• Agent641@lemmy.worldOP
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      2 months ago

      Its a 400w array permanently mounted to the roof. Its been continually topping up my lithium batteries since 2018.

      It probably would have hit 1MWh sooner, but the batteries are almost always full so there’s nowhere to store the excess charge.

      • dirtbiker509@lemm.ee
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        2 months ago

        I’ve done a similar build out in my Northern Lite camper. 800w on the roof and 400ah of lithium. I want to convert the fridge to an electric compressor fridge and the stove over to induction next. I hate it when the batteries fill back up by 10am and I waste solar meanwhile I am still buying propane for the appliances.

        • Frater Mus@lemmy.sdf.org
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          2 months ago

          the stove over to induction next. I hate it when the batteries fill back up by 10am and I waste solar meanwhile I am still buying propane for the appliances.

          It’s possible. For the 11 months I’ve been cooking from excess solar power (December is a little short). I still carry propane for heating and a few things that seem to work better over flame.

      • ForgotAboutDre@lemmy.world
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        2 months ago

        The gas analogy isn’t very good because cars are very inefficient at turning gas into power. So it’s substantially more than 31 gallons worth in a car.

      • antlion@lemmy.dbzer0.com
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        2 months ago

        Yeah humans burn about 100W so it’s like 60 weeks of human metabolism, more than a year of food energy!

        If the van had a generator, like days of old, the sun has replaced like 3 full tanks of gas.

  • I_Miss_Daniel@lemmy.world
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    2 months ago

    My roof top system has done a bit.

    I’ve been able to store a bit to use at night into several old AGM batteries.

    Just moved from Starlink to 5G so that’s another kW per day I’m saving.

  • noobnarski@feddit.de
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    2 months ago

    Thats a little bit less than my solar house install has produced in the last year, and it was only up for half of it.

    Just imagine how much fossil fuels we could save if everyone had solar on their roofs and if wind power would be more widespread as well.

    • Flying Squid@lemmy.world
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      2 months ago

      It’s still just too unaffordable for many people. It would cost us over $10,000 to get panels installed and that doesn’t include the multiple trees that would have to come down because they are really old oak trees with huge branches that stretch over the house and sometimes fall on the roof.

      There should be much bigger subsidies. That wouldn’t help us, but it would help a lot of others.

    • MNByChoice@midwest.social
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      2 months ago

      Yes! Every bit helps.

      The more people thay buy in, the more optimized the production and distribution becomes.

      Thanks for helping in the way that you can.

    • whereisk@lemmy.world
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      2 months ago

      Only if or when storage becomes cheap and widespread, otherwise even if you produced 100x the energy when the Sun shines you’d still need some other source of energy for the rest of the time. There are some glimmers of hope but they perpetually seem 4-5 years out.

      • noobnarski@feddit.de
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        2 months ago

        I have 10kwh of storage, which helps a lot, and it wasnt that expensive, especially compared to a few years ago.

        Now that sodium ion batteries are actually starting to become available we will see them taking over stationary storage, but for now LiFePo4 works pretty good.

  • walden@sub.wetshaving.social
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    2 months ago

    That’s really cool. My shed is at 18kWh after a few months. I don’t use much so most days it just keeps the battery on float.

  • Hugin@lemmy.world
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    2 months ago

    Nice. I managed to make my house almost power neutral. It would be power positive but i have a EV.

    • Sizzler@slrpnk.net
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      2 months ago

      That’s great, really exciting to be able to gain power self-sufficiency, especially with transport as well.

    • cordlesslamp@lemmy.today
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      2 months ago

      how much do you invested in your solar system? I’m trying to convince my wife to install a solar roof (no battery), but I’m doing the math and it would take 8-10 years to barely break even (if nothing critical breaks down during that time).

      • Hugin@lemmy.world
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        2 months ago

        $16K in parts, PE drawings and tree removal. With 30% of that back in tax rebate. I did the install myself with help from my wife. 11.64KW DC worth of panels. Anything more than 11.7KW and I would have gone from class 1 to class 2. I didn’t want to deal with all that required.

        My degree is in computer engineering and I used to work in power generation so I was very comfortable with the electric design and working with high voltage and current. You might not be so comfortable. A similar system without battery was quoted to me at $24K by an installer.

        Battery was about $2K. Tree was $1K. After rebate cost was $11.2K. It’s reduced my power bill by about $210 a month. So about 4.4 years to break even.

        It was a lot of work on my end but I know I didn’t cut corners and was very careful to make a system that should last.

  • Shimitar@feddit.it
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    2 months ago

    Don’t have batteries and cannot resell yet (paperwork submitted and waiting) so production is restrained to autoconsume…

    But 640kw in 73 dsys here… (6kw rooftop, but mixed rainy weather)

    • Iceblade@lemmy.world
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      2 months ago

      Damn, that’s like a 6% power factor. How does it compare to your power consumption during the same period?

      • Shimitar@feddit.it
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        2 months ago

        Red is my power consumption and blue production. My solar is currently capped at my production because I cannot resell and I have no batteries.