What’s the Best Solar Generator for 2021? Here Are the Top 11

Best solar generators

Whether you want to live off the grid for a while or just have a backup source of power, a generator is a must-have.

And traditionally, gas generators have been the go-to. But with solar power generators making serious gains in terms of capacity and technology overall, more and more people are finding them to be a better, more eco-conscious alternative at home. (Learn more about ways to become more environmentally conscious.)

Plus they’re safer than gas and don’t emit harmful fumes.

So, in this deep dive, we’ll look at the best solar power generators out there. Here’s what we’ll dig into:

First, let’s look at what exactly a solar generator is.

What is a solar generator?

Essentially, a solar generator is a super battery that stores up a huge amount of electricity, which you’d typically get from solar panels that are hooked up to the generator. That being said, almost all solar-powered generators are also able to charge up through a regular wall outlet and car cigarette adaptors. (Because hey, sometimes you just don’t get a lot of sun.)

Now, let’s dive into how to judge and compare different solar power generators.

How to choose the best solar generator for you: 6 essentials

To make it onto this list of best solar power generators, each generator had to fulfill a few key requirements. Let’s talk through a few considerations you should think about when you’re choosing the best generator for you.

1. Battery capacity

Battery capacity tells you how many watt-hours of power your generator’s battery canstore. 

Other than the capacity, batteries don’t last forever, so also make sure to look at the expected life span. 

For example, if a generator brand’s website tells you that it’s “800 cycles to 60%,” that means that after you’ve used (“discharged”) and recharged the battery (one full “cycle”) 800 times, you should have about 60% of its “life” left.

🔋 Pro-tip: Most solar generator batteries nowadays no longer use lead acid batteries, but try to avoid them if you see them.

Lead-acid batteries are cheaper, but they don’t last as long—newer types of batteries like lithium ion are better and more compact, so stay away from generators that contain lead acid batteries if you can.

2. Weight

Some generators are more portable and even come with built-in wheels and handles that make it easy to take them with you on trips. 

Other solar generators are meant to act as a backup power source for your house, so they may be a lot heavier and way less mobile.

3. Pass-through charging 

Also referred to as “trickle charging,” if your solar generator has pass-through charging, that means it can itself be charged up while also charging your devices at the same time.

Not all generators can do this, so if you don’t want to wait a whole day or however many hours it takes to recharge your generator before charging your other devices and appliances, then look for this feature.

4. Inverter output

Whether you have a home solar system or a portable solar setup, your solar panels will need an inverter or converter. Why? Because your system will receive solar energy as DC power, but almost all of our appliances and devices use AC power.

Your inverter’s output basically tells you how much power your generator can put out at any given time. You’ll see two numbers for this:

  • Continuous watt rating (sometimes referred to as running watts): The amount of power that the solar generator can consistently produce. It’s pretty simple to determine how many watts of continuous power your generator should have. List out the number of watts per hour that each of your essential devices (say, your fridge and lights) uses. Add them all up, and you’ll see how many continuous watts your generator should support.
  • Surge watt rating: The amount of temporary (usually just a few seconds in length) burst in power that you generator needs to be able to support in order for your bigger appliances to start their electric motors. Look on your appliances to find out how much power they’d need to restart if there’s an outage. Your solar generator should have a surge rating that’s higher than that number.
🔋 Pro-tip: These inverter numbers are important because even if you have a solar generator with a large battery capacity, it doesn’t affect how many devices your generator can charge at the same time.

Why? Because an inverter with a high battery capacity but a low power flow still won’t allow you to charge as many devices simultaneously—and might limit you to low-wattage appliances. It’s like having a huge water supply, but it’s all dammed up and forced to just trickle through bit by bit instead of gushing forth.

5. Regulated output

Not all solar generators have this feature, but we think it’s important to have a regulated 12V port. The reason is because many appliances have a low-voltage cutoff that’ll automatically shut them off if the voltage drops. And that will happen whenever your battery gets used and drained.

Having a regulated 12V port will shield you from this because it regulates the voltage and keeps it steady all the way until your battery is completely drained.

Unless you plan to have your battery plugged in all the time, you’ll need regulated output. Because of this, we had to leave a few popular solar generators off this list. (Apologies to the RENOGY Lycan.)

