# Joe Kastner

> Joe Kastner is a startup investor at Fotowatio Renewable Ventures. See 0 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Fotowatio Renewable Ventures](https://shizune.co/investors/profile/fotowatio-renewable-ventures)
- Last updated: Aug 2026

Joe Kastner is a startup investor at Fotowatio Renewable Ventures.

## Contacts

5 contacts available for Joe Kastner: 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/joe-kastner?utm_source=investor_profile

## About Fotowatio Renewable Ventures

VC Fund · Madrid, Spain

Fotowatio Renewable Ventures is providing comprehensive renewable energy solutions across the globe.We believe in improving energy performance and competitiveness and transforming these solutions into the most economic, sustainable and accessible options for our clients, investors, governments and, of course, users.We believe that the use ofrenewable energy is the key to our future The transformation of the energy market, and the increasing shift towards sustainability, will positively impact mankind at all levels, socially, environmentally and economically. For this reason we remain committed to our founding focus: to demonstrate that energy produced through renewable sources is the best possible alternative to fossil fuels thereby contributing to improving and protecting our future.We pursue success through commitment and innovation; finessing our capabilities and forging a solid path of experience and expertise over the last decade, which forms the foundation of our business today.As a strong advocate of sustainability, FRV is a young and entrepreneurial business. We have consolidated our position in the renewable energy market due to the transparency and governance of our operations, and the proven results we have achieved.We are proud that each of our projects has fully delivered on original investment expectations, with regards to both quality and productivity; generating returns for investors and providing energy for consumers at competitive prices.Building on our established leadership in the solar energy sector, we are now using this as the basis to become a spearhead in the wider renewable energy industry worldwide. The combination of our pioneering spirit and superior technical knowledge allows us to create innovative solutions to drive change for a more sustainable future.

4 contacts available at Fotowatio Renewable Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Borja Guinea | COO | https://shizune.co/investors/profile/borja-guinea |
| Daniel Sagi Vela | CEO | https://shizune.co/investors/profile/daniel-sagi-vela |
| Joe Kastner | Founder | https://shizune.co/investors/profile/joe-kastner |
| Rafael Benjumea | CEO | https://shizune.co/investors/profile/rafael-benjumea |

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