Most households know roughly what their internet plan costs each month — but almost no one has calculated what the router itself costs to run. A router consuming 12 watts continuously, 24 hours a day, 365 days a year, accumulates more electricity consumption than most people expect — and in high-cost electricity states, the annual figure is genuinely worth optimizing. This guide gives you the exact calculation for every router type, by every state’s electricity rate, so you can determine precisely what your home networking equipment costs to power — and what the most effective steps are to reduce that cost without sacrificing internet performance.
RingPlanet’s 5G fixed wireless router consolidates the functions of a cable modem and a Wi-Fi router into a single compact device — reducing total home networking equipment power consumption and therefore reducing the combined electricity cost relative to the separate modem-plus-router cable internet setup. For a complete overview of router power consumption including wattage figures and energy-saving strategies, see our Router Power Consumption complete guide.
The Basic Electricity Cost Calculation for Routers
Converting router wattage to annual electricity cost is a straightforward calculation:
Annual electricity cost = (Wattage ÷ 1,000) × 8,760 hours × electricity rate ($/kWh)
Breaking this down:
- Wattage ÷ 1,000 converts watts to kilowatts
- 8,760 is the number of hours in a year (24 hours × 365 days)
- Multiplying by the electricity rate gives the annual cost in dollars
Example for a 12W router at $0.16/kWh national average: (12 ÷ 1,000) × 8,760 × $0.16 = $16.82 per year
Example for the same 12W router in California at $0.28/kWh: (12 ÷ 1,000) × 8,760 × $0.28 = $29.43 per year
The electricity rate at your location has a significant effect on the annual cost — a household in Hawaii pays nearly four times more per kWh than a household in Louisiana, turning a $9 annual router cost into a $36 one.
Annual Electricity Cost by Router Type — National Average Rate
At the U.S. national average electricity rate of approximately $0.16/kWh:
| Router Type | Typical Wattage | Annual kWh | Annual Cost |
| Basic single-band | 4W | 35.0 kWh | $5.62 |
| Dual-band Wi-Fi 5 (budget) | 8W | 70.1 kWh | $11.21 |
| Dual-band Wi-Fi 5 (mid-range) | 12W | 105.1 kWh | $16.82 |
| Dual-band Wi-Fi 6 | 14W | 122.6 kWh | $19.62 |
| Tri-band Wi-Fi 6E | 22W | 192.7 kWh | $30.83 |
| Gaming router | 30W | 262.8 kWh | $42.05 |
| 3-node mesh system | 42W | 367.9 kWh | $58.87 |
| ISP combo unit (modem + router) | 15W | 131.4 kWh | $21.02 |
Annual Electricity Cost by State — 12W Router
| State | Rate ($/kWh) | Annual Cost | Monthly Cost |
| Louisiana | $0.099 | $10.40 | $0.87 |
| Oklahoma | $0.105 | $11.03 | $0.92 |
| Arkansas | $0.107 | $11.24 | $0.94 |
| Texas | $0.121 | $12.70 | $1.06 |
| Florida | $0.133 | $13.97 | $1.16 |
| Georgia | $0.134 | $14.07 | $1.17 |
| National Average | $0.160 | $16.82 | $1.40 |
| Ohio | $0.161 | $16.91 | $1.41 |
| Michigan | $0.175 | $18.38 | $1.53 |
| Virginia | $0.131 | $13.76 | $1.15 |
| New Jersey | $0.196 | $20.59 | $1.72 |
| New York | $0.213 | $22.38 | $1.87 |
| Massachusetts | $0.253 | $26.58 | $2.22 |
| Connecticut | $0.274 | $28.78 | $2.40 |
| California | $0.284 | $29.83 | $2.49 |
| Hawaii | $0.383 | $40.22 | $3.35 |
Combined Router and Modem Annual Electricity Cost
Cable internet households run both a modem and a router — the combined electricity cost is the relevant figure for the total home networking equipment cost:
| Setup Type | Modem | Router | Combined | Annual Cost |
| Basic cable setup | 6W | 6W | 12W | $16.82 |
| Standard cable setup | 8W | 12W | 20W | $28.03 |
| Advanced cable setup | 12W | 18W | 30W | $42.05 |
| High-performance setup | 15W | 30W | 45W | $63.07 |
| 3-node mesh + modem | 10W | 42W | 52W | $72.88 |
For context — a standard cable internet household running a combined 20W of networking equipment pays approximately $28 per year in electricity to keep those devices powered. In California, the same setup costs approximately $49 per year. In Hawaii, approximately $67 per year.
How to Calculate Your Exact Router Electricity Cost
For the most accurate calculation specific to your router and electricity rate:
Step 1: Measure your router’s actual wattage Use a smart plug with energy monitoring or a Kill-A-Watt meter to measure the actual operational wattage — not the spec sheet maximum. Most routers consume 40–60% of their rated maximum during typical household operation.
Step 2: Find your electricity rate Your electricity rate is printed on your monthly electricity bill — typically expressed as cents per kWh. Use the rate for your current billing period for the most accurate calculation.
