The 2024 Electricity Costs of Big UK ISP Home Broadband Routers UPDATE
Finally, if you’ve had a modern “full fibre” FTTP line installed, then you will have also had an optical modem (ONT / ONU) placed somewhere on your inside wall. Some of these devices ship with PSUs capable of drawing up to 36W, but in reality the 1Gbps class ONTs we’ve seen will draw up to 3-5 Watts. Consumers with 10Gbps capable ONTs may find this goes up to 6-8 Watts – assuming only 1 port on the ONT is being harnessed (normal).
In our comparison, we’ve assumed that each router has been left switched-on for 24 hours a day and 365 days a year (8,760 hours of usage). So an ONT consuming 4W (middle figure of 3-5W) is going to cost you £10.16 per year to run, while one gobbling 7W will cost £17.78 per year at the January 2024 rate. Sust-it has a useful calculator for all this.
2024 Router Power Consumption Costs
Wi-Fi Hub 1 (Sagemcom F@st 5364)
6.7W IDLE, 10.6W LOAD – 18W PSU
COST: £17.02 per year IDLE and £26.93 per year LOAD
Wi-Fi Hub 2 (Sagemcom F@st 5464)
7.29W IDLE, 10.6W LOAD – 18W PSU
COST: £18.52 per year IDLE and £26.93 per year LOAD
Eero pro 6 (Amazon)
7.8W IDLE and 8.6W LOAD – 27W PSU
COST: £19.82 per year IDLE and £21.85 per year LOAD
Smart Hub (SH)
7W IDLE, 11W LOAD – 24W PSU
COST: £17.78 per year IDLE and £27.94 per year LOAD
Smart Hub 2 (SH2)
8.48W IDLE, 14.10W LOAD – 17.7W PSU (details here – just for the PSU)
COST: £21.54 per year IDLE and £35.82 per year LOAD
Smart Hub Plus
10.46W IDLE, <23W LOAD – 30W PSU
COST: £26.57 per year IDLE and £58.43 per year LOAD9.9W IDLE, 11.6W LOAD – 30W PSU
COST: £25.15 per year IDLE and £29.47 per year LOAD
NOTE: The provider’s power reporting methodology (measurement method) changed between the SH2 and SH Plus.
Sky Q Hub
8.5W IDLE, 11W LOAD
COST: £21.59 per year IDLE and £27.94 per year LOAD
SkyBroadband Hub (SR203)
10W Typical (direct testing)
COST: £25.40 per year Typical
Sky Hub Max
??? (no data yet)
Wi Fi Hub (Vox 3)
6.5W IDLE, 11.16W LOAD – 30W PSU
COST: £16.51 per year IDLE and £28.35 per year LOAD
Ultra Hub
8.5W IDLE, 14.33W LOAD – 55W PSU
COST: £21.59 per year IDLE and £36.40 per year LOAD
HUB 4 (TG3492LG-VMB)
12W IDLE, 15.3W LOAD – 30W PSU
COST: £30.48 per year IDLE and £38.87 per year LOAD
HUB 5 (Sagemcom F3896LG-VMB)
13.49W IDLE, 15.51W LOAD – 36W PSU
COST: £34.27 per year IDLE and £39.40 per year LOAD
HUB 5x
9.17W IDLE, 11.87W LOAD – 36W PSU
COST: £23.30 per year IDLE and £30.15 per year LOAD
NOTE: The HUB 5x utilises XGS-PON technology as part of Virgin’s latest FTTP upgrades and nexfibre expansion, which is inherently less power-intensive than their older hybrid fibre coax network.
Overall, none of the above devices are likely to burn a huge hole in your pocket (electricity bill), at least not to an extent that is any greater than leaving a couple of energy-saving light bulbs switched-on 24/7. A lot of modern LED light bulbs only use around 4-8 Watts, which means that running two of them is very roughly similar to many of the routers we examined. On the other hand, those on lower incomes will feel the impact.
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Generally, almost all the routers being bundled by major ISPs are likely to cost no more than around £30 per year to run (roughly double the cost we found in 2017). If you have an ONT (FTTP) then you’ll need to add another c.£10 per year on top, and that’s before we consider any other essential additions, such as handsets for your phone service.
