Home Solar Q Cell Fronius Case Study

Morning, it's Matt Williams here general manager of GI energy I just wanted to give you a quick run through the system that I've got installed at my home here at Brisbane When I moved into this place in October 2017 the previous owner had a small 1.5 kilowatt system they had installed through the $0.44 tariff back in 2011 Now when we moved in it was just the two of us. There's a swimming pool here There's electric hot water a little bit of air conditioning and a few other appliances that are going to consume quite a bit of power So when we moved in we put in a 6 and a half kilowatt system that's running through a five kilowatt inverter you can probably just make out in the back of the video couple of the panels that are on the eastern roof here and There's a little bit of shade in the wintertime.

It's at about nine o'clock eight thirty nine o'clock So that's from the palm trees that are on this side, which I'll touch on a bit more detail later on the panels that I've got are Q cell 285 watt Q + panels, which back in that time was their model that was made in Malaysia Since then they've designed a flagship model, which is the Q Peak Duo Which either comes as the G5 + or G6 model that now provide a full 25 year product warranty along with the standard performance Guarantee I put on old panels in Australia at 25 years So the way that the panels are installed There's 10 panels east on this side and there's 13 panels on the west.

So I've got 23 285 watt panels that are all run through that inverter now in the last year We've had a young daughter So our power needs have changed a little bit we've gone from using an average of about 17 kilowatt hours a day Up to now around 21- 22 kilowatt hours a day of winter. A lot of that power will be through hot water Obviously with having a bath each evening with my daughter And myself and my partner with showers washing up and other bits and pieces So we've got the hot water heated through the days we've got an electric tank which is run through a timer and Contactor and I'll show you exactly what that looks like in my switchboard afterwards We've also got a pool which runs for roughly about five hours a day in winter And up to seven hours a day in summer So at the moment, we're timing that from about nine o'clock to about 2:30 – 3 o'clock in the afternoon Just to maximize as much as we can from the Sun during the day when the system's providing power A lot of people will ask us About an east-west home.

There's a lot of houses are built this way versus the standard North facing system so We'll do some averages to compare how my system looks compared to something north facing in the same suburb with the same panel to give a fair comparison But essentially at this time of year Yesterday was a perfect day and my system produced system in 19 kilowatt hours. In the summer Back to be as high as 42 or 43 kilowatt hours. So there is a big difference in how the system will perform With the sun lower in the sky and shorter days and ultimately the way that the system runs most Effectively with east-west is also that we trying to use as much of that power in that curve as possible So we'll look at that with the Fronius monitoring that I've got installed Firstly a lot of people ask me what if we have Q Cell panels installed because We do offer a range and ultimately we can install any panel. It isn't like we've got a warehouse full of any particular stock So why Q Cell? I started in this industry back in 2015 after working in the mining industry for a number of years and Ultimately when I start doing anything, I like to do my own research I like to look into how the panels are made where they're made how they tested lots of other bits and pieces just like any Consumer out there would when they're having something for their home so Q Cell was originally a German made panel Their German designed they still do a lot of the research and development there But they've now moved most of their manufacturing or ALL of their manufacturing sorry I should say, over to South Korea and they make some panels in China as well for a slightly different Panel a slightly different model with a different warranty the panels that they use the Q Cell Pro Which was installed at a desert knowledge knowledge Springs back in 2012 That systems continually been performing out in one of the harshest environments in the world and there's a website there that you can go into The DKA solar center and you can see all the live data all the historic data for how those panels are performing You still have consistently been in the top three if not top two panels that are installed out there and there's around 30 different Manufacturers that have got systems there.

So it's a really good indicator of how the system will actually perform Rather than just what's printed on a datasheet or how its tested in a lab. Because ultimately in Alice Springs It can range from 40 degrees in the summer to this time of year where it could be below zero potentially at night So they do withstand some pretty harsh conditions The other thing that I love about the Q cells is the way they were tested at James Cook University In Townsville where they subjected their panel to a 1 in 500 year cyclone event So ultimately we want to make sure that what we're providing is going to stand the test of time As storms and everything else that becoming more frequent So Q Cell ticks the box in terms of how they're tested the other major thing for for us and for me personally is the backup, so Q Cells are owned by Hanwha Group camera or a Fortune 500 company They've been around for over 60 years and they're diverse across many industries so manufacturing, tourism, leisure Multiple logistics and other companies that are involved there So with everything that's been going on the past few months in the way that the the climate and the economy has been changing It's really important to have a product that's got that backer and the parent company being so diverse Across not just solar energy is really important as we've seen many manufacturers leave the industry over the last few years I'll take you over to my inverter and we'll have a look at Fronius as well So this is the Fronius Primo inverter that I've got installed in my garage here in Brisbane I'm recording this at about 8:00 a.m.

