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So, if a contractor or tradesman, using one of these during the day, or, another type of worker, gets home after work, and, plugs one of these in to charge, an immediate drain of 7 kW (I believe that it is actually 7.4 kW), and immediate significant drain is imposed on the grid, for several hours, during peak demand. But a sub optimally configured grid sometimes forces installers into implementing setting that are probably less than ideal if the high voltage events in the grid were just occasions where there is too much generation and they do want have all generators throttle back to allow some time for rebalancing supply and demand. There is not likely to be an Enphase system without a gateway (called the Envoy with in the Enphase system), because this is needed to setup the system, configure its profiles and report production and other important functions of the system. %%EOF Thats a furphy from go to whoa. By the time he was eight, he was already focused on using the power of the sun to stop fossil fuel emissions destabilizing the climate. The infrastructure is not sufficiently flexible to deal with this. 2. Generation sources can be, but are not limited to solar, wind and batteries. Solar connections for industry | CitiPower & Powercor document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Download the first chapter of The Good Solar Guide, authored by SolarQuotes founder Finn Peacock, FREE! Its the same with kW and hours of solar electricity production. 0000018244 00000 n If you are in the solar industry - try to get to the truth, not the sale.5. They did say that with future upgrades we could reapply, but I cant find a way to do this. ( Voltage (V) measured at inverter terminals Residential properties are unlikely to be allowed to use export limiting to install even larger inverters. Rooftop solar works by turning sunlight into electric power. If you cant store the power (too expensive) and you cant export it, why the requirement (or desire) to put in large systems? Will this mean any additional system would be limited to 0kW output?? Why on earth would I do that if I can help it. Economically this probably Is not viable, as our electricity bill is fairly low. Im afraid in a typical situation the inverter wont show its potential output. But given average voltages are probably well above what they should be in lots of places, and once you factor in your local voltage rise, and pretty low values under AS4777 etc, there is not much room to play with until the distributors get the act together and deliver us power that better matches the 230v standard they are required to deliver us. As a single example, the Renault Kangoo ZE van (I think that it is the only battery powered cargo van currently available in Australia) has a 33kWh battery, and, To go further, Kangoo Z.E boasts a Z.E 33 (33kWh) battery, If you are in the solar industry - try to get to the truth, not the sale.5. sonnenBatterie Evo. I will update the article with the information. Now, there are quite a few profiles on offer that can be programmed into the microinverters. 0000005359 00000 n I have previously posted (or, submitted for posting), the proposition that what is needed, is a hybrid (not meaning in this instance, a hybrid inverter as is commonly used) inverter that is like a cross/combination, of the Goodwe GW5000-MS inverter (or, kind of, the GW10K-MS, in terms of power conversion), and the Goodwe GW5048D-ES; three GW5000-MS provides for up to 10kW of panels generating capacity, across three MPPTs (strings? Because you dont see the rather obvious shutdowns (or see them less), you might not notice your solar might be throttled back on a regular basis. Your dedicated meter will inform the inverter, and it will immediately reduce the power, so it doesnt exceed 5 kilowatts1. But, now, Goodwe have the GW5000-MS inverter, which, from what I have read, is apparently allowed in WA, for a single phase SWIS grid connection, and, that inverter is a 5kW inverter, that has a maximum panels generating capacity; It clicked, not long after I wrote the comment, My 10 kW system will not go above 10 kW unless my house battery is charging and then it can go to 13.25 kW. And, when battery powered road vehicles with adequate distance capacity (I have read that VW expects to release a battery powered station wagon, with range between charges, of 700km, in 2023 (although, unless Australia wakes up, such vehicles will be unlikely to come to this neolithic country) ) are available, and, even for the rare ones that apparently, already exist in Australia (having not yet seen a battery powered vehicle in Australia, I wonder whether they are simply an urban myth, as to their presence in this backward country), when would they get charged, if people would only charge them at home? I am not sure whether it has been explicitly explained, but, what exactly, is the limit of panels generating capacity, that is covered by the federal solar panels rebate? Now, that would help protect electricity grids, especially, the fragile, decrepit SWIS grid, for the present. To give you example, you will probably find the profile you mention is probably throttling from a very low 250v and will ramp down to 20% at 265v. DC Input Power (Wp) 10000, from its published datasheet. There are lots of variations to this theme, however. The distributor deals with that by putting the voltage slightly up at the sending end. The reason why your sisters inverter is different from yours is your Goodwe would be because yours has a current transformer device that lets it limit the amount of power it exports to the grid. Does anyone know how the limiter works in this scenario with 2 inverters? (Image from Finns Tesla App). Although my testing shows that the micros technically operate quite independently, it is important to understand, only the Envoy can provide some critical components to a properly working Enphase System. For any amount above the daily export, you will receive our standard retailer feed-in tariff of 5 . MPPT2 always shows better performance than MPPT, usually quite significantly better. So the solar inverter has to have its own energy meter installed in your switchboard one that talks to the inverter to tell it when power sent into the grid reaches the export limit. It does this by adjusting the MPPT but instead of working to maximize power from the panels it reduces it. It can also only provide this when it is running. 