Our customers’ voices speak volumes—literally! With a Trustpilot rating of 4.8 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.
Our Google rating of 4.8 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.
With a 4.8 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.
Our 4.6-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.
We’re TÜV Nord certified, which means our commitment to high-quality service and customer satisfaction is officially recognized. It’s not just about green energy—it’s about delivering a smooth, reliable experience that puts you first every step of the way. With Ostrom, you can count on TÜV-approved quality you can trust.
Awarded by Focus Money Deutschland Test as a top green electricity provider, we’re thrilled to lead the charge toward a cleaner future. This recognition highlights our commitment to transparent pricing, customer care, and a cleaner planet, proving that when it comes to sustainable energy, we’re here to make a real difference.
Our service is worth its weight in gold! We’re thrilled to be named a Gold Service Champion by WELT, a testament to our relentless focus on customer satisfaction. Whether it’s through our responsive support team or easy app experience, we make every step of your energy journey better, simpler, and stress-free.
We’re honored to be named one of Berlin’s Best Employers by Tagesspiegel! At Ostrom, we know that happy, supported employees make for happy customers, too. From flexible work options to a culture that values innovation, we’re building a workplace where our team can thrive as we power the green energy future.
As a Certified B Corp™, we are committed to using business as a force for good—prioritizing people and the planet in everything we do. This certification underscores our dedication to sustainability, transparency, and social responsibility—at Ostrom, green change is a lasting priority. With a B Corp score of 129.1, we rank among the highest in Germany, proving that responsibility and impact are more than just words to us.
"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 Tariff Comparison, Aug 15, 2024
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.
Switch and save in only 5 minutes!