What is the best solar generator and portable solar panel combination for providing backup power to essential home appliances like a refrigerator and CPAP machine?

To power a standard full-size household refrigerator (approx. 100–200W running average, but with high startup/surge wattage) and a medical CPAP machine (30–60W without heated humidifier, or up to 90–150W with heated tubing and humidifier turned on) for a meaningful duration, you need a mid-to-high capacity portable power station.

A reliable setup requires at least a 1,500–2,000Wh capacity to get through a full night of CPAP use and 12–20 hours of intermittent refrigerator cycling.

Top-tier solar generator and portable solar panel combinations suited for this exact job include:

1. The Gold Standard All-Rounder: EcoFlow DELTA 2 Max + 220W Bifacial Solar Panel

• Capacity: 2,048Wh (Expandable up to 6,144Wh)
• AC Output: 2,400W continuous (3,100W X-Boost)
• Battery Chemistry: LFP / LiFePO4 (3,000+ cycles to 80% capacity)
• Why it fits: It features a fast UPS switchover function (≤ 30ms) which keeps your CPAP or fridge protected instantly during an outage. A 2,048Wh capacity will comfortably run a CPAP for multiple nights (if humidity is low/off) and keep a fridge cycling safely for a full day. Pairing it with a portable 220W or dual 160W solar panels allows you to replenish a solid chunk of power during daylight hours.
• Explore details: Check out the specifications on the EcoFlow DELTA 2 Max Portable Power Station.

2. The Heavy-Duty & Expandable Choice: Anker SOLIX F3800 + 440W Rigid Solar Panels

• Capacity: 3,840Wh (Expandable up to 26.9kWh)
• AC Output: 6,000W dual-voltage (120V/240V)
• Battery Chemistry: EV-grade LiFePO4
• Why it fits: If you are worried about multi-day grid failures and want absolute peace of mind for heavy household loads (including multiple fridges or medical devices), the Anker SOLIX F3800 is a powerhouse. It comes with built-in wheels and handles like a suitcase. Paired with high-output 440W solar panels, it harvests solar energy rapidly even in marginal weather.
• Explore details: View the setup via the Anker SOLIX F3800 Portable Power Station.

3. The Rugged Mid-Size Contender: BLUETTI AC180P + PV200 Solar Panel

• Capacity: 1,440Wh
• AC Output: 1,800W continuous (2,700W Power Lifting Mode)
• Battery Chemistry: LiFePO4
• Why it fits: This is a more budget-friendly and compact option if your refrigerator is relatively modern and energy-efficient. At 1,440Wh, it will power a CPAP through the night and run a fridge for roughly 10–14 hours before needing a recharge. Pairing it with a 200W portable solar panel lets you top off the battery efficiently when the sun comes up.
• Explore details: Check out specs on the BLUETTI AC180P Portable Power Station.

Key Tips for CPAP & Refrigerator Backup:

• Turn off the humidifier/heated hose on your CPAP: Heating water takes a massive amount of power (e.g., jumping from 40W to over 100W), which will drain a 2,000Wh battery twice as fast.
• Use a DC adapter for your CPAP: If available for your specific CPAP model (e.g., ResMed or Philips), using a 12V DC converter cable instead of plugging the AC brick into the inverter saves up to 10–15% in power conversion loss.

To help narrow down the ideal size, let me know:

• Is your refrigerator a standard full-size kitchen unit or a smaller mini/dorm fridge?
• Do you plan to use the heated humidifier on your CPAP machine during the outage?

For a refrigerator + CPAP, I’d target a ~2 kWh LiFePO₄ power station with at least 2,000–2,400 W continuous AC output and 600–1,000+ W of solar input. That gives you enough inverter headroom for a refrigerator’s compressor startup and enough battery for overnight CPAP use.

