We enable Tech Companies to solve global sustainability challenges


About Us

Fortress Fund is an active pre-seed investor in Norwegian tech companies solving global sustainability challenges.

We first invest in pre-seed rounds, typically between 1-2MNOK for 10% ownership, and then aim to follow up in the next rounds with 3-4MNOK.

After the initial investment, we personally guide you in scaling your venture and preparing for the next fundraising rounds (Seed, Series A).

Why Us?

We are company-builders and domain experts within AI, Digital Energy Systems, and Smart City. Having founded multiple companies, we are ready to roll up our sleeves and help you scale to international markets.

Through having helped 100+ companies over the last five years, we have developed a deep understanding og what it takes to transform a ground-breaking idea into a scalable business.

Our Approach

Our terms are founder-friendly, and we will actively support you in building and scaling your venture to international markets. We share our vast network and domain experience to help you move faster. We like to be able to take board seats, and we usually spend our time tweaking your business model, go-to-market plan, fundraising strategy, and technology roadmap and helping build a strong team.

What does
Fortress Fund
Invest in?




Digital Energy Systems

Investment Team

Who We Are

We are a successful team of seasoned entrepreneurs and experienced investors who are experts at finding great ideas to invest in. Our efforts are focused on selecting talented teams and companies with great potential.


Lorenzo Ruscelli

Fund Manager / CEO

  • LinkedIn

Ståle Bjørnstad

Investment Manager

  • LinkedIn

Eli Haugerud

Investment Manager

  • LinkedIn

Knut Johansen

Investment Manager

  • LinkedIn

Stian Johansen


  • LinkedIn


In order for us to evaluate companies we require the following documents to be uploaded in the asked formats.

We will not reply or evaluate companies that fail to provide us with the requested information.

Håkon Melbergs Vei 16, 1783 Halden

Upload PDF / Word
Upload PDF / PPT
Upload Excel / PDF / PPT
Upload Excel / PDF

Thank you for contacting us! You will hear from us very soon!