When is a balcony battery worth it?
A battery is not decoration. It is useful when it shifts daytime solar production into afternoon and evening demand, and the examples below show that difference.
The final battery unit is confirmed with the final supplier.
Decision examples with numbers
These examples show the practical difference a battery makes, instead of just describing it in prose.
Klarna financing
Installments are shown beside the upfront price. Final approval happens at checkout.
Without a battery, a small balcony PV system works best when someone uses power during the day. With a battery, Sunrail models 85-95% self-consumption because part of the production is stored for evening use. If you have heavy daytime use, Basic may already be enough.
Panels produce while the sun is high. Value is lost if there is no demand or storage.
The battery covers part of the loads that appear after sunset.
| Profile | First pick | Why |
|---|---|---|
| Home during the day | Basic or Smart | Basic can have a cleaner payback if you use power while it is produced. |
| Away during the day | Smart | The battery shifts some production into afternoon and evening use. |
| Higher bill and enough space | Max | More panels and storage for higher annual savings. |