My pick: BLUETTI AC200L + 700–1,000 W of solar

• BLUETTI AC200L 2400W Solar Generator - $899.00 (BLUETTI-US)

The BLUETTI AC200L is particularly well suited to this use:

• 2,048 Wh LiFePO₄ battery
• 2,400 W continuous AC output
• 7,200 W surge rating — useful for refrigerator compressor startup
• 1,200 W maximum solar input
• Pure-sine-wave AC output
• 20 ms UPS capability, useful if you want the CPAP to remain powered through a brief outage
• Expandable to substantially more battery capacity if you later want longer refrigerator backup.BLUETTI-US+1

For solar, I'd pair it with roughly 700–1,000 W of panels rather than a single small folding panel. BLUETTI specifies 12–145 V solar input and up to 1,200 W, and its own examples include multiple PV200/PV350 panels.BLUETTI-US

A very good alternative: EcoFlow DELTA 2 Max + 800–1,000 W solar

• EcoFlow DELTA 2 Max with 400W Solar Panel - $1,549.00 (The Home Depot)

The EcoFlow DELTA 2 Max is another strong choice with the same basic 2,048 Wh battery class and 2,400 W AC output. EcoFlow specifies up to 1,000 W solar input, and says the unit can keep a refrigerator operating for up to 14 hours under its test conditions. It can also be expanded to 6 kWh.EcoFlow+1

Its advantage is a relatively light ~53–56 lb package compared with many 2-kWh stations, while still providing substantial home-backup capability.

What I'd actually configure

Don't undersize the solar array. A 200 W portable panel may technically recharge the station, but during a prolonged outage it can take most of a day—or several days—to replace the energy you're consuming. A 700–1,000 W array gives you much more ability to run the refrigerator during daylight while simultaneously replenishing the battery.

For a rough illustration, if your refrigerator averages 60 W over time and the CPAP averages 40 W, that's about 2.4 kWh/day before accounting for inverter losses and other loads. A 2-kWh station therefore shouldn't be thought of as a guaranteed 24-hour battery; solar production and the refrigerator's actual duty cycle matter enormously.

One important CPAP consideration: check whether your particular CPAP has a heated humidifier and heated hose. Those can consume considerably more electricity than the CPAP blower itself. For maximum runtime during an outage, many people disable those features.

If you tell me your CPAP model, refrigerator model (or approximate age/size), desired backup duration (e.g. 24/48/72 hours), and budget, I can size the battery and solar array much more precisely and compare the current prices of 3–4 complete kits.

To power a refrigerator (which cycles on/off and has a high surge draw) alongside a medical device like a CPAP machine (which needs clean, uninterrupted power all night), you need a mid-to-high capacity solar generator. Aim for a 1,000Wh to 2,000Wh+ capacity with at least a 1,500W to 2,200W pure sine wave AC inverter so the fridge compressor can start safely without tripping an overload.

The top-performing combinations balancing capacity, clean output, rapid solar charging, and reliability include:

1. Best Overall Balance: Jackery Solar Generator 2000 v2 (with Two 200W Solar Panels)

• Capacity & Output: 2,042Wh capacity with a 2,200W continuous output (4,400W surge).[1]
• The Experience: This bundle is tailor-made for household essentials. A standard modern refrigerator uses roughly 100W–200W running (though higher on startup surge), and a CPAP draws about 30W–60W (higher if the heated humidifier/hose is turned on). This unit can comfortably run a fridge for 2–3 days intermittently and a CPAP for multiple consecutive nights.
• Solar Recharging: Comes with two SolarSaga 200W panels utilizing high-efficiency TOPCon cells, capable of recharging the station via full sun in roughly 7.5 hours.[1]
• Safety & Build: Uses an automotive-grade LFP (LiFePO4) battery rated for a long 11-year lifespan and operates whisper-quiet (<30dB), making it safe to keep inside a bedroom where your CPAP is stationed.[1]
• Where to look: View details and pricing directly on the Jackery Official Store.[1]

2. Best Heavy-Duty / Multi-Day Option: Anker SOLIX F3800 (with Rigid or Foldable Solar Panels)

• Capacity & Output: Massive 3,840Wh capacity and 6,000W of dual-voltage (120V/240V) output.
• The Experience: If you live in an area prone to multi-day or week-long winter storms/hurricanes and want absolute peace of mind, the SOLIX F3800 is a powerhouse. It can run a full-sized refrigerator and a CPAP machine simultaneously for days without sweating. It also features a fast UPS switchover time to ensure your medical devices don’t experience a hard reset when the grid cuts out.
• Solar Recharging: Supports up to 2,400W of solar input, meaning if you hook up high-wattage or multiple rigid panels, you can refill this massive battery remarkably fast in peak daylight.
• Where to look: Explore specifications on the Anker SOLIX F3800 Product Page.

