Green / Eco-Friendly

How many KWh do you use in a day?

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Quentin5 wrote:
Oct 4th, 2016 4:03 pm
onlineharvest wrote:
Oct 4th, 2016 9:49 am
I'm always amazed at the extremely low figures of some households. Crazy!

I was recently on vacation and I turned off everything that didn't need to run, the A/C didn't run at all during this time, I unplugged every electronic and small appliance and power bar. And yet, I was still averaging 4.5kwh/day - that's not far off from what people consume on average when home! :)

I work from home, and so does my wife 2-3 days/week. I'm around 30 kwh/day on average in the summer, and as low as 14 kwh/day in the non-summer months.

As impressed as I am with the power consumption of others, I really try to improve only on my own numbers while still maintaining a comfortable environment (in other words, I won't make a sacrifice to be uncomfortable when the bill would only be marginally less, I like a colder house than most, etc). That being said, I was consistently 40 kwh/day on average in the summer months the previous 3 summers, so I've cut that down to 30 kwh/day through some of my recent efforts. And overall, I'm consuming less electricity over non-summer months as well.
4.5kW/day is odd, you should find out whats causing it, because you obviously didn't need it while you were gone, so depending on the source if you can cut it your quality of life will not decrease.
Things that remained running/connected were: major kitchen appliances (fridge, stove, etc), internet modem and voip box, backup APC battery (for internet/voip setup), alarm (also connected to APC), and I set the A/C to 82F I believe (I doubt it ran when I was gone). Garage opener also still plugged in. Ummm, my smoke alarms and co detectors run on electrical power...

No TV/PC or powerbar was connected. No cell chargers. Coffee machine and small appliances disconnected. No lights left on.

What kind of draw would you expect (or actually get) when away on vacation? Kitchen appliances are fairly new (Fridge being the newest, only a couple years old).
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Fridge and stove clocks should use about 1W each, internet modem and voip could be anything but low wattage are available, backup battery should not be high, alarm i don't know but should not be high.
Fridge if new would be 1-2kW a day, hopefully closer to one since its not being opened.
To be honest i would expect about 1.5kWh/day max.
I suspect your AC did run, but no way to know without testing everything else

If you have a killawatt test everything, otherwise see if your local library gives them out (many do), or buy one

4.5kW/day is about $20-25 a month
What did you come here for?
I came here to complain
I'm sorry thats next door, its being hit on the head lessons in here...
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Quentin5 wrote:
Oct 4th, 2016 4:20 pm
Fridge and stove clocks should use about 1W each, internet modem and voip could be anything but low wattage are available, backup battery should not be high, alarm i don't know but should not be high.
Fridge if new would be 1-2kW a day, hopefully closer to one since its not being opened.
To be honest i would expect about 1.5kWh/day max.
I suspect your AC did run, but no way to know without testing everything else

If you have a killawatt test everything, otherwise see if your local library gives them out (many do), or buy one

4.5kW/day is about $20-25 a month
Even if I could halve that figure, there comes a point were the cost savings become marginal and the comfort/convenience is more important. I mean, every light bulb is LED in my house, I've raised the A/C temp a little this year, etc, so I'm doing what I can. I work from home so I'm consuming electricity when it's most expensive, and I can't avoid that.

Making measures to save $20/month or less, I'm not sure how much it's worth it.

Also worth mentioning my UPS is not a regular unit, but a Smart APC 3000 (2700 watts), and if I recall, requires a 30A plug (I needed an electrician to run a line just for it). :)
Also forgot I'm running a pfSense box, so there's that too.
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onlineharvest wrote:
Oct 4th, 2016 4:31 pm
Quentin5 wrote:
Oct 4th, 2016 4:20 pm
Fridge and stove clocks should use about 1W each, internet modem and voip could be anything but low wattage are available, backup battery should not be high, alarm i don't know but should not be high.
Fridge if new would be 1-2kW a day, hopefully closer to one since its not being opened.
To be honest i would expect about 1.5kWh/day max.
I suspect your AC did run, but no way to know without testing everything else

If you have a killawatt test everything, otherwise see if your local library gives them out (many do), or buy one

4.5kW/day is about $20-25 a month
Even if I could halve that figure, there comes a point were the cost savings become marginal and the comfort/convenience is more important. I mean, every light bulb is LED in my house, I've raised the A/C temp a little this year, etc, so I'm doing what I can. I work from home so I'm consuming electricity when it's most expensive, and I can't avoid that.

