Save Up to 35% with Our Dynamic Pricing Tariff & Smart Meter

Start to control your electricity costs! We offer a dynamic tariff, so you can track your energy consumption on an hourly basis and get billed at the current hourly rate. You could save up to 500 € annually with a risk-free monthly cancellable plan!

Dynamic & Transparent

The electricity price on the wholesale energy market varies hourly. We always pass on the wholesale electricity price plus taxes and levies directly to you.

Smart & Intuitive

In times of heavy winds, sunshine, or at night, electricity is cheaper. We at Ostrom enable you to take advantage of this and consume electricity at the cheapest time.

Easy & Digital

Your electricity consumption, bills, and energy-management tools are all in one place. Keep track in the Ostrom app and get the most out of your smart meter.

How To Get Our Dynamic Tariff

1. Sign Up To Ostrom
Sign up for our SimplyFair Tariff on our website.
2. Grid Confirmation
As soon as your contract is confirmed, the grid operator will inform us if you have a smart meter and therefore are eligible for our dynamic tariff. If you do not have a smart meter, you can order your smart meter after your contract confirmation here.
3. Order Consumption Data
If we do not automatically receive your consumption data daily we will request it from the grid operator. This can take up to 8 weeks.
4. Switch To Our Dynamic Tariff
Once we receive your consumption data, we will automatically switch you to our dynamic tariff. Let the savings begin!
5. Enjoy the Benefits
Reduce your energy costs by using electricity at the cheapest times. Monitor your consumption on an hourly basis and shift it to periods with more renewable energy. Automate devices and take advantage of flexible, variable electricity prices.

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)

Dynamische Stromtarife im Vergleich, 15.08.24 (Link)

Our Promise:
Transparent & Dynamic

We want to help reduce your energy consumption. Thanks to our dynamic tariff in combination with your smart meter, you will be able to monitor your energy consumption on an hourly basis.

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!
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You don’t have a smart meter?

Buy Your Smart Meter

Digitizing The Energy Market

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!

All in One Place

Access your annual invoices, submit and track your meter readings, and adapt your monthly payments all within the Ostrom app.

On-Demand Support

With our live customer support chat, get answers to your questions within seconds — not hours or days!

English? German?
You Choose!

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.

Test the app for free on Demo Mode — download today!

Smart Meter Requirements

We support different kinds of smart meters such as official smart meters you received through your local grid as well as private suppliers like with our partner Lackmann.

What Is A Smart Meter and Do I Have One?

If you are not sure whether you have a smart meter or not, we can also assist you in our live support chat to check your eligibility.

Learn More

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.

The 5 Most Frequently Asked Questions

#1 Why should I switch 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...
#2 I still have my contract period with my old provider. Do I have to wait? (Not at all!)
No, there’s no need to wait! Even if your current contract has up to 12 months remaining, you can sign up with Ostrom today. Just sign up now, and we’ll take care of the rest — your contract will seamlessly switch to Ostrom as soon as your existing one ends.
#3 What is the difference between the SimplyFair and SimplyDynamic tariffs?
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. Our last price increase was in 2022, and we did 7 price decreases (yes!) since then.
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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!
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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!)
#4 I'm worried about price changes. How often do prices change at Ostrom?
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 2024 still paying 2022 prices).
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Our last price increase was in 2022, and afterwards we did 7 price decreases then. This means our customers quickly received cheaper prices as soon as they came. How awesome is that!
#5 Does Ostrom offer risk-free, flexible, monthly cancellable contracts?
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.