6. Expandability

For us, the ability to expand your solar generator is important. With some generators, the number you get is the one you’re stuck with.

Others, however, are designed to be modular, which will let you add more capacity later. This flexibility will be very useful in the future if you find that you need to power more appliances or devices.

The 11 best solar generators, from least to most powerful

A few things to note: all of the solar generators in each category of this list use pure sine inverters (hey, these are the best solar generators, after all…), which means that they’ll be able to power any type of device efficiently. 

The alternative, a modified sine inverter, tends to use more power and produce more heat. You won’t see many of these anymore, but if you ever have to choose between a modified sine inverter and pure sine inverter, always choose the latter.

Also, as we mentioned above, having a regulated 12V port is pretty much crucial, so every solar generator on this list will have a regulated output as well. (If they don’t have it, they can hardly be a candidate for “best” solar generator, but that’s just our opinion…)

Lower-capacity solar generators

Not everyone’s going to need to power a big house for a whole week, so let’s start with the best solar generators in order from lowest continuous watts (enough for just the little things during infrequent emergencies).

We’ll get into the most powerful solar generators (that will charge all your basic appliances, for an extended period of time) after.

First, let’s look at some solar power generators that would be a good fit if you’re looking for a recreational or portable “just in case” generator that’ll keep small devices like phones and laptops charged. (Off-grid camping trip, anyone?)

1. Bluetti AC50S 500Wh/300W Portable Power Station

Bluetti AC50S 500Wh-300W Portable Power Station

  • Price: $429.00
  • Battery capacity: 500Wh
  • Continuous watts: 300W / Surge watts: 450W
  • Life span: 800 cycles to 60%
  • Pass-through charging? ✅
  • Holds charge for: 3 to 6 months 
  • Charging options:
    • 5.5 hours via AC wall outlet
    • 15 hours via 12V car adaptor
    • 3 hours via solar panels (if using 200-watt solar panels with full sun)
  • Weight: 13.6 pounds / 6.17kg
  • Dimensions: 11.6 x 7.5 x 7.7 inches (29.5 x 19.1 x 19.6 cm)

Bluettis are one of the most popular solar generators out there, and for good reason. They’re solidly built and have pretty much all the must-have functionality you’d need, including a regulated 12V DC output (music to our ears) and built-in MPPT controller.

The AC50S is a nice upgrade over the AC50, and has pretty good charging times, especially if you’re using solar panels, thanks to that MPPT controller.

There’s also an easy-carry handle and a very handy LED lantern that has a built-in SOS function, which will be better than your cell phone flashlight in an emergency situation.

🔋 Pro-tip: Every solar generator’s website will list out what kinds of devices and appliances it can charge and for how long or how many times. While those are useful, they’re often exaggerated just a bit and should be taken with a grain of salt. 

We’ll list them here because they’re still useful as a guide, but we wouldn’t expect any solar generator to live up to the exact numbers you see in marketing materials.

From the website: What appliances can it charge, and how many times / for how long?

  • An iPhone about 20 to 40 times
  • A laptop about 7 times
  • A CPAP machine for at least 6 hours
  • A 40-watt mini fridge for at least 10 hours

2. Rockpals 330W Portable Power Station

rockpals solar generator

  • Price: $269.90
  • Battery capacity: 289Wh
  • Continuous watts : 330W / Surge watts: 700W
  • Life span: 500 cycles to 80% capacity
  • Pass-through charging? ✅ for DC port
  • Holds charge for: 3 to 6 months
  • Charging options:
  • Weight: 8.8 lbs (4.4 kg)
  • Dimensions: 8 x 6.1 x 6.5 inches (20.32 x 15.49 x 16.76 cm)

Rockpals’ 289Wh power station is small but mighty. It’s a bit odd, with 330 running watts but only a 289Wh capacity, meaning if you tried to use its full power of 330 watts, you’d be able to charge those devices for less than an hour.

Regardless, it’s lightweight and has a built-in SOS LED flashlight that’ll come in handy in case of emergencies. For the price, it’s not bad, but if you need something with a bit more capacity to keep your devices and appliances charged longer, keep reading.

From the website: What appliances can it charge, and how many times / for how long?