Making measures to save $20/month or less, I'm not sure how much it's worth it.

Also worth mentioning my UPS is not a regular unit, but a Smart APC 3000 (2700 watts), and if I recall, requires a 30A plug (I needed an electrician to run a line just for it). :)
Also forgot I'm running a pfSense box, so there's that too.
I agree but saving $20-25 a month for little to no loss is up to $300 a year in free money, i like free money Winking Face
What does your APC 3000 unit do that needs so much juice?
Also what is a pfSense box?
What did you come here for?
I came here to complain
I'm sorry thats next door, its being hit on the head lessons in here...
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I would actually be curious to see what people's power consumption is when on vacation. I was doing some quick reading online and while my 4.5/day isn't obscene, I hardly found anyone who was sub 2/day. In fact, on some energy detective site, where I imagine people are actively trying to lower their consumption, the largest pie in their poll was 6+/day.
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Quentin5 wrote:
Oct 4th, 2016 4:37 pm
onlineharvest wrote:
Oct 4th, 2016 4:31 pm
Quentin5 wrote:
Oct 4th, 2016 4:20 pm
Fridge and stove clocks should use about 1W each, internet modem and voip could be anything but low wattage are available, backup battery should not be high, alarm i don't know but should not be high.
Fridge if new would be 1-2kW a day, hopefully closer to one since its not being opened.
To be honest i would expect about 1.5kWh/day max.
I suspect your AC did run, but no way to know without testing everything else

If you have a killawatt test everything, otherwise see if your local library gives them out (many do), or buy one

4.5kW/day is about $20-25 a month
Even if I could halve that figure, there comes a point were the cost savings become marginal and the comfort/convenience is more important. I mean, every light bulb is LED in my house, I've raised the A/C temp a little this year, etc, so I'm doing what I can. I work from home so I'm consuming electricity when it's most expensive, and I can't avoid that.

Making measures to save $20/month or less, I'm not sure how much it's worth it.

Also worth mentioning my UPS is not a regular unit, but a Smart APC 3000 (2700 watts), and if I recall, requires a 30A plug (I needed an electrician to run a line just for it). :)
Also forgot I'm running a pfSense box, so there's that too.
I agree but saving $20-25 a month for little to no loss is up to $300 a year in free money, i like free money Winking Face
What does your APC 3000 unit do that needs so much juice?
Also what is a pfSense box?
Heh! I agree with free money, but there is a sacrifice/cost for everything.

The APC is just large capacity (required for me to work at home, voip phone must be available - and still works through a power outage - because even the rogers internet boxes are connected to it).

pfSense is router/small server :) Used to manage the internal network, VPN, Voip services, etc - that's my main router for the home/biz
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onlineharvest wrote:
Oct 4th, 2016 4:39 pm
I would actually be curious to see what people's power consumption is when on vacation. I was doing some quick reading online and while my 4.5/day isn't obscene, I hardly found anyone who was sub 2/day. In fact, on some energy detective site, where I imagine people are actively trying to lower their consumption, the largest pie in their poll was 6+/day.
In my case on vacation i can do with a fridge and a few LED/CFL lights. I'll be able to get to under 1kWh/day when the fridge is replaced, hopefully next year.
My biggest energy suckers are the dehumidifier (season depending, and needing house repair), fridge, central air and computer. LED lights, microwave, and stove are small potatoes (gas stove).
What did you come here for?
I came here to complain
I'm sorry thats next door, its being hit on the head lessons in here...
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onlineharvest wrote:
Oct 4th, 2016 4:43 pm
Quentin5 wrote:
Oct 4th, 2016 4:37 pm
onlineharvest wrote:
Oct 4th, 2016 4:31 pm


Even if I could halve that figure, there comes a point were the cost savings become marginal and the comfort/convenience is more important. I mean, every light bulb is LED in my house, I've raised the A/C temp a little this year, etc, so I'm doing what I can. I work from home so I'm consuming electricity when it's most expensive, and I can't avoid that.

