. Our revolutionary thermoelectric approach and materials platform is the only of its kind that lends itself to massive scale at low cost. With our products, made entirely from sustainablematerials, customers may use their waste heat to generate electrical power in the range of microwatts to megawatts. |  | Series C | Jul 13, 2016 |  |
| Boulder Ionics | Boulder Ionics is a rapidly growing start-up that produces ionic liquids and ionic liquid based electrolytes for demanding electrochemical applications. Using a proprietary high-throughput synthesis platform, Boulder Ionics is able to manufacture ultra-high-purity ionic liquids at a superior price/performance ratio. Boulder Ionics’ advancedIolyte™ electrolytes and pure ionic liquids have applications in a wide range of products ranging from ultracapacitors to lithium-ion batteries and next generation metal-air batteries. The company is currently working with several strategic partners and industry leaders and expects full integration of Iolyte™ electrolytes into a growing number of commercial products by mid-2012. | $4.3M | Series A | Apr 27, 2012 |  |
| Alphabet Energy | Alphabet Energy, Inc. is commercializing a breakthrough, inexpensive waste heat recovery technology developed at the Lawrence Berkeley National Laboratory. Our revolutionary thermoelectric approach and materials platform is the only of its kind that lends itself to massive scale at low cost. With our products, made entirely from sustainablematerials, customers may use their waste heat to generate electrical power in the range of microwatts to megawatts. |  | Seed | May 03, 2010 |  |
| Allopartis | Allopartis develops enzymes to convert biomass into sugar for cellulosic biofuel production and industrial biotechnology. |  | Series A | Aug 16, 2008 |  |
| RSI (Reel Solar Inc) | RSI provides technology, tools, materials and know-how to the leaders in photovoltaic manufacturing. The company has developed a proprietary process for Rapid Efficient Electroplating on Large-areas (REEL). RSI works with regional manufacturing partners to deliver the lowest cost locally manufactured photovoltaic modules. The company was founded in2009 by a team of capital equipment veterans based in Silicon Valley, California. Co-investors include CalCEF Angel Fund, CMEA, Mayfield Fund, Nth Power, and Pangaea Ventures. | $4M | Seed |  |  |
| Alphabet Energy | Alphabet Energy, Inc. is commercializing a breakthrough, inexpensive waste heat recovery technology developed at the Lawrence Berkeley National Laboratory. Our revolutionary thermoelectric approach and materials platform is the only of its kind that lends itself to massive scale at low cost. With our products, made entirely from sustainablematerials, customers may use their waste heat to generate electrical power in the range of microwatts to megawatts. |  | Series B |  |  |
| Alphabet Energy | Alphabet Energy, Inc. is commercializing a breakthrough, inexpensive waste heat recovery technology developed at the Lawrence Berkeley National Laboratory. Our revolutionary thermoelectric approach and materials platform is the only of its kind that lends itself to massive scale at low cost. With our products, made entirely from sustainablematerials, customers may use their waste heat to generate electrical power in the range of microwatts to megawatts. |  | Series A |  |  |

7 of 7 investments shown.

## Co-investors
- [Claremont Creek Ventures](https://shizune.co/investors/profile/claremont-creek-ventures) — VC Fund, 4 deals together
- [Pangaea Ventures](https://shizune.co/investors/profile/pangaea-ventures) — VC Fund, 2 deals together
- [TPG Biotech](https://shizune.co/investors/profile/tpg-biotech) — VC Fund, 2 deals together
- [General Motors Ventures](https://shizune.co/investors/profile/general-motors-ventures) — VC Fund, 1 deal together
- [Osceola Capital Management](https://shizune.co/investors/profile/osceola-capital-management) — VC Fund, 1 deal together
- [SLB](https://shizune.co/investors/profile/schlumberger) — VC Fund, 1 deal together

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## FAQ

### What does CalCEF Clean Energy Angel Fund invest in?

CalCEF Clean Energy Angel Fund invests primarily in Manufacturing, Energy and Biofuel startups, most often at Series A and Seed stage. Most of the 7 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact CalCEF Clean Energy Angel Fund?

Public channels for CalCEF Clean Energy Angel Fund include X (Twitter) and the website linked on this profile. 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.

### Who are the partners at CalCEF Clean Energy Angel Fund?

The team at CalCEF Clean Energy Angel Fund includes Danny Kennedy (Managing Director), Ian Rogoff (Member) and Ken Goldsholl (Partner). The Team section lists each member with their title, investment count and links.

### 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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