| I think the IEEE document covers quite a bit of your questions/comments. My neighborhood is barely 25 years old. Meaning, it was dirt when I bought my house and watched as they built it. Still, the grid wasn't ready. The house was not ready. When I put in our 13 kW solar array we had to rip out the original breaker panel and replace it with one of higher capacity. Not because of the size of the array (which is larger than pretty much all installations around me by at least a factor of 2). No, it was simply because, 25 years ago, when plans were drawn for this entire development, the Building Department did not have any requirements on the books for the future addition of solar. The meter had to be replaced as well. Just to make sure it is clear. What this mean was tearing-up the stucco all around the existing panel, making a larger hole, rewiring the new panel and meter and redoing the stucco. Of course, stucco is basically concrete, which means that side of the house lost its color, which required repainting the entire exterior of the house because the faded stucco color was not going to be easy to match at all. I don't remember the cost of that part of the job. I was not allowed to do it myself (I did the rest of the solar installation). I think it was in the order of $20K, maybe more. I don't know what code might look like today for new developments. I would hope they include planning for solar, which should include power distribution, transformers, meters, breaker panel and other requirements. Regarding battery issues in V2G applications, well, the IEEE document covers them well. It boils down to faster degradation due to lots more cycling, warranty issues (the EV manufacturer covers miles driven, not V2G cycling), etc. On the subject of paying for the power you contribute. Well, we'll have to wait and see. I have no clue how they might plan to manage this. If I am going to use an EV for V2G, the utility better pay me a lot more than what it will cost to replace the battery pack. Which means that the users of my power will likely have to pay quite a bit more per kWh than today. I generate a lot of excess energy. The way they pay you back for excess solar today is absolutely laughable. In fact, the fear now is that homeowners will have no incentive to install solar because what is known as "NEM 3.0" metering, well, basically screws them even worse than those of us who already have solar. Here are the basics: https://www.solar.com/learn/nem-3-0-proposal-and-impacts-for... |