On-Grid vs. Off-Grid Solar Systems
Should your system connect to the grid, work independently, or both? Compare on-grid, off-grid and hybrid designs.
Solar systems are usually grouped by how they relate to the utility grid.
On-grid (grid-tied) systems
An on-grid system works alongside the grid. Solar supplies your loads first; the grid makes up any shortfall. Where net metering or export is available and permitted, surplus solar can be sent to the grid. On-grid systems usually have the lowest cost because they do not need batteries, but they do not provide power during an outage.
Off-grid systems
An off-grid system is completely independent of the grid. It needs batteries large enough to cover night-time and cloudy periods, and often a backup generator. Off-grid systems suit remote locations without a reliable grid connection.
Hybrid systems
A hybrid system is connected to the grid and also has batteries. It can store solar energy for the evening and keep essential loads running during outages. Hybrid systems cost more than on-grid systems but offer more resilience.
Which is right for you?
- Reliable grid, mainly daytime use → on-grid
- Frequent outages or evening demand → hybrid
- No grid access → off-grid
Grid connection rules vary, so check local requirements before planning an export-capable system.
