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koputai

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Everything posted by koputai

  1. Analysis for the full year of 2020 Total Production: 12.882 MWh Total Consumption: 12.931 MWh Highest Production Day: 59.3 kWh on 11th November Lowest Production Day: 1.9 kWh on 26th July Daily Averages - Production: 35.2 kWh Consumption: 35.3 kWh Own Consumption: 16.6 kWh Export: 18.6 kWh Import: 18.7 kWh Cost: $1.88 Yield: 4.1 kWh/kW
  2. Analysis for December 2020 Daily Averages - Production: 36.0 kWh Consumption: 34.7 kWh Own Consumption: 18.0 kWh Export: 18.0 kWh Import: 16.7 kWh Cost: $1.71 Yield: 4.2 kWh/kW December was a pretty cruddy month weather-wise, with only 90% of predicted production, 1,115 kWh against a predicted 1241 kWh. The best day was December 7th with 58.3 kWh produced. The worst day was December 19th with just 11.1 kWh produced.
  3. Analysis for November 2020 Daily Averages - Production: 44.5 kWh Consumption: 37.6 kWh Own Consumption: 20.6 kWh Export: 23.9 kWh Import: 17.0 kWh Cost: $0.23 Yield: 5.2 kWh/kW November was 13% better than predicted, with production of 1,336 kWh against a predicted 1187 kWh. The best day was November 11th with 59.3 kWh produced, our second best day since install. The worst day was November 5th with just 6.7 kWh produced. In November we
  4. We have just passed our first year since our system was hooked up. The vital stats are: Total Solar Production: 12.96 MWh Total Household Consumption: 12.66 MWh Energy Exported to Grid: 6.96 MWh Energy Imported from Grid: 6.66 MWh Total value of power produced: $2,766 Highest 5-minute output: 8.35 kW (14 October) Highest daily production: 60.604 kWh (28 December) Highest daily consumption: 90.427 kWh (28 November, the last day of the first year, which was a stinking hot day, and the longest we've ever run the air-con) Highest daily exp
  5. @manchu I'd suspect WiFi connection reliability. I never count on wifi, and always run a cable if possible. My Fronius is hard wired, and I never have issues (unless I'm fiddling, which I'm prone to). Another thing to make sure of is that Night Mode is set to 'ON' in your inverter. If you have a Fronius Smart Meter, you MUST have night mode enabled so your logging works correctly. I've made a little video for you here on how to do it. Cheers, Jason.
  6. Good on you Manchu. How many kW of panels did you end up going with? The Fronius Primo inverters are good, I have the 8.2kW like you, with 8.58kW of panels. Has the installer set it up for 5kW export limit? Luckily here we don’t have to do that, so with the weather lately I’ve been exporting over 7kW peak to the grid most days, with some over 8kW. That Origin plan looks pretty good. A 15c FIT is about the best you can get at the moment, I think you’ do well. Cheers, Jason.
  7. Well my first year is almost up, and Origin have decided that my 21c feed-in tarrif won't continue. They don't appear to offer any more than 12c to anyone any more. I've run my spreadsheet over all the offers I can find, and staying with Origin seems to be my best option. My new electricity rates will be as follows: 55c/kWh Peak 25c/kWh Shoulder 15c/kWh Off-peak The new contract with Origin will give me a 16c/kWh feed-in tarrif. So now I know that my cheapest power is 15c/kWh, which is during the Off-Peak period. Power from my own solar producti
  8. I agree with everything you say @Tezza, however if you want solid figures, you have to use guaranteed quantities, which is why I used the warranted throughput. 70Mwh is a bit of a stretch, pretty much double the warranted throughput. If it has degraded to 80% after ten years (and 37Mwh throughput), it would take something like thirty years to reach 70Mwh, by which time something else will have blown up long ago. I suspect the break-even point is somewhere between, like 15-20 years, in a full charge-discharge cycle per day installation, which is probably about the same time the
  9. Analysis for October 2020 Daily Averages - Production: 39.1 kWh Consumption: 33.6 kWh Own Consumption: 17.6 kWh Export: 21.5 kWh Import: 16.0 kWh Cost: - $0.21 (ie. earned $0.21 per day) Yield: 4.6 kWh/kW October was almost exactly as predicted, with production of 1,211 kWh against a predicted 1223 kWh. The best day was October 21st with 57.7 kWh produced, our third best day since install. The worst day was October 25th with just 7.2 kWh produced. In October we had 20 'Green Da
  10. A fairly simple way of gauging relative performance, day to day, or site to site etc, is kWh/kW. Simply divide the kWh produced by the kW of panels installed. So in your case of your average production, 28 / 6.6 = 4.24 kWh/kW over the period. Cheers, Jason.