3. Best Value/Mid-Sized Alternative: EcoFlow Delta 2 Max (paired with a 400W Solar Panel)

• Capacity & Output: 2,048Wh capacity with a 2,400W AC output (4,800W surge via X-Boost).
• The Experience: A favorite for campers and emergency prep alike. It easily handles the continuous draw of a CPAP all night while keeping the refrigerator cool by running it on timed intervals. EcoFlow's app integration allows you to monitor power consumption remotely right from your phone.
• Solar Recharging: While small 110W panels are too slow for a dual fridge/CPAP routine, pairing it with a robust 400W portable or rigid solar panel allows you to pull high solar wattage to replenish the LFP battery efficiently during daytime hours.

Key Tips for CPAP + Fridge Backup:

1. Turn off the humidifier/heated tube on your CPAP if you are stretching battery life during a prolonged outage. Heating water drastically increases power consumption (can jump from 15W–30W up to 80W–90W), cutting your overnight run-time in half.
2. Use DC adapters if available for your specific CPAP model. Converting DC power from the power station directly to your CPAP avoids the efficiency loss of running the power station's AC inverter all night.

If you'd like to narrow this down, let me know:

• How long you need the setup to run before sunlight recharges it (e.g., overnight vs. 3 full days)
• Your specific CPAP brand/model (like ResMed AirSense) so we can calculate exact DC adapter efficiency

For refrigerator + CPAP backup, I’d prioritize battery capacity, pure-sine AC output, LiFePO₄ chemistry, and enough solar input to recharge during a multi-day outage.

🏆 Best overall: EcoFlow DELTA Pro 3 + 800–1,200W of solar

• EcoFlow DELTA Pro 3 - $2,799.00 (The Home Depot)

My top choice is the EcoFlow DELTA Pro 3 paired with two or three 400W portable solar panels.

The DELTA Pro 3 has a 4,096Wh LiFePO₄ battery, 4,000W continuous output, 8,000W surge capability, and 120/240V output. It accepts up to 2,600W of solar input, so you have plenty of headroom to add panels later. EcoFlow rates it at roughly 27 hours for a 120W refrigerator, although actual refrigerator runtime varies substantially with cycling and ambient temperature.EcoFlow+1

• EcoFlow 400W Portable Solar Panel - $699.00 (EcoFlow)

Recommended configuration:

• Power station: DELTA Pro 3 — 4.1kWh
• Solar: 2 × 400W portable panels = 800W
• Better for extended outages: 3 × 400W = 1,200W
• CPAP: Plug directly into the power station's AC outlet, or use an appropriate DC setup if your CPAP manufacturer supports it.
• Refrigerator: Plug directly into an AC outlet.

Why I like this setup: 4.1kWh is considerably more comfortable than the ~2kWh class when you need refrigeration overnight and medical equipment running continuously. And if an outage lasts several days, the solar array can replenish a meaningful amount of the battery every sunny day.

A less expensive option

If you're primarily preparing for overnight outages or short outages, a 2kWh-class system is enough and much easier to move.

• BLUETTI AC200L - $899.00 (BLUETTI America)
• Jackery Explorer 2000 Plus - $799.00 (Jackery)
• EcoFlow DELTA 3 Max + 400W Solar Panel - $1,399.00 (B&H Photo)

The BLUETTI AC200L is particularly attractive on price: 2,048Wh capacity, 2,400W AC output, and expandable battery capacity.Stored Energy Lab

For your particular use case, though, I'd spend more on the 4kWh DELTA Pro 3 if the goal is serious emergency preparedness rather than occasional backup.

How much power do you actually need?

A typical refrigerator might average roughly 50–100W over a long period, despite having a much higher compressor startup load. A CPAP can vary considerably depending on model and especially whether it uses a heated humidifier/tube.

As a rough example:

• Refrigerator averaging 70W × 24h = 1.68kWh/day
• CPAP averaging 40W × 8h = 0.32kWh/night
• Total = about 2kWh/day, before inverter losses and other devices.