220 For example, our Solar Enablement program is intended to allow more customers to connect a 5kVa solar PV system with export capacity. But depending on our network capacity, export constraints may influence the size of the unit they install. How is export limited for micro-inverters? Enter your postcode now. This could be important, given that we have a state parliamentary election due in a couple of months. Under another option to . I think that the limiter can connect only to one inverter and not two at the same time. Ronald was born more years ago than he can remember. ) The uptake of solar has surprised the powers that be so they are basically wasting free energy and penalizing the producers in the process. I have just had a 6.6kw system installed with a Fronius 5kw inverter and am export limited to 3kw. So basically the whole local industry is going to be cactus until this is resolved. This is sufficient to charge a battery, although larger solar systems generally improve the return from batteries. Unfortunately, SAPN wont allow more than 5 kilowatts of inverter capacity on an SWER line. P/Prated (%) Powercor's technical assessment aims for these works to enable at least 80% of new solar applications to export 5 kW. Victorias Jemena network area: A small but crowded chunk of North and Western Melbourne. But just note, not everyone Envoy has required bits to do export limiting. So what goes throgh the meter, in either direction, is the difference between what you generate and what you use. In addition, all modern solar inverters must comply with AS4777.2015 at least. If your pumping needs are large enough this can pay for itself, but it will be expensive to set up. What is the go generally with adding an additional solar system to your home? I suspect that it is likely, that that they are all signaled equally, not in truth I dont know for sure. I think the installers like the Volt-watt modes, because if you dont know where to look they hid the problem at your expense anyway. Where do I find information on reapplying for export with Powercor? I am afraid Western Power is very strict. The battery is charging from the DC current which is before the inverter. I was told that as there is an export limit of 5kW and I already have 3.5kW system, my new system will be export limited to 1.5kW. Is there anything that can be done about it? Thanks Ron. There are two options: 1. But I suspect for a lot of people, the vast majority of these over voltage events are simply because the networks are running out of spec voltages. The metered version comes with extra current clamps to hook up to the grid side so you can do consumption monitoring and export limiting. And, depending on the circumstances of each individual household, 10-15 kW of total panels generating capacity, with limiting export to the grid, to 5kW, could provide better for the months with less available solar radiation, to lessen the demand for grid electricity, peaking on a seasonal basis. He's been reporting on Australian and international solar energy news ever since. 0000017636 00000 n After all, Im a big picture kind of guy. Normally it makes more sense to buy a second, separate system, than to expand an existing one. I have 13.25 kW of panels with a 9.8 kW LG Chem battery and a 10 kW inverter export limited to 5 kW. Technically, what will happen is the inverter will reduce the solar systems output so the generation will be forgone, but I dont want to go into too much detail in this article. FAQs - MASH: Community Solar Instead the home can benefit from a small system, as I explain here: Ah yes I see. 100% I prefer a profile that just has the voltages set to a high voltage threshold, and if I have to sacrifice V-W mode, so be it. I dont quite understand how the DC energy from the inverter can go to my home circuits first, before any excess current is fed into the grid. People have done it at fairly low cost with second hand panels and a DC pump.) 0000009573 00000 n I cant see any reference to the NT. AS4777.2:2015 has some rather low default recommendations, which can be tweaked up as no doubt my profile has allowed. The daily export limit is averaged across your billing period (calculated by multiplying the number of days in your billing period by your daily export limit of 14 kWh). One thing I find is that Voltage control works well: instead of the inverter resetting if the voltage gets too high, my inverters roll back output, so it actually helps my neighbors too because their inverters reset less often. I also dont know if my meter has limiting but suspect not as it is a pretty dumb device. The majority of customers are approved for the export level they request. Since in WA you cant have more than a 5kW inverter on a private residence, I believe there isnt actually export limiting in play, and the inverter itself clips the output AC regardless how much the panels are generating, sadly. As has been explained (and COSTED) on previous occasions batteries are VERY cost-effective.IF you stay away from the hi-tech/overpriced/dependence-creating/unproven battery-systems advocated by commercially self-interested parties. The fact is that Powercor does not set an upper limit on the size solar panel system you can install, up to 30kW. 0000093063 00000 n Okay, so that heading may be a bit of an exaggeration, but improvements the company has carried out appear to have made quite a difference. sonnenBatterie Evo. Queenslands Energex area: South East Queensland. 1. 5kW export limiter imposed on one inverter. Smart inverter settings | CitiPower & Powercor A rooftop solar system's grid export limit is determined by the local electricity network operator - sometimes on a case-by-case basis, sometimes according to an across-the-board standard, and . Solar and renewables for installers / RECs - Jemena So really apart from the requirement that the initial startup can only happy on voltages below 253v, I have no throttling until at least 285v and probably even higher. Powercor claims 30% increase in rooftop solar export approvals Its located in Ausnet Services' Distribution Area but Ausnet is not part of the CitiPower, Powercor and UnitedEnergy . 2. Im afraid thats a tough situation. This profile also doesnt impose any export limits, because Endeavour Energy didnt require them of my installation (maximum is 30kW for a 3-phase installation, which my one is well under). The reason for this query, is that, in the past, my understanding has been that, in WA, where export limiting is apparently, banned by the gratuitously oppressive state parliament, and, where a limit of a 5kW output inverter, is allowed, for a single phase grid connection on the SWIS grid, a limit of 6.66 kW of panels generating capacity, is imposed for single phase connections to the SWIS grid, and, thence, the limit of panels generating capacity, to which the federal solar panels rebate applies, for such a connection, has been the 6.66kW. Still a very long payback period, but not as long. Then the information that was left was cut to make the piece more introductory, but perhaps all these reductions made the article like my favorite World War II movie Abridged Too Far.