What you can actually run
Every appliance here is given as a range, because that is what the evidence supports. The right-hand number is the one to size on.
Pick an appliance
Wi-Fi router and modem
15–40W running · 40W peak start · 100–100% duty
Plugs into an outlet
Phone charging and small USB devices
10–40W running · 40W peak start · 20–60% duty
Plugs into an outlet
A few LED lights
15–80W running · 80W peak start · 25–75% duty
Usually plugs in
Laptop and monitor
45–150W running · 150W peak start · 40–100% duty
Plugs into an outlet
CPAP
30–100W running · 100W peak start · 100–100% duty
Plugs into an outlet
Refrigerator/freezer
100–700W running · 2,900W peak start · 20–50% duty
Usually plugs in
Chest freezer
80–500W running · 2,200W peak start · 15–45% duty
Usually plugs in
Gas-furnace blower
400–1,200W running · 3,500W peak start · 30–70% duty
Wired into the building
Sump pump
700–1,500W running · 4,500W peak start · 5–35% duty
Wired into the building
Well pump
700–2,000W running · 6,000W peak start · 2–15% duty
Wired into the building
Window air conditioner
500–3,250W running · 7,200W peak start · 40–80% duty
Usually plugs in
Microwave
800–1,800W running · 1,800W peak start · 2–8% duty
Usually plugs in
Coffee maker
700–1,500W running · 1,500W peak start · 2–8% duty
Plugs into an outlet
Television
40–250W running · 250W peak start · 30–100% duty
Plugs into an outlet
Garage door opener
300–800W running · 1,800W peak start · 0–1% duty
Wired into the building
12 V compressor fridge (camping)
25–110W running · 320W peak start · 25–50% duty
Plugs into an outlet