Is this correct? Nobody wants to see solar energy . Assume positive intention.4. ) This certainly goes well beyond initial configuration and reporting. Hi All, 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. But still the solar companies keep trying to sell it to me.. Export limiting generally isnt permitted. Real names are preferred - you should be happy to put your name to your comments.2. As your sister can presumably export as much power as her solar inverter can produce it wouldnt need this device. 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). Efficiency has and will improve further over time, but never to the point of perpetuity. The naming of zones may differ between manufacturers but may appear as: Australia A - applies to the configuration of inverter settings in Victoria and all Eastern . All is explained here: http://www.solarquotes.com.au/blog/kw-and-kwh-what-is-the-difference/, ( 5kW per hour is a non-sensical unit unless you want to describe an acceleration of energy! Ready for some quotes? The data has 5KW flat lining confirming more is being generated. I am a bit confused about export. 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! We are in an area where only about 20% of the homes have solar. As a side issue for you, if you (like lots of people) have high voltages issue causing shutdown / throttling, I am not a big fan of the Volt-watt modes, as often these modes will also lower the voltages at which the throttling kicks in. 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. 2. SAPN has told me I cant have more than a 5 kw inverter , but thats just not enough. Australian network service providers (including CitiPower) use solar export limits to keep voltage levels in transmission lines operating within safe . I do NOT have a device in my meter box that could tell the inverter anything about consumption and feed in energy. 0000037497 00000 n That can raise the voltage to a level dangerous to appliances. The standard relating to solar inverters is about to change. The good news is, if you had a total of 6.6 kilowatts of solar youd probably loose very little due to export limiting if you consume half the output of a 3 kilowatt system and can export 3 kilowatts. With permission export limiting can be used to install larger systems. 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. 0000037686 00000 n Typically in the Powercor area, the export limit is 5kW of exports for each single-phase household solar PV system. Even then, the losses from the limit are minor. Economically this probably Is not viable, as our electricity bill is fairly low. The uptake of solar has surprised the powers that be so they are basically wasting free energy and penalizing the producers in the process. Im afraid in a typical situation the inverter wont show its potential output. South Australia Power Networks (SAPN) area: SAPN is the only distributor in South Australia. Powercor wrote back with the following response:"Due to the size of t . After all, Im a big picture kind of guy. The metered version comes with extra current clamps to hook up to the grid side so you can do consumption monitoring and export limiting. It is just the placement of the meter and the current sensor that controls the limiting. Residential properties are unlikely to be allowed to use export limiting to install even larger inverters. 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. The majority of customers are approved for the export level they request. 0000011077 00000 n is there a inverter that stops power going back Generation sources can be, but are not limited to solar, wind and batteries. Of more concern is occasional spikes in consumption which go past the 5kw limit. I have a 14kW solar array running Enphase IQ7+ microinverters (43 of them) hooked up to the grid in a 3-phase configuration in the Endeavour Energy area in NSW, and they currently have the profile AU default AS4777.2:2015 30kVa, Vv, Vw set. 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.. 0000027694 00000 n Ronald was born more years ago than he can remember. As discussion of the topic of export limiting, is continuing, what,if any, is/are the direct effect differences to electricity grid load (as in the load on the wires, not the load as the term used for meaning demand), between a 5kW inverter, and a 10kW inverter with 5kW export limiting? No matter how badly you may want to export limit your solar system, it can only be done in locations where its permitted. If you are in the solar industry - try to get to the truth, not the sale.5. 0000001260 00000 n Why my Power Limit is set to ON with the % whereas her Power Limit is set to OFF and she has been exporting. 220 In an Enphase system, that is with the Envoy-S with consumption monitoring. IE if Im producing 8KW, the house is using 2KW it will still export 5kw? Ready for some quotes? The battery is charging from the DC current which is before the inverter. 3. I have divided Australias regions into three categories: The information below assumes the property is on the main grid. Interesting article. If you are using Enphase microinverters which is extremely likely the whole system can be export limited using the Enphase Envoy gateway. 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? In reality, the losses will be considerably less. Makes sense but begs my next question (sorry). While export limiting is possible its not always approved. This means you tend to see panels at the end of strings shutdown soonest on voltage risk conditions, as they have the highest voltage rise being at the end of the string. Depending on their location, some may be constrained to a lesser export level or even no exports at all. 100 litres alone means little, but if there are 100 litres per hour, this means 100 litre hours of output. DC Input Power (Wp) 10000, from its published datasheet. For any amount above the daily export, you will receive our standard retailer feed-in tariff of 5 . Im on a swer line in rural south Australia. But I can tell you a few things that might help with some of your pondering :- 1. 