#1 Feb. 13, 2014 12:11:00

morrisok
From: Sussex
Registered: 2011-11-09
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Individiual Appliance Usage


Hi,


I spend a bit too much time monitoring my solar panel generation and my homes usage and recently got an monitor that looks at individual appliance usage.


Had some interesting results, I wrote a blog post about it on my wifes blog.  Thought some people might be interested in it.


http://www.ecothriftyliving.com/2014/02/how-hungry-is-your-appliance.html





Kevin 3.92KWp 12x 327W E20 SunPower panels Sunnyboy 4000 inverter, facing ~south, no shading issues. Location: Sussex, URN 131 http://pvoutput.org/intraday.jsp?id=12216sid=10156







Kevin

URN 131, 3.92KWp 12x 327W E20 SunPower panels Sunnyboy 4000 inverter, facing ~south, no shading issues. Location: Sussex, http://pvoutput.org/list.jsp?userid=12216

Edited morrisok (Feb. 13, 2014 12:11:00)

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#2 Feb. 14, 2014 08:34:00

bhommels
Registered: 2011-10-03
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Individiual Appliance Usage


Nice blog post. Shortly after buying our OWL energy monitor, I started to minimize background usage. I have not gotten as far as doing away with the fridge, so daily usage is now below 2 kWh when we are out. What annoys me no end is companies providing services such as telephone, TV and internet telling me to leave their receivers/hubs/routers etc on at night!





Edited bhommels (Feb. 14, 2014 08:34:00)

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#3 Feb. 14, 2014 09:19:00

morrisok
From: Sussex
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Individiual Appliance Usage


Thanks,


Wow, 2kw a day is amazing.  What have you got running and what did you turn off that made such a difference.


It really struck home to me how much my fish are costing me, pond + tropical tank before I even started with buying new fish, treatments or plants.





Kevin 3.92KWp 12x 327W E20 SunPower panels Sunnyboy 4000 inverter, facing ~south, no shading issues. Location: Sussex, URN 131 http://pvoutput.org/intraday.jsp?id=12216sid=10156







Kevin

URN 131, 3.92KWp 12x 327W E20 SunPower panels Sunnyboy 4000 inverter, facing ~south, no shading issues. Location: Sussex, http://pvoutput.org/list.jsp?userid=12216

Edited morrisok (Feb. 14, 2014 09:19:00)

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#4 Feb. 14, 2014 10:49:00

Britta
Registered: 2014-01-09
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Individiual Appliance Usage


Nice blog post, Kevin. I really like your idea of passing on the device to others, I can see that becoming a really interesting conversation to have.


I'm curious about what you ended up changing after the experiment?


And I also think 2kw a day sounds like a great achievement?


In case you haven't seen this report, it has a few interesting things, but I'm missing information on electric toothbrushes - have you checked one of them by any chance?


http://www.energysavingtrust.org.uk/Publications2/Corporate/Research-and-insights/Powering-the-nation-household-electricity-using-habits-revealed


Britta





Edited Britta (Feb. 14, 2014 10:49:00)

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#5 Feb. 14, 2014 10:50:00

Britta
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Individiual Appliance Usage


btw, if you still have the device - I've been dying to know how much PV monitoring devices take? ;-)





Edited Britta (Feb. 14, 2014 10:50:00)

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#6 Feb. 14, 2014 11:04:00

morrisok
From: Sussex
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Individiual Appliance Usage


I've got 2 PV monitoring devices


1. Sunnybeam, which connects to the inverter by bluetooth.  Its powered by rechargable battery but also has a solar panel on the back to keep it topped up.  I charge it via my PC once every 4 months or so.


2. Eco-Eye, this comes with batterys which I havn't had to change yet, transmitter or reciever, will probably get rechargable ones next.


So basically the PV monitoring devices I have hardly use any electricity at all.