  • A laptop for at least 4 hours
  • A 15W humidifier for at least 18 hours

3. Goal Zero Yeti 500X Lithium Portable Power Station

Goal Zero Yeti 500X Lithium Portable Power Station

  • Price: $699.95
  • Battery capacity: 505Wh
  • Continuous watts : 300W / Surge watts: 1200W
  • Life span: 500 cycles to 80% capacity
  • Pass-through charging? ✅
  • Holds charge for: 3 to 6 months 
  • Charging options: 
    • 8.5 hours via AC wall outlet
    • 4 to 7 hours via 12V car adaptor—but you have to use the Goal Zero Yeti Lithium 12V Car Charging Cable (otherwise you might damage the generator)
    • 6 to 12 hours via Boulder 100 solar panels (max 180W)
  • Weight: 12.9 lbs (5.85 kg)
  • Dimensions: 7.5 x 11.25 x 5.8 inches (19.05 x 28.58 x 14.73 cm)
🔋 Pro-tip: If you want to charge your generator with solar panels, remember that typically, solar panels produce anywhere from 60 to maybe 80% of their listed capacities. That means a 200-watt panel won’t actually produce 200 watts of power—it might be closer to 125-150 watts. 

The Goal Zero Yeti 500x is a huge improvement over the previous iterations of the Yeti power stations. It’s more powerful and also much lighter—perfectly portable and a great option for short trips off the grid.

Goal Zero is one of the most popular brands in producing portable solar power panels, generators, and accessories. The thing with a brand like Goal Zero, of course, is that it’s better to use their own solar panels and charging cables, which you’d have to buy separately. 

(See the car charging cable note above, and there’s even a special wall charging cable that can halve the regular 8.5 hour charging time.)

The other big difference that stands out off the bat is the difference in price. For almost the same inverter output and battery capacity, the Bluetti AC50S is over $200 cheaper in comparison.

One nice thing about the Yeti 500X is that when you leave it plugged in, it’ll charge to 100%, automatically stop charging, and slowly drain down until it gets to about 89%. Then once it hits 89%, it’ll start charging again until it gets back up to 100%. It’s a clever design that makes sure the battery always has some level of activity when plugged in and doesn’t go cold for too long.

To maximize the battery’s lifespan, Goal Zero also recommends draining the Yeti 500X down to 50% or more at least four times a year. 

From the website: What appliances can it charge, and how many times / for how long?

  • A smartphone at least 40 times
  • A 65W CPAP machine for at least 8 hours
  • A 25W mini-fridge for at least 20 hours

4. Jackery Explorer 500

jackery explorer 500 solar generator

  • Price: $599
  • Battery capacity: 518Wh
  • Continuous watts : 500W / Surge watts: 1000W
  • Life span: 500 cycles to 80%
  • Pass-through charging? ✅
  • Holds charge for: 3 to 6 months
  • Charging options:
    • 7.5 hours via AC wall outlet
    • 16 hours via 12V car adaptor
    • 9.5 hour via the SolarSaga 100 solar panel (max 65W)
  • Weight: 13.3 pounds / 6kg
  • Dimensions: 11.8 x 7.6 x 9.2 inches (30.1 x 19.3 x 24.2 cm)

Like Goal Zero, Jackery is one of the more popular names when it comes to solar generators and portable solar panels. (Learn more about portable solar panels here.)

The Explorer 500 is a solid option in the low-to-mid capacity range of solar power generators with a built-in MPPT controller for more efficient charging via solar panels (which, you guessed it, Jackery makes).

It has all the usual suspects when it comes to portable solar generator features, like a carrying handle and a big LCD display that shows you the numerical percentage for how much battery you have left. (From personal experience, it’s better to be able to see an actual number or a percentage as opposed to just an icon that has a few notches that get lit up.)

🔋 Pro-tip: Remember, when you’re choosing a solar power generator, the key is to choose something that’ll keep your essential appliances running while you wait to get sunlight again to recharge your batteries. To be on the safe side, we’d give ourselves enough battery capacity for at least two days. (If you tend to have a pretty full fridge and freezer, then you probably don’t want all that food to go bad!)

There’s also a quick-charge USB-C port, though it takes a while to recharge itself.

