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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. 0000093063 00000 n It would definitely be better if we didnt need to limit the amount of power solar systems sent into the grid. The Solar installer is telling me that they just started getting 0kW approvals back for about 9 out of 10 requests and so they dont believe they will be able to do many installs at all going forward. Its moderately cheaper and the solar feed-in tariff youll receive will lower your electricity bills and increase the amount of clean energy available for others to use. In addition, all modern solar inverters must comply with AS4777.2015 at least. The following is a list of the areas in case youve been missed. ), Finally understand, the article above is very well written for the layman Im in the Endeavour Energy area. Typically in the Powercor area, the export limit is 5kW of exports for each single-phase household solar PV system. Theres more good news, with further improvements to come. 0000038752 00000 n We do not prevent customers from installing solar for their own self-consumption. What I find is installers dont seem to like it when I tell them my plan. I still dont know if they have programmed the inverter to reduce the overall output by a percentage or not. hb```f``sd`c`edd@ A >hp`86s8::\ MNmOe0pYuR`i g G7@ $n@]A#&S_2.dx f Its the same with kW and hours of solar electricity production. Tasmania: Under 1% of Tasmanians are on SWER lines, so the generous export limit should often be available. Im afraid in a typical situation the inverter wont show its potential output. Once voltage thresholds etc are configure in the profile by the Envoy at install, each micro operates largely independently. In my case, I have N & W facing panels, My inverters clip to 5Kw for a few hours, but I can still export a reasonable amount. This is often referred to as 'network constraints'. The new home didnt have solar. I have spoken to one installer , but he couldnt really help me . at night or not enough at day time ? 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. 0000028229 00000 n This is because even if there is only a refrigerator running during the day it will reduce the losses from export limiting and if an effort is made to shift electricity consumption to the middle of the day then losses can be mostly or entirely eliminated. We are on a zero limited export. MPPT2 always shows better performance than MPPT, usually quite significantly better. South Australia Power Networks (SAPN) area: SAPN is the only distributor in South Australia. . Thanks Ronald! In future, will powercor allow export limit if they upgrade transformer? %%EOF 352 0 obj <>stream 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? I am afraid Western Power is very strict. My sister has the same type of inverter (Goodwe) but she lives in the Estern suburbs of Victoria and she has been exporting but her Power Limit was set OFF. This applies to both single-phase and three-phase properties. They hid the problem pretty well, because they do tend to reduce the amount of shutdowns. 0000009573 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. going back into the grid with no batteries. 0 The MSO helps us manage and keep our network safe for solar customers. 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. Powercor's technical assessment aims for these works to enable at least 80% of new solar applications to export 5 kW. reliable export limit control function as per AS4777.2 to limit the export output where the . For any amount above the daily export, you will receive our standard retailer feed-in tariff of 5 . Still a very long payback period, but not as long. Is this correct? If you cant store the power (too expensive) and you cant export it, why the requirement (or desire) to put in large systems? Most systems have mostly N facing panels, so really only generate peak power for a few hours a day (often 10am>2pm approx) Do the inverters prevent the production of energy by the solar panels when an export limit would otherwise be exceeded? You could have mentioned that SWER stands for Single Wire Earth Return and why that matters. 0000010603 00000 n There are lots of variations to this theme, however. While losses increase as the solar power system size goes up, even with 10 kilowatts of panels which is twice the export limit, only 13% of generation is lost. 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. Also note that for new installations in WA, only residences with inverters of 5 kilowatts or less can receive the states, Western Australias Western Power area: Perth and South West WA. Economically this probably Is not viable, as our electricity bill is fairly low. Information on whether export limiting is allowed can be found here, but I am going to present the information differently for both ease of use and to make my boss think Ive done something useful. For example, if you are export limited, only the Envoy-S with consumption monitoring can provide this. 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. driving range of 200km depending on ambient temperature. 