Worked example
Solar & battery sizing for a shed / workshop
An off-grid workshop running lights, a few power tools intermittently, and charging, away from mains power.
Open this shed / workshop setup in the calculator →
Example daily load
| Device | Power | Use | Energy |
|---|---|---|---|
| LED shop lights | 120 W | 4 h/day | 480 Wh |
| Tool charger | 90 W | 2 h/day | 180 Wh |
| Fan | 60 W | 3 h/day | 180 Wh |
| Radio | 15 W | 4 h/day | 60 Wh |
| Total | 900 Wh/day |
Sized system (AGM, 12V, 2 days autonomy)
Battery bank
4.6 kWh
Capacity
384 Ah @ 12V
Solar array
326 W
Sun hours assumed
4.0 h/day
Open this setup in the calculator — then adjust for your own devices →
Notes for a shed / workshop
These figures assume 4.0 peak sun hours and 2 day(s) of autonomy. If your location is cloudier, your usage is higher, or you want more buffer, increase autonomy or array size. The button above opens the full calculator pre-loaded with this shed / workshop setup, so you can change any device, voltage or chemistry and see the system resize instantly — the example is a starting point, not a prescription.