The stacked revenue model of a smart battery.

The question is never whether a battery delivers value, but how many roles it plays at once. A single role — only buffering solar power, only shaving peaks — leaves most of the value on the table. The revenue model of storage is a stack, and every layer reuses the same investment.

The layers of the stack

From foundation to roof:

• Peak management: the battery absorbs your consumption peaks — lower grid charges and room on your connection.
• Self-consumption: solar power you would otherwise feed back at a low rate, you use yourself in the evening.
• Energy trading: the battery buys in cheap hours and sells in expensive ones — fully automatic on the day-ahead market.
• Imbalance and flexibility: your flexible capacity helps keep the grid in balance, and you get paid for it.
• Backup: during a fault, the reserved capacity keeps your critical processes running.

Why stacking fails without a system

The layers compete for the same kilowatt-hours. A full battery cannot absorb more solar power; an empty one cannot catch a peak. Every hour the question returns: what is the most valuable use right now — and what does that mean three hours from now?

That trade-off is exactly what a human cannot sustain and an algorithm can: combining forecasts of consumption, generation and prices into one control decision per moment, within the limits you set. That is how the same battery earns on several boards at once, without compromising security.

Run the numbers first, then buy

Which battery size, which brand, which stack of layers — that follows from your profile, not the other way around. Have your situation modeled on your own data before you order: then you buy the battery that fits, and you know upfront what it will deliver.