Ostrom: Funding, Investors & Team (Sep 2026)
Ostrom is a digital-first green energy provider in Germany that is revolutionizing how people manage and use electricity. It replaces outdated contracts and service models with a modern platform that offers 100% renewable energy, flexible monthly terms, and a user-friendly experience. By combining smart technology with a straightforward pricing structure, Ostrom helps users switch, monitor, and decrease their energy consumption without the typical hassles of the traditional energy market. Its Home Energy Management System (HEMS) efficiently controls assets like EVs, heat pumps, and solar PV, powering NeoGrid, Germany's first virtual power plant (VPP), to support the grid and incentivize consumers.
Ostrom has raised $40.7M across 3 funding rounds on record, the most recent a Series B of $22.9M announced in Jun 2025.
That round is above the $15M median round size for Energy companies tracked on FundedIQ over the last two years.
Ostrom Company Profile and Key Stats
Latest funding round on record: Jun 2025.
Ostrom Funding Rounds
Ostrom raised $9.8M in a Series A announced in Dec 2022.
9 months later, a Series A of $8.0M was announced in Sep 2023.
1.8 years later, a Series B of $22.9M was announced in Jun 2025.
Ostrom Founders and Leadership Team
Contact details for the Ostrom team: 2 of 2 have an email address on file.
Start 14-day free trial →Ostrom Funding Compared to Other Energy Startups
Ostrom's latest round of $22.9M is above the median round in Energy. Medians cover the last 24 months of disclosed rounds.
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Ostrom Funding FAQs
What does Ostrom do?
Ostrom is a digital-first green energy provider in Germany that is revolutionizing how people manage and use electricity. It replaces outdated contracts and service models with a modern platform that offers 100% renewable energy, flexible monthly terms, and a user-friendly experience. By combining smart technology with a straightforward pricing structure, Ostrom helps users switch, monitor, and decrease their energy consumption without the typical hassles of the traditional energy market. Its Home Energy Management System (HEMS) efficiently controls assets like EVs, heat pumps, and solar PV, powering NeoGrid, Germany's first virtual power plant (VPP), to support the grid and incentivize consumers.
How much funding has Ostrom raised?
Ostrom has raised $40.7M across 3 rounds on record. The most recent is a Series B of $22.9M announced in Jun 2025.
When did Ostrom last raise funding?
Ostrom's most recent funding round on record is a Series B of $22.9M, announced in Jun 2025.
Who founded Ostrom?
FundedIQ lists Karl Villanueva (Founder) at Ostrom.
Who is the CEO of Ostrom?
Matthias Martensen is listed as CEO at Ostrom.
Where is Ostrom headquartered?
Ostrom is based in Berlin, Germany.
How many employees does Ostrom have?
Ostrom is in the 11-50 employee band.
How does Ostrom's funding compare to other Energy startups?
Ostrom's latest round of $22.9M is above the $15M median round size for Energy companies on FundedIQ across 2,284 tracked companies over the last two years.
About FundedIQ's Ostrom Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Ostrom is left off this page rather than filled in.
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