Energy. Just Better.
Green Electricity in English
✓ All-English website, app, support
✓ Zero lock-ins, cancel anytime
✓ Switch seamlessly; we handle your old provider
✓ Tens of thousands already trust Ostrom across Germany
✓ Get up to 100 € for every referral!
Look Who's Talking About Us
Energy As It Should Have Always Been
We make green electricity simple and affordable for everyone. Get electricity at cost with no hidden markups. Track your usage, submit meter readings, charge your EV, chat with our English support, and much more — all in the Ostrom App!
Transparent & Flexible
You are only ever charged whatever you consume. All tariffs are risk-free, monthly cancellable.
Helpful Hands
No more asking a friend to translate to English. Our customer team is just one tap away!
Digital Dream
We're probably the only provider in Germany to never send you mail. Everything's on our app!
Our Electricity Tariffs
With our SimplyFair variable rate, you're not bound to a confusing contract and won't be stuck with high prices. Smart meter users can also benefit from our dynamic pricing with our SimplyDynamic plan. You can sign up within minutes and cancel anytime.
✓ See consumption monthly
✓ Easily add meter readings
✓ No smart meter needed
✓ For most of our customers
✓ Risk-free, monthly cancellable
✓ Works with the Ostrom Price Cap, never pay above 35 ct/kWh
✓ See consumption hourly
✓ No meter readings required
✓ Works with a smart meter
✓ Usually for >6,000 kWh
✓ Risk-free, monthly cancellable
✓ Optimize your EV or heat pump to the cheapest hours of the day
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)
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.
Ostrom’s Smart Products
Browse our smart products for even better control over your energy consumption. From smart meter integration to electric vehicle charging, optimizing your consumption with Ostrom will benefit both the environment and your wallet!
Dynamic Pricing
Take control of your energy costs! Our Dynamic Pricing lets you compare your consumption to the hourly market prices so you can use more when it costs less, and vice versa.
Smart HVAC
Discover Ostrom's smart heating and cooling solutions. Take control with our user-friendly Ostrom App, saving energy and enjoying a comfortable home all year round.
Smart EV Charging
Need your electric vehicle ready to go when you are? Just plug in and relax! With optimized charging, you can rely on the Ostrom app to charge your car during the cheapest hours.
Ostrom Store
Get everything you need for your smart home! From intelligent assistant speakers and electric vehicle chargers to smart thermostats and much more. Find it all on the Ostrom Store!
Control 400+ Devices With Ostrom
We integrate with dozens of partner brands and hundreds of devices from various electric vehicles, EV chargers, heat pumps and smart home appliances. Control them all through the Ostrom app, your home energy management platform.
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.
Proud to Be a B Corp™
Ostrom is now a Certified B Corporation meaning we are part of a global community working to make high social and environmental impact. This strengthens our commitment to creating a better workplace, community and environment.
Breakups Are Never Easy… Oh Wait, With Ostrom They Are!
Lean back and enjoy: When switching to us, we handle all the details with your old provider.
Seamless & Carefree
We manage the cancellation and handover process so you can stay lit at all times!
Uninterrupted Service
We'll sort everything right away! Even after setup, we’re here to make sure everything works smoothly.
We Deal With Your Ex
Let Ostrom do it for you: We'll let your old provider know you’ve seen the light.
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.
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!) - #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).
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.
Green Energy Made Easy
Switch and save in only 5 minutes!