Crossy

The English country pub, the main reason the English own dogs! As if we really need an excuse

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Wouldn't that make it an off-grid hybrid then, just spend less money 🙂 The issue affects the hybrids that synchronise the output to the grid (so called on/off grid hybrids) so that the grid can seamlessly provide any shortfall from the solar, like a grid tie would. The problem occurs when a large load goes off, the electronics doesn't react fast enough and a short burst of export occurs. A disc meter probably wouldn't notice at all but the electronic meters can and do. Note that I understand that @MJCM actually had a constant, although small, export (meter was actually moving visibly) even when the inverter said zero. Fixed with a small constant load (fan).

Yeah, Ghost Export is a known problem with electronic meters and one solution is to go off-grid, only going on-grid when the solar is dead. Some inverters allow you to set a minimum grid draw of a few watts which should offset any ghost. Members on another, US-centric, solar forum are noting that their electronic meters are actually saying "error" in the event of even a tiny ghost (along with threats to remove the meter).

From a later post it would appear to be the Netherlands.

Even if he was grid-tie (he's not, the ATS handles that), every domestic level grid-tie inverter has island-protection to prevent it back-feeding into a dead grid. It's an absolute requirement. Note that exporting energy to a live grid (no hazard) is not the same as back-feeding to a dead grid (potential hazard to linemen). If your inverter is on the "approved" list rest assured that, assuming it is correctly installed, it will never back-feed into a dead grid.

It will be interesting to know if there's any follow up. A year / 18 months back we had a bit of a scare when I thought that PEA had seen our meter going backwards (the food-shed next door got a shiny new digital meter on the same pole as our antique spinning-disc device). I set our system to not export at all for a couple of months. Nothing happened. We now have enough storage and generation to be grid independent so no export is permanently enabled. On or about the same day Madam was accosted by a person outside our gate who suggested that our meter was "very old" and we should get a new one. My lady being a smart cookie said she was just the maid and they would need to speak to the owner who was at work. They never came back.

I've added that list to my pinned thread.

Yeah, we used to live in Box (of Brunel's Box Tunnel fame) just up the A4, I got my BSc at the University of Bath. We swilled a LOT of that "warm" ale in the Quarryman's Arms on top of Box Hill (still trading).

It should have been "cellar temperature" 10-13oC (50 to 55oF), not exactly warm but definitely not having its nads frozen off.

AFTER work?? Friday lunchtime down in the Albion Inn (the old Verwood station) with the MD! (this would have been the late 80's mind) Two or three pints of something from Ringwood brewery and a pasty-n-chips then back to the office. By far the best code was written on Friday afternoons, not that anyone actually remembered who wrote it or how it actually worked

Yeah, same version. Not worried (yet) whether it's the latest and greatest.

Both powered up OK, no smoke of any colour observed 🙂

It's been noticed that some inverters which were previously on the list have "vanished". One would assume (bad idea I know) that these inverters would be grandfathered in. If anyone has earlier lists, please feel free to post here. Here's one of the earlier lists for reference. PEA Inverter list 6-2565.pdf

Electronic engineers only!

Would that be "number-two faced" perchance? 🙂

Long ago my parents ran a small minibus / coach hire company. Of course, hen parties were a staple. One young driver returned at 2AM ish having delivered the "hens" (in this case they were older ladies, more like "old-boilers" than spring chickens) home after their night out. He stated he'd barely escaped with his life after several of the "ladies" had decided that he would look much better without his trousers!

You mean that's not a "Just Stop Oil" protest??

Yeah, I noticed a few models that vanished. One must (sorry) assume that they are grandfathered for existing installations. Do you have a copy of the old list where they were included?

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