An off-grid solar system must generate, store and deliver all the energy a site uses. Nothing balances it from outside, so the planning is stricter: the load list comes first, the storage is sized from the load list, and the array is sized from both.
Buyers often ask first how many panels an off-grid site needs. The better first question is how much energy the site uses between sunset and sunrise, and on grey days, because that is what the battery bank must carry. The home system configuration detailed on this site is an off-grid design with battery backup, and its load table shows the discipline involved: every load is named, and the total is checked against what the system can supply.
Load discipline is not a hardship rule; it is how off-grid systems stay affordable. Separating essential loads from deferrable ones — pumping and heating water when the sun is up, for example — can shrink the battery bank more than any discount on panels.
Off-grid systems suit remote homes, farms, island and rural sites, and any building where grid outages are long or frequent enough that planning around them is pointless. If your grid fails for minutes rather than days, a grid-connected system with battery backup may serve you better; the comparison pages below work through that boundary.
Before ordering, confirm the minimum order quantity and lead time for your configuration, and ask which documents apply to the exact system you are quoted.
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