Consumers that hunt around may be able to find routers with a lower power draw, although the reality here is that any savings you make probably aren’t likely to be worth the effort and your network performance may suffer. At this point it’s worth remembering that the value you get back from a modern internet connection is usually more than enough to eclipse the cost of running such kit.
UPDATE 4th April 2024
We’ve updated the figures for BT/EE’s Smart Hub Plus after the operator provided a more reflective measurement.
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Mark is a professional technology writer, IT consultant and computer engineer from Dorset (England), he also founded ISPreview in 1999 and enjoys analysing the latest telecoms and broadband developments. Find me on X (Twitter), Mastodon, Facebook and Linkedin.
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So, people are worried about something in the region of 7p a day. Getting a bit silly isn’t it?
Slow news day
Aye, The amount of people who used to whine to me about speed drops on ADSL/FTTC but admitted they turned the router off overnight to “save a bit of power” was insane. I bet these people drink smoke and do other stuff which far outweighs the router power!
Oddballs the lot of them!
A lot of effort put in to basically say don’t worry about it, it’s nothing in the scheme of things, 50p a week.
I’m glad Mark did the research and decided to share it with us.
Sorry you were underwhelmed by the facts on this occasion.
Hi Mark,
Is there anything that can be done about these ads? It’s fairly annoying when you get half way through an article only for the page to refresh due to the ads on the page then having to scroll down to where you were. I also have had issues when I’m typing a comment only for the page to refresh and having to start all over again.
Regards
I get at least 3 crashes per page…it’s very annoying
My mobile browser fragments when trying to read an article – very annoying.
My little Pi-Hole takes care of all the nasty little ads….
And in line with the article, it uses very little power…
adblockplus – 0 power requirements 🙂
No Virgin Hub 3 data. A lot of us are still using this even though the Hub 5 is out.
I’ve measured mine with a calibrated power meter. It varies quite a bit depending on configuration (modem mode vs. router), VoIP telephony enabled or not, etc. With everything on I measured similar numbers to the SH4.
Yeah I was wondering what modem only mode on thd SH routers would be and I have a SH3. I already know that my PFsense router uses 8W as I measured the difference between it and the old m-itx Sandybridge based PC that I used (40W) to use to work out how long it would take to pay off the hardware in saved electric costs).
Just switch it off we need to go green betrer air stop leaving it on 24/7 no point the same you don’t leave your tv switched on 24/7 a day.
1. I do, I leave mine on standby who cares I can afford it.
2. The TV does not affect the transmitter’s power – A router will trigger DLM and kill the speed as the exchange will think there is a possible fault.
3. They are not remotely even widely relevant to each other.
A TV takes a few seconds to turn on, a router can take upwards of a minute or two. It’d be like going back to the dial-up days waiting for it to connect whenever you want to use it.
There are better and more meaningful ways to save energy and money than turning routers off. I do think this article serves a purpose in demonstrating how little energy they use in the context of a househould annual energy bill.
If you have a VOIP landline (and at the end of next year nearly everyone who wants a landline will) you won’t be turning off the router.
Why switch it off? I think if people need to save the cost that a router or router and ONT cost to run, then they are not going to have the internet in the first place.
If I turned mine off, then my VoIP, Alexas, outdoor cameras, thermostat and other things would also go off-line.
Anyway, with ADS; and FTTC it can cause problems.
While bending over to unplug mine I farted, now I have no internet and the air stinks, you lied.
For comparison, Starlink costs roughly 30p a day.
Mind uses about 40W when idle and around 101W when downloading – and you are correct.
For someone with Starlink you had quite a moan about being stuck on FTTC a couple of days back.
£35 a year is actually pretty good. Not really sure what the point of this article is. This plus ads. Site is going downhill
The point is that just because you aren’t interested, many people are.
I might add that you’ve apparently taken the time to whine that you’ve read a clearly titled article that isn’t of interest to you. If you’ve got that much time to spare then I’m sure there’s other high value uses for your time and commenting skills, such as repeats of Cash in the Attic, Bargain Hunt, decades old editions of Homes under the Hammer, and Police Interceptors featuring footage from 1994.
This completely shows that routers spend far too much cash therefore it’s much better to have them turned off!!
Not if you have a VOIP landline it isn’t.
