Dynamic tariff, fully optimized.

✓ 100% stress-free switching service
✓ Benefit from hourly prices
✓ Over 100.000 satisfied customers
✓ Compatible with the Viessmann HEMS

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.

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.

Benefits At A Glance:

Electricity At Market Price
With our dynamic tariff “SimplyDynamic”, you’ll benefit from hourly prices based on the EPEX spot price, as well as 100% certified green electricity.

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.

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.

Your Dynamic Tariff in 3 Easy Steps

Step 1

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

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

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.

Why Choose Ostrom?

We are different from other energy providers. How?

• Pay only what you consume each month
• 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

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.

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.

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.

Thousands of happy customers
Thousands of happy customers rate us highly for reliability, transparency, and a seamless experience.

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.

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.

100% green energy
With Ostrom, every kilowatt-hour is sourced from certified renewable sources. Reduce your carbon footprint while enjoying affordable, sustainable energy.