What Size Generator Do I Need? Power Station Sizing Guide

What Size Generator Do I Need? Power Station Sizing Guide

Quick Picks by Use Case

Jackery 102W GaN 3-Port Fast Charger powering multiple devices efficiently
Fast charge up to 3 devices simultaneously with 102W GaN technology.

Figuring out what size generator you need comes down to two numbers: how many watts your devices draw and how long you need them to run. Get those right, and picking a power station is simple.

Use Case Recommended Unit Output Price
Camping / Weekend Trips EcoFlow DELTA 2 + 110W Solar 1800W $1,149
RV / Extended Off-Grid EcoFlow DELTA 2 Max + 400W Solar 3400W $1,399
Home Backup (Essentials) EcoFlow DELTA Pro 3 4000W $2,299
Whole-Home / Long Outages EcoFlow DELTA Pro Ultra + Battery 7200W $4,199

How to Calculate What Size Generator You Need

Jackery 1000 Plus Battery Pack used for expanding power station capacity
Calculate your total watt-hours to ensure your power station handles peak loads.

Step 1: List every device you want to power. Check the label or manual for wattage. Common loads: mini fridge (~100W), CPAP (~30–60W), laptop (~65W), window AC (~1200W), electric kettle (~1500W).

Step 2: Add up running watts, then check starting watts. Motors (fridges, AC units) spike 2–3× at startup. Your power station's rated output must exceed that peak.

Step 3: Multiply running watts × hours to get Wh needed. Example: 500W of devices running 4 hours = 2000Wh. Pick a unit at or above that capacity — and factor in ~80–85% real-world efficiency.

Quick rule of thumb: under 1000Wh = camping/day trips, 1000–3000Wh = RV or multi-day outages, 3000Wh+ = serious home backup.

Best Power Stations by Size

Front view of the Jackery 1000 Plus 1264Wh LiFePO4 expansion battery
Choose the right size power station for camping, RVing, or home backup.

Light duty (camping, devices, CPAP): The EcoFlow DELTA 2 + 110W Solar Panel is a compact, solar-ready combo that handles everyday outdoor power needs at an accessible price point.

Mid-range (RV, job site, multi-day backup): The EcoFlow DELTA 2 Max + 400W Solar Panel delivers 3400W output with X-Boost and expandable capacity up to 6144Wh — enough to run 99% of home appliances.

Heavy-duty home backup: The EcoFlow DELTA Pro 3 puts out 4000W — refrigerators, sump pumps, and power tools, no problem. The EcoFlow DELTA Pro Ultra + Battery steps it up to 7200W for extended whole-home coverage.

EcoFlow DELTA 2 Max + 400W Solar Panel

$1,399.00

3400W output, up to 6144Wh expandable, LFP battery, 3000+ cycles

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EcoFlow DELTA Pro 3 Portable Power Station Solar Generator

$2,299.00

4000W output — powers nearly all home essentials

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Expand Your Capacity Later

Jackery 1000 Plus Battery Pack adding 1264Wh capacity to your setup
Add 1264Wh of LiFePO4 capacity to your Explorer 1000 Plus easily.

Don't want to overbuy upfront? Start smaller and scale. The Jackery 1000 Plus Battery Pack adds 1264Wh of LiFePO4 capacity to your Explorer 1000 Plus — nearly doubling your runtime for under $400.

Pair with the Jackery 10m DC Extension Cable to position solar panels for max sun without moving your station. Small accessory, big difference in daily harvest.

Bottom line: Buy the output (watts) you need today. Buy the capacity (Wh) you can grow into. Most quality power stations are modular — your first unit doesn't have to be your last.

Jackery 1000 Plus Battery Pack — 1264Wh LiFePO4 Expansion

$399.00

1264Wh LiFePO4 | 4000+ charge cycles | Expands Explorer 1000 Plus

Shop Now — Free Shipping

Frequently Asked Questions

What size generator do I need to run a refrigerator?

Most refrigerators run at 100–400W but spike to 800–1200W on startup. You need a power station with at least 1500W rated output and 1000–2000Wh of capacity for overnight runtime. The EcoFlow DELTA 2 Max handles this easily.

Is a 2000Wh power station enough for home backup?

For essentials — lights, phone, laptop, CPAP, mini fridge — yes, 2000Wh buys you 12–24 hours. For full home backup including AC or electric appliances, step up to the EcoFlow DELTA Pro 3 (4000W) or higher.

Can I add solar panels to any of these power stations?

Yes — all featured EcoFlow and Jackery units support solar input. Use the correct connector adapter (Jackery DC7909/DC8020 adapters available at Swag House) and make sure your panel wattage stays within the unit's max solar input rating.


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