Company details
Ostrom
Digital green energy supplier serving German households with a fully online flat-rate tariff and a transparent dynamic pricing option.
Straßburger Straße 55, 10405 Berlin
Stability signals
- CEO
- Matthias Martensen
- Founders
- Matthias Martensen, Karl Villanueva
- Total raised
- €40M+ (as reported 2025-06-20)
- Recent rounds
- June 2025 · €20M · Series B
- January 2022 · €4M · Pre-seed / Seed
- Founders' prior
companies - Oliver Wyman
- Google rating
- 4.2 ★ · 807 reviewsOstrom (Ostrom GmbH, Straßburger Str. 55, 10405 Berlin, Germany
- Recent evidence
Commercial Operating Scale · Ostrom operates NeoGrid as a live residential virtual power plant that coordinates household EV charging through its energy service.
Scope: Ostrom GmbH German electricity/energy platform; operating connected-energy service, not cash profitability or new financing.
Evidence reviewed 2026-10-24. This claim does not establish overall financial stability.
Verification needed
At a glance
Open roles
3
activeNew this month
0-2
Down from last monthNew openings
3
opened in the last 90 daysGerman requirement
100%
based on 3 of 3 rolesOpen roles over time
Open roles · 12 months
3open
2025-12 → 2026-11Month-end counts · Nov shows current open roles
3 open roles
- Berlin / Remote
- 3