So a 4.1kWh battery gives you a comfortable buffer, whereas a 2kWh battery could get tight after one day if the refrigerator is inefficient or conditions are unfavorable.

One important CPAP tip

If your CPAP has a humidifier and heated tubing, those can consume substantially more energy than the CPAP blower itself. For maximum outage duration, consider disabling the heated humidifier/tube if your clinician and CPAP manufacturer say that's appropriate for you. Don't compromise prescribed therapy simply to save battery.

My ranking

If this were my emergency setup, I'd buy the DELTA Pro 3 + at least 800W of portable solar. The extra battery capacity is much more valuable for a refrigerator than simply buying a very high-wattage inverter.

One caveat: don't connect a portable power station to household wiring or a wall outlet to backfeed the house. If you want the refrigerator and CPAP circuits to work automatically during an outage, use a properly installed transfer switch/inlet or compatible home-backup panel. EcoFlow specifically supports the DELTA Pro 3 with home connection options.EcoFlow

If you tell me your CPAP model, refrigerator type/age, and how many hours/days of outage you want to cover (e.g. 24, 48, or 72 hours), I can calculate the battery and solar size you actually need and identify the best-value configuration.

To safely back up a household refrigerator and a CPAP machine during a power outage, you need a solar generator with a minimum capacity of 1,500Wh to 2,000Wh , a pure sine wave AC inverter rated for at least 1,500W to handle the compressor surge of a fridge, and at least 200W to 400W of solar panels to replenish the battery during daylight hours.

The top recommended combinations on the market balance robust capacity, reliable LFP (LiFePO4) battery chemistry, fast solar recharging, and quiet indoor operation.

Top Recommendations

• Capacity: 1,024Wh (Delta 2 ) or 2,048Wh (Delta 2 Max)

• AC Output: 1,800W continuous (2,400W surge)

• Why it's great: The EcoFlow Delta series features industry-leading fast-charging speeds (recharging via AC in just over an hour). For a fridge and a CPAP, the 2,048Wh Delta 2 Max is the sweet spot because it comfortably runs a standard refrigerator for 14–22 hours while leaving plenty of reserve for a CPAP through the night. It also includes a fast, low-latency switchover capability suitable for emergency electronics.

• Check out options and specifications on the EcoFlow Delta 2 Solar Generators overview or look into the larger capacity variant via the EcoFlow Delta 2 Max Portable Power Station.

• Capacity: 2,042Wh

• AC Output: 2,200W continuous

• Why it's great: Jackery’s v2 iteration features high-efficiency TOPCon 200W panels (roughly 25% conversion efficiency) and an automotive-grade LFP battery rated for an 11-year lifespan. Operating at an ultra-quiet <30dB, it won't disturb you if kept in the bedroom to power your CPAP machine. The dual 200W setup can fully recharge the station via sunlight in about 7.5 hours of optimal sun.

• View the bundle details on the Jackery Explorer 2000 v2 Portable Power Station.

• Capacity: 3,840Wh (Expandable)

• AC Output: 6,000W split-phase (120V/240V)

• Why it's great: If you live in an area prone to multi-day outages or want a heavy-duty solution that can power your entire kitchen rather than just bare essentials, the Anker SOLIX F3800 is a powerhouse on wheels. It features dual-voltage output and massive capacity, making short work of heavy inductive loads like refrigerators, freezers, and medical gear simultaneously.

• Explore features on the Anker SOLIX F3800 Portable Power Station.[1]

Quick Sizing Math

• Refrigerator: A modern energy-efficient fridge consumes about 100W to 200W running average (1,200W startup surge), using roughly 1.2kWh to 2kWh per 24-hour period if opened sparingly.
• CPAP Machine: Typically draws 30W to 60W over an 8-hour night (roughly 0.3kWh to 0.5kWh), especially if heated tubing and a humidifier are turned off or set low.
• Combined Total: Expect a daily draw of roughly 1.5kWh to 2.5kWh. A 2,000Wh (2kWh) power station will give you a full day of peace of mind, assuming adequate daily solar replenishment.

