The balance between solar generation, household demand and cheap grid electricity changes through the year.
The Short Answer
A fixed battery schedule can leave money on the table. Winter often needs more grid charging, while summer usually needs more spare capacity for daytime solar.
Winter strategy
Solar production is lower and evening demand can be higher. The battery may need a higher overnight charge target so that it can cover expensive daytime and evening imports.
Summer strategy
Strong daytime PV can refill the battery naturally. Charging too much overnight may leave no room for solar and force more generation to be exported.
Spring and autumn
Shoulder months are variable. Forecast-aware or regularly reviewed settings can outperform a rigid winter/summer date switch.
Keep reserve settings sensible
Backup reserve is separate from tariff optimisation. If outage protection matters, maintain an appropriate minimum state of charge rather than sacrificing resilience for small tariff gains.
Key Takeaway
Battery economics depend on the complete energy flow: what electricity costs when you charge, what it would cost when you discharge, what solar export is worth, and how efficiently the battery is used.
Frequently Asked Questions
How often should I review settings?
At least seasonally, and whenever your tariff, household usage or major appliances change.
Can the battery change settings automatically?
Some systems support weather, tariff or AI-driven optimisation; others use fixed schedules.
Should I charge from the grid in summer?
Sometimes, but often at a lower target because expected solar generation can provide the daytime charge.
Review My Battery Settings
Check whether your current schedule still suits this season and your tariff.
Tariffs, supplier terms and export payments change. Check the current plan details before making a purchasing or settings decision.