Ostrom

Ostrom GmbH

Berlin, Germany

SolarWindHydroEnergy StorageLimited company

Founded 202111-50 employees

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Profile last updated: September 6, 2026

About

Founded in 2021, Ostrom is a limited company headquartered in Berlin, Germany with approximately 11-50 employees specializing in Solar, Wind, Hydro.

Ostrom is a German green electricity supplier that sells 100% renewable electricity sourced from wind, solar and hydro, certified by TÜV Nord. Its offering includes fixed and dynamic tariffs with monthly cancellation and a flat monthly fee instead of a per-kWh markup. The company provides a digital app for tracking consumption, meter readings, smart meter ordering and smart home control, and operates NeoGrid AI, a virtual power plant for electric vehicles and home batteries. Ostrom was founded in Berlin in 2021, became a Certified B Corporation in 2023, and has raised venture funding including a Series B round led by Eneco Ventures.

Headquarters

Berlin, Germany

Founded

2021

Employees

11-50

Company type

Limited company

Focus areas

green electricityrenewable energydynamic tariffvirtual power plantsmart meterEV chargingheat pumpsmart homeB Corpdigital energy provider

Products & services

Business models

B2CB2B

Value chain

Retail

Service areas (3)

Residential electricity supply
Renewable electricity tariffs (fixed and dynamic) for households, with app-based energy management.
Business electricity supply
Renewable electricity supply for businesses.
Smart EV charging and smart home integration
Smart charging, heat pump and smart thermostat control via the Ostrom app, and smart meter ordering support.

Locations

Headquarters

Straßburger Straße 55, 10405, Berlin, Germany

Service regions

Germany

Projects

NeoGrid AI

OperationalVirtual power plant

Virtual power plant that connects electric vehicles and home batteries to optimise electricity purchase and sale and provide grid flexibility, with customers earning NeoGrid Credits.

Germany

Credentials & affiliations

Certifications

Certified B Corporation

Issued by: B Lab

TÜV Nord certified 100% renewable electricity

Issued by: TÜV Nord

Awards

World's Best Challenger Brand

Industry memberships

Smart Meter Initiative

Partnerships

Vaillant, Viessmann Climate Solutions, E3/DC, Zaptec, Bullfinch, be.storaged, Soly, MVV, Homey, priwatt

Frequently asked questions

published by the company

What is Ostrom's SimplyFair tariff?

SimplyFair is our standard green energy tariff with transparent pricing and no hidden costs. It offers monthly flexibility with 100% renewable energy.

What is Ostrom's SimplyDynamic tariff?

SimplyDynamic is our hourly-priced green energy tariff that requires a smart meter. It's perfect for optimizing EV charging and smart home energy usage based on real-time market rates.