1 module 10 kWh
Flats and small houses: lights, kitchen and the evening.
€6,900 installed
Home energy storage · Berlin
Store the sun. Spend it at night.
Nocturne One is a 10 kWh home battery that fills from your roof by day and runs the house after dark. Stack up to three. Installed in an afternoon.
- 06:40 · Morning
The roof wakes up before you do
Every kilowatt-hour your panels make and your house does not use goes into Nocturne instead of the grid. No settings, no app to open.
- 13:10 · Midday
Full by early afternoon
A 10 kWh module fills from a 6 kWp roof in a normal summer morning. Whatever comes after that is exported — or charges the car.
- 19:30 · Evening
Dinner runs on the morning
Oven, dishwasher, lights, the laptop: Nocturne supplies up to 5 kW continuously, from the wall, without a sound.
- 02:00 · Night
Stored sun until sunrise
The house runs through the night on what the roof made yesterday. At dawn the cycle starts again — six thousand times over the warranty.
The unit
Full specification
Nocturne One, in one, two or three
One module covers an evening. Two cover a household. Three cover a household with a car in the drive. Prices include installation and grid registration.
2 modules 20 kWh
A family house with a heat pump: through the night, most nights.
€12,400 installed3 modules 30 kWh
House, heat pump and an EV charged at home.
€17,900 installed
Sizing
How much Nocturne does your house need?
Four questions. The estimate uses average German household data; the site survey replaces it with your meter readings.
Our suggestion
2 × Nocturne One
20 kWh
- Your evenings and nights use about
- 12 kWh
- Nights covered from stored sun
- ≈ 90 %
- Installed price
- €12,400
Estimate only. A heat pump in January will use more; a July evening less.
Reserve this configurationQuestions before you reserve
Do I need solar panels?
No, but it is the point. Without a roof the unit charges on a night tariff and shifts your daytime consumption, which pays off on a two-rate contract. With a roof it stores what you would otherwise sell for a few cents.
What happens in a power cut?
Nocturne One switches to island mode within 20 milliseconds — fast enough that the router does not notice. A single module runs a house’s essentials for a night; three run the whole house.
How long does installation take?
Four hours for one module, five for three. The unit hangs on an inside or garage wall, the installer connects it behind the meter and registers it with the grid operator the same day.
What does the warranty cover?
Fifteen years or 6,000 full cycles, whichever comes first, with at least 80 % of the original capacity guaranteed. Cells are lithium iron phosphate — no cobalt, no thermal runaway.
Can I add a module later?
Yes, at any time in the first ten years. A second or third module bolts onto the first and shares its inverter, which is why the price per module drops.
Reservation
Reserve a unit for the spring installation window
No payment now. We book a site survey, confirm the price, and only then ask for a deposit.
- Survey within two weeks
- Price fixed after the survey
- Cancel any time before installation