Step 3: Apply the formula Annual cost = (Measured wattage ÷ 1,000) × 8,760 × your electricity rate
Step 4: Add modem consumption if applicable If you run a separate cable modem, measure its wattage with the same method and add it to the router’s wattage before calculating.
The Hidden Cost of Running Multiple Network Devices
Many households run more networking equipment than they realize:
- Cable modem: 8–12W
- Wi-Fi router: 10–18W
- Wi-Fi extender or range extender: 5–10W
- Network switch: 5–20W
- NAS device: 15–30W
A household running all five of these devices simultaneously consumes 43–90W of networking equipment power — costing $60–$126 per year at the national average rate. In California, this rises to $107–$224 per year.
This is the hidden cost of home networking sprawl — each device added to manage network limitations adds its own continuous power draw to the household electricity bill.
What Reducing Router Power Consumption Actually Saves
Understanding the actual dollar figures helps calibrate how much effort is worth expending on power reduction:
Turning router off 8 hours per night: A 12W router running 16 hours instead of 24 hours saves 4W × 8,760 hours × reduction factor = approximately $5.60 per year at national average. In California: approximately $9.80 per year.
Disabling unused 6GHz radio on Wi-Fi 6E router: Disabling the 6GHz band on a router where no device uses it saves approximately 5W — approximately $7 per year at national average.
Replacing a 25W gaming router with a 12W Wi-Fi 6 router: Saves 13W continuously — approximately $18.20 per year at national average. In California: approximately $32 per year. Over a 5-year router lifecycle, this saves $91–$160 in electricity — often exceeding the cost difference between the two routers.
Replacing separate modem + router (22W combined) with a combo unit (14W): Saves 8W — approximately $11.20 per year at national average. In California: approximately $19.60 per year.
Switching from cable (separate modem + router, 22W) to RingPlanet 5G fixed wireless (single router, 15W): Saves 7W — approximately $9.80 per year at national average. In high-cost states, this saving combines with RingPlanet’s consistent peak-hour performance advantages to make the switch both a performance and an energy efficiency upgrade simultaneously.
Electricity Cost of Running a Router vs. Other Monthly Bills
Putting router electricity cost in context with other household recurring expenses:
| Expense | Monthly Cost | Annual Cost |
| Internet plan (typical) | $50–$80 | $600–$960 |
| Router electricity (12W, national avg) | $1.40 | $16.82 |
| Modem electricity (8W, national avg) | $0.94 | $11.24 |
| Combined networking electricity | $2.34 | $28.06 |
| Internet plan + equipment electricity | $52–$82 | $628–$988 |
The electricity cost of running home networking equipment adds approximately 3–5% to the total annual cost of home internet service when the plan cost is included. This is a modest percentage — but in high-electricity-cost states with a multi-device networking setup, the absolute dollar figure warrants attention.
What the U.S. Department of Energy Says About Reducing Network Equipment Power Costs
The U.S. Department of Energy’s Energy Saver program identifies home networking equipment — routers, modems, and range extenders — as a significant contributor to household standby power consumption. The DOE recommends choosing Energy Star-certified equipment, enabling available power management features, and considering consolidation of separate networking devices into combo units as practical steps for reducing home electronics electricity costs. The DOE notes that networking equipment operates continuously unlike most other household electronics, making efficiency improvements particularly impactful on an annual basis.
Frequently Asked Questions
How much does a Wi-Fi router cost to run per year?
A typical 12-watt Wi-Fi router costs approximately $16.82 per year at the U.S. national average electricity rate of $0.16/kWh. In high-cost states like California ($0.28/kWh), the same router costs approximately $29.43 per year. For state-by-state figures across all router types, use the tables in this guide.
How much does a router cost per month in electricity?
A typical 12-watt router costs approximately $1.40 per month at the national average electricity rate. This rises to $2.49 per month in California and $3.35 per month in Hawaii. For the wattage figures of different router types, see our How Many Watts Does a Router Use guide.
Does a faster router use more electricity?
Generally yes — higher-performance routers with more processing capability, additional frequency band radios, and faster processors consume more power. A gaming router consuming 30W costs approximately three times more to run annually than a basic dual-band router consuming 10W. For most households, a mid-range dual-band Wi-Fi 6 router delivers full internet plan performance at the lowest practical power consumption.
How much does a mesh Wi-Fi system cost to run per year?
A three-node mesh Wi-Fi system consuming approximately 42W total costs approximately $58.87 per year at the national average electricity rate — compared to $16.82 for a single 12W router. The coverage improvement of a mesh system may justify this additional $42 per year for large homes, but for homes where a single router provides adequate coverage, the additional consumption is unnecessary.
Is it worth buying a more energy-efficient router?
It depends on your current router’s consumption and your electricity rate. Replacing a 25W gaming router with a 12W Wi-Fi 6 router saves approximately $18 per year at national average rates — recouped in router energy savings within 3–4 years assuming the new router costs $50–$60 more. In California or other high-rate states, the payback period is shorter.
Does a router use more electricity when streaming?
Slightly — a router handling active high-bandwidth streaming consumes marginally more power than during idle periods. The increase is typically 1–5 watts and represents a minor fraction of total annual consumption. For most households, the difference between peak-traffic and idle consumption is too small to affect practical electricity cost calculations.
