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Energy As It Should Have Always Been

We’ve made it our mission to provide green electricity for all. By leveraging tech, we keep things lean and simple, allowing us to focus on our customer’s needs and stay 100% green — without needing to markup our tariffs like other providers.

Flexible & Fair

We sell our energy at cost because we'd rather our customers consume less, instead of more.

Clean & Green

We sign with 100% renewable energy sources, meaning your power comes from the best places.

Easy & Digital

Read your meter, manage your payments, or chat with us live—all in one app. No letters, no fax!

Fair Energy for Everyone

Moving apartments? Leaving the country? We support you all the way. With our flexible variable tariff, you won’t be locked into confusing contracts or get stuck with high prices. Plus, smart meter users can take advantage of dynamic pricing with our SimplyDynamic tariff. Sign up within minutes, cancel anytime.

Our Tariffs

Our Generators are Genuinely Green

We only partner with reliable green energy sources across Germany. Explore our map to find out exactly where your Ostrom energy comes from!

Explore Generators

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.

Download the Ostrom app today!

Ostrom’s Smart Products

Browse our smart products for even better control over your energy consumption. From smart meter integration to electric vehicle charging, optimising 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.

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!

Order Now

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.

Audi

A3 Sportback e-tron

A3 Sportback TFSI e

A4 Avant

A4 Sedan

A5 Cabriolet

A5 Coupe

A5 Sportback

A6 Avant

A6 Avant TFSI e

A6 Limousine TFSI e

A6 Sedan

A7 Sportback

A7 Sportback TFSI e

A8 L TFSI e

A8 TFSI e

e-tron

e-tron GT

e-tron S

e-tron Sportback

Q3 Sportback

Q3 Sportback TFSI e

Q3 TFSI e

Q4 e-tron

Q4 Sportback e-tron

Q5 Sportback

Q5 TFSI e

Q7 e-tron

Q7 TFSI e

Q8 e-tron

Q8 TFSI e

RS6 Avant

RS e-tron GT

S6 Avant

BMW

225e

225xe

230e

320e

330e

530e

545e

740e

740Le

745e

745Le

i3 120

i3 94

i3s 94

i4 eDrive40

i4 M50

i7 60

iX1 30

iX3

iX3 M Sport

iX 40

iX 50

iX M60

iX xDrive40

iX xDrive50

X1 25e

X1 30e

X1 xDrive25e

X2 25e

X2 xDrive25e

X3 30e

X3 xDrive30e

X5 40e

X5 45e

X5 xDrive45e

Mercedes

111 KA/ L4X2 3200

112 KA/ E4X2 3430

129 VTP/E4X2 3430

129 VTP/L4X2 3200

300 EQV/E4X2 3430

300 EQV/L4X2 3200

312 KA 4X2 3924

A 250 e

AMG EQE 43

AMG EQE 53

AMG EQS 53

B 250 e

C 300 de

C 300 e

C 350 e

CLA 250 e

E 300 de

E 300 e

E 350 e

EQA 250

EQA 250+

EQA 300

EQA 350

EQB 250

EQB 300

EQB 350

EQC 400

EQE 300

EQE 350

EQE 350+

EQE 400

EQS 350

EQS 450

EQS 450+

EQS 580

EQV 300

GLA 250 e

GLC 300 de

GLC 300 e

GLC 350 e

GLE 350 e

GLE 500 e

S 580 e

Vito Panel Van

Volkswagen

Arteon

e-crafter

e-golf

e-up

Golf

ID.3

ID.4

ID.5

ID. Buzz

Passat

Tiguan

Touareg

Porsche

Cayenne E-Hybrid

Cayenne S E-Hybrid

Cayenne Turbo S E-Hybrid

Panamera 4 E-Hybrid

Panamera 4S E-Hybrid

Panamera S E-Hybrid

Panamera Turbo S E-Hybrid

Taycan

Taycan 4

Taycan 4S

Taycan GTS

Taycan Turbo

Taycan Turbo S

Tesla

Model 3

Model S

Model X

Model Y

Hyundai

IONIQ

IONIQ 5

IONIQ 6

KONA

SANTA FE

TUCSON

Toyota

bZ4X

Corolla HB/TS

Prius Plug-in

Proace City EV

Proace City Verso EV

Proace EV

Proace Verso EV

RAV4

RAV4 PHEV

Yaris

Yaris Cross

Citreon

BERLINGO (VAN)