Kevin 3.92KWp 12x 327W E20 SunPower panels Sunnyboy 4000 inverter, facing ~south, no shading issues. Location: Sussex, URN 131 http://pvoutput.org/intraday.jsp?id=12216sid=10156







Kevin

URN 131, 3.92KWp 12x 327W E20 SunPower panels Sunnyboy 4000 inverter, facing ~south, no shading issues. Location: Sussex, http://pvoutput.org/list.jsp?userid=12216

Edited morrisok (Feb. 14, 2014 11:04:00)

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#7 Feb. 14, 2014 18:53:00

avalanche
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Individiual Appliance Usage


Britta,





I have a GEO Chorus II.  It uses 2.5W.  In other words, “they've thought about it!”


Avalanche








Edited avalanche (Feb. 14, 2014 18:53:00)

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#8 Feb. 14, 2014 22:45:00

rogerhoward
From: Southend
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Individiual Appliance Usage


My solar-inclusive daily usage is currently running at about 8.6kWh/day.


But speaking on your blog about your base load reminded me that the figure seems to be lower on days/weeks/months of relatively high generation, i.e. when the solar usage component is relatively high.


Does anyone have any ideas why this should be so? I find it mighty difficult to pin down my last few dozen kW's!







Economy 10 tariff provides 6.9p/kWh off-peak import between 12am-5am, 1pm-4pm and 8pm-10pm; http://www.pvoutput.org/aggregate.jsp?id=21047&sid=18934&v=2&t=m on approx. 63% off-peak usage, 22% solar usage, and 15% peak-rate usage.
1,900kWh annually is exported, mostly in summer, on approx. 3,200kWh generation. Approx. 4,500kWh/year is imported, mostly for (a) winter and springtime off-peak Storage Heaters, and (b) off-peak hot water Immersion heating (which is “dumb”, i.e. not linked to the solar PV).
PV array is split East-West. Income is from Phase II 21p/kWh Feed-in-Tariff plus smart metered 3.2p/kWh Export Tariff.

Edited rogerhoward (Feb. 14, 2014 22:45:00)

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#9 March 22, 2014 10:29:00

rogerhoward
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Individiual Appliance Usage


I have a particularly unruly freezer, that won't listen when I tell him that I haven't got a spare 1kW for him and thinks he can just kick-in at any time that he feels like it. I bought myself for a fiver a simple plug scheduler thinking that I'd reign him in a bit at this time of year. But I'm finding that the morning's weather forecast isn't accurate enough time-wise. So before going out, I'm scheduling it for mostly the wrong times!


Ah well, I guess Clint was right; a man's just got to know his limitations.







Economy 10 tariff provides 6.9p/kWh off-peak import between 12am-5am, 1pm-4pm and 8pm-10pm; http://www.pvoutput.org/aggregate.jsp?id=21047&sid=18934&v=2&t=m on approx. 63% off-peak usage, 22% solar usage, and 15% peak-rate usage.
1,900kWh annually is exported, mostly in summer, on approx. 3,200kWh generation. Approx. 4,500kWh/year is imported, mostly for (a) winter and springtime off-peak Storage Heaters, and (b) off-peak hot water Immersion heating (which is “dumb”, i.e. not linked to the solar PV).
PV array is split East-West. Income is from Phase II 21p/kWh Feed-in-Tariff plus smart metered 3.2p/kWh Export Tariff.

Edited rogerhoward (March 22, 2014 10:29:00)

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#10 March 28, 2014 10:49:00

martint123
Registered: 2013-01-09
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Individiual Appliance Usage


I have one of the e.on supplied clip-on energy monitors (badged owl?) and have a PC logging it and generation to pvoutput.org


I loaned the power monitor to friend for a couple of weeks but he said it was inaccurate compared to some commercial monitor he tested it against. 


He said it was to do with it not taking into account power factor and gave exagerated readings for some inductive loads like motors and wall chargers with real transformers.


It will have to do for me and I'll give up trying to reduce the “floor” dark consumption.





Edited martint123 (March 28, 2014 10:49:00)

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