Making measures to save $20/month or less, I'm not sure how much it's worth it.

Also worth mentioning my UPS is not a regular unit, but a Smart APC 3000 (2700 watts), and if I recall, requires a 30A plug (I needed an electrician to run a line just for it). :)
Also forgot I'm running a pfSense box, so there's that too.
I agree but saving $20-25 a month for little to no loss is up to $300 a year in free money, i like free money Winking Face
What does your APC 3000 unit do that needs so much juice?
Also what is a pfSense box?
Heh! I agree with free money, but there is a sacrifice/cost for everything.
Including not taking advantage of free money ;)
I do agree that driving yourself nuts when its unnecessary is sweating the small stuff, but i am willing to put in effort for reward, depending on necessity and effort required.
The APC is just large capacity (required for me to work at home, voip phone must be available - and still works through a power outage - because even the rogers internet boxes are connected to it).

pfSense is router/small server :) Used to manage the internal network, VPN, Voip services, etc - that's my main router for the home/biz
So a business expense, hard to eliminate in your case, and rather unique to your situation.
What did you come here for?
I came here to complain
I'm sorry thats next door, its being hit on the head lessons in here...
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Quentin5 wrote:
Oct 4th, 2016 4:46 pm
onlineharvest wrote:
Oct 4th, 2016 4:43 pm
Quentin5 wrote:
Oct 4th, 2016 4:37 pm


I agree but saving $20-25 a month for little to no loss is up to $300 a year in free money, i like free money Winking Face
What does your APC 3000 unit do that needs so much juice?
Also what is a pfSense box?
Heh! I agree with free money, but there is a sacrifice/cost for everything.
Including not taking advantage of free money ;)
I do agree that driving yourself nuts when its unnecessary is sweating the small stuff, but i am willing to put in effort for reward, depending on necessity and effort required.
The APC is just large capacity (required for me to work at home, voip phone must be available - and still works through a power outage - because even the rogers internet boxes are connected to it).

pfSense is router/small server :) Used to manage the internal network, VPN, Voip services, etc - that's my main router for the home/biz
So a business expense, hard to eliminate in your case, and rather unique to your situation.
I like free money too! You should have seen my consumption a few years ago! Yikes! I don't remember the count, but I have at least 65 pot lights in the house, and most of them were always on, and each was 35W (I realized after some were even 50W!). I did see a nice drop after investing in LED for all of them (and the cost was very low too, after rebates something like $2-3 per bulb, regular price at the time $15) - SO I'M DOING SOMETHING! :)

Yeah, the other stuff is business related so obviously necessary. Doesn't mean I can't possibly upgrade to a different UPS in the future if I find this setup is overkill for my needs. Always room to improve, but yes, I won't go nuts.

Being under 1 kwh/day while on vacation, *Princess Bride*... UNFATHOMABLE! I think if I lived in a cave I would still consume more electricity than you! :) That's very impressive.
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onlineharvest wrote:
Oct 4th, 2016 4:52 pm
Quentin5 wrote:
Oct 4th, 2016 4:46 pm
onlineharvest wrote:
Oct 4th, 2016 4:43 pm


Heh! I agree with free money, but there is a sacrifice/cost for everything.
Including not taking advantage of free money ;)
I do agree that driving yourself nuts when its unnecessary is sweating the small stuff, but i am willing to put in effort for reward, depending on necessity and effort required.
The APC is just large capacity (required for me to work at home, voip phone must be available - and still works through a power outage - because even the rogers internet boxes are connected to it).

