Im surprised this hasnt hit the mainstream media yet. 253 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. Now, there are quite a few profiles on offer that can be programmed into the microinverters. Export limiting does limit the inverter output, but only as needed to keep the export power below the limit. First read the section How Export Limiting Works at the top of this thread. hbbf`b``3 I j Ronald When it says that you can export 5kw, does that mean you can export up to 5kw PER HOUR? South Australia Power Networks (SAPN) area: SAPN is the only distributor in South Australia. Have a good christmas. I had applications rejected, and when I asked there was NO course for negotiation or discussion its the RULES is s synopsis of the responses. 0000010603 00000 n Put down your weapons.3. Below is the email response I received from Powercor. 0000093063 00000 n PDF CitiPower Pty Ltd/ Powercor Australia Ltd While this is fine during the week when we are open, it seems a huge waste of electricity on the weekends when we are closed. I have an existing 3.5kW PV system with Solis inverter. Its also worth taking a look in case you shied away from installing solar panels in the past because of the situation now might be the time to revisit the idea. 0000027694 00000 n South Australian solar panel owners can currently export 5 kilowatts of electricity to the grid but under Flexible Exports, they could export double that amount 10kW. 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. Victorias AusNet network area: The eastern third of Victoria, not including Melbourne or French Island. hour of charging is enough to drive 35km.. This is sufficient to charge a battery, although larger solar systems generally improve the return from batteries. Generally however, I can advise that Powercor intends to upgrade the network over the next 5 years, starting in January, however, the specifics of where upgrades are happening and the order has not been decided. If you can export 3kva that means you can have a solar system with up to 4 kilowatts of panels. Thus, the question arises; if a single phase domestic rooftop photovoltaic system, involving a Goodwe GW-5000-MS inverter, and, 10kW of solar panels generating capacity, is installed (across up to three MPPTs), would the federal solar panels rebate apply to all of the 10kW of solar panels, or, to only the first 6.66 (or whatever is the exact applicable quantity) of the solar panels generating capacity? Were seeing a real lift in the number of customers able to export excess solar back into the grid in these areas, which were among the most constrained in our network only a few months ago, said Powercor General Manager Electricity Networks, Mark Clarke. My guess is that when the Envoy-S sees it needs to throttle due to export limits, it does this by sending the same instruction to all micros to throttle the same amount (but dont know for sure). 0000004622 00000 n Is there anything that can be done about it? But still the solar companies keep trying to sell it to me.. Hi It would definitely be better if we didnt need to limit the amount of power solar systems sent into the grid. See image at http://www.johnrogers.com.au/battery_charging_noon.jpg, CORRECTION: My 13.25 kW system will not go above the 10 kW inverter limit unless my house battery is charging and then it can go to 13.25 kW. 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. There are lots of variations to this theme, however. Its only possible to go larger with a zero export limit: https://www.powerwater.com.au/customers/power/solar-power-systems/pv-class-requirements. Powercor is the Distributed Network Service Provider for central and western Victoria, as well as Melbournes western suburbs. Solar export limits for Adelaide suburbs with most panels under SA I have divided Australias regions into three categories: The information below assumes the property is on the main grid. Despite the low feed-in tariff you will receive it can still be worthwhile, especially if you can shift some electricity consumption to the middle of the day. Good question Tony. 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? We have had solar for 6 years and just recently moved homes. If you cant store the power (too expensive) and you cant export it, why the requirement (or desire) to put in large systems? Nominal Output Power (W) 5000 207 I think it is illegal in WA to rewire your inverter or modify any parameters, as it may result in more than 5kW being sent to the grid, so I will just bite the bullet and see that I use as much solar as possible. Youre using a total of four kilowatts to cook your lunch, so your home is exporting 4 kilowatts, which is below the limit. To me it does not quite make sense as no system can produce 100% of its capacity meaning my existing 3.5kW will never produce full 3.5kW (on a good day, I am lucky to get 2.5kW). Self confessed newbie to the mechanics of Solar so bear with me. 0000004823 00000 n I was always of the belief that a 5kW inverter limited the total output/ production from my 6.5kW solar system to 5 kW, irrespective of what is being used in the house. When a home is exported limited, all the power the solar inverter can produce is available for the home to use. All I can really suggest is to try to shift power use to the middle of the day and hope mainly solar energy is consumed. Allows installation but has an export limit. Thanks. Website link shows system producing well over 10 kW. Though endless quibbling over unnecessary details might keep the presses churning, a FACT remains that Ive been using ever-more-cost-effective batteries since 1980. Perhaps it is worth mentioning that the stricter export limitation becomes, it will make a stronger argument for batteries. 