Energy storage
store energy when it is cheap, use it when it counts
Batteries turn a small grid connection into a strong one, solar into evening power and price swings into savings. Fixed on your site, or mobile on a truck, with one energy management system above all of it.
- to 5 MWh per fixed system
- 107 kWh
- to 5 MWh per fixed system
- largest mobile container
- 2.6 MWh
- largest mobile container
- with capacity as a service
- No capex
- with capacity as a service
C&I cabinets
107 to 241 kWh
20 ft containers
1.3 to 5 MWh
Fixed · WattsFuture BESS
Battery storage on your site, 107 kWh to 5 MWh
C&I cabinets
107 to 241 kWh
20 ft containers
1.3 to 5 MWh
Cabinets for car parks, offices and shops; 20 ft containers for industry, logistics and solar sites, combined into multi-MWh plants. Engineered with the grid connection, protection and the grid-code file, and run by one EMS.
- Peak shaving: lower power-based grid fees
- More charging power on the same connection
- Solar self-consumption, backup and trading, FCR and aFRR
Mobile · WattsMobi
Power where the grid is not, 220 kWh to 2.6 MWh
WattsMobi
220 kWh to 2.6 MWh
A battery, a DC charger and power outlets in one container, moved by truck. Rented for a weekend or for two years: building sites, events, emergency services, fleet pilots, or the months until a grid upgrade.
- Up to 500 kW of DC charging on board
- Up to 600 kW of AC outlets, Powerlock 500 A
- Short- or long-term rental, or buy
Where storage fits
Fixed or mobile, by site
| Site | Problem | Storage | Format |
|---|---|---|---|
| Industrial site | Peaks set the grid fees; the connection is full | Peak shaving, load shifting, backup | Fixed, 20 ft containers |
| Truck and van depot | Megawatt charging on a modest connection | Battery in front of the DC chargers | Fixed, cabinets or containers |
| Solar site or roof | Midday surplus exported cheaply | Store solar for the evening and night | Fixed, cabinets |
| Office or car park | More chargers than the connection allows | Charging boost and peak shaving | Fixed, cabinets |
| Building site or event | No grid, or a diesel generator | Silent power and EV charging | Mobile, WattsMobi |
| Site waiting for a grid upgrade | Months until Creos can deliver | Bridge until the connection arrives | Mobile first, fixed later |
One EMS
Grid, battery, solar and chargers as one system
Peak price
The peak is covered by the battery
At a peak price of about €170/MWh, solar and the battery cover a 1.6 MW truck session. Grid import drops to about 100 kW.
- Peak price: The peak is covered by the battery. At a peak price of about €170/MWh, solar and the battery cover a 1.6 MW truck session. Grid import drops to about 100 kW.
- Grid support: Grid support in seconds. The grid frequency dips to 49.87 Hz and the battery discharges over 1 MW within seconds. The EMS can offer this response on balancing markets.
- Solar surplus: Solar used on site, by priority. 1.6 MW of solar: the building first, then 1 MW to the DC chargers, the rest to AC charging with VOOL load management. Nothing is wasted.
Financing
Storage as a monthly fee, from about €1 million
With our partner investment fund, which finances energy infrastructure, the fund finances and owns the system, we build and run it, and you pay one monthly fee: capacity as a service, opex instead of capex.
Ask your AI assistant
Energy storage questions
“Fixed or mobile battery storage: which do I need?”
“Can energy storage be financed without capex?”
“Who installs battery storage in Luxembourg?”
Send us a year of load data
With 15-minute load data, your prices and what the battery should do, we show the size, the format and the payback.