pfSense is router/small server :) Used to manage the internal network, VPN, Voip services, etc - that's my main router for the home/biz
So a business expense, hard to eliminate in your case, and rather unique to your situation.
I like free money too! You should have seen my consumption a few years ago! Yikes! I don't remember the count, but I have at least 65 pot lights in the house, and most of them were always on, and each was 35W (I realized after some were even 50W!). I did see a nice drop after investing in LED for all of them (and the cost was very low too, after rebates something like $2-3 per bulb, regular price at the time $15) - SO I'M DOING SOMETHING! :)
No worries, i have helped many people switch from halogen to CFL and LED, it saves a lot of coin, the more hours you use it the higher the savings, multiplication can really bite people in the rear end.
Yeah, the other stuff is business related so obviously necessary. Doesn't mean I can't possibly upgrade to a different UPS in the future if I find this setup is overkill for my needs. Always room to improve, but yes, I won't go nuts.

Being under 1 kwh/day while on vacation, *Princess Bride*... UNFATHOMABLE! I think if I lived in a cave I would still consume more electricity than you! :) That's very impressive.
Thanks, i've been a conservation specialist for many years so i breathe killowatts and LED bulbs. Almost everything i own has been tested for energy use and labelled Smiling Face With Open Mouth
Incidentally i have bought hundreds upon hundreds of LED bulbs, and every time i need one i can't find any, i have to stop giving them away.
What did you come here for?
I came here to complain
I'm sorry thats next door, its being hit on the head lessons in here...
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Lake Simcoe
13 year old 1500 sq ft bungalow oil heat/oIl hot water/well pump/sump pump/Ontario.

--Replaced 55 incandescent bulbs with 11w (Dollarama) LED bulbs Oct '14
--Replaced Plasma 50" TV with 55" LED in late Jan '15
--Replaced 10 yr old Fridge (Quit working) early June '15 with similar "low energy" model.

Starting July 2014 to present.
Month/Monthly kW/Daily kW/ $ COST of Electricity (BEFORE delivery,taxes,debt etc)
July 2014 544 / 17.6 / $50.44
Aug 2014 503 / 16.2 / $46.88
Sept 2014 499 / 16.6 / $49.83
Oct 2014 442 / 14.3 / $41.89
Nov 2014 543 / 18.1 / $50.15
Dec 2014 582 / 18.8 / $54.56
Jan 2015 484 / 15.6 / $44.84
Feb 2015 358 / 12.8 / $34.27
Mar 2015 326 /10.5 / $30.73
Apr 2015 244 / 8.1 / $24.05
May 2015 223 / 7.2 / $22.51
June 2015 195 / 6.5 / $20.95
July 2015 265 / 8.6 / $28.87
Aug 2015 231 / 7.5 / $24.70
Sept 2015 365 / 12.1 / $37.20
Oct 2015 387 / 12.5 / $38.18
Nov 2015 345 / 11.5 / $36.34
Dec 2015 327 / 10.5 / $34.98
Jan 2016 378 / 12.2 / $39.77
Feb 2016 343 / 11.8 / $36.22
Mar 2016 339 / 11.0 / $36.98
Apr 2016 265 / 8.8 / $22.87
May 2016 212 / 6.8 / $22.49
June 2016 191 / 6.4 / $21.60
July 2016 250 / 8.1 / $28.07
Aug 2016 295 / 9.5 / $38.67
Sept 2016 212 / 7.1 / $24.35

Overall, I'm using 7-10kw per day LESS than my average usage 24 months ago....and no, I don't live in a cave! LOL.
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Average of 11.55kwh per day (period from August 24-September 23) ... Oshawa ... just me and the wife ... 1800sq ft , 2-story , detached , unfinished basement

- electric stove
- gas rental water heater
- all bulbs in house are LED / Energy Efficient ...

