Hybrid vs off-grid, explained simply

Hybrid

A hybrid system stays connected to the grid. Solar and battery cover your usage first, and the grid is still there as backup for the times solar and battery genuinely can't keep up — an extended run of cloudy days, or unusually high demand. It's the most common setup for homes and businesses, because most people aren't trying to eliminate the grid entirely — they want lower bills and reliable backup.

Off-grid

An off-grid system runs independently of the grid entirely. Every kilowatt-hour you use has to be generated and stored on-site, which means the array and battery capacity have to be sized for your worst realistic day — a grey winter week, not a sunny average one. That makes it a significantly bigger technical and financial undertaking than a hybrid system, and it's a bigger decision than the name alone suggests.

When off-grid actually makes sense

Sometimes going off-grid isn't really a solar decision — it's a response to what's happening with the grid connection itself. A Waterkloof office block we worked with was carrying significant monthly transformer rental costs on top of its electricity bill, which made the grid connection itself the expensive part; removing it altogether ended up making more sense than working around it. A dairy farm we installed for had outgrown its existing transformer, with no larger one available from Eskom — going off-grid was the only way to support the farm's continued growth. And a school we've worked with over several years phased its way there in stages, until Eskom became backup rather than the main supply.

Those are the situations where off-grid tends to make sense: the grid connection is unreliable, prohibitively expensive to expand, or independence is genuinely the goal — not just a bigger version of wanting backup power.