What size solar generator for freezer?
Check, uncheck or adjust the typical device list below — watts, startup surge and battery size update instantly. Numbers come from U.S. DOE, ENERGY STAR and manufacturer spec sheets, not marketing copy.
1. Check what you need to power
Refrigeration & Freezers
- 1
Kitchen
Heating, Cooling & Fans
Water & Pumps
Laundry & Cleaning
Electronics & Office
Medical Devices
Power Tools & Outdoor
Lighting
2. Your sizing
Assumptions: daily hours per device follow DOE / ENERGY STAR duty cycles; capacity adds a 25% margin. Check your appliance nameplates — actual draw varies by model.
3. Best matches from our 6-brand database
- EcoFlow DELTA 3~$599
- rated 1,800W covers your 100W continuous load
- surge 3,600W covers your 1,200W start peak
- 1.4 days of your typical daily use (1,024Wh / 720Wh)
- Jackery Explorer 1000 v2~$519
- rated 1,500W covers your 100W continuous load
- surge 3,000W covers your 1,200W start peak
- 1.5 days of your typical daily use (1,070Wh / 720Wh)
- Generac GB1000~$1,049
- rated 1,600W covers your 100W continuous load
- surge 3,200W covers your 1,200W start peak
- 1.5 days of your typical daily use (1,086Wh / 720Wh)
Static answer (crawlable summary)
Typical device list: Freezer (chest, ~15 cu ft)×1.
Estimated from: Energy Star Certified Products
| Continuous load | 90 W |
|---|---|
| Startup peak | 1,200 W (driven by 1× Freezer (chest, ~15 cu ft)) |
| Daily energy use | 720 Wh |
| Recommended capacity | 900 Wh (25% margin included) |
| Minimum inverter | 100 W continuous |
Frequently asked questions
What size solar generator for freezer?
For a typical setup (Freezer (chest, ~15 cu ft)), you need at least 90W of continuous power. The single biggest moment is startup: when 1× freezer (chest, ~15 cu ft) kicks on, the momentary draw peaks at 1,200W. For a full day of runtime we recommend at least 900Wh of battery capacity (your devices use about 720Wh per day, plus a 25% margin for a full day of use).
Which power stations can handle this?
Based on published specs, EcoFlow DELTA 3, Jackery Explorer 1000 v2, Generac GB1000 cover the 1,200W startup peak and deliver 1.4 days / 1.5 days / 1.5 days of typical daily use. Check the comparison cards above for the full numbers.
Why is the startup surge higher than the running watts?
Motor-driven devices (fridge compressors, well pumps, air conditioners) draw 2-5× their running power for a split second at startup — measured as locked-rotor amps (LRA). On this page the biggest spike comes from the Freezer (chest, ~15 cu ft): a station that only meets the running load will trip or stall when it starts. Data sources: U.S. DOE Energy Saver, ENERGY STAR certified products, manufacturer spec sheets.