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Traditionally we have been quite prescriptive about what people can do electrically on their side of the meter, in the name of protecting people from themselves
by angry_octet 2mo ago
Traditionally we have been quite prescriptive about what people can do electrically on their side of the meter, in the name of protecting people from themselves. (Even with a grid isolation switch.) Allowing generation that isn't wired in by a licensed electrician is a big change in regulation, so people are jittery and vested interests are using that.
So it isn't no risk and it isn't a huge risk. Some people will do stupid things. I think we could do more to protect people using plug-in generation, and simultaneously improve grid regulation and reduce costs. As engineers I think we are duty bound to achieve these objectives, but accountants run energy companies now and donate to politicians, and politicians run policy. What we have left is technical innovation that creates economic impetus.
So I'm in favour of technology that makes low cost PV+storage safe and available, economically and with just enough regulation.
With the US banning Chinese inverters, it will be interesting to see if that spawns new tech, or if they just licence build/assemble Chinese junk. Prices will be higher initially but competition should be strong. Unfortunately US standards for software/interoperability seem absent. IEEE 2030.5 is not nationally mandated in the US AFAIK, and it is weak on cyber assurance.
IEEE 2030.5 is also designed for grid to consumer and doesn't anticipate having multiple PV devices that need to talk, let alone batteries. The Germans just exempted everything below 960W, so people routinely have several panels plugged in.