Harness solar power for van life without breaking the bank. Flexible panels, battery pairing, and off-grid camping made practical and affordable.

Plug-in Solar for Caravans, Motorhomes and Campervans UK

There's an unexpected audience for plug-in solar: the van life community. Caravans, motorhomes, and campervans are increasingly electrified—and solar is the natural fit.

Whether you're camping at hook-up sites (with mains power) or wild camping (without), plug-in solar reduces reliance on hook-ups, extends off-grid range, and cuts the costs of running fridges, lights, heaters, and devices.

The maths and technology differ from homes, so let me break down the van-specific considerations, recommended kits, and practical scenarios.

Why Van Dwellers and Campers Love Plug-in Solar

Off-grid freedom: Hook-up pitches cost £30–50/night. Wild camping with solar can be free. Even partial solar generation extends your camping range.

Power independence: No reliance on deteriorating site power, no voltage fluctuations damaging equipment, no waiting for site owners to fix electrics.

Van-friendly hardware: Flexible solar panels fit curved caravan roofs. Portable ground-mounts work on flat campgrounds. Batteries small enough to fit under seats are still useful.

Cost: A complete van solar system (400W flexible panel + MPPT controller + 2.4 kWh battery) costs ~£1,500–2,000. That pays for itself in saved hook-up costs within 2–3 years.

Environmental: Sunny days = free electricity. No guilt about grid consumption at campsites.

Hardware Differences: Van Systems vs. Home Systems

Home plug-in solar:

Rigid panels (fixed mounting)
Standard 13A socket connection to house
AC/DC hybrid inverters
Mains-grid capable (G98 notification)

Van solar systems:

Often flexible (thin-film) panels for curved roofs, or portable rigid panels
MPPT charge controllers (maximum power point tracking)
12V or 48V lithium batteries (not grid-connected)
DC distribution (powers 12V circuits directly) + optional AC inverter for 230V appliances

Key difference: Van systems are off-grid by design. You're not exporting to the grid; you're charging a battery for later use. This simplifies regulation (G98 doesn't apply) but requires more equipment.

Panel Options: Flexible vs. Portable

Flexible Panels (Roof-Mounted)

Use case: Caravan or motorhome with curved or low-profile roof

Advantages:

Permanent installation, no setup on arrival
Light (1.5–2.5 kg per 100W)
Integrated into roof, no wind risk
Invisible to most campers (theft-proof)

Disadvantages:

Limited to 100–200W per panel (thick cables needed for high current)
Roof heat reduces efficiency (flat RVs get hotter)
No angle adjustment (less than optimal in winter or morning/evening)

Recommended: 2–3 × 100W flexible panels (200–300W total) = £400–600

Portable Rigid Panels (Ground-Mount)

Use case: Motorhome or campervan where you can deploy ground-mounts on arrival

Advantages:

Higher efficiency (cooler operation than roof-mounted)
Adjustable angle (tilt toward sun for 20%+ output boost)
Scalable (add more panels as budget allows)
Move between vans (not vehicle-specific)
Better for part-time campers (deploy only when using the van)

Disadvantages:

Setup time on arrival (10–15 minutes)
Wind risk in exposed locations
Theft risk at unattended sites
Cables trail from van to panels

Recommended: 1–2 × EcoFlow 400W Portable Panel (£299 each), or Renogy 200W equivalent (£250)

Charge Controllers: MPPT vs. PWM

If you're adding solar to an existing van leisure battery, you need a charge controller.

MPPT (Maximum Power Point Tracking):

Optimises panel voltage to match battery state of charge
10–20% more efficient than PWM
Cost: £100–300
Recommended: Victron SmartSolar (£150–200) or Epever MPPT (£100–150)

PWM (Pulse Width Modulation):

Simpler, direct voltage matching
Cheaper (£30–80)
Adequate for small systems (<400W)
Suitable for: second leisure battery, small panels

Verdict: MPPT is worth the extra cost if you're serious about off-grid camping. PWM is fine for topping up an existing leisure battery on occasional trips.

Battery Storage: The Critical Component

Van solar without battery storage is like a home system without the grid—you only have power when the sun shines.

Options for campers:

All-in-One Portable Batteries

EcoFlow DELTA 2 (~£599)

Capacity: 1.024 kWh
AC output: 1,500W
Solar input: Yes, via integrated MPPT
Weight: 15 kg
Ideal for: Motorhome with 230V appliances (kettle, microwave, heater)
Reality: Powers fridges, lights, devices for 1–2 days off-grid

Jackery Explorer 1000 v2 (~£499)

Capacity: 1.268 kWh
AC output: 1,500W
Solar input: Yes, via 400W max panel
Weight: 11.5 kg
Ideal for: Campervans wanting lightweight, portable battery
Reality: Matches EcoFlow DELTA 2 performance, slightly higher capacity

EcoFlow STREAM Kit (~£699)

Capacity: 1.2 kWh
Designed for home plug-in solar but van-adaptable
AC output: 1,200W
More compact than DELTA 2
Ideal for: Smaller vans, minimalist setups

All three are lithium (LiFePO4), safe, and van-legal.

