What size generator do I need?
Pick your situation below — every guide is a live calculator pre-loaded with the typical device list for that scenario, plus a static answer with exact watts, startup surge and battery watt-hours. Cross-brand recommendations from 25 current power stations; appliance data from U.S. DOE, ENERGY STAR and manufacturer spec sheets.
Houses & Home Backup
- what size generator for a 1500 sq ft home 1,275W run · 1,525W surge · 2,890Wh
- what size generator for a 2200 sq ft house 2,410W run · 2,660W surge · 4,200Wh
- what size generator for a 2500 sq ft home 2,882W run · 3,582W surge · 5,370Wh
- what size generator for a 3000 sq ft home 4,137W run · 6,337W surge · 16,910Wh
- what size generator for a 4000 sq ft home 6,125W run · 12,935W surge · 27,330Wh
- what size generator to run a house 11,863W run · 26,113W surge · 49,840Wh
- what size generator do i need for home backup 2,385W run · 4,585W surge · 3,370Wh
- what size generator for home power outage 3,322W run · 4,822W surge · 11,420Wh
- what size generator do i need for hurricane season 3,692W run · 5,852W surge · 13,750Wh
- what size generator do i need for a well pump 2,362W run · 8,612W surge · 3,210Wh
- what size generator for a house with a septic system 2,392W run · 4,792W surge · 2,790Wh
- what size generator for home with medical equipment 1,454W run · 1,704W surge · 10,510Wh
- generator for home oxygen machine 441W run · 691W surge · 10,120Wh
- what size solar generator for whole house 8,483W run · 15,293W surge · 32,540Wh
Apartments
- what size generator do i need for my apartment 1,312W run · 1,562W surge · 3,300Wh
- solar generator for apartment 436W run · 836W surge · 4,520Wh
Cabins & Off-grid
- what size generator for a cabin 1,437W run · 1,637W surge · 5,560Wh
- what size solar generator for off-grid cabin 4,080W run · 11,880W surge · 13,890Wh
RVs
- what size generator do i need for a 30 amp rv 3,081W run · 8,481W surge · 19,400Wh
- what size generator do i need for a 50 amp rv 8,263W run · 19,063W surge · 43,550Wh
- what size generator for rv in winter 2,776W run · 2,976W surge · 10,470Wh
- solar generator for full time rv living 4,062W run · 9,462W surge · 25,190Wh
- what size generator for rv air conditioner 1,835W run · 7,235W surge · 18,600Wh
Trailers & Campers
- what size generator do i need for my trailer 3,189W run · 8,589W surge · 20,150Wh
- what size generator for a truck camper 1,996W run · 2,196W surge · 3,690Wh
Van Life
- solar generator for van life 226W run · 426W surge · 2,340Wh
- what size solar generator for camper van 3,789W run · 6,049W surge · 18,410Wh
- solar generator for starlink and remote work 364W run · 564W surge · 4,810Wh
Camping
- what size generator do i need for camping 346W run · 746W surge · 2,940Wh
- generator for family camping trip 4,129W run · 4,529W surge · 4,490Wh
- best solar generator for glamping 2,678W run · 4,938W surge · 13,880Wh
- solar generator for cpap camping 189W run · 389W surge · 1,420Wh
Events & Weddings
- what size generator do i need for a wedding 1,920W run · 2,720W surge · 6,870Wh
- what size generator for dj setup 600W run · 600W surge · 2,370Wh
- generator for craft fair vendor booth 282W run · 682W surge · 2,550Wh
Food Trucks
- what size generator for a food truck 5,077W run · 5,477W surge · 9,450Wh
Jobsites & Power Tools
- what size generator do i need for power tools 1,812W run · 3,612W surge · 1,750Wh
- generator for jobsite with air compressor 4,142W run · 7,062W surge · 2,450Wh
- generator for home remodeling project 6,978W run · 10,488W surge · 3,890Wh
- what size generator do i need for a welder 3,642W run · 5,642W surge · 1,690Wh
Single-Device Guides
- what size generator to run a refrigerator 125W run · 375W surge · 1,250Wh
- what size generator do i need for my fridge and freezer 215W run · 465W surge · 2,150Wh
- what size solar generator for freezer 90W run · 270W surge · 900Wh
- what size generator do i need for sump pump 1,100W run · 3,300W surge · 420Wh
- what size generator to run a well pump 1,150W run · 7,400W surge · 720Wh
- what size generator do i need for central ac 2,680W run · 9,490W surge · 23,050Wh
- what size generator for window air conditioner 700W run · 2,100W surge · 7,000Wh
- what size generator for cpap machine 79W run · 96W surge · 720Wh
- generator for oxygen concentrator 290W run · 290W surge · 8,700Wh
- what size generator do i need for tv 343W run · 343W surge · 2,090Wh
- generator for home office during outage 367W run · 367W surge · 2,110Wh
- what size generator to run a space heater 1,626W run · 1,626W surge · 8,670Wh
- what size solar generator to run a refrigerator 125W run · 375W surge · 1,250Wh
- generator to run pool pump 815W run · 2,415W surge · 6,450Wh