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  1. Shawn
    September 26, 2015 @ 10:49 am

    A Powerwall doesn’t produce any power, Sri if your solar panels don’t produce enough power, that won’t change. Your bill will not go down, and the Powerwall will not save you any money if you already have a net metering agreement. Don’t listen to the salesmen on this one, it doesn’t make any sense for you (or me). Being off the grid would be cool, but that’s a whole different proposition.

    • disqus_PIb6naSHLa
      February 9, 2016 @ 1:09 am

      A couple thoughts … first, if the utility becomes unreasonable, this would allow you to potentially bypass having to deal with them. Second, should there be a loss of power due to hurricane, earthquake, etc this allows you to function off the grid. So long as your PVC system is producing excess power through the day, the difference can go into this battery. Assuming you charge it adequately and your power needs go down at night, you’d essentially be off grid. My big question, is this tax deductible?

      • Gee Why
        February 14, 2016 @ 10:39 am

        For the benefits alone, I think the cost is worthwhile 🙂

    • DC,g
      March 10, 2017 @ 4:23 pm

      The only thing that really makes sense is to simply go off grid and put the savings in your pocket every month and expand your own grid at will or when needed. I prefer using AGM and golf cart batteries, they seem to be very forgiving and long lasting if you incorporate pulse/desulfurization chargers. I was never a fan of HECO, net metering nor connecting to a grid that can go down with any tsunami or hurricane,based on the locations of all of the electric generation plants on the island of Oahu. Not only that,when the grid goes down,so does your power also and get this,you have the solar panels on your roof. The upside, it costs less than $10k to go off grid vs the $50k-$90k to connect to the grid. I am hoping that common sense prevails here…

      • Marni
        March 15, 2017 @ 9:46 am

        I am trying to get off the grid – do you have any insights of where to start now that we have all of these options?

      • DC,g
        March 15, 2017 @ 10:59 am

        Actually, I do. Start by ordering 12 v 100 w solar panels from eBay, Amazon Prime or anyway you can get your hands on panels. Any larger panel, you’ll pay through the nose for shipping, they run me about $1.19 a watt right now. You don’t have to buy them all at once, you can buy little by little each month. Then start buying 6v & 8v golf cart batteries from Sam’s Club or Costco and connect them in series/ parallel circuit so that you end up with a 14v system. Then you can shop on eBay for D.C. To AC inverters and hardware them into your electrical box, I find a separate box works better so that you can build up your system as you go along. Later on, you can add wind turbines & pulse/ desulfurization chargers to keep the insides of your battery banks clean & last for decades. The reason I designed two of my four battery banks into 14v systems is because 12v systems alarm out your inverters after about 4-5 hours and 14v don’t alarm out my inverters at all. You get about 14-19 hours before they alarm out the inverters if there was no sunlight at all. Plus all of my radios operate at 13.8 volts, so 14v systems make more sense to me. I hope this helps.