You are welcome to recommend Ostrom to as many friends and acquaintances as you like. Please note that the referral program is only for your friends and acquaintances. Please do not share your code on the web. We reserve the right to limit the use of your code in such cases.
Once you sign up to Ostrom you will receive an email with your unique code to share with your friends and family. If for some reason you cannot find your code anymore, simply come visit our live chat and and we will help you out.
Invite friends and family with your referral code to Ostrom and both of you’ll get a 35€ bonus. Once your contract and the contract of the referred person are confirmed, we will pay out bonus immediatley (if you signed up with SEPA) or you get the money accredited in the half-year or final bill.
Ostrom is a green energy provider, based in Berlin but serving the whole of Germany. We aim to make energy better, without the headaches caused by traditional German energy providers.
Ostrom is bringing transparency to the electricity industry with flexible monthly contracts, a completely digital experience from start to finish, everything in German and English, and an app that gives you complete control over your payments.
We sell electricity at cost price which means that, unlike other electricity providers, we don’t earn any more when your consumption increases. We do things this way because we want to encourage our customers to reduce their energy, use while helping Germany transition to 100% green energy.
At the moment we are only focused on electricity, but we are planning to add gas soon! Stay tuned.
Yes! We also serve businesses that use up to 6,000 kWh per year.
We only support electricity meters for so-called household electricity profiles at the moment. We, as a young startup, cannot support tariffs for households with electric heating with HT/NT meters as well as heat pump electricity, yet. HT/NT meters measure the electricity consumption for two different periods - day and night. Some energy suppliers have special energy contracts for this case. Usually, you can get the electricity at a cheaper rate at night. We are working on a solution to implement other tariffs in the future.
Making the switch is super easy. All you need to do is sign up on our website with your address & kWh consumption, and our team will do the rest! We’ll contact your current provider and your network operator, and we’ll make sure your lights stay on the whole time.
You can sit back and relax because we'll deal with all the canceling and switching admin for you. In some situations, like if your old provider has raised their prices, you can also cancel your contract with a Sonderkündigungsrecht (Special Right of Termination). If you think you may be eligible, or want to know more, you speak to us using the live chat function!
If your electricity provider announces a price increase, you have Sonderkündigungsrecht (a special right of termination). This is applicable as soon as your supplier has announced the planned increase in writing, where they should also tell you how long you have the right to terminate. In most cases this is two weeks, but be sure to check. The exact conditions and deadlines can be found in the general terms and conditions of your contract. We're telling you this because if you have a special right of termination and would like to switch to Ostrom, unfortunately we can't do it for you as we would with a regular contract switch. You must terminate the contract yourself by sending your cancellation in writing to your supplier by email, fax (hah), or post. If you want to know more, feel free to talk to us in the live chat!
We will ensure your lights stay on throughout the switch! We plan the exact date of change with your ex-provider, and if for some reason this doesn't align, the Grundversorgung (basic supply) will always be there as a backup.
Ostrom will start the switching process as soon as you sign up, but your formal start date will depend on your previous provider's minimum contract period. This could mean that your switch might not happen for a while, but don't worry! We'll sort everything else out now so you don't even have to think about it when the contract with your previous provider is finally up.
Your Zählernummer (meter number/meter ID) can be found on your electricity bill, probably written at the top. Alternatively, you'll find the meter ID on your physical electricity meter. The meter is usually in your home by the front door, in the hallway, or in the basement. If you live in an apartment and can't find it, it's best to ask your Hausverwaltung (landlord or building manager) for details.
The Marktlokations-ID indicates the location of your meter within the German grid system. You'll find it on your most recent electricity bill.
As Ostrom is available throughout Germany, we are happy to continue providing energy at your new address. There is a chance that the charge for using the electricity network at your new location might be slightly different. If you'd like to know more, you can write to us at firstname.lastname@example.org or message us in the chat.
With the year-end billing or with the end billing at the end of your contract, we will compare the used and paid for electricity. If you consumed more than expected, we will charge the difference and if you used less, we will refund the difference. If you want an interim bill, the amounts can already be balanced here.
Our tariff consists of the cost price per kWh, the compulsory grid fee that every electricity consumer in Germany must pay, and a flat service and administration fee. Traditional providers often add their service and administration fee as part of the unit price, which means the more you use, the more they make. However, we want our customers to use less energy, not more, so we’ve made this a flat monthly fee—just enough to pay our bills too.
We estimate your electricity consumption based on the size of your household, in combination with your address we calculate how much you'll be charged monthly. Any deviations will be balanced out at the end of the year, or at the end of your contract—whichever comes first. If you think you're paying too much or too little, you can adjust the amount you pay monthly using the Ostrom app. On top of this, there is a flat monthly fee and environmental levies that add up to 6€. For more detailed information about these charges, please refer to our terms and conditions.
We offer renewable electricity at cost, without any markup, so when you consider that we're already cheaper than most providers. While other providers may look cheaper on price comparison sites, that's usually just because of a Neukund*innenbonus (new client bonus). If you read the fine print, you'll probably find that the monthly price goes up after a certain period, by which time you are already locked in. But not with Ostrom!
