Participated · Series A · Nov 2025

Exowatt’s core product is the P3 unit, a shipping-container-sized metal box topped with lenses that concentrate sunlight onto heat-retaining bricks. A fan carries the heat to a Stirling engine and generator, enabling each thermal battery to store energy for up to five days and deliver round-the-clock electricity. The system’s efficiency rivals photovoltaic solar plus lithium-ion storage, while its compact, modular design is intended to unlock mass manufacturing learning curves. Exowatt is targeting production of one million units per year, a scale that management says will let it hit its one-cent-per-kilowatt-hour cost goal. Demand appears strong: the company reports a backlog of roughly 10 million P3 units, equivalent to 90 GWh of capacity. Longer term, Exowatt intends to deploy millions—and eventually billions—of units to power the rapidly expanding fleet of AI data centers in sun-rich regions. The approach repurposes decades-old concentrated solar technology but packages it for low-cost, large-scale manufacturing.

Led · Equity · Jan 2024

MyRoomie provides an easy-to-use platform that offers vetted listings and roommate matching through a combination of ML-driven recommendations and manual vetting (background checks and interviews). The company enforces documentation checks and in-person moderation of listings to maintain quality. It has traction: 1,500 daily active users, 80% month-over-month growth, €3,000 MRR, 2,500 registered individuals, over 1,000 listings, and has enabled 75 accommodations (150 people). MyRoomie has grown through guerrilla marketing, mainstream media, word-of-mouth, and partnerships with agencies and larger companies. The team is working to improve and further automate its AI/ML models as user and listing volume grows. It is expanding into additional housing markets, currently targeting Poland, Czechia, and several other European markets and pursuing corporate and agency channels. Myroomie operates a roommate‑matching platform that aggregates co‑living ads and connects people seeking shared housing. The company has built a matching app that includes a brief interview and background‑check data collection, performed in line with GDPR. Myroomie plans to continue developing its matching technology, add new app features, and improve user experience. The team intends to use fresh capital to grow the team and expand its marketing efforts to become the go‑to app for finding roommates and apartments. The founder is Dominikos Pritis, who previously appeared on Dragons’ Den Greece where the platform attracted investor interest. Myroomie emphasizes ongoing product iteration and possible outsourcing of background‑check processes to specialist providers.