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. First read the section How Export Limiting Works at the top of this thread. What is the go generally with adding an additional solar system to your home? 260 It would definitely be better if we didnt need to limit the amount of power solar systems sent into the grid. Power failure: Homes hit by solar limits as distributors protect Some manufacturers may have this pre-selected. 0000027818 00000 n So the size of the system becomes irrelevant if you can only export 3kwh (we are Regional NSW Essential Energy). In exchange, the customer receives a small rebate on their bill for every kilowatt-hour (kWh) they export. Surely the distributors capping what you can export to the grid is a bad thing? I have noticed that one string seems to be performing well under the performance of the slightly smaller string. No-one seems to have replied Dirk, so I will try. Going solar even if Powercor says 'No' - MASH: Community Solar The good news is, even in a worst-case situation, the amount will be fairly minor. This applies to both single-phase and three-phase properties. 258 The loss figures above are for Sydney and are affected by the climate. 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. We might still be willing to do this all the same, from an environmental viewpoint. What Happens to the Surplus Power That Can't Be Exported to the Grid? 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. 0000004736 00000 n ), converting to up to 10kW of AC power, and, the GW5048D-ES provides for up to 6.65kW of panels generating capacity, converting to up to 4.95 kW of AC power, and, acting as a battery management system and UPS, when a battery system (of up to two approved, low voltage, batteries) is connected. Or is the energy produced by the panels but dissipated somehow? startxref A Decent Battery From sonnen. 0000008043 00000 n But youll need to be confident you wont be hit with high demand charges during the evening peak that will wipe out any advantage. 0000028638 00000 n Contracts and resources for connection agreement, Vegetation clearing requirements for new powerlines, Registered Electrical Contractor resources, Rapid Earth Fault Current Limiters (REFCL), Endorsement for wholesale demand response. There are lots of variations to this theme, however. 207 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? Select the AS/NZS 4777.2:2020 Australia A setting. We want to add a battery and it seems logical to add more cells also to another inverter/battery setup. Has the oppressive authority in WA ever given a reason for not allowing export limited inverters in WA? Regarding batteries, as we all know from our mobile phones, constantly being charged and discharged, will deteriorate much quicker than PV panels (and the same that goes for phones, laptops, and your electric toothbrush also goes for solar and electric vehicle batteries, unfortunately). 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. Talking of which, the fact often gets dropped under the table that neither batteries nor panels and inverters (being mechano-electronic devices) have a limited life span, and their efficiency deteriorates gradually after only a few years. Single-phase properties can install inverter capacity up to 5 kilowatts while 3 phase properties can install up to 30 kilowatts. It is delivering 8 kilowatts of solar power. Below is the email response I received from Powercor. Activities part of Powercors Solar Hotspots program carried out over three months included upgrading infrastructure, adjusting tap settings on street-level transformers, balancing voltage levels on powerlines and various tweakery at zone substations. If youre not satisfied with what answers our calculator gives, let me know your figures for grid electricity and solar feed-in tariff and Ill come up with an estimate for you. 207 Finally, there are profiles for other countries that run 220-240V networks, and its remarkable how many of them use the older AS4777.3:2005 standard in their countries, because for many of these countries, this is the only profile the Envoy offers. I think that the limiter can connect only to one inverter and not two at the same time. is it 10kW AC or DC?? I have spoken to one installer , but he couldnt really help me . <]/Prev 115522/XRefStm 1575>> and only supply me with power from the grid 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. If you cant store the power (too expensive) and you cant export it, why the requirement (or desire) to put in large systems? you request 5kW and Powercor says you can only export 2.5kW) Set a 'zero export' limit - i.e. I was told to set Power Limit to ON. But it seems the situation has been changing for the better in the last couple of months in a number of affected areas. 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. 0000001757 00000 n Am planning to install solar 6.6 kWh system and upon checking with powercor they are giving export limit as 0 kWh. amended or replaced from time to time. Allows installation but has an export limit. 0000001916 00000 n Quotes vary and the deal has to be value/advantage logical or whats the point. 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. As the LG Chem battery charges using DC current from the panels it is possible to go over the 10 kW inverter limit by charging the LG Chem battery in the middle of the day. And yes 5kW export limit applies May I suggest an extra fact check to polish the valuable story above? As far as I know, only solar installers can apply for export capacity in the Powercor area. I still dont know if they have programmed the inverter to reduce the overall output by a percentage or not. Store it and use it later (this requires solar battery storage), or it disappears into thin air via a heat sink. Solar export limiting, or 'export limiting', occurs most often when there is more power being pushed into the grid than it can handle. Why on earth would I do that if I can help it. &K?BK:T$A1Cn I am a total newbie to this but I am unclear why export limiting is good? 0000038752 00000 n 0000028229 00000 n So having a powerwall is way less useful for helping with an export limit than you would think. 