BESS is not a default add-on for every industrial roof. Some sites need it; many should tighten solar and electrical design first.
Stronger fit
Evening load after sun fades, painful demand charges, or processes hurt by short dips—cold rooms and continuous lines are common examples.
Weaker fit
Heavy daytime load, enough roof area, and a goal that is mainly midday bill reduction. Well-sized solar often delivers first.
Before picking a pack size
Load profile, real backup hours, room/cooling space, and a safe main-board tie-in plan.