C5 AIRCROSS

C5 X

Ë-BERLINGO

Ë-C4

Ë-Jumpy

Ë-SPACETOURER

Cupra

Born

Formentor

Leon

Mii

DS 3

DS 3 CROSSBACK E-TENSE

DS 4

DS 4 E-TENSE

DS 7

DS 7 CROSSBACK E-TENSE 4x4

DS 9

Fiat

500BEV

Ford

Explorer

F-150

Focus Electric

Fusion Hybrid

Kuga

Kuga Vignale

Mustang Mach-E

Tourneo Custom

Transit

Transit Custom

Jaguar

E-PACE

F-PACE

F-TYPE

I-PACE

Kia

CEED

E-NIRO

E-SOUL

EV6

NIRO

SORENTO

Soul

SPORTAGE

XCeed

Landrover

Defender

Discovery

Range Rover

Mini

Cooper SE

Cooper SE ALL4

Countryman Hybrid

Nissan

Ariya

E-NV200

Leaf

Opel

Astra

Combo-e LIFE

COMBUSES VAN L2

COMBUSES VAN L3

Corsa-e

Grandland X

Mokka-e

PANEL VAN L1

Vivaro

Zafira Life 20

Peugeot

3008

308 SW

508

e-2008

e-208

e-208 GT

EXPERT

PARTNER

TRAVELLER

Renault

CAPTUR II

KANGOO 3 VAN

KANGOO II

MASTER III

MEGANE E-TECH

MEGANE IV

MEGANE IV BREAK

TWINGO III

TWIZY

ZOE

Rivian

R1S

R1T

Seat

Formentor

Leon

Mii

Tarraco

Skoda

CITIGOe iV

Enyaq 50 iV

Enyaq 60 iV

Enyaq 80 iV

Enyaq 80X iV

Enyaq Coupé RS iV

OCTAVIA iV

SUPERB iV

Vauxhall

Combo-e LIFE

Corsa-e

Grandland X

Mokka-e

Vivaro Life

Volvo

C40 Recharge

S60

S60 Recharge

S90

V60

V60 Recharge

V90

V90 Recharge

XC40

XC40 Recharge

XC60

XC60 Recharge

XC90

XC90 Recharge

Charge Amps

Aura

HALO

EVBox

Elvi

GO-E

Gemini

Mini Pro 2

Easee

Charge

Home

One

Zaptec

Pro

Wallbox

Commander

Commander 2

Copper

Copper Business

Pulsar

Pulsar MAX

PulsarPlus

Quasar

Adax

Ecobee

apolloSmart

athenaSmart

nikeSmart

Honeywell

Baily

Duo

Duo No Humidifier

Duo Wifi Trade

Manhattan UI2

Saratoga

Micro Matic

Mill

Conv Gen 2

Conv Gen 3

Mill

Oil Gen 3

Panel Gen 1

Panel Gen 2

Panel Gen 3

Socket Gen 2

Socket Gen 3

Mitsubishi

Kaiteki 6300

MAC-557 (Wi-Fi Interface)

MAC-558 (Wi-Fi Interface)

MAC-559 (Wi-Fi Interface)

MAC-567 (Wi-Fi Interface)

MAC-568 (Wi-Fi Interface)

MAC-578 (Wi-Fi Interface)

MSZ-AP22-80VGK

MSZ-EF22-50VGK

MSZ-LN22-60VG2

Resideo

FlyCatcher

Jasper

Sensibo

airq

Tado

Smart AC Control

Smart Radiator Thermostat

Smart Thermostat

Vaillant

sensoCOMFORT VRC 720/2

Viessmann

Vitocal 250-A

Vitocal 252-A

Vitocal 200-A

And more coming soon ...

