How many watts of solar for a caravan?

100W for basic use (lights + phones). 200W for standard use (+ fridge + devices). 300W for full off-grid (+ TV + laptop). Most UK touring caravans work well with a 200W panel.

Can I install caravan solar panels myself?

Yes — caravan solar is 12V DC and suitable for DIY. Mount the panel, run cable through a gland, connect to a charge controller and leisure battery. Takes 3–6 hours. No electrician needed for 12V systems.

Do caravan solar panels work in UK weather?

Yes. In UK summer: a 200W panel generates 800–1,000Wh/day — enough for full caravan needs. In spring/autumn: 400–700Wh. Winter: 150–350Wh. Most UK caravan touring is April–October when solar performs well.

Rigid or flexible panels for a caravan?

Rigid monocrystalline for best performance and longevity (15–20 years). Flexible for low profile and weight savings (5–10 years). Portable/folding for maximum flexibility and no permanent modification. Most caravanners choose rigid roof-mounted.

Solar Panels for Caravans: Guide

Last updated: 18 March 2026

Independently written

Solar panel system providing off-grid power for caravan touring — Caravan solar keeps your leisure battery charged — camping without hook-up, powered by sunshine.

How much do caravan solar panels cost?

Caravan solar panels cost £150–£500 for a 100–300W system. A 200W panel with MPPT controller costs approximately £250–£400 and generates enough to run LED lights, charge devices, power a 12V fridge, and keep your leisure battery topped up during UK touring. Rigid monocrystalline panels are best for permanent roof mounting. Portable folding panels suit those who want flexibility. Installation is straightforward DIY — no electrician needed for 12V systems.

Caravan Solar Sizing Guide

Typical caravan daily electricity use:

| Equipment | Daily Consumption | |-----------|------------------| | LED interior lights (6 hours) | 30 Wh | | 12V compressor fridge (24 hours) | 400–600 Wh | | Phone/tablet charging (2 devices) | 30 Wh | | Water pump (occasional) | 20 Wh | | TV (3 hours via inverter) | 120 Wh | | Laptop (2 hours) | 100 Wh | | Total (no heating) | 700–900 Wh |

Recommended panel sizes:

| Usage Level | Panel Size | Cost | Daily Output (UK Summer) | |-----------|-----------|------|------------------------| | Basic (lights + phones) | 100W | £100–£200 | 400–500 Wh | | Standard (+ fridge) | 200W | £200–£350 | 800–1,000 Wh | | Full (+ TV + laptop) | 300W | £300–£500 | 1,200–1,500 Wh |

For most UK touring caravans: 200W is the sweet spot.

Source: Caravan electrical consumption data; panel manufacturer specifications.

How caravan solar works — panel to controller to leisure battery — Caravan solar is simple: panel → charge controller → leisure battery → your devices.

Mounting Options for Caravans

Rigid roof-mounted (most popular): - Bolted or adhesive-mounted to caravan roof - Permanent — always generating when parked - No setup/takedown required - Weight: 8–12kg per 200W panel - Slight reduction in headroom clearance (35mm panel depth) - Best for: regular tourers who want set-and-forget

Flexible panels: - Thin, lightweight panels that curve to match roof contour - Adhesive bonded directly to roof - Virtually no added height - Weight: 2–4kg per 200W panel - Shorter lifespan than rigid (5–10 years vs 15–20) - Best for: low-profile installation, lightweight caravans

Portable/folding: - Set up on the ground when parked, store when travelling - No permanent modification to caravan - Can angle toward the sun for maximum output - Weight: 5–8kg per 200W (easy to carry) - Must be put away before driving - Best for: occasional use, hire caravans, maximum flexibility

Source: Caravan solar installation guides; product specifications.

Optimal angle for caravan solar — portable panels can be angled toward the sun — Portable panels angle toward the sun — rigid roof panels generate less but need no setup.

Essential Components

A complete caravan solar kit includes:

Solar panel (100–300W) — rigid, flexible, or portable
MPPT charge controller (£40–£120) — 15-20% more efficient than PWM; regulates charging to protect battery
Cable gland (£10–£25) — waterproof entry for cables through roof (for roof-mounted only)
Solar cable (4mm², £15–£30) — UV-resistant, connects panel to controller
Fuses and fuse holders (£5–£15) — safety protection between components
Leisure battery — if upgrading: lithium LFP (100Ah, £300–£800) or AGM (110Ah, £100–£250)
Battery monitor (£30–£80, optional) — shows charge level, consumption, and solar input
Inverter (£40–£200, optional) — converts 12V DC to 230V AC for mains devices

DIY Installation

Caravan solar is an excellent DIY project:

Time required: 3–6 hours for a first-time installer

Steps: 1. Plan panel position on roof (south-facing when parked, away from vents/aerials) 2. Mount panel using brackets or adhesive (4 corner brackets, drill or bond) 3. Install cable gland through roof (drill one hole, seal with gland + sealant) 4. Route cable inside caravan to charge controller location 5. Mount charge controller near leisure battery 6. Connect: panel → controller → battery (follow controller instructions) 7. Fuse all connections appropriately 8. Test in sunlight — controller should show charging

Safety notes: - All 12V DC — no dangerous mains voltage - Disconnect battery before wiring - Ensure correct polarity (+ to +, – to –) - Seal all roof penetrations thoroughly (silicone sealant) - If adding a 230V inverter: AC wiring should comply with BS 7671

Source: Caravan Club solar installation guide; NCC electrical standards.

Caravan solar charging leisure battery during the day for evening use — Solar charges your leisure battery all day — providing power for lighting and devices all evening.

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