Does not sound good to me! Export limiting is determined by your local electricity network operator and involves using additional hardware to throttle the inverter output if certain solar export limits are reached, typically around 5kW. The network companies have been progressively introducing this rule for several years for a variety of reasons, including to reduce the effect of too much solar entering the network on strong solar production days (impacting electricity quality, creating surges, affecting transformers etc).
For example, if you have a 10kW PV system and there is no energy consumption during the day, you could technically generate and export up to 10kW. However with export limiting, the inverter will throttle the export at 5kW maximum. Any solar energy that your system has produced on top of that, will be wasted by the inverter or the export limiting device, typically as heat. The latest state to introduce limiting is South Australia where a State-wide rule came into effect on December 1st 2017, limiting single phase solar systems to 5kW. A good synopsis of their ruling can be found here. Sent from my iPhone > On May 26, 2020, at 10:11 PM, Matt via EV <ev@lists.evdl.org> wrote: > > There’s plenty available with export limiting, just about every manufacturer > offers it > > They all involve installation of a meter (after the utility meter) to provide > feedback to the GT > > https://www.ginverter.com.au/Export-Limitation-Solution.html > > There are heaps of installations here in Australia near edge of grid where > the utility has placed an administrative 0 export limit. > > Sent from Mail for Windows 10 > > From: Alan Arrison via EV > Sent: Wednesday, 27 May 2020 10:56 AM > To: ev@lists.evdl.org > Cc: Alan Arrison > Subject: Re: [EVDL] : V2g for DIY EV's > > Sounds dangerous and possibly illegal. There is no inverter that can > supply the actual power you are using and not back-feed the grid. > >> On 5/26/2020 7:48 PM, Steve Clunn via EV wrote: >> The inverter I'm using actually claims to not back feed to the grid but >> only to supply power that one is using personally. In the ad they describe >> the meter running backwards and people getting charged for giving >> electricity so they understand the situation . I'm not sure I believe >> this claim because detecting what the house is using and what's going to >> the grid does not seem easy without something monitoring the power going >> out of the house. I can turn everything off in the house and see. The grid >> tie inverter that I'm using can run on batteries and I'm using it in the 96 >> volt mode which goes up to about a hundred and thirty volts. In maximum >> power point tracking mode it goes up to 180 volts. I have three cars wired >> up with 30 cells leaf and Tesla batteries. They all plug-in together in >> parallel , solar panels , tie inverter and three cars. The BMS of each car >> will shut off if the voltage gets too low or high and take that one car out >> of line. In general I use about 10% of a car's charge at night. It's been >> running about a year now but it constantly changes. At one time I talked to >> the utilities about getting a different meter but it was a little expensive >> and it's how I came up with this idea that I'm using now. >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200526/ad351632/attachment.html> >> _______________________________________________ >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >> ARCHIVE: http://www.evdl.org/archive/index.html >> INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org >> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) >> > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/index.html > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200527/a80776d4/attachment.html> > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/index.html > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200527/12897bf9/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
