Panels generate electricity. A battery moves some of that electricity to another time. Assess the extra cost and benefit separately.
Start with the panels
Ask for a generation estimate that reflects your roof, shading and location. Compare that estimate with your electricity use across the day and across the seasons. Annual totals alone cannot tell you how much solar electricity you will use directly.
Price the battery separately
Request two comparable quotes: the solar installation on its own and the same installation with a battery. The additional benefit must account for electricity that would otherwise have been exported, energy lost in storage and the battery’s usable capacity. Extra self-sufficiency does not automatically mean a faster return.
Compare three everyday scenarios
Consider your home as it is today, with flexible appliances shifted into daylight hours, and with storage added. Use realistic routines in every case. If backup power matters, ask exactly which circuits work during an outage; this is not a standard feature of every battery installation.