Otherwise, it’s pretty comparable to the Bluetti AC50S and Yeti 500X if you’re comparing battery life cycles it’ll last for, and is right between the two in terms of the price point.

From the website: What appliances can it charge, and how many times / for how long?

  • An iPhone about 53 times
  • A CPAP machine for 13 to 40 hours
  • A 60-watt mini fridge for at least 37 hours

Disclaimer: This article contains affiliate links through which we may receive a small commission at no cost to you, if you choose to purchase anything from a link on this page. That being said, these tools were curated from extensive research and consideration of reviews of the best options we’ve found.

5. Suaoki S670 Portable Power Station

Suaoki S670 Portable Power Station

  • Price: $746.99
  • Battery capacity: 720Wh
  • Continuous watts : 500W / Surge watts: 1000W
  • Life span: Unknown
  • Pass-through charging? ❌
  • Holds charge for: 3 to 6 months
  • Charging options:
    • 5 to 6 hours via AC wall outlet
    • 7 to 8 hours via 12V car adaptor
    • 8 hours via solar panels (max 168W)
  • Weight: 17.3 pounds / 7.85kg
  • Dimensions: 13.8 x 8.5 x 6.6 inches

Now, we’re continuing into the 500Wh-ish solar generator category. The Suaoki has the requisite built-in MPPT controller, of course—but what’s a little unusual is that it even has an MC4 solar charging cable. 

That’s nice of them, as not all solar generators come with this cable because the company wants you to buy their own branded solar panels (understandable) instead. 

That being said, Suaoki still recommends that you charge the power station with its own branded solar panels in order to get “the longest run time.”

You don’t have to, though. With the included MC4 cable, you’d be able to plug different brands of solar panels into the Suaoki no problem. It’s also designed with emergency situations in mind, with a bright LED flashlight that has an SOS setting, which makes it a decently robust generator for power outages and longer off-grid trips.

With all these features, it’s still quite portable and relatively light at 17 pounds, even if it’s about four pounds heavier than the Yeti 500X and Jackery Explorer 500. 

Regardless, it does have a convenient handle that lets you take it camping or travelling without too much hassle.

The big negative for us, though is that there’s no pass-through charging, which means you’d have to wait until the generator is done charging before you can use it to charge other devices.

From the website: What appliances can it charge, and how many times / for how long?

  • An iPhone about 57 times
  • A CPAP machine for at least 38 hours
  • A mini-fridge for about 11 hours

Mid-size solar generators: Top 3

These are solar generators with a bit more juice that can keep your lights on and most of your appliances running—yes, even the fridge—for a few hours. Unless you have an extravagantly outfitted household, these generators will do fine as a backup, and can even be the main backup power source for a tiny house when the sun is away.

1. EcoFlow DELTA 1300 Portable Power Station

ecoflow delta 1300 solar generator

  • Price: $1,300
  • Battery capacity: 1260Wh
  • Continuous watts: 1800W / Surge watts: 3300W
  • Life span: 800 cycles to 60%
  • Pass-through charging? ✅
  • Holds charge for: 1 year after fully charged 
  • Charging options:
    • 1.6 hours via AC wall outlet
    • 10 to 12 hours via 12V car adaptor
    • 4 hours via solar panels (max 400W, if using four 110-watt solar panels with full sun)
  • Weight: 30.9 pounds / 14kg
  • Dimensions: 15.7 x 8.3 x 10.6 inches (40 x 21 x 27 cm) 

The EcoFlow DELTA 1300 is a good mid-size option if you need a solar generator to keep your home powered for hours, or even days. 

And the big reason that it’s often sold out is because of its epic charging speed. Compared to every other solar power generator out there, the DELTA charges in a significantly shorter time. Whereas many generators take at least half a day to charge fully, this solar generator can charge in less than two hours with a wall outlet. That is huge, especially if you don’t want to wait to charge your devices (like us).

If you don’t happen to have an AC outlet nearby, you can always charge the DELTA 1300 with solar power, but again, if you do have the luxury of an AC outlet, then you’ll be able to charge it much more quickly—up to 80% full within an hour.

A big plus for some folks who have a lot of things to charge simultaneously is the ability to recharge 13 devices at the same time. This makes it a good option for families—or just people with a lot of gadgets. (Though we don’t know any one person who owns 13 devices that would need to be charged at the same time.) 

