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!
✓ Get up to another 100 € for a connected smart device!
Ready to sign up? Calculate your tariff first!
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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.
SimplyFair Tariff
✓ 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
SimplyDynamic Tariff
✓ 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.
Test the app for free on Demo Mode — download 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, 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.
XPENG
G3
G3i
G6
G9
P5
P7
P7i
GMC
HUMMER EV
Chevrolet
Blazer EV
Bolt EUV
Bolt EV
Volt
Jeep
Lexus
Cadillac
Lyriq
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-C4X
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
Tesla
ChargePoint
PodPoint
Schneider Electric
Schneider Charge
EVlink Home Smart
Ohme
Home Pro
Enel X
JuiceBox
JuiceBox Plus
JuiceBox Pro
Charge Amps
Aura
Halo
EVBox
Elvi
Livo
GO-E
Gemini
Gemini Flex
HOME+
HOMEfix
Garo
EntityPro
EO
Mini Pro 2
Easee
Charge
Home
One
Zaptec
Go
Pro
ChargePoint
Wallbox
Commander
Commander 2
Copper
Copper Business
Pulsar
Pulsar MAX
PulsarPlus
Quasar
Bosch
Netatmo
Smart Modulating Thermostat
Smart Radiator Valve
Smart Thermostat
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
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Vaillant
sensoCOMFORT VRC 720/2
Viessmann
Vitocal 250-A
Vitocal 252-A
Vitocal 200-A
Daikin
ATXC-D
ATXTP-M
CTXS-K
FTXC-D
FTXF-E
FTXTA-BW
Fujitsu
ARXG09KLLAP
ARXG12KLLAP
ARXG14KLLAP
ARXG18KLLAP
ARXH22KMTAP
ARXH24KMTAP
ARXH30KMTAP
ARXH36KMTAP
ARXH45KMTAP
ARYG60LHTA
ASYG07KPCE
ASYG09KPCE
ASYG12KPCE
ASYG18KMTE
ASYG24KMTE
AUXG09KVLA
AUXG12KVLA
AUXG14KVLA
AUXG18KRLB
AUXG18KVLA
AUXG22KRLB
AUXG22KVLA
AUXG24KRLB
AUXG24KVLA
AUXG30KRLB
AUXG36KRLB
AUXG36KRLB
AUXG45KRLB
AUXG54KRLB
GW8500-MS-30
Nest
2nd gen Learning Thermostat
3rd gen Learning Thermostat
Thermostat
Thermostat E
NIBE
S735
S1155
S1155 PC
S1255
S1255 PC
S2125
Panasonic
CS-HZ25WKE
Toshiba
RAS-16PAVPG-E
RAS-16PKVPG-E
And more coming soon ...
SUNSYNK
SUN1000G3-EU-230
SUN1300G3-EU-230
SUN1600G3-EU-230
SUN1800G3-EU-230
SUN2000G3-EU-230
SUN300G3-EU-230
SUN500G3-EU-230
SUN600G3-EU-230
SUN800G3-EU-230
SUNSYNK-25K-SG01HP3-EU-BM2
