Thinking about going off-grid or just want a solid backup for blackouts? A solar generator can be a game-changer. They’re clean, quiet, and don’t need jerry cans of petrol to keep running. But with so many models on the market, choosing the right one can feel a bit overwhelming.
Should you be looking at battery size, wattage, or how easy it is to chuck in the ute? Let’s break it down so you know exactly what to look for.
What's a Solar Generator, Really?
A solar generator is basically a portable power station. It soaks up the sun through panels, stores that energy in a battery, and then converts it into usable electricity. Unlike a petrol or diesel generator, there’s no fumes, no noise, and no pull cord to mess around with
How It Works:
1. Solar panels absorb sunlight and turn it into DC electricity.
2. A charge controller manages the flow of power and stores it in the battery.
3. An inverter converts the stored power into AC power– the same type your household plugs use.
Because they’re sun-powered, these units are popular with campers, caravanners, off-grid homeowners, and anyone who wants backup power for storms and outages.
What Are the Pros and Cons?
Like anything, solar generators have their strengths and trade-offs.
Advantages
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Clean and eco-friendly: Powered by the sun, so no emissions.
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Whisper-quiet: Perfect for bush camps or using at night without annoying the neighbours.
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Low running costs: No fuel bills, barely any maintenance.
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Versatile: Works for camping trips, road travel, or as a home backup.
- Safe and odour-free: No toxic fumes, safe indoors.
Disadvantages
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Higher upfront price: Good quality models aren’t cheap.
- Weather-reliant: Cloudy days = slower charging (unless you’ve got extra storage).
- Limited output on smaller models: Entry-level units may not run heavy appliances.
- Slower recharge: Petrol generators are instant; solar takes time.
How Do You Choose the Right One?
Here’s a step-by-step way to match a solar generator to your lifestyle.
Step 1: Work Out Your Power Needs
- List every device or appliance you want to run (phone, fridge, laptop, lights).
- Find the wattage (label/manual). If it’s shown in amps (A) instead of watts (W), multiply amps by volts (V) to get watts (W).
Volts (V) x Amps (A) = Watts (W)
- Add it up and multiply by hours used each day
Example:
Camping fridge (60W × 10 hours) = 600Wh
Two laptops (50W × 4 hours each) = 400Wh
Lights (10W × 5 hours) = 50Wh
Total daily usage = 1,050Wh
That number gives you a rough idea of the battery size and solar input you’ll need.
Step 2 – How Many Watts Is Enough?
Most everyday users get by with 500–1,500W systems. If you’re running larger gear or want whole-home backup, you’ll be looking at 1,500W+.
Here’s a simple guide to help you choose:
💡Pro Tip: Always give yourself a buffer. Choose a generator a bit bigger than your daily total to handle cloudy days or unexpected gear.
Step 3 – What Features Matter Most?
- Battery Size and Type: Bigger battery = longer run-time. Most decent models use lithium, which lasts longer.. If you need extra run‑time, consider a portable power station like the Bluetti Portable Power Station with the option to add more capacity using the Bluetti Expansion Battery.
- Power Output (watts): Check that it can handle your biggest appliance’s start-up surge.
- Charging Options: Can it charge from solar, wall power, or even your car? Some models charge faster than others, which is helpful if you’re travelling or dealing with cloudy weather.
- Expandability: Handy if you want to add extra panels or batteries later.
- Outlets: Make sure it has enough AC, DC, and USB ports.
- Portability: If you’re moving it often, look for wheels or tough handles. The EcoFlow Delta Pro 3 Portable Power Station with Built‑in Wheels is a great example, making transport effortless for travel or home use.
- Warranty and Support: Always worth checking before you buy.
💡Checklist idea: Write down your must-haves before comparing models so you’re not distracted by bells and whistles.
FAQs About Solar Generators
1. How many watts do I need?
Most campers and travellers do fine with 500–1,500W. Home backup usually needs 1,500W+.
2. Can a solar generator power my whole house?
Yes, but only if it’s big enough. Some solar generators are expandable with extra batteries to handle full-house loads.
3. Will it run a fridge or A/C?
Yes. Fridges usually pull 300–800W. A small air-con can need 1,000W+. Always check your generator’s rated output.
4. Does it save money over petrol?
Definitely. No fuel costs, fewer moving parts, and you’re running on free sunshine.
5. How long do they last?
Good lithium-based units can last thousands of charge cycles – years of regular use.
Final Thoughts
Choosing the right solar generator is all about knowing your daily energy use, then matching it to the right size and features. Once you’ve nailed that, you’ll have a reliable, clean power source for camping trips, road trips, or riding out blackouts at home.
Keen to explore options? Check out our full range of solar generators and find the perfect match for your needs.
