0000001916 00000 n This seems to be becoming a big problem at least locally. Finally! But it seems the situation has been changing for the better in the last couple of months in a number of affected areas. hooked up to an energy efficient 44kW motor for a real-world Of course the manufacturers dont want this to be public knowledge and pretend that once you paid for a system you are set for life (yours, not that of the system). 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. Would the gateway signal the micro inverters to shut down one at a time, or to all reduce output equally? 0000029403 00000 n Powercor's technical assessment aims for these works to enable at least 80% of new solar applications to export 5 kW. 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: And also is it worth installing solar with 0 kWh limit with self consumption around 20-30%( payback 6-7 years). Where do I find information on reapplying for export with Powercor? The Ugly: In these areas export limiting may not be allowed at all. Of course, if you are planning to get an electric car, that has the potential to make a huge difference to your self consumption of solar power. 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 still dont know if they have programmed the inverter to reduce the overall output by a percentage or not. (2nd one APPROVAL/SITE SPECIFIC CONDITION(s): Total Solar Export must be limited to 5kW). 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 . Unfortunately, the inverters parameters such as Export Limitation are all password protected, and so far I have been unable to even determine who knows this password. The earth is used as one conductor which has a higher resistance than a copper wire. Households and small businesses that generate electricity using solar panels, wind turbines, or other small-scale generators, can feed back any unused electricity into the electricity grid for other customers to use. ACTs EvoEnergy Network Area: Covers most homes in the ACT, especially in built-up areas. 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. 4. 207 I think I was partially wrong about how my PV is connected to the home and the meter. In exchange, the customer receives a small rebate on their bill for every kilowatt-hour (kWh) they export. &K?BK:T$A1Cn 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. 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. 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. Thanks. 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. Assume positive intention.4. NSWs Ausgrid Network Area: This covers East Sydney, Newcastle, and out to Merriwa. Some say so you want to replace your system? 3. 0000004622 00000 n Im afraid thats a tough situation. Sorry Andrew: NQR. The solar installer or customer must have sought and received pre-approval from us for the requested capacity of the generator. Sometimes Powercor can reduce that to a lower figure, or even set a zero-export limit. 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. 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? I was told to set Power Limit to ON. How to correctly configure inverter settings. Why my Power Limit is set to ON with the % whereas her Power Limit is set to OFF and she has been exporting. hbbf`b``3 I j I have divided Australias regions into three categories: The information below assumes the property is on the main grid. However they have been advised that this wont be allowed anymore. If you use a pre AS4777.3:2005 the limits are probably even higher, but you loose some other features (like frequency ramping which is probably very sensible to have if you want to be a good grid citizen), and you probably are not supposed to run those unless it is a pre 2016 install. 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! It is delivering 8 kilowatts of solar power. Our Solar & Battery Calculator can give an idea of if its likely to pay: https://www.solarquotes.com.au/solar-calculator/. I just dont understand it. 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. If thats not a good option, you can consider getting a demand tariff and doing pumping outside the peak period when the cost of grid electricity will be relatively low. They did say that with future upgrades we could reapply, but I cant find a way to do this. Does anyone know how the limiter works in this scenario with 2 inverters? Voltage (V) measured at inverter terminals If they face in two or more directions, it will further reduce the losses by reducing the peak solar output while stretching it out, so it lasts longer through the day. at night or not enough at day time ? (Image from Finns Tesla App). Most systems have mostly N facing panels, so really only generate peak power for a few hours a day (often 10am>2pm approx) But there is also the DNSP rules which need to be followed. 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. Any ideas of how I can get a system that is actually going to generate enough power to charge a battery? They want to do it there way and it seems my request complicates things for them and I dont hear back, bar a couple. . But if people send a lot of power into the line then the voltage at the far end, instead of being lower than at the sending end, becomes higher. ), converting to a maximum of 5kW of AC power, whilst the GW10K-MS provides for up to 13.5kW of panels generating capacity, across three MPPTs (strings? Whats the logical and practical way forward? In addition, all modern solar inverters must comply with AS4777.2015 at least. 0000008571 00000 n You can see from the profile name that it ensures the microinverters conform to the AS4777.2:2015 Australian standard that governs inverters, and it enables the advanced Volt-var and Volt-watt controls for adjusting export power when the grid voltage gets too high (as opposed to abruptly shutting off all export power when grid voltage is too high, which happens without Volt-var and Volt-watt). When it says that you can export 5kw, does that mean you can export up to 5kw PER HOUR? Thanks Ron. 