Not only can it power anything in your home, EcoFlow also helpfully suggests that you can use the DELTA 1300 as an emergency backup power source for your electric car (it can give you up to 7.5 extra miles of runway, which admittedly isn’t a lot, but it might just come in handy if you’re driving and find yourself close to your destination—but just not close enough).

Oh, and it doesn’t look half bad either.

From the website: What appliances can it charge, and how many times / for how long?

  • A phone about 100 times
  • A laptop for at least 16 hours
  • A 40-watt CPAP machine for 18 to 22 hours
  • A 150-watt fridge for 7 to 10 hours

Disclaimer: This article contains affiliate links through which we may receive a small commission at no cost to you, if you choose to purchase anything from a link on this page. That being said, these tools were curated from extensive research and consideration of reviews of the best options we’ve found.

2. Jackery Solar Generator 1000 (with 2 SolarSaga 100W solar panels)

jackery explorer 300 power station

  • Price: $1,599.97
  • Battery capacity: 1002Wh
  • Continuous watts : 1000W / Surge watts: 2000W
  • Life span: 500 cycles to 80%
  • Pass-through charging? ✅
  • Holds charge for: 3 to 6 months
  • Charging options:
    • 7 hours via AC wall outlet
    • 14 hours via 12V car adaptor
    • 8 hours via the 2 SolarSaga 100W solar panels + adapter cable (all included in this package)
  • Weight: 22.04 pounds / 10kg
  • Dimensions: 13.1 x 9.2 x 11.1 inches (33.3 x 23.3 x 28.3 cm)

This Jackery 1000 package is about $300 more expensive than the EcoFlow DELTA 1300, but we thought it was worth including to demonstrate a possible price point for something that comes with two 100-watt solar panels included.

Like most of the better solar generators in this range, you’ll find no shortage of ports, with three AC ports, two USB-C ports, two regular USB ports, and a DC port.

It doesn’t charge anywhere near as quickly as the EcoFlow DELTA 1300, and the running watts are also quite a bit lower (1000 compared to 1800) as well.

So why would you go with the Jackery? Well, if you’ve done any browsing online of EcoFlow, the biggest complaint they get is probably about their customer service. If you care about having that peace of mind, then it might be good to hold off for a bit until they improve their customer service, or go with Jackery or one of the other options here.

The Jackery 1000 doesn’t match up that terribly in comparison to the DELTA 1300, as the battery capacity and running wattage are very similar, and it has everything else that you’d need like a regulated 12V port, a carrying handle, and a convenient LCD screen that shows info like inputs, outpus, and remaining run time.

From the website: What appliances can it charge, and how many times / for how long?

  • An iPhone about 100 times
  • A CPAP machine for 55 to 78 hours
  • A 60-watt fridge for at least 66 hours

3. Bluetti EB240 2400Wh/1000W Portable Power Station

Bluetti EB240 2400Wh:1000W Portable Power Station

  • Price: $1,899.99
  • Battery capacity: 2400Wh
  • Continuous watts: 1000W / Surge watts: 1200W
  • Life span: 2500 cycles, percentage remaining unknown
  • Pass-through charging? ✅
  • Holds charge for: Unknown
  • Charging options:
    • 12 hours via AC wall outlet
    • 12V car charger – Time unknown
    • 15 hours via 200W solar panels under full sun (max 500 watts)
  • Weight: 48.5 pounds / 22kg
  • Dimensions: 19.4 x 6.5 x 14.4 inches (49.2 x 16.5 x 36.6 cm)

Out of the more popular solar power generators in this range, the Bluetti EB240 has the highest battery capacity. And this is going to be what you’re paying for, as it’s a few hundred bucks more expensive than the other two generators in this category.

Even so, it’s important to note that in terms of running or continuous watts, it’s still comparable to those generators, which means you can’t make too demanding of a power draw on it, but you can keep more small devices or appliances charged for a longer period of time.

It’s also hard to find out what the lifespan is exactly—the smaller Bluetti has a percentage listed, but the only information Bluetti has provided for the EB240 is that it’ll last for at least 2500 cycles. The percentage of battery life that you’re left with, though, is unknown.