SUNSYNK-30K-SG01HP3-EU-BM3
SUNSYNK-40K-SG01HP3-EU-BM4
SUNSYNK-50K-SG01HP3-EU-BM4
SUNSYNK-8K-SG01LP1
SYNK-10K-SG04LP3
SYNK-12K-SG04LP3
SYNK-16K-SG01LP1
SYNK-3.6K-SG01LP1
SYNK-3.6K-SG04LP1
SYNK-5K-SG03LP1
SYNK-5K-SG04LP1
SYNK-8K-SG04LP3
SYNK-8K-SG05LP1
SolArk
12K-2P-N
12K-3P-N
15K-2P-N
30K-208V
5K-1P-L
5K-1P-N
5K-2P-N
60K-480V
8K-1P-L
8K-2P-L
8K-2P-N
Solplanet
ASW0400/1250A-S
ASW0400/2500A-S
ASW05kH-T2
ASW05kH-T2-O
ASW0600/1250A-S
ASW0600/2500A-S
ASW06kH-T2
ASW06kH-T2-O
ASW0800/1250A-S
ASW0800/2500A-S
ASW08kH-T1
ASW08kH-T2
ASW08kH-T3
ASW08kH-T3-O
ASW10000-S
ASW1000/1250A-S
ASW1000/2500A-S
ASW1000-S-G2
ASW1000S-S
ASW100K-LT
ASW10kH-T1
ASW10kH-T2
ASW10kH-T2-O
ASW10kH-T3
ASW10kH-T3-O
ASW10K-LT-G2
ASW10K-LT-G2 Pro
ASW12kH-T1
ASW12kH-T2
ASW12kH-T3
ASW12kH-T3-O
ASW12K-LT-G2
ASW12K-LT-G2 Pro
ASW13K-LT-G2 Pro
ASW1500-S-G2
ASW1500S-S
ASW15K-LT-G2
ASW15K-LT-G2 Pro
ASW17K-LT-G2
ASW17K-LT-G2 Pro
ASW2000-S-G2
ASW2000S-S
ASW20K-LT-G2
ASW2500-S-G2
ASW25K-LT-G3
ASW27K-LT-G3
ASW3000H-S2
ASW3000-S-G2
ASW30K-LT-G2
ASW30K-LT-G3
ASW33K-LT-G2
ASW33K-LT-G3
ASW3680H-S2
ASW3680-S-G2
ASW36K-LT-G2
ASW36K-LT-G3
ASW3K-LT-G2 Pro
ASW4000H-S2
ASW4000-S-G2
ASW40K-LT-G2
ASW40K-LT-G2 Pro
ASW40K-LT-G3
ASW45K-LT-G2
ASW45K-LT-G2 Pro
ASW45K-LT-G3
ASW4K-LT-G2 Pro
ASW5000H-S2
ASW5000-S-G2
ASW50K-LT-G2
ASW50K-LT-G2 Pro
ASW50K-LT-G3
ASW5K-LT-G2 Pro
ASW6000H-S2
ASW6000-S
ASW6000-S-G2
ASW60K-LT-G3
ASW6K-LT-G2 Pro
ASW75K-LT
ASW8000-S
ASW80K-LT
ASW8K-LT-G2 Pro
FOXESS
F3000
F3600
F4600
F5000
F5300
F6000
H1-3.0-E
H1-3.7-E
H1-3.7-E-G2
H1-5.0-E
H1-5.0-E-G2
H1-6.0-E
H1-6.0-E-G2
H3-10.0-E
H3-12.0-E
KH7
Kuara 6.0-3-H
S2500-G2
T5-G3
T6-G3
APsystems
DS3
DS3D
QS1
QS1A
QT2
QT2D
YC1000
YC500
YC600
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 Metered
Envoy R Standard
Envoy S Metered
Envoy S Standard
IQ Gateway
IQ7+
IQ7A
IQ7PD-72
IQ7X
IQ8
IQ8+
IQ8A
IQ8AC
IQ8HC
IQ8M
IQ8MC
M215
M250
S230
S270
S280
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
GW4K-DT
GW5K-DT
GW6K-DT
GW8K-DT
GW10K-MS-30
GW10K-SDT-20
GW10KT-DT
GW12K-SDT-20
GW12KLV-MT
GW12KLV-SDT-20
GW12KT-DT
GW15K-SDT-20
GW15KLV-MT
GW15KT-DT
GW17K-SDT-20
GW17KT-DT
GW20K-SDT-20
GW20KLV-MT
GW20KT-DT
GW25K-MT
GW29.9K-MT
GW30K-MT
GW30KLS-MT
GW30KLV-MT
GW35KLS-MT
GW35KLV-MT
GW36K-MT
