Sizing Snapshot
Daily Energy
2780 Wh
Battery Bank
279.8 Ah
Solar Array
1649 W
Inverter Baseline
375 W
Solar pSEO Landing
UK Winter 24V Off-Grid Solar Calculator P3
Profile 3: size battery Ah and panel watts for UK Winter conditions at 24V using 2.3 peak sun hours and 2-day backup.
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 |
Regional Sun-Window Guidance
Low winter sun window requiring larger battery and panel overhead.
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Sequential Long-Tail Navigation
FAQ
Is LIFEPO4 efficient for this load profile?
Yes, the model applies chemistry-specific assumptions for DoD and charging to keep estimates closer to practical planning ranges.
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.
24V solar setup: how many battery Ah do I need?
For this load profile, estimated LIFEPO4 bank sizing is 279.8 Ah at 24V with 2-day autonomy.
How many watts of solar panels are required for 2.3 peak sun hours?
The calculator estimates 1649 W panel capacity after charge and derate factors.