Ostrom Reviews & Ratings

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Look Who's Talking About Us

Trustpilot Reviews

Our customers’ voices speak volumes - literally! With a Trustpilot rating of 4.4 across thousands of reviews, we’re not just delivering green energy; we’re building trust and transparency at every step. We’re honored to be one of Germany’s best-rated energy providers, proving that fair pricing, top-tier service, and eco-friendly power can go hand-in-hand.

Ostrom Trustpilot reviews

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Google Erfahrungen

Our Google rating of 4.3 out of 5 stars is built on genuine customer experiences, each one a testament to our dedication to making green energy easy and accessible. From smooth sign-up to effortless app management, we’re making energy better - just ask the many happy customers who keep us at the top.

App Store

With a 4.7 rating in the App Store, our Ostrom App is a hit with over thousands of reviews who appreciate the convenience of green energy at their fingertips. From tracking consumption to managing bills, the app has everything our customers need to take control of their energy use with ease and confidence.

Ostrom app on Google Play Store
Ostrom Bewertungen im Apple App Store

Play Store

Our 4.2-star rating in the Play Store is all about making green energy as convenient as possible. With thousands of satisfied reviews, the Ostrom App delivers a seamless experience that lets you manage energy your way - whether it’s checking your bill, updating your details, or tracking your energy use anytime, anywhere.

Ostrom certified sealTÜV certified green electricity sealOstrom marketing visualService Champions Gold 2025 award sealOstrom Tagesspiegel Berlins Beste Arbeitgeber logo and certificate
B Corp certification badge

Proud To Be A B Corp™

Ostrom is now a Certified B Corporation meaning we are part of a global community working to make high social and environmental impact. This strengthens our commitment to creating a better workplace, community and environment.

Our B Corp™ Announcement

Stiftung Warentest Says...

"Most tariffs are around 21 cents. Ostrom is the cheapest and stands at 19.3 cents." The kilowatt-hour, including VAT and all additional costs, cost only 10.5 cents for our sample household in Berlin with Ostrom. The fixed costs at Ostrom amount to 16.2 cents per kilowatt-hour without VAT. If you subtract the negative electricity price of 7.4 cents from this and factor in VAT again, you arrive at this low price." (translated from German original)
Dyna­mic Electricity Tariffs Compared, 15.08.24

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What Our Customers Are Saying

We take pride in providing excellent customer service. But don’t just take our word for it: Hear it from customers who’ve already made the move to Ostrom.

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