  11. An excellent result. Not sure about Brissy, but August and September were very good months for solar in Sydney. Cheers, Jason.
  12. Analysis for September 2020 Daily Averages - Production: 40.6 kWh Consumption: 30.3 kWh Own Consumption: 15.8 kWh Export: 24.7 kWh Import: 14.4 kWh Cost: - $1.29 (ie. earned $1.29 per day) Yield: 4.7 kWh/kW September was sunnier than predicted, as production was 1,218 kWh against a predicted 1093 kWh (11% over predicted). The best day was September 26th with 56.9 kWh produced. The worst day was September 18th with just 6.0 kWh produced. In September we had 25 'Green Days', where we exported more than we imported, our b
  13. Hi Arnold, welcome to the forums. With your Fronius Smart Meter, yes you need a ‘Premium’ account, but you just have to create it, it costs nothing. It’s free. Making a premium account gives you a lot of very useful extra features. Cheers, Jason.
  14. Analysis for August 2020 Daily Averages - Production: 37.3 kWh Consumption: 40.9 kWh Own Consumption: 17.3 kWh Export: 20.0 kWh Import: 23.6 kWh Cost: $3.35 Yield: 4.3 kWh/kW August was sunnier than predicted, as production was 1,156 kWh against a predicted 913 kWh (27% over predicted). The best day was August 23rd with 48.8 kWh produced. The worst day was August 7th with just 3.3 kWh produced. In August we had 15 'Green Days', where we exported more than we imported, but overall the month was not a 'Green Month'.
  15. Hi Raffinator, welcome to the group. Northern Beaches here as well. Maybe you could show us your system in that section of the site, others are always interested in other setups. I agree with you about the EV situation, the current range and pricing here in Aus doesn't make me want to rush out and buy one, even though I would love one. Cheers, Jason.
  16. Our electricity bill for the 3rd quarter is in. Over winter, 28 May to 27th August, our breakdown was as follows. Solar Production was 2,725 kWh at an average of 29.6 kWh per day. Our usage of the solar production was 1,400 kWh, which is 51% own usage. Our usage from the grid was 2,216 kWh at a cost of $732.52, and we fed 1,325 kWh back to the grid (after own usage) for a return of $279.26. Our net bill was $453.26 Taking in to account our own usage, the total saving for the quarter due to the solar was $564.57 Effectively, our bill was reduced fro
  17. I wouldn't be touching Mitsubishi with a barge pole at the moment, it's possible they will drop out of Australia totally. IMO hybrids were a necessary step, but totally useless now. Go fully electric if you can find one you like with the range you need, or just get a turbo diesel if you are travelling very long distances. With a hybrid, you are lugging around a whole lot of extra weight and complexity that you're not using. Cheers, Jason.
  18. In a lot of the older suburbs of Sydney, three phase power is normal. Post-war a lot of Sydney houses installed three phase instant electric water heaters. The classis unit was the Simplex which pulled eighteen amps per phase. Cheers, Jason.
  19. A guy named Robert Murray-Smith has a cool channel on the you tube, in this episode he explains how this works, and builds a little one himself. Cheers, Jason.
  20. It’s a thing. I know, I’ve got it. I check our power consumption between two and ten or so times a day. Last Friday I had a Fronius Smart Meter installed to monitor consumption on my circuits that I call ‘Climate’, which is air conditioning and underfloor heating. I now know how much power the underfloor heating in the bathrooms really uses. 15kWh per day on weekends, and 10kWh per day during the week. Cheers, Jason.
  21. Fronius also do some very good webinars on the you tube. They did one a while back on this subject. Cheers, Jason.
  22. The Tesla Powerwall is getting on a bit, and uses the wrong chemistry for a home battery anyway. I'd be really keen to see something new from them. Cheers, Jason.
  23. Marc, check if your heat pump is 'Smart Grid' ready. Fronius have a document that is relevant to your inverters here: https://www.fronius.com/~/downloads/Solar Energy/Whitepaper/SE_WP_Connecting_a_heat_pump_to_the_Fronius_energy_management_system_EN.pdf Cheers, Jason.
  24. Wow, you guys down there in VIC get these systems cheap! A quick run of the numbers, that system should average about 20kWh per day over the year, from around 32kWh/day in Dec/Jan, to 8kWh/day in June. Cheers, Jason.
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