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). Long term benefits would be a more energy efficient system. If you are using Enphase microinverters which is extremely likely the whole system can be export limited using the Enphase Envoy gateway. 220 So while the article suggests 10kW inverter ( 13.33kW DC) in fact the limit seemed to be 10kW DC ( hmmm what does 10kW generation mean exactly ?.) Still, few people will want more than the 13.33 kilowatts of panel capacity single phase homes can generally install: The Bad: Homes with single-phase power on the main grid can have up to 5 kilowatts of inverter capacity but can usually get around this limit by installing an export limited solar inverter of up to 10 kilowatts. 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. Store it and use it later (this requires solar battery storage), or it disappears into thin air via a heat sink. So-called wasting of the extra electricity produced is irrelevant: sunlight is FREE, and whether I use it or not has no bearing on the environment. STCs can be received for panel capacity up to one-third greater than the inverter capacity. I believe it must have been set up during installation, but the installer company claims that this is handled by Growatt themselves. Similarly, which would be more detrimental to a fragile electricity grid, through power exporting; a 5kW inverter with no export limiting, or, a 10kW inverter, with export limiting set to 1kW? 352 0 obj <>stream Rooftop solar works by turning sunlight into electric power. 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 . Western Australia Horizon Power area: Regional Western Australia. As your sister can presumably export as much power as her solar inverter can produce it wouldnt need this device. I cant see any reference to the NT. Solar Export Limiting: Why You Should Know About It I have not been able to get an answer from Growatt Australia yet, it seems there is a bit of a cover-up going on. Powercor wrote back with the following response:"Due to the size of t . I have solar on my house and having it installed at an investment property, but not sure what to do now as there will be no benefit of feed in tariff. Powercor claims 30% increase in rooftop solar export approvals These consumption spikes go past the Solar energy being limited suggesting were drawing from the grid! As a general rule, 5kW tends to be the upper system size limit for single-phase connections, but some networks allow up to 10kW. We are in an area where only about 20% of the homes have solar. Metered and a non metered version. Plus a Tesla Powerwall 2. Its becoming common for solar inverters to be export limited, so the maximum amount of power they send into the grid is less than theyre capable of providing. A small solar system can be financially viable. 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. Tasmania: Under 1% of Tasmanians are on SWER lines, so the generous export limit should often be available. Select your country/region. My question is should that then eliminate the 5 kw inverter of the powerwall wich Energex claims is part of the 10kw allowance on a single phase? Point Cook Solar limit export to zero by Powercor - Solar PV discussion 0000029403 00000 n 0000009573 00000 n 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! Can one have micro-inverter panels without a gateway, and how would that be limited? Any ideas of how I can get a system that is actually going to generate enough power to charge a battery? Im glad to hear its flexible enough to do that. Thus if my system is at maximum output, and I am using 2kW, only 3 kW is being exported to the grid. 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. SAPN has told me I cant have more than a 5 kw inverter , but thats just not enough. amended or replaced from time to time. And doing so potentially puts you running in a non compliant state. We just applied for pre-approval from Powercor and were given a 0kW export approval which is going to make almost anything we choose uneconomical. %PDF-1.4 % You could have mentioned that SWER stands for Single Wire Earth Return and why that matters. Victorias United Energy Network Area: A large chunk of Melbourne on the east side Port Phillip Bay and the Bayside Peninsula. I am surprised to hear that Powercor has allowed you to increase your exports, but that is good to hear. I have a 5kw solar system plus a Tesla powerwall 2 on my house . 00@ Oo In contrast, most other network distributors set a strict upper limit on the size solar panel system you can install, typically 10kW for single-phase properties. 220 Certainly this dumb meter is not capable of sending current from the inverter selectively to my home circuits and any excess to the grid? Am planning to install solar 6.6 kWh system and upon checking with powercor they are giving export limit as 0 kWh. Its the same with kW and hours of solar electricity production. is it 10kW AC or DC?? A man named Canute, proved that, centuries ago. Hi All. So it is unfortunate that it is necessary, but good that people can still install a larger system and generally have insignificant losses. 