CSISolar

CSI-3K-S22002-ED

CSI-5K-S22002-ED

CSI-5K-T400GL01-E

CSI-6K-T400GL01-E

CSI-7K-S22002-ED

CSI-8K-S22002-ED

CSI-8K-T400GL01-E

CSI-9K-S22002-ED

CSI-10K-T400GL01-E

CSI-12K-T400GL01-E

CSI-15K-T400GL01-E

CSI-17K-T400GL01-E

CSI-20K-T400GL01-E

Deye

SUN-1K-G04P1-EU-AM1

Enphase

Envoy-R

Envoy-S

IQ Envoy

Fronius

Primo 3.0-1

Primo 3.6-1

Primo 4.0-1

Primo 4.6-1

Primo 5.0-1

Primo 6.0-1

Primo 8.2-1

Symo 3.0-3-M

Symo 3.7-3-M

Symo 4.5-3-M

Symo 5.0-3-M

Symo 6.0-3-M

Symo 7.0-3-M

Symo 8.2-3-M

Symo 10.0-3-M

Symo 12.5-3-M

Symo 15.0-3-M

Symo 17.5-3-M

Symo 20.0-3-M

Symo GEN24 3.0 Plus

Symo GEN24 4.0 Plus

Symo GEN24 5.0 Plus

Symo GEN24 6.0 Plus

Symo GEN24 8.0 Plus

Symo GEN24 10.0 Plus

Goodwe

GW10K-ET

GW3000D-NS

Growatt

MID 8KTL3-XL

MID 15KTL3-XL

MID 17KTL3-X

MOD 10KTL3-X

MOD 8000TL3-X

MOD 9000TL3-X

Hoymiles

HM-300

HM-350

HM-400

HM-600

HM-700

HM-800

HM-1200

HM-1500

HMS-300

HMS-350

HMS-400

HMS-450

HMS-500

HMS-600

HMS-700

HMS-800

HMS-900

HMS-1000

HMS-1600

HMS-1800

HMS-2000

Huawei

SUN2000-2KTL-L1

SUN2000-3.68KTL-L1

SUN2000-3KTL-L1

SUN2000-3KTL-M1

SUN2000-4.6KTL-L1

SUN2000-4KTL-L1

SUN2000-4KTL-M1

SUN2000-5KTL-L1

SUN2000-5KTL-M1

SUN2000-6KTL-L1

SUN2000-6KTL-M1

SUN2000-8KTL-M0

SUN2000-8KTL-M1

SUN2000-10KTL-M0

SUN2000-10KTL-M1

SUN2000-12KTL-M0

SUN2000-12KTL-M1

SUN2000-12KTL-M2

SUN2000-15KTL-M0

SUN2000-15KTL-M2

SUN2000-17KTL-M0

SUN2000-17KTL-M2

SUN2000-20KTL-M0

SUN2000-20KTL-M2

SUN2000-20KTL-M3

SUN2000-29.9KTL-M3

SUN2000-30KTL-M3

SUN2000-36KTL-M3

SUN2000-40KTL-M3

INVT

XG15KTR

XG17KTR

XG20KTR

XG22KTR

XG25KTR-2M

SMA

Sunny Boy 1.5-2.5

Sunny Boy 3.0-6.0

Sunny Boy 3.0-US–7.7-US

Sunny Boy Storage 3.7–6.0

Sunny Highpower PEAK3

Sunny Tripower 3.0–6.0

Sunny Tripower 8.0-10.0

Sunny Tripower 15000TL–25000TL

Sunny Tripower CORE1

Sunny Tripower CORE2

Sunny Tripower Smart Energy

Sunny Tripower X

SOFAR

HYD 5KTL-3PH

HYD 6KTL-3PH

HYD 8KTL-3PH

HYD 10KTL-3PH-A

HYD 15KTL-3PH

HYD 20KTL-3PH

HYD 3000-EP

HYD 3680-EP

HYD 4000-EP

HYD 5000-EP

HYD 5500-EP

HYD 6000-EP

ME 5KTL-3PH

ME 6KTL-3PH

ME 8KTL-3PH

ME 10KTL-3PH

ME 15KTL-3PH

ME 20KTL-3PH

ME 3000SP

SOFAR 3.3KTLX-G3

SOFAR 4.4KTLX-G3

SOFAR 5.5KTLX-G3

SOFAR 6.6KTLX-G3

SOFAR 8.8KTLX-G3

SOFAR 10KTLX-G3-A

SOFAR 11KTLX-G3

SOFAR 12KTLX-G3

SOFAR 15KTLX-G3

SOFAR 17KTLX-G3

SOFAR 20KTLX-G3

SOFAR 22KTLX-G3

SOFAR 24KTLX-G3

SOFAR 1100TL-G3

SOFAR 1600TL-G3

SOFAR 2200TL-G3

SOFAR 2700TL-G3

SOFAR 3000TL-G3

SOFAR 3300TL-G3

SolarEdge

RSE27.6K

SE4K

SE5K

SE7K

SE8K

SE9K

SE10K

SE17K

SE25K

SE27.6K

SE30K

SE2200H

SE3000H

SE3500H

SE3680H

SE4000

SE4000H

SE5000H

SE6000H

SE8250H

SE10000H

SE11400H

SolarEdge

Solax

X1-0.6-S-D(L)

Solis

DLS-G GPRS Datalogger

DLS-L LAN

DLS-W WIFI

TSUN

TSOL-MP3000

Sungrown

SG8.0RS

SG9.0RS

SG10KTL-M

SG10RS

SG10RT

Tesla

Powerwall Built-in Inverter

And more coming soon ...

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.

Learn More

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 let your old provider know you’ve seen the light.

Green Energy Made Easy

Switch and save in only 5 minutes!

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Energy. Just Better. Clean Electricity, Clean Price.