On the plus side, like the other new Bluetti solar generators, it has a built-in MPPT controller that lets you recharge more quickly with solar panels.

From the website: What appliances can it charge, and how many times / for how long?

  • A smartphone at least 200 times
  • A laptop at least 32 times 
  • A CPAP machine for at least 32 hours
  • A 60-watt fridge for at least 32 hours (This one was a bit weird because they listed the fridge on their website as “An 800-watt refrigerator for at least 2.4  hours, which is way more watts than any fridge we’ve seen, so we took their 60-watt appliance number and used it as a stand-in for a fridge)

Most powerful solar generators: Top 3

Sometimes, you just need a solar generator that’ll be able to power your whole house. You don’t want to compromise on any of your electronics or appliances in case the power goes out. We’re talking fridges, freezers, TVs… for stretches of up to a week at a time.

1. Goal Zero Yeti 3000X Portable Power Station

Goal Zero Yeti 3000X Portable Power Station

  • Price: $3,199.95
  • Battery capacity: 3032Wh
  • Continuous watts : 2500W / Surge watts: 3500W
  • Life span: 500 cycles to 80%
  • Pass-through charging? ✅
  • Holds charge for: 3 to 6 months
  • Charging options:
    • 14 hours via AC wall outlet
    • 12V car adaptor – Time unknown
    • 6 hours via 6 of Goal Zero’s Boulder 200 solar panels (max 600w)
  • Weight: 69.78 pounds (31.65 kg)
  • Dimensions: 15.25 x 10.23 x 13.6 inches (38.74 x 25.98 x 34.54 cm)

Goal Zero made a very prudent choice and added not only a MPPT controller (which is an upgrade over the old PWM), but also a regulated 12V port to its Yetis (the non-X series models did not have this feature). For this reason, they’ve made the list of the best powerful solar generators.

For a generator with such a high battery capacity, the integrated MPPT charge controller is especially handy because it makes sure you’re getting the most efficient charge from your solar panels as you can. 

You’ve got a large battery to charge, after all. One thing to note though is that the MPPT controller that’s built in will allow only up to 360 watts. But! You could have an extra 360 watts—if you get the MPPT Expansion Module.

You can also use the handy Goal Yeti App to keep track of your solar generator. It makes it easy to monitor and control the Yeti, but it’s not a make-or-break since you have the screen on the generator telling you most of the important information anyway.

For a solar generator of this size, you also have a decent number of ports selection. There are multiple inputs (which is great if you have solar and grid power), plus a slew of outputs like AC, USB, and a 12 volt cigarette port.

From the website: What appliances can it charge, and how many times / for how long?

  • A 25Wh portable cooler/fridge for at least 122 hours
  • A 55Wh full size fridge for 55 hours
  • A CPAP machine for at least 47 hours

2. Inergy FLEX 1500 Power Station

Inergy FLEX 1500 Power Station

  • Price: $1,500.00
  • Battery capacity: 1069Wh
  • Continuous watts: 1500W / Surge watts: 3000W
  • Life span: Unknown – “Your FLEX Battery could last anywhere from 400 cycles up to 2,000 cycles or 10 years if you use it to run moderate loads and take good care of it.”
  • Pass-through charging? ✅
  • Holds charge for: Unknown 
  • Charging options:
    • 5 hours via AC quick-charge wall outlet (11 hours via regular wall charger)
    • 11 hours via 12V car adaptor
    • 3.5 hours via solar panels (max 600W—to charge even faster through solar, you can buy the FLEX MPPT Supercharger, which triples the standard solar charge input and reduces charge time to 1 hour)
  • Weight: 26 pounds / xkg
  • Dimensions: 14 x 8 x 8.9 inches (x)

One of the biggest perks of the FLEX 1500 is that it’s expandable—up to a whopping 96 batteries—which is good because the built-in capacity isn’t that big. But that also means that if you get the FLEX, it’ll pretty much scale with your family and adapt to however much your energy needs will grow in the future.

The FLEX Power Station is comprised of two parts: the FLEX 1500 Power Console and a FLEX battery. They’re easy to hook up—all you have to do is line up the connectors between the console and the battery, and it’ll auto-lock right in. (This is how you can add more batteries to the stack as well.)