Traditional Leisure Battery (12V)

If your caravan already has a leisure battery:

Upgrade to LiFePO4: 200 Ah = ~2.5 kWh, replaces old lead-acid, costs £1,200–1,500
Add solar controller: Connect your 400W portable panel to an MPPT charge controller, which charges the leisure battery during the day
Advantage: Integrated into van electrics, no separate batteries
Disadvantage: Expensive upgrade, requires installation

Verdict: For new campers, portable all-in-one batteries like EcoFlow DELTA 2 are simpler. For existing caravan owners with outdated leisure batteries, replacing with LiFePO4 + MPPT solar is a long-term investment.

Real Scenarios: Off-Grid Maths

Scenario 1: Motorhome, Couple, Hook-up Sites + Occasional Wild Camping

Vehicle: 6m motorhome, 230V kettle, 12V fridge, lights, heating

System:

EcoFlow 400W Portable Panel (£299)
EcoFlow DELTA 2 (£599)
MC4 Extension Cable (£20)
Total: ~£918

Daily scenario (summer, south England, camping near Cornish coast):

Panel output: 2–3 kWh
Battery starts at 20% (120 Wh)
Daily consumption: kettle (0.5 kWh), fridge (0.3 kWh), heating/lights (0.4 kWh) = 1.2 kWh
Morning solar: 2 kWh generation, minus 0.6 kWh consumption = 1.4 kWh stored
Afternoon solar: 1 kWh generation, minus 0.6 kWh consumption = 0.4 kWh stored
End of day: Battery at 95% (charged)
Off-grid range: 2–3 days fully self-sufficient before needing grid recharge

Cost per trip: If you'd normally pay £40/night hook-up × 3 nights = £120, solar saves that. System pays for itself in 7–8 trips (2 years of regular camping).

Scenario 2: Caravan, Family, Hook-up + Part-Time Wild Camping

Vehicle: 8m caravan with leisure battery, 230V appliances, kids' devices

System:

200W flexible panels roof-mounted (£300–400)
Victron SmartSolar MPPT 100/30 (£150)
Upgrade leisure battery to LiFePO4 200 Ah (£1,200)
Total: £1,650–1,750

Daily scenario (spring, Midlands, family campsite):

Panel output: 0.8–1.2 kWh (lower than motorhome due to angle, cooler weather)
Daily consumption: microwave (0.6 kWh), water heater (0.8 kWh), lights/devices (0.5 kWh) = 1.9 kWh
Panel covers: ~60% of daytime needs; grid covers 40%
Result: Reduced grid consumption by 1 kWh/day
Cost per month: 30 days × 1 kWh × £0.24 = £7.20 saved
Off-grid range: Can wild camp for 1–2 days before needing mains recharge

Payback: 18–24 months (assuming frequent camping)

Scenario 3: Campervan, Solo Traveller, Extended Off-Grid

Vehicle: 3.5m campervan, minimalist setup (lights, fridge, laptop charging)

System:

EcoFlow 400W Portable Panel (£299)
Jackery Explorer 1000 v2 (£499)
Total: £798

Daily scenario (summer, Scottish Highlands):

Panel output: 2–2.5 kWh (long daylight)
Consumption: 12V fridge (0.3 kWh), lights (0.1 kWh), laptop (0.2 kWh) = 0.6 kWh
Off-grid range: 4–5 days before needing grid recharge
Cost per month: Wild camping × 20 days, saved hook-up costs = 20 × £35 = £700/month saved vs. sites

Payback: 1 year (if you camp frequently and avoid paid sites)

Mounting and Installation

Ground Mounting (Portable Panels)

Setup:

Place panel on adjustable ground stand (folds flat for transport)
Tilt to face sun, adjust angle 2–3 times per day for optimal output (15–20% efficiency gain)
Run solar cable (usually pre-attached to panels) to campervan, plug into battery/controller

Time: 10–15 minutes per deployment

Safety:

Secure stand against wind (sandbags, tent pegs)
Cables run along ground (tripping hazard—keep clear of high-traffic areas)
Disconnect before moving van (obvious, but worth noting)

Ideal locations: Flat, south-facing camping pitches, wild camping areas near coast or moors (high sky exposure)

Roof Mounting (Caravan/Motorhome)

Professional installation:

Penetrations (holes in roof) = potential for leaks if not sealed properly
Cost: £300–500 labour
Warranty: Many caravan manufacturers void warranty for roof modifications
Reality: Most caravanners DIY or use specialist RV installers (search "caravan solar installation UK")

DIY installation:

Adhesive mounting systems (don't penetrate roof) cost extra but avoid leak risk
Requires electrical knowledge (safe wiring to leisure battery)
Difficulty: Moderate (roof access, waterproofing)

Recommendation: For permanent setups, hire a specialist RV installer. For portable setups, ground-mounted panels are safer and cheaper.

