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Dynamic tariff, fully optimized.

✓ 100% stress-free switching service
✓ Benefit from hourly prices
✓ Over 100.000 satisfied customers
✓ Compatible with the Viessmann HEMS
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    What Is A Dynamic Tariff?

    Our dynamic tariff updates every hour to match the real electricity market price — so you always pay what energy actually costs. When solar and wind production are high, prices drop. In the evenings, when demand increases, they rise. By shifting your consumption to the cheapest hours, you can save up to 35 % — and the Ostrom App makes it easy for you.
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    Multiple Award-Winning Electricity Provider

    The numerous awards we have received in recent years confirm our commitment to setting the highest standards of quality, transparency and customer focus. With our English-language support, we help you understand the German energy market and support you if problems arise.
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    Benefits At A Glance:

    Electricity At Market Price
    We don’t add any profit margin to the electricity you use. You only pay a 6 € monthly service fee — that’s as fair as it gets. Even Stiftung Warentest and Finanztip agree.
    Benefit From Affordable Solar And Wind Power
    With a dynamic tariff, you benefit whenever renewable energy is abundant. When the sun shines or the wind blows, electricity prices fall — and your savings rise.
    Reduce Costs Through Optimization
    Optimize your energy use with the Ostrom App by shifting consumption to the cheapest hours. You’ll cut your electricity costs and support a cleaner grid — since the lowest prices usually mean the greenest energy.
    Stay Protected From High Prices
    With the Ostrom App, you can see tomorrow’s electricity prices and track your past usage — making it easy to avoid price spikes and stay in control of your costs.
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    Smart Meter: Precise Energy Tracking

    To use a dynamic tariff, you’ll need a Smart Meter — it’s the only way we can receive your hourly consumption data. The best part? You’ll never have to submit meter readings again. Learn more about the benefits and how to get your Smart Meter via Ostrom.
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    Your Dynamic Tariff in 3 Easy Steps

    Step 1
    Wechsel zu Ostrom
    Switch to Ostrom in just 5 minutes. We will take care of cancelling your previous electricity contract and ensure that your switch goes smoothly and without interruption.
    Step 2
    Order Your Smart Meter
    Don't have a smart meter yet? No problem. We'll help you apply for one. Once your smart meter is installed, we can record your electricity consumption on an hourly basis – the basis for smart saving.
    Step 3
    Switch To Hourly Billing
    As soon as we receive your consumption data, we will switch you to hourly billing. From then on, you can take full advantage of the cheapest hours.
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    Why Choose Ostrom?

    We are different from other energy providers. How?

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    Pay only what you consume each month
    Vergiss geschätzte Rechnungen oder Überzahlungen. Bei Ostrom zahlst du nur für den tatsächlichen Stromverbrauch. Transparenz, auf die du vertrauen kannst.
    Tariffs with a monthly contract term
    Fixed 12-month tariff
    Has a dynamic tariff
    100% certified green electricity
    Fast, friendly support
    Switching service with satisfaction guarantee
    Smart meter application service
    Ostrom App
    Self-service center
    1400+ compatible devices
    Bonus for charging your EV
    Overview of hourly electricity consumption
    Overview of solar production
    Smart features to reduce your electricity costs
    Real-time overview of your devices
    Ostrom
    Other Provider
    up to 300 €/year
    with Smart Meter
    Ostrom
    Andere
    Pay only what you consume each month
    Tariffs with a monthly contract term
    Fixed 12-month tariff
    Dynamic tariff
    100% certified green electricity
    Fast, friendly support
    Switching service with satisfaction guarantee
    Smart meter application service
    Ostrom App
    Self-Service Center
    1400+ compatible devices
    Bonus for charging your EV
    up to €300/year
    300€/Jahr
    Overview of hourly electricity consumption
    with smart meter
    Smart Meter
    Overview of solar production
    Smart features to reduce your electricity costs
    Real-time overview of your devices
    Ostrom SimplyFair
    Typical Energy Providers
    How You Are Charged
    Pay only for what you consume monthly
    Forget estimated bills or overpayments. With Ostrom, you’re charged only for the exact electricity you use, calculated monthly. It’s transparency you can trust.
    Not guaranteed
    1 month price guarantee
    With SimplyFair we keep it fair by closely monitoring market rates and passing on the best price to you. This means that prices may also sometimes rise, but these do not happen very often.
    Unit price changes hourly
    Save money by taking advantage of wholesale energy prices that change every hour. Use our SimplyDynamic tariff, powered by smart meters, to consume during cheaper times.
    Not guaranteed
    Monthly cancellable
    Flexibility matters. At Ostrom, we believe in freedom, not contracts. Cancel or adjust your plan at any time, without penalties or complications.
    How We Support You
    Manage through our feature-rich app
    From tracking your usage and payments in real-time to connecting smart devices and optimising your usage, the Ostrom App makes managing your electricity simple, digital, and paperless.
    Not guaranteed
    Friendly customer service in English
    Whether you need guidance or answers, our knowledgeable support team is here for you—in English or German. Enjoy fast responses via live chat or email.
    Not guaranteed
    4.8 Trustpilot rating
    Thousands of happy customers rate us highly for reliability, transparency, and a seamless experience. Don’t just take our word for it—check the reviews.
    Not guaranteed
    Handle switching for you
    Switching energy providers can feel overwhelming. That’s why Ostrom takes care of the entire process, ensuring your move is smooth and stress-free.
    Not guaranteed
    How We Go Above & Beyond
    Smart device integrations
    Connect your EV charger, heating system, solar systems, or other smart home devices to the Ostrom App for complete energy control. Optimize energy use and save money—all in one place.
    Not guaranteed
    Smart Meter installation support
    Curious about smart meters? We’ll guide you through the process of getting one installed, so you can enjoy dynamic pricing and real-time energy insights.
    Not guaranteed
    100% green energy
    With Ostrom, every kilowatt-hour is sourced from certified renewable sources. Reduce your carbon footprint while enjoying affordable, sustainable energy.
    Not guaranteed

    Green Energy Made Easy

    Switch and save in only 5 minutes

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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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