0000008043 00000 n There are profiles that still conform the microinverters to AS4777.2:2015, but can disable Volt-Var/Volt-Watt, change the power factor to 0.9 (some grid operators require this), turn off export altogether or set specific maximum export levels like 1kW, 3kW etc., or configure to satisfy specific grid network requirements. An option is to take your pumps off-grid and run them independently off a separate off-grid solar system. The installer has been able to get the system through WP in the past as the inverter can limit the export to grid to 3kva. "Some of these customers may have received approval to export since, due to network improvements made since their connection." Please keep the SolarQuotes blog constructive and useful with these 5 rules: 1. Have I been conned into believing I could produce up to 6.6kW myself, but in fact the maximum my inverter will ever allow through to the meter (and to my house) is only 5kW? hour of charging is enough to drive 35km.. So, the whole of the system of restrictions and available components, for domestic rooftop photovoltaic systems, needs to be reviewed, to provide for greater usage demands during peak demand hours, greater battery storage provisions (and financial assistance for householders to implement big behind the meter battery storage systems, and, regarding the fragile, decrepit SWIS grid, the allowance of large capacities of panel generation, limited export, inverters, such as the hybrid one that I proposed. you aren't allowed to export any power from your solar system to the grid. 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 inverter reduces the amount of electrical energy supplied by the solar panels. Select your country/region. If a home cant export any power at all then there is no financial reason to install a large solar system. 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.. 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! An Update: I just had system installed 4 days ago in the Energex DNSP and suggest the above is perhaps not quite correct. Will this mean any additional system would be limited to 0kW output?? No active system controls whether you use inverter of imported power. So what goes throgh the meter, in either direction, is the difference between what you generate and what you use. Thanks Ron. Thanks for the information. Has the oppressive authority in WA ever given a reason for not allowing export limited inverters in WA? This is done for three main reasons: In this article, Ill give a broad outline of how export limiting works and why it can be a good idea. Its located in Ausnet Services' Distribution Area but Ausnet is not part of the CitiPower, Powercor and UnitedEnergy . What is the go generally with adding an additional solar system to your home? Australian Rooftop Solar Powers Rise Astounding, But.. Australias Emissions: Electricity Down, Transport Up, Compare Feed-In Tariffs And Electricity Plans, Victorias Powercor Lifts Its Solar Exports Game, 3029: Hoppers Crossing, Tarneit, Truganina, 3030: Cocoroc, Derrimut, Point Cook, Werribee, Werribee South, 3551: Ascot (Greater Bendigo), Axe Creek, Axedale, Bagshot, East Bendigo, Emu Creek, Eppalock, Epsom, 3337: Kurunjang, Melton, Melton West, Toolern Vale, 3340: Bacchus Marsh, Balliang, Coimadai, Darley, Hopetoun Park, Long Forest, Maddingley, Merrimu, 3352: Bonshaw, Bungaree, Bunkers Hill, Burrumbeet, Cambrian Hill, Cardigan, Cardigan Village, Clarendon, 3305: Bolwarra, Cape Bridgewater, Gorae West, Heathmere, Portland, Portland North, Portland West, 3444: Baynton, Kyneton, Lauriston, Lyal, Metcalfe, Redesdale, Tylden 3465 Alma, Bowenvale, Daisy Hill, Maryborough. If your solar company provides you with the Solar pre-approval (SPA) number for your pre-approval, we can check specifically what was decided on with regards to exporting. %PDF-1.4 % Shane, you appear to be mixing up kW and kWh easily done! I got a question about export limiter that I hope to get some answers from the community. Im in regional WA with a rural 2 phase supply. But your situation is complicated by already having a 3 kilowatt system. 253 Heres what that means. 0000001575 00000 n Hi i want to install solar with no power You could buy a battery, charge it on the weekend and export during week nights. So the size of the system becomes irrelevant if you can only export 3kwh (we are Regional NSW Essential Energy). 