Recent Utility costs prices may be no problem for the chunter heads in employment on average income and above (Who said average incomes in the Chancellor’s Surrey constituency ?) but for the rest of us . . . especially pensioners . . . its a different story
Still switch my router off at night and all the other kit on stand-by and if the refrigerators were made to a decent standard of insulation, I’d do that as well. The USB emergency/camping lights/Keyboard LEDS, in combination work a treat at anything between 2 and 4.5W an hour.
And after the gas central and water heating went phut, switched that off and rely on “On-demand” kettles and plug-in wall heaters.
Combined Electricity and Gas bill now well below the cap by several hundred pounds a year and comfort level unaffected, in fact localised thermostatically controlled heating is better and I have no need of a “Smart meter” and continue to refuse their frequent “Offers” (Who wants their limited personal cash flow disrupted by incorrect billing and randon date direct debiting when power costs are this high ?).
Horses for courses
As a pensioner, “Every little helps” . . especially this year as they’ve left the Income Tax personal allowance frozen.
Turning a fridge off overnight makes no difference to energy consumption as it just has to cycle on for longer to bring the box down to temperature when the power comes back on. If you’re happy to have your food stored at a higher temperature then adjust the thermostat rather than letting it warm up overnight. Since the heat removed from the box ends up on the radiators at the back to add heat to your kitchen, there are few appliances more efficient.
Both my parents are pensioners and they aren’t worried about money spent on utilities. Why? They have a smart meter and reduced cost tariff from octopus. They also take part in savings sessions. All their lighting is LED. You don’t need to go to such extremes for a few pence savings. Shop around.
The only time I’ve ever had billing issues was when I was on a standard meter due to “estimated” readings and then not being able to read the meter themselves. My smart meter has been entirely reliable.
Thanks to things like far more generous private and occupational pensions than most under 50 could dream of, housing costs and other things the average pensioner is now better off than the average person in work.
This ignoring the huge wealth gap and only focusing on disposable income.
Boomer generation will on average receive £130k more from the taxpayer than they put in throughout their lifetime. This alongside the enormous and entirely unearned wealth, again subsidised by those younger, largely for being born at the right time.
The chunter heads on average incomes and above subsidise the rest, especially pensioners.
“but for the rest of us . . . especially pensioners . . . its a different story”
Given the stonking pension rises under the triple lock, plus the various giveways like Warm Home Discount, Winter Fuel Payment, the one off Pensioner Cost of Living payment, I’m only hearing a very, very small violin. My elderly mother certainly spent her winter fuel payment on fuel. Jet fuel, for a month’s break in Australia.
Those of us still working are getting pay rises a fraction of the triple lock, stuff all help with bills, and watching our pensionable age recede into the future.
The article says about the usage at idle and at load, how on earth do you get a router to get up to the max?
Getting my router to stream a few things on different devices only got it to 40% CPU usage from 22%, it did go to 70% for a few seconds. Memory went from around 30% to 53%, and it made no difference whatsoever to power usage.
Still 16 watts, that is including the Echo unit, thermostat hub, a 4 port switch and a Zigbee hub as well as the router, but it did not change at all.
Dont use a router as speeds here are sub 10mbps but do use a mobile upto 100mbps.
Anyway, Just looking at the PC connected to the Watt Meter and its pulling 650w.
Ohh well.
If you don’t use a router, how do you connect your PC to the net or do you tether it to your phone?
One of the reason I decided to go for a Mac mini is because it uses less energy, when I am just doing stuff like this, it idles at around 10 watts, sometime Less, even at fall pelt it may hit 100 now and again. My Ryzen 7 1700 PC, will use over 150 when it is doing nothing.
I have to add on my monitors, which I use with both machines and I have a hub with two drives in for the Mac, but I doubt that takes much.
IT ALWAYS PUZZLES ME HOW FOLKS LOOK AT ENERGY BILLS.
A WATT IS A MEASURE OF ENERGY PER UNIT TIME OR 1 JOULE PER SECOND.
MORE WATTS EQUATES TO MORE ENERGY PER SECOND, OR HOUR ETC.
A KILOWATT-HOUR IS NOT KILOWATTS PER HOUR. IT IS THE PRODUCT: KILOWATT MULTIPLIED BY TIME. ARITHMETICALLY THIS BRINGS US BACK TO ENERGY.
