What Size Solar Panel Do I Need for a Electric Blanket?

200W running draw8h/day defaulthvac

Quick Answer

A Electric Blanket at 200W needs at least 600W of solar panels to run sustainably. Running 8 hours per day draws 1.6 kWh daily. You need 600W of solar total (3 panels at 200W each). Pair with a 400Ah LiFePO4 battery at 12V for 2-day cloudy weather reserve. The EcoFlow River 2 Pro is the simplest all-in-one solution for this load.

System Specs for a Electric Blanket

Calculated for 8 hours/day usage, 5 peak sun hours, and 2-day LiFePO4 battery autonomy.

ComponentMinimum SizeDetails
Daily Energy1.6 kWh200W for 8h
Solar Panels600W3x 200W or 6x 100W panels
Battery400Ah at 12VLiFePO4, 2-day reserve (4.8 kWh usable)
Charge Controller70A MPPTHandles up to 600W panel input at 12V

Running more than just a electric blanket? Add more appliances to your load with our full calculator

Recommended Power Station

EcoFlow River 2 Pro

768Wh capacity, 800W AC output — runs a fridge, lights, and electronics for 1–2 days.

768Wh

Capacity

800W

AC Output

220W

Max Solar In

Buy on EcoFlow.comView with Solar Panel Bundle

DIY Component List

Building your own system for a electric blanket? These components match the specs above.

Solar Panel

600W total

Renogy 400W Solar Starter Kit (2x200W + MPPT) on Amazon

Battery

400Ah 12V LiFePO4 minimum

LiTime 12V 200Ah LiFePO4 on Amazon

Charge Controller

70A MPPT minimum

Renogy 40A MPPT Rover on Amazon

About the Electric Blanket Solar Load

An electric blanket draws 150–250 watts on high heat and 60–100 watts on low. Budget 200 watts average for 8 hours of overnight use, producing 1,600Wh of daily consumption. Electric blankets are an efficient alternative to space heaters for personal warmth — heating one person instead of the whole room.

Frequently Asked Questions

Can I run an electric blanket off solar overnight?▼
An electric blanket at 200W for 8 hours uses 1,600Wh. A 200Ah LiFePO4 battery at 12V holds 2,400Wh usable — enough for one night comfortably. You need the solar array to recharge the battery fully the next day, which requires 400–500W of panels to cover the blanket consumption plus daytime loads. The EcoFlow Delta 2 (2,048Wh capacity) with a 220W solar panel covers one electric blanket overnight and recharges partially the next day. Running on low heat at 80W dramatically extends battery life to 25+ hours.
Is an electric blanket or space heater more efficient for solar?▼
Electric blankets are far more efficient for personal heating. A space heater at 1,500W heating a room consumes 4x more power than a 350W electric blanket heating one person. For off-grid sleeping in a van or cabin, an electric blanket on low (80–100W) uses less power than a laptop and provides all the warmth needed down to 20°F when combined with a quality sleeping bag. Space heaters on solar power require massive battery banks and are rarely practical. Always choose the blanket.
What electric blanket voltage is best for 12V solar systems?▼
Standard electric blankets run on 120V AC, so they require an inverter in a 12V solar system. 12V DC electric blankets and heated mattress pads exist from brands like Biddeford and SoftHeat, drawing about 60–100 watts directly from the battery. These eliminate inverter losses entirely. However, 12V electric blankets are typically smaller and lower-powered than their 120V counterparts. For a van build, a 12V heated seat cushion or electric mattress pad is more practical. For a cabin with a full inverter, a standard AC electric blanket is fine.

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Running more than just a electric blanket?

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