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. And, no matter how powerful, the members of the legislatures imagine themselves to be, and, no matter how trump-like, they are, they can not stop the future. Nominal Output Power (W) 5000 So my understanding of the info above is that my inverter will increase production in unison with demand until it hits 5kw? 2. Seem most solar places, even the ones the go on about how good they are, arent that good when presented with this, what seems to be a conundrum for them. Rubbing salt into the wound were situations where someone was zero export limited while their next door neighbour wasnt. Voltage (V) measured at inverter terminals Means that it caps the amount you can reduce your bills for power used outside of daylight hours? I was lucky to have an early approval, so limited to 10Kw (or due to bad calculation by the approver, 8.6Kw, where he said ALL the Neutral current went down the common Neutral wire, where in fact only the difference between the phases goes down the Neutral (2 phase, 180 degree). The standard relating to solar inverters is about to change. As such, unless the investment pays for itself within at most 5-6 years, IMHO it is not a good investment/waste of money and natural resources. That can raise the voltage to a level dangerous to appliances. I am trying to get a system installed (6.5k smart hybrid inverter with a battery) and have been told by Western Power that I am limited to a 3.0 kva system. Does anyone know how the limiter works in this scenario with 2 inverters? Is it the 6.66 kW, as the 1.3 overload factor of a 5kW inverter, or, is it the maximum allowed (by the manufacturer) panels generating capacity, for an inverter that is allowed by a state/territory government? Nobody wants to see solar energy . 0000008571 00000 n 0000037686 00000 n I suspect that it is likely, that that they are all signaled equally, not in truth I dont know for sure. The installation of solar photovoltaic systems as well as the correct inverter settings are critical to ensuring customers get the most for their investment in this technology. Even if I were exporting 100% of it, it still would only bring down my bills by a tiny amount per month. The fact that export limiting is necessary is not a good thing. I am not even sure the inverter would support that, but I fear that sadly up to 25% of the PV energy might be going to waste! But if you had a larger solar system with a larger inverter that was export limited to 5 kilowatts it could potentially supply 2 kilowatts to your home while exporting 5 kilowatts to the grid. 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). When a home is exported limited, all the power the solar inverter can produce is available for the home to use. What Happens to the Surplus Power That Can't Be Exported to the Grid? 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. Wouldnt it be better for the inverter to display its total actual potential output under current conditions? They did say that with future upgrades we could reapply, but I cant find a way to do this. Australian network service providers (including CitiPower) use solar export limits to keep voltage levels in transmission lines operating within safe . How to correctly configure inverter settings. 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. 20% Residential properties are unlikely to be allowed to use export limiting to install even larger inverters. 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. is it 10kW AC or DC?? Can I share my power excess with me neighbour? 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? I have a new residential PV system in Perth WA, 6.6kW total panel capacity and a 5kW inverter (Growatt Min 5000TL-X). When a home is exported limited, all the power the solar inverter can produce is available for the home to use. I will update the article with the information. There are exceptions for off-grid installations and systems that are installed with a battery. But just note, not everyone Envoy has required bits to do export limiting. Our Solar & Battery Calculator can give an idea of if its likely to pay: https://www.solarquotes.com.au/solar-calculator/. The distributor deals with that by putting the voltage slightly up at the sending end. About CitiPower and Powercor FACT SHEET: SOLAR EXPORT APPROVAL Set appliances to use your solar power Maintenance and safety checks are important This is assuming that my understanding of what I have read, is correct; that such a system would be permitted, in a single phase connection to the SWIS grid. 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. 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. 0000004823 00000 n We have had solar for 6 years and just recently moved homes. Thats a furphy from go to whoa. They want to do it there way and it seems my request complicates things for them and I dont hear back, bar a couple. Swearing revenge, he began his lifelong quest to reduce the harm the environment could cause. I could easily share my excess power for the time I am not irrigating my crops. But if you dont use much electricity it may need to be very small, as I explain here: https://www.solarquotes.com.au/blog/zero-kw-export-solar/. 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. 0000039018 00000 n Plus a Tesla Powerwall 2. Have a good christmas. After all, Im a big picture kind of guy. 3. Ronald was born more years ago than he can remember. When an inverter is export limited, it has to know how much solar energy is being sent into the grid so it can immediately reduce output if its about to go over the limit. endstream endobj 307 0 obj <>/Metadata 15 0 R/Pages 14 0 R/StructTreeRoot 17 0 R/Type/Catalog/ViewerPreferences<>>> endobj 308 0 obj <. But this is at least partially because when you throttle back output, you also reduce the amount of voltage rise you are causing on your local connection to the point of interconnect which is probably contributing to the issue. 