To help narrow down the ideal choice, do you know:

• How many hours per day you expect the power to be out?
• Whether you prefer a smaller, lighter unit that you can easily carry into the bedroom for the CPAP, or a larger, wheeled unit that stays stationary by the kitchen?

For refrigerator + CPAP backup, I’d prioritize battery capacity, pure-sine AC output, low-noise operation, and enough solar input to recharge during a prolonged outage.

My top pick: EcoFlow DELTA Pro 3 + 800–1,200W of portable solar

• EcoFlow DELTA Pro 3 Solar Generator (PV400W) - $3,099.00 (EcoFlow)

The EcoFlow DELTA Pro 3 is the strongest overall choice if this is primarily for home emergency backup, rather than camping.

• 4,096Wh (4.1kWh) LFP battery
• 4,000W continuous / 8,000W surge output
• 2,600W maximum solar input
• 120V and 240V output
• About 10 ms UPS transfer time
• Expandable substantially with additional batteries
• 5-year warranty
• EcoFlow rates a 120W refrigerator at about 27 hours on one DELTA Pro 3 under its test conditions.EcoFlow Italia+1
• It's also unusually quiet—EcoFlow specifies about 30 dB when powering loads up to 2,000W, which is particularly attractive if the unit is near a bedroom.EcoFlow Italia

For the solar side, I would not stop at a single 400W panel. A 400W panel is useful for topping up, but for an actual multi-day outage I'd want roughly 800–1,200W of portable panels. The DELTA Pro 3 can accept up to 2,600W, so there's plenty of room to increase solar later.EcoFlow

A representative 400W panel is:

• EcoFlow 400W Foldable Solar Panel - $649.99 (Best Buy)

I'd start with two 400W panels (800W total) if portability matters, or go to three 400W panels (1,200W) if your goal is keeping the refrigerator running indefinitely during sunny weather.

Best value: BLUETTI AC200L + 700–1,200W solar

• BLUETTI AC200L Solar Generator - $1,199.00 (BLUETTI-US)

If the DELTA Pro 3 is more than you want to spend, the BLUETTI AC200L is an excellent refrigerator/CPAP solution.

It has:

• 2,048Wh battery
• 2,400W continuous output
• 4,800W surge
• 1,200W solar input
• Pure-sine inverter
• LiFePO₄ battery rated for 3,000+ cycles to 80%
• UPS functionality
• Expandable battery capacity
• About 62 lb, making it considerably easier to move than the ~113-lb DELTA Pro 3.BLUETTI-US

The important distinction is runtime: 2kWh is plenty for a CPAP and refrigerator overnight, but 4kWh gives you substantially more breathing room if the outage lasts multiple days.

What I'd buy for your particular use

Why I wouldn't choose a smaller 1kWh generator

A refrigerator is deceptively demanding. Its average consumption may be modest, but the compressor can have a significant startup surge. A CPAP may only consume tens of watts, but it runs continuously through the night.

For example, if your refrigerator averages 60–100W over time and your CPAP averages 30–60W, you're potentially looking at roughly 2–4kWh/day after accounting for inverter losses and other small loads. Actual refrigerator consumption varies enormously, so your specific refrigerator's energy label or a plug-in energy meter is much more useful than its nameplate wattage.

That's why I'd consider 2kWh the minimum I'd want, and 4kWh the sweet spot for serious emergency preparedness.

One important CPAP consideration

If your CPAP supports 12V DC power, you can potentially avoid the power station's AC inverter and save some energy. That's particularly valuable overnight. Check your exact CPAP model and its manufacturer's approved DC power options—don't substitute an arbitrary cable or voltage converter.

Bottom line: If budget allows, I'd get the EcoFlow DELTA Pro 3 with at least 800W of portable solar, preferably 1,200W. It gives you a much larger energy reserve, excellent surge capacity for the refrigerator compressor, fast solar replenishment, and enough expandability that you won't outgrow it if you later want to add a freezer, modem/router, lights, or other essentials.EcoFlow Italia+1

If you tell me your refrigerator model, CPAP model, and how many hours/days of backup you want (e.g. 24, 48, or 72 hours), I can calculate the required battery and solar-panel size and give you a more precise setup.