The Night the Power Went Out: How Far 1,000Wh Really Goes, Hour by Hour
Disclosure: GoodGearDaily is reader-supported. We may earn a commission if you buy through links on this page, at no extra cost to you. Specs and prices were checked on the brands’ US websites in October 2026. The numbers below are estimates, not guarantees, and nothing here replaces advice from an electrician or your medical device provider.
Battery sizes are easy to compare on paper. What’s hard is picturing what 1,000Wh actually buys you at 2 a.m. with the lights off. So instead of starting with a chart, we walked through one ordinary outage, hour by hour, using the same math as the calculator further down.
The setup: a family home, a typical 1,000Wh-class power station (about 870Wh usable after inverter losses), and a short list: a Wi-Fi router and modem (15W), three LED bulbs (30W together), two phones, and a full-size fridge that averages about 60W. No solar yet.
6:40 p.m. The lights go out
Battery: 100%. The router goes on first, then the lights. The fridge stays unplugged, and that’s on purpose: USDA guidance says a closed fridge keeps food safely cold for about four hours. Opening the door to check on it is the one thing that breaks the rule.
9:00 p.m. Everyone charges their phone at once
Battery: about 84%. Two phones take roughly 30Wh, which barely registers. The lights have quietly used more than both phones combined. This is the pattern for the whole night: small things you leave on matter more than big things you use briefly.
10:40 p.m. The four-hour mark
Battery: about 76%. Now the fridge gets plugged in, for one four-hour block. A fridge thermometer helps here: as long as it reads 40°F or below, food is fine.
12:40 a.m. Lights off, house asleep
The bulbs have done six hours and used 180Wh. From here on, only the router and the fridge draw power.
2:40 a.m. Fridge off again
Battery: about 34%. The fridge block used about 240Wh, more than anything else all night. Unplugging it for the next four hours is what keeps the morning possible.
6:40 a.m. Twelve hours in, and the coffee question
Battery: about 28%, roughly 240Wh left. Someone wants coffee. A drip coffee maker pulls about 900W, so ten minutes of brewing costs about 150Wh. That’s 17% of a full battery for one pot, and it would cut the fridge’s next block short. In our walkthrough, the coffee waits.
Around 10 a.m. Empty
The fridge’s second block plus the router (about 75W together) drains the last 240Wh in a little over three hours. Final tally: a single 1,000Wh unit carried this house for about 15 hours, through the whole night, with the fridge run in blocks. Leave the fridge plugged in nonstop and you’d be empty before sunrise.
Your house won’t look exactly like this one. Swap in your own devices and outage length below and the calculator redoes the math.
1. What do you want to keep running?
2. How long could the outage last?
3. Solar panel?
What we’d do differently on night two
Add solar before you add batteries. A 200W panel in decent sun puts back around 600Wh on a clear day (about four peak sun hours, minus losses). That alone covers the fridge’s daytime blocks. It doesn’t replace a bigger battery for a 3-day storm, but it turns “empty by 10 a.m.” into “comfortable until evening.”
Know where the freezer stands. A full, closed freezer holds its temperature for about 48 hours (about 24 if half full). For most one-night outages it needs nothing from the battery.
Put medical devices first. If someone in the house uses a CPAP, it outranks the fridge. We cover that case on its own in our CPAP battery guide.
Mind the sump pump. If your basement floods in storms, check two numbers before relying on a power station: the pump’s running watts against the unit’s continuous output, and its startup surge (often 2 to 3 times running watts) against the surge rating.
The units the calculator suggests
| Model | Capacity | AC output | UPS switchover | US price when checked |
|---|---|---|---|---|
| Jackery Explorer 300 v2 | 288Wh | 300W | Not listed | ~$299 |
| EcoFlow RIVER 3 Plus | 286Wh, expandable to 858Wh | 600W | <10ms | ~$299 |
| Bluetti Elite 100 V2 | 1,024Wh | 1,800W | ≤10ms | ~$499 |
| Jackery Explorer 1000 v2 | 1,070Wh | 1,500W | ~20ms | ~$519 |
| EcoFlow DELTA 3 Plus | 1,024Wh, expandable to 5kWh | 1,800W | <10ms | ~$719 |
The switchover column matters if you want the router or a desktop PC to stay on the instant the grid drops. For how the three 1,000Wh units compare in practice, including what owners complain about, see EcoFlow vs Jackery vs Bluetti.
A safety note. Battery power stations make no exhaust, so they’re fine indoors on a hard surface with room around the vents. A gas generator is the opposite: never indoors or in a garage. And don’t wire any power station into your home’s circuits without a transfer switch installed by a licensed electrician.
Sources
- USDA food-safety guidance for power outages, as summarized by West Virginia University Extension
- Manufacturer US product pages for each model listed (specs and prices checked October 2026)
- StorageReview: EcoFlow DELTA 3 Plus review (efficiency and UPS testing)
- TechRadar: Jackery Explorer 1000 v2 review