0000029011 00000 n If they want a big solar system with an inverter larger than 5 kW, they must export limit the inverter. hooked up to an energy efficient 44kW motor for a real-world That said, provided the Installer included your details and phone number in the customer section when the SPA was lodged, the solar team intends to follow up with customers if capacity becomes available to export into the grid through upgrades to the network.. Even if you have the Envoy-S, I believe at least on paper there was a Enphase Envoy-S I am a bit confused about export. It is just the placement of the meter and the current sensor that controls the limiting. Recent work by Victorian DNSP Powercor on some problematic parts of its network is enabling more solar power from rooftop panels to be exported to the grid. ( Solar export limiting, or 'export limiting', occurs most often when there is more power being pushed into the grid than it can handle. And Set Power Limit to 100%. Energex doesnt automatically allow inverters over 5 kilowatts to be installed with export limiting, but currently regularly grants permission for single-phase homes on the main grid to install up to 10 kilowatts of inverter capacity with export limiting. 0000027818 00000 n Now, such a hybrid inverter, as I previously submitted as a post, as being needed, would have the capability of providing for up to 10kW of panels generating capacity, and, of power conversion of up to 10kW, to provide for up to 5kW to provide for charging a battery system, and, the other 5kW to provide for the household load and with surplus (to the household load, out of the 5kW provision) being exported to the grid. He's been reporting on Australian and international solar energy news ever since. Swearing revenge, he began his lifelong quest to reduce the harm the environment could cause. I just dont understand it. It owns and operates the states largest electricity distribution network, and is responsible for more than half a million poles and over 88,000 kilometres of powerlines. But your situation is complicated by already having a 3 kilowatt system. So if an inverter that is export limited to 5 kilowatts is providing 8 kilowatts of power, none of it will go to waste provided the home is consuming at least 3 kilowatts at the time. Larger inverters that are export limited are allowed on a case by case basis. I wouldnt drive anything else. you request 5kW and Powercor says you can only export 2.5kW) Set a 'zero export' limit - i.e. Hello. The following is a list of the areas in case youve been missed. going back into the grid with no batteries. embedded generation system to the CitiPower and Powercor low voltage networks. It is critical that you install an approved smart inverter and set it correctly. People have done it at fairly low cost with second hand panels and a DC pump.) But it seems the situation has been changing for the better in the last couple of months in a number of affected areas. 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. Reminder: In Australia, you are allowed to install 33% more panel capacity than the inverter capacity for example, a 10 kW inverter can have up to 13.33 kW of panels attached. My assumption is (and I may be wrong after all) that the idea of using my own energy first before buying from the grid is an illusion, and in fact it only appears like that because all the energy from the inverter (up to 5kW) is measured as exported, all energy required by the house is actually imported from the grid (as if there was no solar system at all), and it is just because the exports are offset against the imports for billing, why it appears that my PV system is reducing the imports. I suspect that it is likely, that that they are all signaled equally, not in truth I dont know for sure. Also, given that export limited inverters (supposedly) work the same, regardless of the grid to which they are connected, why is it so, that states have different rules whereby some allow export limited inverters, and, some do not? At the time of the powerwall install I also had the Gateway installed at an extra cost so I could keep using the generated power from the powerwall and during solar production when the powergrit fell out without danger for the grit workers because the Gateway instantly falls and prevent power to the grit. Why on earth would I do that if I can help it. It does this by adjusting the MPPT but instead of working to maximize power from the panels it reduces it. I live in Warrnambool, Victoria. endstream endobj 307 0 obj <>/Metadata 15 0 R/Pages 14 0 R/StructTreeRoot 17 0 R/Type/Catalog/ViewerPreferences<>>> endobj 308 0 obj <. The uptake of solar has surprised the powers that be so they are basically wasting free energy and penalizing the producers in the process. Yes I do have Enphase micro-inverters and an Envoy gateway, though not enough sunny roof to exceed 5kW, so my interest is rather academic but real. Do you know the situation here? Theyd be higher for a sunnier location such as Perth and lower for cloudier places such as Melbourne or Hobart. Thanks so much, David. But it took him about another ten years to focus on it in a way that wasnt really stupid, Good Article. Fronius Wattpilot: A Smart EV Charger With A Short Warranty, You Wont Believe How Dumb The NSW Governments New Battery Calculator Is. driving range of 200km depending on ambient temperature.
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