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. The power is first used to meet household consumption, with any surplus exported to the grid for other people to use. 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. Store it and use it later (this requires solar battery storage), or it disappears into thin air via a heat sink. It can also only provide this when it is running. 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. The solar PV system is connected to the network via an inverter. Economically this probably Is not viable, as our electricity bill is fairly low. He's been reporting on Australian and international solar energy news ever since. Export limiting does limit the inverter output, but only as needed to keep the export power below the limit. NSWs Endeavour Energy area: Western Sydney. 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? 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. Victorias Jemena network area: A small but crowded chunk of North and Western Melbourne. 0000039284 00000 n endstream endobj 351 0 obj <>/Filter/FlateDecode/Index[17 289]/Length 31/Size 306/Type/XRef/W[1 1 1]>>stream (Note: it is possible to install a larger system, say 10kW on a single phase property and meet the Powercor rules by export limiting the system . 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. But if you suddenly switch off everything, there is more surplus solar power than youre allowed to export. If you are export limited, the only way to implement that is with some sort of meter as Ronald says. Am I wrong? 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. If so, it would make replacing the whole system more viable which is exactly what I wanted to avoid (and such a waste!). 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. 0000039096 00000 n Notify me of follow-up comments by email. If we consider a home in Sydney where no electricity is used during the day, and all the solar panels face directly north, then the percentage of output that will be lost due to a 5 kilowatt export limit would be: So even in a worst-case situation for Sydney, an 8 kilowatt solar system that is exported limited to 5 kilowatts will only lose 4% of generation. amended or replaced from time to time. And doing so potentially puts you running in a non compliant state. We are on a zero limited export. it is, kind of, effectively export limiting. Even then, the losses from the limit are minor. ( I could not convince him that I knew what I was talking about! As far as I know, only solar installers can apply for export capacity in the Powercor area. Notify me of follow-up comments by email. Thanks for the information. 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. Have a good christmas. Heres the Fronius Smart Meter that you need if you want to export limit a Fronius inverter it will add about $500 to the cost of the system: An example of how export limiting works You have an inverter thats exported limited to 5 kilowatts. While installing solar panels can still be worth it under these conditions, its a disincentive, increases payback time and is generally a pretty crappy state of affairs. What is the go generally with adding an additional solar system to your home? 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. 100% 0000006578 00000 n Im glad to hear its flexible enough to do that. As your sister can presumably export as much power as her solar inverter can produce it wouldnt need this device. In a Enphase system, only the Envoy can provide this. No active system controls whether you use inverter of imported power. To get your quotes, please enter your postcode: Flexible Solar Exports To Ramp Up In South Australia, Australian Solar Systems Interest Index: September 2021, Why Australian Solar Installers Love Austrian Fronius Inverters, Tesla Powerwall Price Takes A Tumble In Australia, "Snail Mail" Home Battery Offers: Be Wary, New Minimum VIC Solar Feed-In Tariffs Locked In, Glenrowan Solar Farm Construction Gets Cranking. JackD 1 year ago. 20% 220 You could approach SAPN and ask for special permission to install more solar capacity on an SWER but I would not be optimistic about that. Or is there a build up of voltage in the system? 100% 0000037764 00000 n 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. We respect your privacy and you can opt out from the newsletter at any time. Unfortunately, SAPN wont allow more than 5 kilowatts of inverter capacity on an SWER line. I realise that Australian legislatures do not care about the future, but, the future is coming, whether the legislatures like it or not. Rooftop solar works by turning sunlight into electric power. I have a new residential PV system in Perth WA, 6.6kW total panel capacity and a 5kW inverter (Growatt Min 5000TL-X). 60% lagging Thanks Ronald! The loss figures above are for Sydney and are affected by the climate. Typically in the Powercor area, the export limit is 5kW of exports for each single-phase household solar PV system. Now, there are quite a few profiles on offer that can be programmed into the microinverters. How do I get around this with SAPN , am I allowed to export limit on a swer line in Sth Aust. Limited export means more power for home If your system has a limit on how much it can export then it means more power will get used in your home instead. 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. If that doesnt worry you then you can get a battery and just hope it mostly pays for itself. I have spoken to one installer , but he couldnt really help me . Do the inverters prevent the production of energy by the solar panels when an export limit would otherwise be exceeded? ), 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.
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