Ostrom Energy - Smart & Green

2.7K reviews
Content rating
Everyone
100K+
Downloads
Content rating
Everyone
Learn more
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About this app

Save up to 35% or up to 500 € on your energy bill annually! Ostrom is a smart green energy provider with a flexible monthly subscription that can be canceled anytime. Access our app in English or German!

As part of the Ostrom family, you gain full access to the Ostrom app, your one-stop solution to track your energy consumption, payments, CO₂ emissions saved, and more.

YOUR POWER USAGE

Use our app to understand your electricity usage compared to your monthly payments. Keep it updated by regularly adding your meter readings.

SMART METER & DYNAMIC TARIFF

Do you have a smart meter? We enable you to easily track your energy consumption hourly and get billed at the current hourly rate.

BILLING MANAGEMENT

Experienced a surge in power usage this month? Fine-tune your monthly deposit directly within the app, steering clear of any end-of-year additional charges. Browse through all your invoices, payments, and customize your payment method – all under one roof.

FRIENDLY SUPPORT

Our dedicated team is at your service in the chat. Connect with us through the app for exceptional customer service with lightning-fast response times.

CONNECT SMART DEVICES

Connect your Heating, Ventilation, or Air Conditioning (HVAC) to the Ostrom app to easily schedule & adjust your temperature and mode.

CHARGE YOUR EV EFFICIENTLY

Charge your electric vehicle during the cheapest, greenest hours with full transparency. Set the time you need your EV ready, and it will charge when prices are best.

OUR VIRTUAL POWER PLANT NEOGRID

Save not only on charging your EV with our "Smart Charging" feature – become part of our Virtual Power Plant (VPP) named NeoGrid and get paid for charging! By optimizing the purchase and sale of electricity, the Virtual Power Plant provides the electricity grid with flexibility and thus generates additional income - which we will pay out to all participants.

REFERRAL PROGRAM

Get your exclusive referral code, share it with your friends, and watch your referral bonuses grow. For each successful referral, you get 50 € credited to your invoice or 100 € credit to use in the Ostrom Store — your choice!

SHOP IN THE OSTROM STORE

The Ostrom Store has smart home devices, heating, e-mobility & more! Get a discount on products with the referral credit in your Wallet.

ENJOY PARTNER PERKS

As our valued customer, you can enjoy perks and benefits from our partner companies.

DISCOVER SOLAR PV PARTNERS

Ostrom partners with reputable solar photovoltaic providers to help bring the power of the sun to your home.

GREEN FOOTPRINT

Witness your positive environmental impact resulting from the switch to sustainable energy, and observe it magnify as you bring more individuals on board the Ostrom journey.

JOIN US NOW

Not a member of the Ostrom community yet? No worries! Sign-up takes just 5 minutes, and we'll manage all the administrative tasks, including notifying your previous provider.

Get smart and make the green switch today with Ostrom!

Disclaimer:
Our app is only available for smartphones, as we focus on optimizing the experience for the most commonly used devices. This allows us to dedicate resources to innovative features and improvements for our users.
Electricity: Digital & Fair at Cost Price. All in English. Cancel any time.
Updated on
Oct 27, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Personal info, Messages, and App activity
  • This app may collect these data types
    Personal info, Messages and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

2.67K reviews
Mel
January 10, 2024
Now I'm getting an invoice being charged almost €300 for services offered the entire year. I'm sorry, but why! Was a given a monthly bill based on my consumption, even got my bill reduced many times! And now they're telling me I owe them when I paid every single month the exact amount that was due!? You guys are trying to steal money from people!! What a horrible, horrible company. I would NEVER recommend it to anybody.
7 people found this review helpful
Did you find this helpful?
Ostrom GmbH
January 10, 2024
Thank you for your feedback. We sent an email explaining that prepayments were based on your consumption indications. Our app always had a tool to align prepayments with usage. For assistance, please check your email or contact our support team. We appreciate your understanding.
Ahmed Ali
June 30, 2026
I don't understand the negative reviews. I have been with Ostrom for 3 months now and they are very helpful when it come to customer service. The registration was a very easy process. my only problem what it took them almost a month to provide me electricity, but other than this, it is all good.
2 people found this review helpful
Did you find this helpful?
Ostrom GmbH
July 8, 2026
Hey Ahmed, thank you so much for the review and your feedback! Best Your Ostrom-Team.
Serveto Pecin
October 4, 2026
After the update, I can no longer start the app. It wants to update, but when I tap the button, I can only open it, no update. it's a bug, a neverending loop...
Did you find this helpful?
Ostrom GmbH
October 5, 2026
Hey Serveto, thanks for the review and please excuse the trouble with the app yesterday! Everything should work as expected now. Let us know if there is anything else we can do for you Best Your Ostrom Team

What’s new

- Under Contract, you can see the withdrawal button.
- During sign-up, you can enter a yearly usage up to 99.999 kWh.
- The button to redeem your bonus stays hidden while your contract is not active yet and when your contract has expired and the final invoice has already been created.
- The price graph shows an electricity price of 0 correctly. The independent meter help opens again when you add a solar inverter. On Android, the meter reading field stays visible above the keyboard.