Good timing matters almost as much as good equipment
A battery purchased too early can eat into a budget that would be better invested in additional panels, better roofing or consistent EMS. Conversely, waiting without planning anything can make future additions more complicated and more expensive.
The 4 criteria to review
Look at your current consumption profile
If your evening and night consumption remains low, the battery may have little immediate effect. The more your uses are offset after solar production, the more relevant storage becomes.
Check if your installation can be “battery-ready”
The good compromise often consists of choosing today an architecture that facilitates the future addition of a battery: suitable inverter, technical space, cabling logic and coherent monitoring.
Compare actual usage to purchase cost today
A battery is not only judged on the dream autonomy. It must be linked to the real value of the kWh it displaces, to your rate of consumption and to the opportunity cost of immobilized capital.
Decide according to the probable evolution of the outbreak
If a terminal, a heat pump, a more advanced EMS or a need for continuity are planned soon, buying later may be more coherent. If the home is already heavily electrified, the battery can defend itself now.