Powering a free camp
Use no more each day than your solar puts back.
A compressor fridge runs 33% to 50% of the day, which makes it the biggest daily draw.
Many free camps limit or ban generator hours, so check the site's rules before you plan around one.
Updated . 9 min read • Lifestyle
Match your daily use to what your solar replaces each day, and let the battery carry you through the nights.
The fridge is almost always the biggest single draw, so it decides more of the daily budget than anything else in the van.
- Biggest daily draw - the fridge compressor (typically running 1/3 to 1/2 of the day)
- Generator rules - check the site before you rely on one (many free camps restrict or ban generator hours)
What actually draws the power
The fridge dominates the daily total in almost every van. A compressor fridge cycles on and off rather than running flat out. It typically draws power 33% to 50% of the day, depending on the weather and how often the door opens.
Everything else, lights, phones, a laptop, the water pump, adds up to a smaller total, but it is the part most within your control day to day. Knowing the fridge is the anchor of the budget is the useful starting point before you worry about anything smaller.
The daily charge rhythm
Solar makes power during daylight hours and the van draws power around the clock, so the battery is always the buffer between the two rather than a source in its own right. On a good day, solar replaces most or all of what was used overnight before the sun goes down again.
Driving days add another top-up, since most vans charge the house battery from the tow vehicle while moving. A run of overcast days or several days parked in one spot without much driving is when the battery actually gets tested, which is the scenario worth planning around rather than a sunny afternoon.
Stretching what you have got
Small, repeatable habits move the daily total more than most people expect, without touching the equipment at all.
Mind the fridge door
Every time the door opens, warm air gets in and the compressor works harder to recover. Grabbing everything you need in one open beats several quick checks.
Charge devices by day
Charging phones, a laptop or a battery-powered tool while solar is actively coming in draws on daylight power rather than eating into what the battery is holding for overnight.
LED lighting, if you do not already have it
LED draws a fraction of older lighting for the same brightness, and it is one of the cheapest changes available before touching the battery or the panel.
Angle a portable panel to the sun
A roof panel is fixed flat, but a portable panel can be angled toward the sun through the day, which measurably increases what it harvests over a fixed roof panel alone.
The panel that last habit needs
A folding panel is the one you can stand in the sun while the van itself sits in the shade. BLUETTI sells a 220W folding panel that does that job, and we earn a commission if you buy through the link below. We earn nothing from the habits above. Check the connector and the input limit on whatever you are charging before you order a panel, whichever brand you buy.
When habits are not enough
Habits stretch a setup, they do not replace one that is genuinely too small for how you camp. If you are consistently running short by the third or fourth day in one spot, the fix is capacity.
A generator can make power rather than store it, which is the real advantage over any battery, but check the site's rules first. Many free camps and reserves restrict generator hours to set windows or ban them outright, both to manage noise and out of consideration for other campers, and most that do allow them expect quiet overnight regardless.
Check before you rely on a generator
Confirm the specific site's generator rules before you plan a trip around one. Sign-posted hours and outright bans both exist, and they vary site to site rather than following one national rule.
If the fix is capacity
A portable power station is the version of that fix nobody has to wire in. The Elite 200 V2 from BLUETTI is rated 2,074Wh, so about 1,763Wh of it is yours to spend once you allow for the usable share of any battery. It weighs 24.2kg, which is a two-handed lift in and out of a car. That is a BLUETTI link and we earn a commission if you buy through it.
Whether that covers your third and fourth day depends entirely on your own list, so run it through the power calculator before you decide on a size.
Free camp power questions, answered
What uses the most power in a caravan at a free camp?
The fridge, in almost every van. A compressor fridge cycles on and off rather than running continuously, typically drawing power somewhere between 33% and 50% of the day depending on the outside temperature and how often the door opens, and that single appliance usually accounts for more daily watt-hours than lights, phones and a laptop put together.
How long will my battery last without solar at a free camp?
It depends on your battery's usable capacity and your daily draw, and the honest answer is to do the sum for your own van rather than assume a figure. Work out your daily watt-hours, check how much of your battery's rated capacity is genuinely usable for its chemistry, and divide one by the other. Our power and solar calculator runs this for you against your own numbers.
Can I run a generator at a free camp?
Only if the site allows it, and plenty do not. Many free camps and reserves restrict generator hours to set windows of the day or ban them outright, both to manage noise and out of consideration for other campers. Check the specific site's rules before you plan around one, and keep in mind that even where generators are allowed, most sites expect them off overnight.
Do LED lights actually make a real difference to free camp power use?
Yes, and it is close to a free upgrade if a van does not already have them. LED lighting draws a small fraction of what older incandescent or halogen caravan lighting used, and since lights are one of the few loads fully within your control, swapping to LED is one of the higher-value, lowest-cost changes available before you touch anything bigger like the battery or the panel.
Should I turn things off at the wall to save power at a free camp?
It helps less than the big loads, though it is still worth doing once those are handled. The fridge and anything with a motor or a heating element dominate the daily total, so that is where the real savings live. Standby draw on small electronics is comparatively minor, worth managing once the big loads are under control, not the first place to look for savings.
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