One neat thing about the way the FLEX is designed is that its built-in MPPT controller will charge each FLEX battery you have stacked—at the same time. Inergy claims that one battery will charge in about 3.5 hours, which is pretty good.

Also, you can charge the FLEX using all three different charging options (AC wall outlet, DC car charger, solar panels) at the same time to speed up the charging process even more.

From the website: What appliances can it charge, and how many times / for how long?

  • A smartphone 125 times
  • A laptop 20 times
  • A portable fridge for 22 hours
  • A CPAP machine for at least 20 hours

3. Point Zero Energy’s Titan Solar Generator

Point Zero Energy's Titan Solar Generator

  • Price: $2,995.00
  • Battery capacity: 2000Wh
  • Continuous watts : 3000W / Surge watts: 6000W
  • Life span: 2000 cycles, or 10 years
  • Pass-through charging? ✅
  • Holds charge for: Up to 5 years
  • Charging options:
    • 4 hours via AC wall outlet
    • 12V car adaptor: x hours
    • Solar panels: x hours (max 2000W)
  • Weight: 75 pounds / 34kg (Including battery)
  • Dimensions: 18.5 x 12 x 12 inches (Including battery)

The Titan is (deservingly) one of the names that comes up most often when people talk about high-powered solar generators.

One of the Titan’s biggest perks is that it’s expandable. If you want flexibility, then you’ll be happy to know that it’s modular, which means that even though it comes with one battery, you can always add more. 

It’s easy to expand it as well—just stack the batteries and flip the latches to secure them.

With this much capacity, it’s not surprising that the Titan is not a portable solar generator—meaning you’re not going to be taking this on any RV trips. 

It’s heavy and designed with a welded steel frame, which means it’s probably best used as a backup for your home. (And yes, it can run a full-size fridge. Point Zero claims it’ll run a full-size fridge for about 30 hours, which is pretty impressive if true.)

Oh yeah, it also has dual built-in MPPT charge controllers, which means you can charge the Titan hyper-efficiently with solar panels. (You can push a maximum of 2,000 watts, so it’ll charge relatively quickly.)

You can power pretty much everything in your home from your kitchen appliances to your lights and computers. 

From the website: What appliances can it charge, and how many times / for how long?

None listed—which is probably because Point Zero knows these listed numbers don’t mean much and can vary in real-life scenarios depending on, say, how much sunlight you have while charging the generator with solar panels or how many devices you have plugged in. Given the Titan’s large battery capacity and huge inverter size (which tops the three generators in this list, by the way), you’re fine to charge anything you’d charge with the Yeti 3000X and Inergy FLEX—and then some.

Solar power generator buying guide: FAQs

Want to dig a little deeper into the nuances of choosing the best solar generator for you? Take a look through these questions to make decisions on things like whether a portable solar power generator will be enough and why you shouldn’t just buy the biggest generator you can find.

How much power do you need?

When they debate between different solar generators, most people think first about what appliances they’ll need to keep running and for how many hours or days at a time.

Basically, how long—potentially—would your home go without sunlight? Now, if you live somewhere like Arizona, this won’t likely be a problem. But if you live somewhere that’s very dark for long stretches of time (say, Finland in the winter), then you’ll need something that packs a lot more juice. 

Most portable solar powered generators are very lightweight but this often goes hand in hand with low power output compared to inverter generators and conventional portable generators. First calculate how much power you need by checking the power consumption of all the devices you wish to power with the generator.

Choose a generator with a higher battery capacity and higher power output than what you need. There are minor inefficiencies in even the best solar generators, so assume an efficiency of 80 to 90% when you’re estimating how much power you’ll need from a solar generator. 

Does the portable power station include a solar panel?

Don’t assume that every solar power generator comes with solar panels. Some brands, like Jackery and Goal Zero, do make solar panels as well that will integrate perfectly with your power station or generator without other adaptors or cables—but not all do.

We’ve made a note above of which generators come as a package with solar panels or have those options for you to choose from.

What makes solar generators better than gas generators?

We’ll keep it short: they’re quieter, they don’t emit harmful fumes, and they’re safer—especially if you plan to keep them indoors.

How do solar generators work?