It's June the 24th so just after the shortest day and you can see on the screen here the productions at around 200 watts, so Because of that bit of shade that I mentioned on the eastern side Between about 6:30 when the sun's coming up and the inverter starts kicking on and about 8:45 to 9:00 o'clock that shade is affecting the eastern string of my panels, so At this time, I'd probably be expecting maybe about 4 to 500 watts early morning But ultimately given that I'm unable to shift the load and run my hot water and most will report a little bit later It doesn't really impact too much in terms of how we save power but what I'll do, I'll run through that on my monitoring as well so you can see exactly what I mean and ultimately What the loss is because you've got the option to use An optimizer or a micro inverter for your system, but I've worked out that roughly I'll lose about half a kilowatt to about one kilowatt hour per day Which if I consume that power would be worth anywhere from about fifteen to twenty-five cents So we'll do a calculation to see how beneficial an optimiser would be So what I want to show you right now is how to read the inverter So you've got your live screen so you can click on now Which will show you exactly how much power is being produced.

They'll show you the voltage the currents everything else that's running through the inverter You've also got a log this will show you how much power has been produced For the day so far. So because we're early morning in winter. It's only produced 180 watts to date. How much for the year So we're almost at the 4 megawatt mark and how much in total which is just over 24 megawatts Which as I said, the installation was late October 2017. So just under 3 years You can also cycle through and see other output power how much the system saved the amount of carbon dioxide that has been removed from the atmosphere and The second option or the second thing that you can look out is a curve of power so because this is early in the morning, it's not really showing too much now, so We do get asked a lot of questions about the best location for the inverter So my switchboard is back-to-back on this wall in the garage.

Their garage is pretty well-ventilated There's a window there's a back door and a roller door at the front So if you are going to tuck it away in the garage, there's a few considerations that we'll discuss And ultimately look at the best location for them I'll take you out to where the switchboard is and I'll show you what the smart meter and hot water timer looks like as well Here is the active stream meter that reads the power that will actually measure how much power you've consumed from the grid But also how much power you send to the grid So that's what registers is your feed-in tariff that you'll pay the credit for depending on the retailer.

That will vary Anywhere from about 7 up to potentially 17 cents at the moment locally in southeast Queensland So along the bottom is a row of switches Like any home they're separated for your power points, your lighting, hot water, air conditioning or whatever you may have So when you have solar installed, there's a new main switch for your inverter Which you can see along the bottom left next to my main switch for power and on the right-hand side where it's labelled N9 That's the Fronius smart meter. So we'll just have a quick look at that as well So the Fronius smart meter allows you to measure how much power you're consuming from your system It'll measure how much power you're consuming from the grid and how much you're sending back to the grid as well So you get a full overview of exactly how the system is working around the clock So at night it will show you all the power that you've taken from the grid So obviously if you're cooking dinner You've got the lights on the TV on heating or cooling depending on the time of year.

It'll register that as well So if there's any loads that you're able to move and shift you'll be able to see it Daily with an energy balance and it also shows you live production and live consumption So if you're running your washing machine or your dryer, they'll show you exactly how much power is being consumed. I mentioned before about the timer and contactor. So the timer and contactor is used for Hot water when you've got electric hot water installed. There's also an option of using the relay switch with the Fronius inverter So back here on the right hand side is my timer and contactor so you can see on the left hand side There's like a spinning wheel The spinning wheel is used to set the time that your hot water tank will operate so when the waters heated So you can set that in 15-minute increments so you can change it seasonally if required Ultimately at the moment, I've got mine set from about 10:30 until about 3 o'clock So you'll see on my monitoring from about 10:30 till 12:30 There's about 2 and 1/2 kilowatts that are sent to the hot water which is the 2.5 kilowatt element that we've got installed So that will heat up to through the day and then intermittently heat up again in the afternoon as required You'll see quite a difference between the winter hot water consumption and the summer hot water consumption Which would be able to show you as well through this monitoring That reflects the amount of hot water that you'll use ultimately in the summer You're using quite a lot less hot water because it's a lot warmer You don't need such long hot showers, but the air temperatures also warmer as well So the tank will stay a little bit hotter at different times So when you've had your system installed that new meter will be changed over by your electricity provider after the installation Depending on the type of meter you have if you've got a new home with a new meter, it'll simply be reprogrammed Which is nice and quick only takes a couple of days.

If the meter has to be replaced Your retailer will do that. It normally takes them about two to three weeks to complete everything So we do all the paperwork needed. It will be approval sorter than everything else They'll just come and tidy that up afterwards. And once that's done you're then able to sell power back to the grid So this is my system as I mentioned the Q Cell with the Fronius inverter Thanks for watching.

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