Sizing Snapshot
Daily Energy
2780 Wh
Battery Bank
559.6 Ah
Solar Array
1264 W
Inverter Baseline
375 W
Solar pSEO Landing
Fridge + Starlink 12V Solar Calculator P3 (3h/2d)
Group 3: estimate daily Wh, battery Ah, and panel watts for Fridge + Starlink at 12V with 3 peak sun hours and 2-day autonomy.
Load Breakdown
| Appliance | Power | Daily Runtime | Wh/Day |
|---|---|---|---|
| Fridge (60W x 24h) | 60 W | 24.00 h | 1440 Wh |
| Starlink (75W x 8h) | 75 W | 8.00 h | 600 Wh |
| Laptop (90W x 6h) | 90 W | 6.00 h | 540 Wh |
| LED Lights (40W x 5h) | 40 W | 5.00 h | 200 Wh |
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FAQ
Can this replace a full electrical audit?
Use this for planning and shortlist decisions, then validate with measured appliance duty cycles and local irradiance history.
12V solar setup: how many battery Ah do I need?
For this load profile, estimated LIFEPO4 bank sizing is 559.6 Ah at 12V with 2-day autonomy.
How many watts of solar panels are required for 3 peak sun hours?
The calculator estimates 1264 W panel capacity after charge and derate factors.
Why does lower battery voltage usually require higher Ah?
For the same energy demand, lower voltage systems need more current. That translates into larger Ah requirements and often thicker cabling.