- Air Conditioner ... not really used at all unless we have visitors over ...
- Dryer ... basically don't use it ... hang laundry in the backyard or in basement by the furnace (this will be even better in the winter)
- Dishwasher ... basically don't use it unless we have a house party ... just handwash the dishes and put them in the dishwasher with door open and trays out to air dry

1) Turn lights off when not using them. Leave a room turn it off. Install Dimmers if possible.
2) Summer ... set your thermostat to at least 26.5 degrees or higher if you have AC on automatic when you are not home. Program the thermostat to turn it on about 1 hour before coming home to about 22.5 degrees. You don't need to live in a cold room.
3) Winter ... set your thermostat to at least 16.5 degrees if you have heat on automatic when you are not home. Program the thermostat to turn it on about 1 hour before coming home to about 21.5 degrees. When you get home .. change into something that has some fleece ... it's warmer so you don't need to waste gas / electricity.
4) Screw the outdoor lights! You don't need them on at night ... use motion sensor lights with LED bulbs.
5) If you are watching TV and then need to step out of the house to get something ... don't pause the show ... shut it down! It applies to computers as well ... most programs that download will resume at the spot you ended the connection.
6) Use electricity after 7pm or weekends as much as possible. It's the cheapest. I mow my lawn on weekends. Charge your batteries or any rechargeable stuff when rates are cheap.
7) Use standing lamps with LEDs instead of a massive chandelier ...
8) Install LED Strips under kitchen cabinets ... they are extremely bright!
9) In the basement ... install LED Strips in the furnace room (normally you should have the white washing tub there too ... bright ... saves electricity) ... if the freezer is there, even better! You have all the necessary lighting.
10) Lighting in wall units ... do you really need them on every night? Realistically ... NO
11) Night Lights ... use the ones that have a sensor that turn on at night automatically ... these are cheap! I have 3 around the house ... bought them on eBay ... cost USD$4 for 3 of them.
12) unplug appliances that are not being used ... ie ... coffeemaker / toaster / mini-oven
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Decided to calculate my actual cost per kW after all charges including delivery taxes etc. (Invoice total)
Total charges / total kW usage over previous 12 months. (Nov-Oct)

$1272.08 / 3498.1kW = $0.364/kW.
3498.1kW / 365 days = 9.6kW/day. ($3.49/day)
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love2save wrote:
Oct 26th, 2016 7:15 am
Decided to calculate my actual cost per kW after all charges including delivery taxes etc. (Invoice total)
Total charges / total kW usage over previous 12 months. (Nov-Oct)

$1272.08 / 3498.1kW = $0.364/kW.
3498.1kW / 365 days = 9.6kW/day. ($3.49/day)
I used your formula and mine came out much lower. My TOU split is 72.5% (off), 13.9% (mid), 13.7% (on)

$1042.81 / 5436.3kW = $0.192/kW.
5436.3kW / 365 days 368 days = 14.89kW/day 14.77kW/day. ($2.86/day $2.83/day)

Edit: should be 368 days based on my last 12 month invoices. Sept 25 2015 to Sep 26 2016
Last edited by bubuski on Oct 26th, 2016 6:54 pm, edited 4 times in total.
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bubuski wrote:
Oct 26th, 2016 1:29 pm
I used your formula and mine came out much lower. My TOU split is 72.5% (off), 13.9% (mid), 13.7% (on)

$1042.81 / 5436.3kW = $0.192/kW.
5436.3kW / 365 days = 14.89kW/day. ($2.86/day)
Our numbers are quite similar from a cost point of view, but my usage is lower though higher TOU charges. Data for 12-month period Sep-2015 until Aug-2016. My TOU split is 69.1% (off), 15.4% (mid), 15.5% (peak)

$1029.81 / 4462.0 kWh = $0.2308/kWh.
4462.0 kWh / 366 days = 12.19kWh/day ($2.81/day)
4462.0 kWh / 12 months = 371.83kWh/month ($85.82/month)

I live in the city, ~1,000sq.ft 1917 2br semi-detached w/ basement, no weekday occupancy, AC @ ~23°C, Heat at ~20°C, gas stove, gas water, gas dryer, gas heat, minimal 24/7 load (NAS, PVR, etc.), LEDs all around, 1 adult, extensive evening PC/TV/stereo usage, extensive use of HVAC circulating fan in evenings.
Last edited by hoob on Oct 27th, 2016 1:27 pm, edited 2 times in total.
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