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. Perhaps it is worth mentioning that the stricter export limitation becomes, it will make a stronger argument for batteries. Fronius Wattpilot: A Smart EV Charger With A Short Warranty, You Wont Believe How Dumb The NSW Governments New Battery Calculator Is. Exporting surplus solar power is good because it reduces fossil fuel generation and pays you a feed-in tariff that reduces electricity bills. That would provide both export limiting, and, the incorporation of a battery system (for my household, if we would have a 6.6 kW panels generating capacity system, rather than the 5kW one that we have, something like the BYD LVS 20 or 24kWh battery tower, would, I believe be appropriate), which would provide for energy arbitrage, smoothing both power exported to the grid, and, power imported from the grid, especially during peak demand periods. 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. On the main grid, single-phase properties can have 5 kilowatts of solar inverter capacity, and three-phase properties can have 15 kilowatts. The solar installer or customer must have sought and received pre-approval from us for the requested capacity of the generator. Would the gateway signal the micro inverters to shut down one at a time, or to all reduce output equally? And doing so potentially puts you running in a non compliant state. Website link shows system producing well over 10 kW. Hi All. 0000001916 00000 n Hi Put down your weapons.3. I live in Warrnambool, Victoria. If that doesnt worry you then you can get a battery and just hope it mostly pays for itself. 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. Im afraid thats a tough situation. Even then, the losses from the limit are minor. On a related note, we mentioned yesterday that over the border in South Australia, SA Power Networks is readying to ramp up flexible solar exports in an effort to support more solar installations and its pretty clever stuff. AC Output Data 11kW panels with 10kW 3-phase inverter (Fronius Symo + Fronius 3-phase meter). 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. So it is unfortunate that it is necessary, but good that people can still install a larger system and generally have insignificant losses. But, if you are living in an area where it is required to install a large solar system a situation around half of Australians are in then export limiting can allow a larger system with normally very minor losses of clean solar generation. 5kW export limiter imposed on one inverter. Interesting article. Solar customers who currently have a limit on the amount they can export are invited to contact Powercor to reapply for an export agreement based on the greater capacity now available on the network. Its also unusual for a large solar system to have all the panels facing the same direction. Victorias Powercor area: Western Victoria, including a large portion of West Melbourne. Larger inverters that are export limited are allowed on a case by case basis. 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. We want to add a battery and it seems logical to add more cells also to another inverter/battery setup. People have done it at fairly low cost with second hand panels and a DC pump.) In most cases, if you had your envoy shut off, the micros would start and work on their own and independently of the envoy, and in fact of each other. Notify me of follow-up comments by email. Unfortunately, SAPN wont allow more than 5 kilowatts of inverter capacity on an SWER line. &K?BK:T$A1Cn Any ideas of how I can get a system that is actually going to generate enough power to charge a battery? The whole system of domestic rooftop photovoltaic systems, needs to be reviewed; by both the legislatures and regulators, and, by the components (especially the inverters) manufacturers. Quotes vary and the deal has to be value/advantage logical or whats the point. 0000010080 00000 n I have an existing 3.5kW PV system with Solis inverter. These consumption spikes go past the Solar energy being limited suggesting were drawing from the grid! Allows installation but has an export limit. I realise that Australian legislatures do not care about the future, but, the future is coming, whether the legislatures like it or not. Makes sense but begs my next question (sorry). 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 . Victorias CitiPower area: The Melbourne Central Business District. 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. The data has 5KW flat lining confirming more is being generated. 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, I have just had a 6.6kw system installed with a Fronius 5kw inverter and am export limited to 3kw. The metered version comes with extra current clamps to hook up to the grid side so you can do consumption monitoring and export limiting.