ENERGY IS WHAT WHAT WE ALL GET BIILED-FOR (GAS OR ELECTRIC). WE PAY FOR THE NUMBER OF KILO-JOULES IN EFFECT.
AN ANALOGY IS TORQUE WHICH IS NEWTON-METRE, NOT NEWTON PER METRE AS SOME PEOPLE SAY.
Don’t shout.
Are you angry? No need to shout.
I know how to work out how much a device cost me to run, and we get charge by kWh, but the more watts a device use, the more it will cost to run.
I get it a kettle will use a lot of watts, but is only on for a couple of minutes, where a computer will use less, but is on for much longer.
The BT Smart Hub 2 I have, it if wasn’t being used for data transmission could be marketed as one of them ceramic plug-in electric fires. In winter its very warm and in summer can be too hot to touch. That’s wasted energy.
On the issue of the refrigerators, I think they are appaulingly designed, manufactured and insulated and the cooling effect is generally concentrated on the back-wall only – witness my under-counter, freestanding larder fridge. At the slightest provocation it will ice-up the back wall in summer when set on 70-80% of maximum, which is just enough to keep the cabin temperature near 10C. Without better cooling distribution (By a fan or cold sink “Arms” projecting up the sides), the thing will ice-up quickly necessitating the use of a pin hammer to take-off 3 solid inches of ice off the back wall after 6 weeks use between defrosts. My current larder (7 years old) came fitted as new with an incandescent cabin light and that was fitted in a blister which protruded inside the cabin and reduced storage space (Light was swapped out for LED PDQ). And the ones on sale today are all the same. Dreadful. Consumer goods designers . . . . Quanqueres (As Steve Bell’s Frenchman character would say).
I notice a friend’s EE router gets hot, very hot, in the summer it was a wonder it did not go pop.
something is no right in there, as you said, that is wasted energy. Their contract is up in a few months, and they are changing to ZZoomm, so they can get rid of it.
As for fridges, I though modern ones had better insulation, I got a new freezer last year and that certainly have better insulation than my old one and is frost free.
The fridge/freezer I have also got is a few years old now and while the insulation is not as good as the new unit, it has auto defrost for the fridge and have never froze up since i had it, but I do have to remember to poke something down the hole at the back now and again, otherwise it will get blocked and then water will leak into the fridge. The freezer part do need to be defrosted now and again.
when it goes belly up I will just get a fridge, i don’t need two freezers.
@Mark
Many thanks for this article. I religiously follow all of the news articles on this site but I also really enjoy these more journalistic articles.
This one covers something that I hadn’t really thought about and provided context that I will use in the future.
I appreciate your efforts.
Observations
1/ Would be useful to compare if 4G/5G broadband (to a fixed router) was similar wattage. e.g. Three 5G. At a guess I would expect a higher usage as such equipment is running more transmitters (Wifi side and 5g/4g side).
One might expect a MiFi hub to be a lot less power hungry (if plugged in permanently) but also wouldn’t handle the same workload
2/ To an extent, in the winter, heat dissipation from any tech in the home will corresponding reduce central heating demand to keep the room warm. Yes that tech driven heating may be using more expensive electric to replace gas (or coal, wood, or cheaper storage heater elec). So turning tech equipment off may not be saving as much as is often portrayed
3/ All electronics are “reactive” load (which current electric meters under-record, but future smart meters may be configured to accurately record), not resistive load. Volts x Amps = Watts calc is only accurate resistive load, and thus all the figures for the survey will be a few % out (on the low side). The correct calculation is more nuanced and needs more specialist measurement, and may or mauy not have been correctly assessed in published figures.
Not material in most cases, I agree.
NB I have always felt there was a potential market for distributed cloud computing located in/near domestic/commercial buildings where the waste heat from the cloud servers could be put to good use most of the year. The arrival of high speed FTTP would make this viable, if it could be packaged sensibly and securely (combined heat pump and cloud cabinet perhaps).
To clarify–distributed cloud computing (with a possibility of heat recovery) is now possible for bigger businesses, e.g. a shipping container in a car park to hold the servers, with the servers joined into a public cloud (i.e. Amazon AWS Outpost or Azure HCI) but exclusively used by the company funding the equipment and power. Or used as bare metal for private cloud/virtualised server farm.
But there is a significant barrier to entry, need to be a medium sized business to be able to procure, install and operate such equipment.