Solar generators are basically huge batteries that can power anything from small devices like phones to big kitchen appliances like full-size fridges. 

Each solar generator has a few key elements:

  • An inverter: This converts power from your battery into AC, which is the type of current you need to power most household appliances.
  • A battery: This stores the power, and you’ll need to choose a battery size that’s just a bit bigger than your appliances’ requirements in order to compensate for those little unavoidable inefficiencies.
  • Solar panels: Not a must-have, but if you want to charge your generator with sunlight, you’ll need to buy these separately. Remember, some solar generators have a maximum wattage input via solar panels, which means you shouldn’t just get the biggest solar panels out there.

    For example, if your generator has a maximum 300-watt input from solar, then there’s no point getting a 600-watt solar panel setup because only 300 watts can flow into your generator at any given time. (It won’t charge any faster just because you have a more powerful solar panel.)
  • An MPPT controller: A must-have, in our opinion, if you plan to charge your generator with solar because it gives you an efficiency boost.

What size solar generator do I need?

To figure out how many watts of continuous power and surge power your generator needs to have, add up the total number of watt-hours your must-use appliances use and multiply that number by how many hours a day you’ll need them to run.

For any appliances that have a motor, like a refrigerator, note down the surge wattage too. 

Now, to find the maximum surge wattage your generator should have, you don’t just add up the surge wattages for all your appliances. You only need to add all of the running or continuous wattages, and the surge wattage of the biggest (or most demanding) appliance. Why?

Because an appliance will only need that burst of power when it starts up. That typically lasts only a couple of seconds, and it’s highly unlikely that you’ll be starting up all of your appliances at the same time. So, to find the maximum, remember: you only need the continuous watts for all of your appliances excluding your most energy-hungry appliance, plus the surge wattage for that appliance.

Why don’t I just get the biggest battery capacity?

Remember that solar generators run on stored energy. A system can have enough panels to make a thousand of watts of energy, but if the battery stores only 500 watts, that’s the most power you’ll have without adding more capacity.

Most portable generator components are sized to maximize the capacity of each for the sake of efficiency. Expanding one component usually means you’ll have to upgrade others, but the important part is that better systems can be expanded to meet changing needs.

What’s the significance of having an MPPT charge controller built into your solar power generator?

An MPPT, or Maximum Power Point Tracking, charge controller basically keeps your solar power system operating at maximum efficiency. 

A solar generator that has a built-in MPPT controller allows you to produce electricity more efficiently from your solar panel. Basically, it’s a good thing to have and the best solar power generator should have it.

What are other useful features should I look for in a solar generator?

Other than the usual battery and power capacities, there are a few other things to keep in mind when you’re looking for the best solar generator for you:

  • Does it have fast-charging USB-C ports?
  • Is it easy to move around? (If you want a portable solar generator, wheels and either luggage-style handles or easy-carry handles are pretty much a must.)
  • Is it modular or scalable? Can you expand the system in case you need to charge more appliances or devices in the future?
  • Will you need multiple AC outlets?
  • How easy is it to replace the battery?
  • Does the screen show you exactly numbers and percentages for how much battery life is left and charging times—or just vague icons or charts?

Can a solar generator power a house?

Some can, but not all. You’d need something with a huge battery capacity and a relatively high inverter output so that it can power multiple appliances and devices at the same time. For us, we’d look only at options that are 2,000Wh (at the very least) and above.

What is the most powerful solar generator?

On this list, the most powerful solar power generator is the Point Zero Titan. Of course, there may be other solar generators with even higher battery capacities and inverter outputs, but they may not have features that we’d consider essential—like a regulated 12V port, for instance.

What is the best solar generator to buy?

Although there’s no one “best” solar generator for everybody, there are a few things that you can put on your checklist to make sure you’re at least choosing one that’s generally good.

Make sure its capacity and inverter output are both higher than what you need—most advertised numbers aren’t realistic and are derived from “ideal” testing scenarios that would almost never happen in real life, so take those with a grain of salt.

Don’t forget to check that there’s a regulated 12V port so that your generator will power your devices efficiently even when the battery is low.

And of course, it’s always a good idea to choose a solar powered generator from a company that gets good reviews overall and has been around. An impressive warranty won’t do you much good if the company isn’t around in a few years!

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