GW50KBF-MT
GW50KLV-MT
GW50KN-MT
GW50KS-MT
GW60KBF-MT
GW60KS-MT
GW70KHV-MT
GW73KLV-HT
GW75K-HT
GW75K-MT
GW75KBF-MT
GW80K-HT
GW80K-MT
GW80KBF-MT
GW80KHV-MT
GW100K-HT
GW110K-HT
GW120K-HT
GW700-XS
GW700-XS-11
GW1000-XS
GW1000-XS-11
GW1500-XS
GW1500-XS-11
GW1600-MIS
GW1800-MIS
GW2000-MIS
GW2000-XS
GW2000-XS-11
GW2500-XS
GW2500-XS-11
GW3000-DNS-30
GW3000-XS
GW3000-XS-11
GW3000D-NS
GW3000T-NS
GW3600-DNS-30
GW3600D-NS
GW3600T-NS
GW4000-SDT-20
GW4200-DNS-30
GW4200D-NS
GW4200T-NS
GW5000-DNS-30
GW5000-MS-30
GW5000-SDT-20
GW5000D-NS
GW5000T-NS
GW6000-DNS-30
GW6000-MS-30
GW6000-SDT-20
GW6000D-NS
GW6000T-NS
GW7000-MS-30
GW8000-SDT-20
GW8500-MS-30
Growatt
Growatt 2500MTL-S
Growatt 3000MTL-S
Growatt 3000TL3-S
Growatt 3600MTL-S
Growatt 4000TL3-S
Growatt 4200MTL-S
Growatt 5000MTL-S
Growatt 5000TL3-S
Growatt 5500MTL-S
Growatt 6000TL3-S
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)
X1-0.6-S-N(L)
X1-0.7-S-D(L)
X1-0.7-S-N(L)
X1-1.1-S-D(L)
X1-1.1-S-N(L)
X1-1.5-S-D(L)
X1-1.5-S-N(L)
X1-2.0-S-D(L)
X1-2.0-S-N(L)
X1-2.5K-S-D(L)
X1-2.5K-S-N(L)
X1-3.3K-S-D(L)
X1-3.3K-S-N(L)
X1-3.6K-S-D(L)
X1-3.6K-S-N(L)
X1-3K-S-D(L)
X1-3K-S-N(L)
X1-MINI-0.6K-G4
X1-MINI-0.6K-G4
X1-MINI-0.7K-G4
X1-MINI-0.7K-G4
X1-MINI-0.8K-G4
X1-MINI-1.1K-G4
X1-MINI-1.5K-G4
X1-MINI-2.0K-G4
X1-MINI-2.5K-G4
X1-MINI-3.0K-G4
X1-MINI-3.3K-G4
X1-MINI-3.7K-G4
X1-MINI-4.0K-G4
X3-MIC-3K-G2
X3-MIC-4K-G2
X3-MIC-5K-G2
X3-MIC-6K-G2
X3-MIC-8K-G2
X3-MIC-10K-G2
X3-MIC-12K-G2
X3-MIC-15K-G2
X3-PRO-8K-G2
X3-PRO-10K-G2
X3-PRO-12K-G2
X3-PRO-15K-G2
X3-PRO-17K-G2
X3-PRO-20K-G2
X3-PRO-25K-G2
X3-PRO-30K-G2
Solis
DLS-G GPRS Datalogger
DLS-L LAN
DLS-W WIFI
TSUN
TSOL-MP2250
TSOL-MP3000
TSOL-MS300
TSOL-MS350
TSOL-MS400
TSOL-MS600
TSOL-MS700
TSOL-MS800
TSOL-MS800
TSOL-MS1600
TSOL-MS1800
TSOL-MS2000
TSOL-MS3000
Sungrow
SG5.0RT
SG5KTL-D
SG5KTL-MT
SG6.0RT
SG6KTL-MT
SG8.0RS
SG8.0RT
SG9.0RS
SG10KTL-M
SG10RS
SG10RT
SG12KTL-M
SG12RT
SG15KTL-M
SG15RT
SG17RT
SG20KTL-M
SG20RT
SH5.0RT
SH5.0RT-V112
SH6.0RT
SH6.0RT-V112
SH8.0RT
SH8.0RT-20
SH8.0RT-V112
SH10RT
SH10RT-20
SH10RT-V112
Tesla
Powerwall Built-in Inverter
And more coming soon ...
Huawai
SMA
SolarEdge
Tesla
Powerwall
Enphase
IQ series
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!
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