Regulatory Considerations: G98 Not Required

Key point: Plug-in solar (or van solar) for off-grid use is not grid-connected, so G98 notification does not apply.

G98 is only needed if you're exporting power back to the grid. If you're:

Charging a leisure battery (off-grid)
Using battery power for campsite appliances (off-grid)
Not feeding electricity back to mains (not exporting)

...then G98 is irrelevant. No paperwork needed.

If you were ever on a caravan park with grid connection and wanted to export solar back to the site's mains: That would require G98. But this is rare.

Practical Accessory Recommendations

TP-Link Tapo P110 (£15)

Monitor battery discharge/recharge in real-time
Useful for understanding consumption patterns
Not essential, but helpful for learning

Renogy MC4 Extension Cable (£20)

If your portable panels come with 10m cables, you may need extension for larger campgrounds
Saves on expensive repeat cables

Voltage/current display: Most MPPT controllers have built-in displays; some are wireless (Victron). Optional but useful for monitoring system health.

Powering Specific Appliances

Fridge: 100–150W continuous (1.2–1.8 kWh/day)

Can run on solar alone in sunny weather (most important for camping)
EcoFlow DELTA 2 can run a fridge for 3–4 days from battery alone

Microwave/Kettle: 2–3 kW peak (needs AC inverter)

Portable batteries (EcoFlow, Jackery) can handle 1–2 cycles per day
Not sustainable off-grid (drains battery quickly)
Use gas hob or camping stove for hot water instead

Heating: Electric heater = 2 kW (not viable off-grid)

Use gas heater or insulation instead
Some portable heaters (1.5 kW) can run from battery for short periods

Water heating: Immersion heater (3 kW) = not viable off-grid

Use gas boiler or solar thermal (separate setup)
Portable kettle is more efficient

Laptop/Devices: 100W (okay all day)

Solar can power this indefinitely in daylight
Easiest appliance to run off solar

Seasonal Adjustments

Summer (June–August):

Long daylight (16+ hours), high sun angle
2–3 kWh generation daily from 400W panel (unshaded)
Off-grid camping easily sustainable

Spring/Autumn (April–May, September–October):

12–14 hours daylight, moderate sun angle
1–1.5 kWh generation daily
Off-grid possible but battery depth requires management

Winter (November–February):

8–9 hours daylight, low sun angle
0.4–0.6 kWh generation daily
Off-grid camping difficult; most campers use hook-ups or reduced consumption
Motorhome heating (gas, not electric) is critical

Recommendation: Off-grid solar works best for UK camping April–October. November–March, plan hook-up sites or reduce heating/appliance usage.

FAQ for Van Dwellers

Q: Can I run my diesel heater on solar? A: No—diesel heaters use diesel fuel, not electricity (only the glow plug uses ~2W). Solar doesn't help. Use gas heating instead if off-grid.

Q: Will solar panels work in Scotland? A: Yes, but generation is lower. 400W panel generates ~0.8–1 kWh in Scottish summer, vs. 2+ kWh in South England. Still worthwhile for extended camping trips.

Q: Can I leave the system installed year-round? A: Flexible panels yes (weatherproof). Portable panels should be removed (stored indoors) when the van isn't in use to prevent deterioration and theft.

Q: Is a battery necessary? A: For any camping beyond 6 hours of daylight, yes. Without storage, you only have power during sunny afternoon hours (useless for evenings, rainy days).

Checklist: Van Solar Setup

Decide: Portable panel vs. roof-mounted?
Measure available roof space or ground pitch area
Choose battery: EcoFlow DELTA 2, Jackery 1000 v2, or traditional leisure battery upgrade?
Estimate daily consumption: fridge (kW-hours), heating (gas or electric?), devices
Calculate payback: annual hook-up costs saved vs. system cost
Check caravan/motorhome warranty: does modification void it?
Plan installation: professional or DIY?
Test in spring: ensure system works before summer holiday

Conclusion

Van life and plug-in solar are a natural pairing. Whether you're a retiree with a caravan exploring the Cotswolds, a family with a motorhome seeking freedom from pricey hook-ups, or a solo traveller in a campervan chasing off-grid adventures, solar extends your range and reduces costs.

The technology is proven, the hardware is van-specific, and the payback—especially for frequent campers—is strong. A £1,000 system can save £500–800/year in avoided hook-up costs. That's a 2-year payback for a lifestyle upgrade that lasts 20+ years.

Your next camping trip could be powered by the sun.

Related reading:

Flexible Solar Panels Guide (coming soon)
Battery Roundup: EcoFlow vs. Jackery vs. Anker (coming soon)
Savings Calculator