• @[email protected]
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    76 days ago

    A $400 bill at $0.50 per kwh is 800 kwh. Our electricity usage in the month of August was 787 kwh. I wired an energy meter into my circuit panel a month ago, so I can break that down:

    • 210 kwh for EV charging. I don’t drive a ton and can also charge at work sometimes. This is 27% of our total
    • 130 kwh for AC. We live in SE MI, so it’s not hot. We keep our AC set to 75 when it’s on. These two combined are now 40% of our bill
    • 62 kwh for my work desk (hybrid work) and deep freeze
    • 61 kwh for our furnace blower motor. This one surprised me. We were leaving it on the low setting to equalize temperature. On the low speed it pulls 500 watts, or 12 kwh/day. It obviously pulls more power when the AC is on
    • 61 kwh for our fridge
    • 28 kwh for our washing machine and gas dryer
    • now we’re in odds and ends territory. 17 kwh for our instant Hot water (tea), 12 kwh for our sump pump and dehumidifier, 11 for our dishwasher, 8 for the TV (old fluorescent)/garage/ps5/modem/route, 7 for the microwave
    • another 100 or so that doesn’t have a clamp on the breaker

    If you don’t have an EV and you’re really keeping your AC at 84 I strongly suspect you have a failing appliance. Unless you live in Phoenix and have a massive and very poorly insulated house or something.

    During covid (I was doing remote work, so basically no EV charging), our old dishwasher finally stopped working with a dryer heater error code. When we replaced it our electric bill fell by a double digit percentage (I want to say 20%+) year over year.

    As for things like insulation, going from 3" of 1969 insulation to a massive quantity of blown in helped our winter heating bill (gas) a lot more than our summer AC bill.

    Good luck!

    • @[email protected]
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      46 days ago

      Sorry to ask, why’re you equalizing temperature?

      i feel the AC goes on when it’s hot or warm and the blast furnace goes on when it’s cold, is there a particular advantage as to why you’re doing it this way?

      • @[email protected]
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        26 days ago

        It was mostly for our younger kids. We live in a smaller ranch, so we close their doors after they’re asleep so we don’t have to worry about waking them up. This made one of their rooms a bit warmer In the summer and a bit cooler in the winter.

        I should probably try balancing the ducts to compensate and might do that this winter.

    • @[email protected]
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      26 days ago

      How did you get the breakdown? We have a really old panel and may be looking at getting a new one in the next year. Would love to be able to see the breakdowns and figure out where it’s going. FWIW, in PG&E territory.

      • @[email protected]
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        26 days ago

        Look up “home energy monitor”. They install inside your panel. The one we have has a bunch of current clamps, but not enough for our huge panel, so I chose what I thought our more heavily used circuits were. It also measures line voltage. Voltage x current = bingo. I’m not completely sure how I feel about the one I bought, so I’m not going to call it out. I wish it flagged trends per circuit over time to catch things like failing appliances. I could root it and mod it, but it would be nice if it did it out of the box. Catching a failing appliance would more than pay for the device, even if you do it by hand by simply tracking the data. It has slightly changed our habits (see: the furnace blower that we left on all the time and was pulling a constant 500 watts aka 12 kwh/day aka 360 kwh/mo), but I wouldn’t expect to find anything crazy unless you have high usage.

        • @[email protected]
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          26 days ago

          Thanks! Looks like lots of options out there.

          Our power panel is old and we’ve been advised it may need replacing. I briefly looked at Span panels, with built-in energy monitoring, but they’re not cheap. These monitors look like you at least get the data at a much more reasonable price.

    • mesamuneOP
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      6 days ago

      Thanks! Phoenix is close to our weather, although this week is not a good example thank God. Its regularly over 110 most days of the summer. I have one of the watt meters + a raspberry pi that monitors our watts in real time and can tell what appliances take up the most power. The vast majority of the bill is the AC. In winter, we sip power. Our gas is actually more then.

      I’m currently pulling 218 watts right now (fridge/2 laptops/small server/two pis/2 meshtastic devices/one light/ and a host of zombie power devices) and will pull a little over 3kw when the AC is on. And with the tier based system that PGE has, it means months where you do actually use the ac, they jack up the price at the worst possible times. Its closer to 60c per kilowatt hour before fees. And its going up again this year for the 4rth time…

      • @[email protected]
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        26 days ago

        If the biggest portion of your bill is AC and you live in a hot area the only things I could think of are planting some trees if they’ll grow and using a programmable thermostat to shift your usage away from off peek as best you can.

        • mesamuneOP
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          26 days ago

          Yep that’s an excellent idea.

          There’s also solar ac’s that have started to catch on. I’m taking a look but they seem too new so I’m waiting a bit.