0000038562 00000 n Solar and renewables for installers / RECs - Jemena What am I missing? Im in regional WA with a rural 2 phase supply. Are Tesla Powerwall smart enough to let majority of power export to grid and only start charging battery as inverter approaches its export limit? Youll also start receiving the SolarQuotes weekly newsletter, keeping you up to date on all the latest developments on Australias solar scene. 0000037419 00000 n 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. The Good: In these locations, properties can usually install up to 10 kilowatts of solar inverter capacity if they have single-phase power and up to 30 kilowatts with 3 phase power. Wouldnt it be better for the inverter to display its total actual potential output under current conditions? Heres what that means. reliable export limit control function as per AS4777.2 to limit the export output where the . I could easily share my excess power for the time I am not irrigating my crops. Put down your weapons.3. This 80% could translate to an estimated 50,000 current or potential solar customers able to export more solar to the grid. 306 47 But if you suddenly switch off everything, there is more surplus solar power than youre allowed to export. We respect your privacy and you can opt out from the newsletter at any time. Australian Rooftop Solar Powers Rise Astounding, But.. Australias Emissions: Electricity Down, Transport Up, Compare Feed-In Tariffs And Electricity Plans, Solar Export Limiting What It Is & Why Its Useful. Thanks Steve 0418 815 193. Sorry if dumb question. I am afraid Western Power is very strict. 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. Phone, email, give us feedback or make a claim. I havent made any applications yet, but Ill certainly be asking this question when I get quotes!. Thanks Ron. This seems technically impossible, because theres only a wire going from the inverter to the meter (the export or feed in to the grid) and a wire going from the meter to my homes main fuse. 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. Shane, you appear to be mixing up kW and kWh easily done! Victorias AusNet network area: The eastern third of Victoria, not including Melbourne or French Island. 2. 0000004059 00000 n Up until quite recently, Powercor had been informing a large proportion of households looking to install new solar systems they will have to cop a zero export limit due to high congestion created by exports from existing systems. Powercor households stand to save even more with solar Im trying to get some unbiased advice on whether or not we should add more solar. So basically the whole local industry is going to be cactus until this is resolved. The MSO helps us manage and keep our network safe for solar customers. 220 Powercor says it has contacted all solar customers within the previously impacted areas to let them know about the companys progress and to encourage them to consider reapplying for exports. Its located in Ausnet Services' Distribution Area but Ausnet is not part of the CitiPower, Powercor and UnitedEnergy . 0000039096 00000 n 0000009573 00000 n Ill upgrade the Endeavour Energy area from Ugly to Bad, since things are clearly not all bad there. Normally single phase properties can have up to 5 kilowatts of solar inverter capacity and 3 phase properties can have 15 kilowatts. Many Australian homes are not allowed to export more than 5 kW to the grid. After (almost) three months with no reply, has any reason been given, as to why export limited inverters are not allowed for single phase grid connections to the SWIS grid in WA? If your pumping needs are large enough this can pay for itself, but it will be expensive to set up. Furthermore, the sustained overvoltage inverter protection set point shall be set to 258V. Is this perhaps one of the well-kept secrets about the reality of residential solar production in Western Australia, one that neither the solar installers or inverter manufacturers, let alone Synergy or Western Power want to be publicly known? I think of it like the rate at which water is flowing out of a hose. 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. 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. A condition of this basic connection offer is that all inverter energy systems must have the volt-watt and volt-var response modes enabled with the following settings: 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. All these profiles need to dance carefully around the problem. (2nd one APPROVAL/SITE SPECIFIC CONDITION(s): Total Solar Export must be limited to 5kW). 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. Weve seen a rapid growth in rooftop solar systems.With each installation, were facilitating rapid growth in the amount of solar capacity on our network. Your meter is on the connection between the mains network on one side and the combination of your inverter and your loads on the other side. I realise that all the political parties in the the WA state parliament and especially, the Synergy/Western Power conglomerate, that controls approvals of domestic rooftop photovoltaic systems connected to the SWIS grid, are opposed to domestic rooftop photovoltaic systems (even though we stabilise and sustain the grid), but, I am wondering whether any reason has ever been given by the oppressive authorities, for banning export limited inverters in WA. But you may as well just get a standard inverter and send your excess electricity into the grid. The current Envoy they will be selling is the Envoy-S. Before that was the straight Envoy which did not have the consumption monitoring / metering needed to do export limiting. So in effect I have two safety guards in place, 1. the 5kw limiter to the grit and 2. the extra Gateway . xref Hello. If you are export limited, the only way to implement that is with some sort of meter as Ronald says. VAr (var % rated VA) These consumption spikes go past the Solar energy being limited suggesting were drawing from the grid! 0% Anyway you are probably not supposed to be