Hi Dustin, I'm curious to see in the future how your repayment period looks for those electrification projects. I have an upstairs gas-powered water heater and was told it would cost a fortune to switch it to electric tankless.
I haven't studied this closely yet but my guess is much longer. Gas is cheap here and my water heating cost is already around $10 per month. Even getting that to zero would take awhile to pay back a newly installed water heater. Something that I want to quantify in the future though.
Do you happen to have a similar study from earlier when you did not have EV charging and/or were not running AC? Curious to see what pops up there when this skew does not exist, because most families do not have EV charging at home. Also, I'm assuming the dryer/refrigerator appliances are HighEfficiency models? I think your data will make a great case for rest of the people to adopt these at their homes and complete that transition.
They are all high efficiency so that probably plays a role! I did look at days where I didn't run the AC or EV charger and it was just pretty noisy. You could see things like the fridge cycle and dryer cycle by they were brief spikes up to 1kW or so. The dehumidifier runs constantly in humid weather so that cycle really shows up well.
Nice.. thanks! Are the AC spikes corresponding to a "start up" of the AC system or is it maintaining a steady narrow temperature range through the day?
Because the AC is on a different circuit than solar, I don't have that resolution. I wish I did! Maybe I can get a device for that.
For the fridge it spikes when the compressor kicks on it looks like and the dryer is when the heating element is on. These last only a minute or two it looks like. I can see the fridge spike more when the fridge is empty which is a cool result!
Yep! Trial and error basically. Turn on all the fans for a day, turn them off the next day. The dehumidifier was tricky to sort out because I forgot it was there until late in the month.
Gotcha. Shame theres no little device you can plug in between the device and socket to give you data via wifi (or maybe there is!). Sucks the aircon is on a different circuit. Can that change or no?
Yep they make devices to track individual sockets but when I realized the consumption was mostly driven by the EV and AC, I didn't set that up. Maybe a future home study!
The AC can be added to solar for sure, I just didn't size the array for it so I kept it separate
Hi Dustin, I'm curious to see in the future how your repayment period looks for those electrification projects. I have an upstairs gas-powered water heater and was told it would cost a fortune to switch it to electric tankless.
I haven't studied this closely yet but my guess is much longer. Gas is cheap here and my water heating cost is already around $10 per month. Even getting that to zero would take awhile to pay back a newly installed water heater. Something that I want to quantify in the future though.
Very cool Dustin, your data speaks volumes!
Do you happen to have a similar study from earlier when you did not have EV charging and/or were not running AC? Curious to see what pops up there when this skew does not exist, because most families do not have EV charging at home. Also, I'm assuming the dryer/refrigerator appliances are HighEfficiency models? I think your data will make a great case for rest of the people to adopt these at their homes and complete that transition.
They are all high efficiency so that probably plays a role! I did look at days where I didn't run the AC or EV charger and it was just pretty noisy. You could see things like the fridge cycle and dryer cycle by they were brief spikes up to 1kW or so. The dehumidifier runs constantly in humid weather so that cycle really shows up well.
Nice.. thanks! Are the AC spikes corresponding to a "start up" of the AC system or is it maintaining a steady narrow temperature range through the day?
Because the AC is on a different circuit than solar, I don't have that resolution. I wish I did! Maybe I can get a device for that.
For the fridge it spikes when the compressor kicks on it looks like and the dryer is when the heating element is on. These last only a minute or two it looks like. I can see the fridge spike more when the fridge is empty which is a cool result!
Love this mate. Cant you tell how you identified each device's consumption or is it based purely on putting it on and testing for spikes?
Yep! Trial and error basically. Turn on all the fans for a day, turn them off the next day. The dehumidifier was tricky to sort out because I forgot it was there until late in the month.
Gotcha. Shame theres no little device you can plug in between the device and socket to give you data via wifi (or maybe there is!). Sucks the aircon is on a different circuit. Can that change or no?
Yep they make devices to track individual sockets but when I realized the consumption was mostly driven by the EV and AC, I didn't set that up. Maybe a future home study!
The AC can be added to solar for sure, I just didn't size the array for it so I kept it separate