Energy. Just Better.
Clean Electricity, Clean Price.

✓ Save up to 35% or 500 € on your energy bill annually
✓ Everything in English and German
✓ 100% green energy
✓ Available anywhere in Germany
✓ Get up to 50 € for every friend who signs up too!

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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.

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Flexible & Fair

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

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Clean & Green

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

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Easy & Digital

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

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Fair Energy for Everyone

Moving apartments? Just arrived in 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.

SimplyFair TariffSimplyDynamic Tariff

Our Generators are Genuinely Green

We only partner with reliable green electricity sources across Germany, so you'll always know exactly where your Ostrom power comes from. See for yourself!

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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!
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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.

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.

Audi
A3
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
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
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
i3 120
i3 94
i3s 94
i4 eDrive40
i4 M50
i7 60
i8
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
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
XE
XF
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
Gemini Flex
HOME+
HOMEfix
EO
Mini Pro 2
Easee
Charge
Home
One
Zaptec
Go
Pro
Wallbox
Commander
Commander 2
Copper
Copper Business
Pulsar
Pulsar MAX
PulsarPlus
Quasar
Adax
Adax
Ecobee
apolloSmart
athenaSmart
nikeSmart
Honeywell
Baily
Duo
Duo No Humidifier
Duo Wifi Trade
Manhattan UI2
Saratoga
Micro Matic
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.

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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.

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Seamless & Carefree

We manage the cancellation and handover process so you can stay lit at all times!

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Uninterrupted Service

We'll sort everything right away! Even after setup, we’re here to make sure everything works smoothly.

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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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