What Size Solar Panel Do I Need for a Phone Hotspot / WiFi Router?

20W running draw24h/day defaultelectronics

Quick Answer

A Phone Hotspot / WiFi Router at 20W needs at least 200W of solar panels to run sustainably. Running 24 hours per day draws 480 Wh daily. A single 200W solar panel covers it. Pair with a 150Ah LiFePO4 battery at 12V for 2-day cloudy weather reserve. The EcoFlow River 2 is the simplest all-in-one solution for this load.

System Specs for a Phone Hotspot / WiFi Router

Calculated for 24 hours/day usage, 5 peak sun hours, and 2-day LiFePO4 battery autonomy.

ComponentMinimum SizeDetails
Daily Energy480 Wh20W for 24h
Solar Panels200W1x 200W panel covers it
Battery150Ah at 12VLiFePO4, 2-day reserve (1.4 kWh usable)
Charge Controller30A MPPTHandles up to 200W panel input at 12V

Running more than just a phone hotspot / wifi router? Add more appliances to your load with our full calculator

Recommended Power Station

EcoFlow River 2

256Wh capacity, 300W AC output — ideal for phones, laptops, CPAP, and small electronics.

256Wh

Capacity

300W

AC Output

110W

Max Solar In

Buy on EcoFlow.comView with Solar Panel Bundle

DIY Component List

Building your own system for a phone hotspot / wifi router? These components match the specs above.

Solar Panel

200W total

Renogy 200W 12V Monocrystalline on Amazon

Battery

150Ah 12V LiFePO4 minimum

LiTime 12V 200Ah LiFePO4 on Amazon

Charge Controller

30A MPPT minimum

Renogy 40A MPPT Rover on Amazon

About the Phone Hotspot / WiFi Router Solar Load

A WiFi router draws 10–30 watts, averaging 20 watts. Running 24 hours per day produces 480Wh of daily consumption. For remote work setups, a cellular hotspot or router is a constant background load that adds up significantly over a week but is easily handled by any solar system sized for other loads.

Frequently Asked Questions

How much solar do I need to run a WiFi router 24/7?▼
A WiFi router at 20W continuous uses 480Wh per day. A 100W solar panel generates 400–500Wh daily in most US regions — enough to run the router with minimal excess. In practice, routers are combined with laptops, phones, and other loads, so you size the solar for the whole system. A 200W panel handles router plus laptop plus phone charging comfortably. If Starlink is your internet source, the Starlink dish at 75W dominates the networking load and your router is negligible in comparison.
Can a small power station run a router during a power outage?▼
A 20W router running on the EcoFlow River 2 (256Wh) lasts about 11 hours before needing a recharge. The River 2 Pro (768Wh) runs a router for over 35 hours — more than enough to cover any power outage while keeping your internet up for emergency communications. Combine with a 100W solar panel for indefinite runtime. The Jackery 300 and the BioLite BaseCharge 600 are alternative portable options in the same category that both handle routers without issue.
What is the most power-efficient router for off-grid use?▼
Travel routers designed for mobile use draw the least power. The GL.iNet Beryl AX draws under 10W under load. The TP-Link AC750 Travel Router draws about 8W. Compared to a full home router at 15–25W, these save 30–50% of networking power consumption over a year. For van or RV builds, a cellular router with dual SIM like the Netgear LM1200 or Pepwave MAX BR1 draws 12–15W and eliminates the Starlink dish power requirement if you have strong cell coverage.

Related Electronics Appliances

Laptop

60W running draw

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Smartphone Charging

15W running draw

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Starlink Satellite Internet

75W running draw

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Television (32–55")

100W running draw

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Running more than just a phone hotspot / wifi router?

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