Design on your figures
We calculate on your annual statement and your quarter-hour data. Capacity, power and phasing follow from that, not from a list of packages.
A battery stores. An EMS decides.
We design and install your complete system: solar panels, inverter and battery, with inspection and registration with the grid operator. And we connect everything that asks for energy to it, so water heater, heat pump, charge point and pool work together under one control layer.
Installing a battery is layers 1 to 4. Running the house is layer 5.
A home battery has five layers. The first four are in every offer. The fifth decides what your installation actually does, and that is usually where the offer stops.
EMS: energy management
Decides who gets power and when: battery, grid, sun and every device in the house.
ESS: Energy Storage System
Battery and inverter working together for self-consumption and grid interaction.
Inverter
Converts direct current into alternating current for house and grid, and back.
BMS: battery management
Watches voltage, temperature and charge limits. Protects the cells.
Battery
Cells, modules, rack. The storage itself.
What layer 5 controls
Hot water
The water heater runs when power is cheap or the sun is in surplus.
Heating
Heat pump and buffer tank as flexible storage, in the form of heat.
Cooling
Pre-cooling during sunny hours instead of at the evening peak.
Charge point
Charges on surplus and pauses as soon as the monthly peak comes into view.
Swimming pool
Filter pump and pool heat pump run on solar surplus.
Switchable circuits
Any device with a contact: relay, Shelly, dry switching.
What we do
We deliver the whole installation and the control layer on top of it. One party, from the first conversation to the inspection.
Installing the complete system
Solar panels, inverter, battery, cabling and cabinet. If you already have panels or a battery, we build on what is there.
Inspection and registration
We arrange inspection by an accredited body and register your installation with the grid operator. You receive the file.
Control that grows with you
On top of that comes the energy management, where it makes sense. If your situation changes, the control logic changes with it.
Why those connections make the difference
A 10 kWh battery is limited. A house full of controllable devices is not.
A lower monthly peak
Devices give way to each other, so your peak, and with it your capacity tariff, comes down.
Heat as storage
Water heater, buffer tank and pool store cheap energy as heat, far cheaper than extra kWh of battery.
Shifted consumption
On a dynamic contract, consumption moves to the hours when power is cheap or even negatively priced.
Comfort stays comfort
Control within limits you set yourself: water hot, house warm, car charged when you need it.
The difference from a standard home battery
| Standard home battery | EMSwise | |
|---|---|---|
| What you buy | A device with factory settings | A system that makes decisions |
| Sizing | Picked from a list of packages | Calculated from your quarter-hour data and your peaks |
| Capacity tariff | Rarely taken into account | Peak reduction is an explicit design goal |
| Solar surplus | Goes to the battery, then to the grid | Goes to battery, water, climate and car, in that order |
| Other devices | Work independently of each other | Work together under one decision layer |
| After handover | Finished | Adjusted as tariffs or devices change |
| Openness | Often a closed ecosystem | Open protocols; you keep ownership of your configuration |
How we work
Design first, size second. Not the other way round.
Conversation
What do you want: a lower bill, certainty during an outage, more autonomy? That choice drives every other one.
Analysis
We read your annual statement and the quarter-hour data from your digital meter. That holds your real profile, not an estimate.
Design
Capacity, power, phasing, backup circuits and which devices become controllable, with the limits stated honestly.
Build, inspection and registration
Assembly and commissioning, an inspection with a checklist and a thermal image, the statutory inspection by an accredited body and registration with the grid operator. The file is yours.
Adjustment
Tariffs, devices and habits change. The control logic changes with them.
Why EMSwise
Engineering, not sales
We write the control logic ourselves and read the measurements ourselves. One technical owner across hardware, software and execution.
Tested on our own systems first
Whatever ends up at your home has already run for weeks on our own installations.
Inspection with thermography
Every installation is checked before handover, including a thermal image of the connections.
Open technology
Documented interfaces, local operation where feasible, integration with Home Assistant and other open platforms.
Curious what is possible in your home?
Send us your situation in a few lines. We answer with what is technically possible, roughly what it takes, and where the limits are.