Ostrom always provides electricity at cost price. We found that often our competitors who offer such bonuses often lock you into long contracts so they can hike up the price later to make up for it, and we don't want to do that to you! The only 'bonus' we offer is through our referral programme—sign up to Ostrom, share your referral code with your friends, and when they sign up you'll both get 35€!
The Ostrom tariff does not have a price guarantee because we offer electricity prices at cost without any markup. Therefore, we do not profit from additional energy consumption. With our flexible tariff, we are able to pass on price decreases as fast as possible as we don't lock you in at a higher price.
We currently have two payment options—if you give us a SEPA direct debit mandate when you sign up, we can deduct the charge monthly from your account automatically. Alternatively, you can transfer the charge manually to our bank account each month. Ostrom aims to make green energy more accessible, so if you would like to use a different payment method (IBAN SEPA Mandate, Direct Debit, Credit Card, Paypal, Apple Pay, Klarna, etc.) please let us know in the chat!
Because we offer flexible monthly contracts, you will always pay at the beginning of the following month (e.g. the charge for May is due the first banking day of June).
In Germany, you're billed monthly based on the amount you set when you signed up to your energy provider. After 12 months, or when you cancel, you will receive a PDF invoice detailing your actual consumption. At this time we'll also debit or credit you, depending on your consumption.
Your Abschlag is the amount you pay monthly, based on your forecasted electricity consumption. After 12 months, or when your contract is canceled, your forecasted consumption is compared with your actual consumption. If you've used less power than forecasted, then you'll receive a refund. However, if you've used more than predicted you will receive a bill for the outstanding amount. As an Ostrom customer, you can track your usage and adjust your monthly payments through the Ostrom app. Head to the App Store or Google Play to download it today!
You can easily change the amount you pay and your payment method in the app, in the "Payment" section.
The minimum contract period is 11 days, which is the shortest possible length regulated by law. Unlike other providers, we offer a highly flexible monthly contract and will never charge you any early exit fees.
Everything's all set on your end! We'll take over from here, including contacting your previous provider to cancel your contract with them. Once we've determined the earliest date we can cancel your contract, we'll begin the switch-over process.
While we'd be sad to see you go, we've aimed to also make this process as simple as possible. Simply inform us by emailing email@example.com with your email, customer ID and order ID, or ask us in the chat!
Simply open the app, tap the settings icon top right, and edit your details there. Please note that it may take a couple of weeks for the changes to be processed.
You can change your password in the app by clicking "Forgot password?" on the login page.
When you do a meter reading, you are finding out how much electricity you've used by calculating the difference between the last meter reading and the current one. For example, on January 1 your meter says 1234 kWh. On February 1 it says 1345 kWh. This means your consumption for the month of January was 111 kWh. To get a reading, all you need to do is locate your meter and read the numbers on the counter indicating the kilowatt-hours, and submit it to us via the app or email.
The fastest way to do this is through the app. Open the app, go to the "Add Reading" section, input the numbers on your meter, and submit. It's that easy! Alternatively, you can send your meter reading via email to firstname.lastname@example.org.
If you have made an error in your meter reading, just send a short e-mail to email@example.com or better yet, talk to us in the chat and we'll correct it for you.
The meter is usually in your home by the front door, in the hallway, or the basement. If you live in an apartment and can't find it, it's best to ask your landlord or your Hausverwaltung (building manager) for details.
Nope, just let us know the Zählernummer (meter number) of your current meter and we'll take care of the rest.
Meters rarely break, but if you do suspect a defect please email us at firstname.lastname@example.org.
We currently do not support smart meters, but we hope to do so in the near future!
You can download the Ostrom app from the App Store for iOS devices or the Google Play Store for Android devices.
The Ostrom app brings transparency to your electricity consumption. Keep track of your meter readings, change your monthly payments accordingly, and access your yearly invoices all in one place. Download the app from the App Store for iOS devices or the Google Play Store for Android devices. We are always trying to improve the app so if you have any ideas or features in mind, don't hesitate to let us know!
You can simply log in with your e-mail address and your password within the App. There you will find your personal information.
As of 2021, Germany's electricity mix is still only around 50% renewable, and because of this the electricity that comes out of your wall sockets is labeled “grey”. This means that you will always receive a mixture of fossil fuel and green electricity from the grid—but this is exactly why switching to Ostrom makes a big impact. By doing so, you’re ensuring that the exact amount of energy you use is being fed back into the grid from renewable sources, and the money you pay for that energy goes towards building more renewable energy plants, rather than being invested in more fossil fuels.
Keeping your data safe is very important to us. All information regarding data privacy can be found at https://www.ostrom.de/privacy-policy.
All current information can be found under https://ostrom.de/en/privacy-policy/.
Please send a short e-mail to email@example.com and we will get in touch with you.
It only takes 5 minutes to switch and save with Ostrom!