messing around with the profiles without agreement of your DNSP. 0000029011 00000 n A 5 kilowatt inverter will never supply more than 5 kilowatts of power no matter how many kilowatts of panels it has. Long term benefits would be a more energy efficient system. And, if a street full of these, plugs their cars into the grid, for recharging, starting the recharging between 1700 and 1800, lots of entertaining fireworks, along the street powerlines exploding. Also, if you are on the main grid the amount of power you are allowed to export can still be below the limits given or even zero, depending on how much additional solar capacity the local grid can handle at your location. If you are in the solar industry - try to get to the truth, not the sale.5. trailer Im in the Endeavour Energy area. The fact is that Powercor does not set an upper limit on the size solar panel system you can install, up to 30kW. The Ugly: In these areas export limiting may not be allowed at all. Worried the impact this will have currently when we charge an EV in the near term. Select your country/region. Because people have been refused any STCs for being just a few watts over, no installer will go over the limit for a normal installation. How is export limited for micro-inverters? But, if you are really keen, I suppose you could use a site such as PV Institutes Live PV Map to see how other solar systems in your general area are performing: Note that patchy cloud can produce a lot of variation in output. That is correct. Powercor's network solutions manager Claire Cass said of 32,580 customers connected to solar with Powercor in the last 18 months, only 2023 could not export power. A Decent Battery From sonnen. 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. 0000005359 00000 n Do you know the situation here? hbbf`b``3 I j But you will probably find that there is another setting that it will shutdown when 10 minute average voltage is a measly 255v. As a general rule, 5kW tends to be the upper system size limit for single-phase connections, but some networks allow up to 10kW. When a home is exported limited, all the power the solar inverter can produce is available for the home to use. So if your home isnt currently drawing power you wont know from looking at the display if its capable of producing the maximum 5 kilowatts or if it cant provide more than 3 kilowatts. This could be important, given that we have a state parliamentary election due in a couple of months. 10kW of inverters with 11.325kW of panels. If so, it would make replacing the whole system more viable which is exactly what I wanted to avoid (and such a waste!). Exporting surplus solar power is good because it reduces fossil fuel generation and pays you a feed-in tariff that reduces electricity bills. Perhaps it is worth mentioning that the stricter export limitation becomes, it will make a stronger argument for batteries. Wyndham new Solar - powercor's zero export limit - Solar PV discussion 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! 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. Swearing revenge, he began his lifelong quest to reduce the harm the environment could cause. NSWs Endeavour Energy area: Western Sydney. 100% Once voltage thresholds etc are configure in the profile by the Envoy at install, each micro operates largely independently. endstream endobj 351 0 obj <>/Filter/FlateDecode/Index[17 289]/Length 31/Size 306/Type/XRef/W[1 1 1]>>stream Note that connections off the main grid are usually far more restricted. The new inverter standard AS/NZS 4777.2:2020 has new inclusions to address grid stability issues - a new feature that is necessary to further enhance the hosting capacity to accommodate more solar and renewable energy systems. Sorry Andrew: NQR. 60% lagging This extra meter adds to the cost of a solar system. sonnenBatterie Evo. Powercor says the Solar Hotspots initiative is the first stage of a five-year Future Networks program to support customer investment in solar power systems, electric vehicles and battery storage. Do the inverters prevent the production of energy by the solar panels when an export limit would otherwise be exceeded? 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. But whether or not extra solar capacity will pay for itself is another matter. 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. Fronius Wattpilot: A Smart EV Charger With A Short Warranty, You Wont Believe How Dumb The NSW Governments New Battery Calculator Is. I am surprised to hear that Powercor has allowed you to increase your exports, but that is good to hear. I was really keen for this system with a battery as most of my power is used at night and I like the idea of power during blackouts, which do happen quite a lot here. Rubbing salt into the wound were situations where someone was zero export limited while their next door neighbour wasnt. I did get on the FiT in the early days for the 66cpkWh, but installed a separate system (which I have since incorporated into my stand-alone system. Finally! Hi All. 0000038484 00000 n 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. 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. It does this by adjusting the MPPT but instead of working to maximize power from the panels it reduces it. 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? Whats the logical and practical way forward? Now, that would help protect electricity grids, especially, the fragile, decrepit SWIS grid, for the present. Thanks Ronald! Is this default, or would it be programmed in if the distributor required it? If you can go outside and scream at the top of your lungs with no chance your neighbours will hear you, then theres a good chance you are off the main grid and face much stricter limits on exports. What is 'zero exports' or 'export limiting', why is it affecting Powercor's technical assessment aims for these works to enable at least 80% of new solar applications to export 5 kW. Hi i want to install solar with no power Solar export limits for Adelaide suburbs with most panels under SA

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