The same Ostrom SimplyFair and SimplyDynamic tariffs also works with heat pumps and smart thermostats via our Ostrom app! Get all the benefits of Ostrom all while heating your home at the cheapest and greenest hours. Sign up today!
Benefit from electricity at cost price — no hidden fees! All tariffs are risk-free monthly cancellable.
Our energy is always from 100% renewable sources. That's why Ostrom is a certified B Corp™.
Get access to everything stress-free through the Ostrom App. No paper, no fax!
Since we want to help reduce your energy consumption, we detach our profits from it. In contrast to traditional providers, our SimplyFair tariff is based on the current market price, including government taxes and levies.
We only charge a flat 6€ basic fee to cover our costs, that's it!
6 € Ostrom Basic Fee
Energy Generation Costs
Other Taxes + Govt. Levies
Grid Fees
Because let’s be honest: it’s overdue. Simply sign up on our website and manage everything in our app. No need for "email templates" or translation apps!
Access your annual invoices, submit and track your meter readings, and adapt your monthly payments all within the Ostrom app.
Our team responds quickly – much faster than elsewhere! Got questions? Just ask us in the live chat.
Deutsche Sprache, schwere Sprache. We're a proud German startup, but we also know our language ain’t easy. To maintain full transparency we offer everything — from signup to contract — in English as well.
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You can sign up with or without a smart meter, it’s up to you! We offer our SimplyFair tariff for customers with a regular digital meter or our SimplyDynamic with hourly pricing—smart meter required.
Simply sign up for SimplyFair, and if you have a supported smart meter installed, you will be automatically switched to SimplyDynamic. No more worries checking if you have a smart meter or not!
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.
Ostrom is the only energy provider that has the same incentives as you — to use less electricity! With our flat 6 € basic fee, we earn the same from a small flat as from a large house. Therefore, unlike every other energy provider, we genuinely want you to use less electricity.
Oh yeah, and we have our top-rated app... and our incredible customer support... and our smart integrations... and our certified green energy...
No, there’s no need to wait! Even if your current contract has up to 12 months remaining, you can sign up early with Ostrom today. Just sign up now, and we’ll take care of the rest — once your existing contract ends according to pre-agreed terms, we will seamlessly switch you to Ostrom.
SimplyFair: Our original transparent tariff for all! Easily add meter readings to track your consumption on our app. Energy prices track the market prices on a monthly basis. In fact, in the last 2 years we’ve already decreased prices seven times!
SimplyDynamic: Our smart-meter compatible tariff! For those customers who already have a smart meter, automatically see your energy consumption on an hourly basis. This means you can take advantage of low prices when the sun shines or the wind blows!
Both have all the great features for all Ostrom customers: risk-free monthly cancellable contract, all the features of the Ostrom App (smart home integrations, referrals, perks, CO2 tracking, Ostrom Store, live customer chat & more!)
While energy prices change often, our SimplyFair tariff removes that complexity for our customers. It's the perfect balance between dynamic prices that change hourly and 24-month contracts that keep you locked in to a high price (think households in 2025 still paying 2022 prices).
We truly stick to our electricity-at-cost model. This means that unlike our competitors whose prices mostly only go up, we even pass on decreases as well. Since our monthly fixed fee means we do not profit from price increases, increases only happen when market prices change significantly, such as during the energy crisis a few years ago. However since then, we have decreased prices 7 times and only increased once, still achieving a significantly cheaper price over time.
Yes! Both our SimplyFair and SimplyDynamic tariffs do not have the typical 12- or 24-month minimum contract periods like every other provider. We want you to stay because you want to, not because you have to.
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