Who's online: fatslim, Vic, Guests: 225
  • gidgi Posts: 559
    NSW
    Performance Poster gidgi
    03 Dec 2017 08:47 AM
    Just thinking if it is worth having a system maybe you blokes that have one could give me your thoughts 
    are feed in tariffs OK ?
    has your bill dropped?
    do you get a good daily power supply?
    how much power do you export back to the grid?
    did you need to change your meter?
    Has it paid for itself?
    thanks in advance for your reply
  • Cview Posts: 153
    Qld
    Stock Poster Cview
    03 Dec 2017 09:25 AM
    Put small  system (4 panels) on 4 years ago i think,  for $ 3.5 k was only getting $ 100 off my bill i went thru 3 inverters , 1 from lightning strike on power pole in the street one failed after a week. Small print says turn them off during electrical storm.
    Lost money on that idea, we  just sold house and was a good selling point i guess.
    Do your sums on how long its going to take to get your money back,.



  • Cropduster Posts: 204
    Brisvegas
    Stock Poster Cropduster
    03 Dec 2017 09:49 AM
    Solar is getting cheaper by the day, the technology has improved significantly over the last few years so it's definitely worth the investment if you can afford it. Not sure where you are or what feed in tariffs you are eligible for but here's where i'm at with mine in QLD.

    I signed up for the 44c per kW/hr before the deadline, my power supplier gave me 06c so my solar is earning me 50c per kW/h, and will be until 2023. (Now with Alinta so it's 0.54c per kW/hr total)
    To make the most of that we use high demand items like washing machines, dryers etc at night, exporting 54c from solar during they, spending 26c of the grid supply per kW/hr when we need to after dark, getting the maximum return for our investment.

    I also put our a/c on the hot water tariff 33 which is significantly cheaper but it is turned off for 3 hours every day, the way around this is to get your energy authority to change your meter to a digital version with a "boost" button. This is for the hot water tariff (33) so when you have high demand for hot water you can bypass the cutoff and get 2hrs at tariff 11, no resin why the a/c can't be used if it's on the same tariff right?......

    I put 22 panels on my roof with a 5kW inverter which i believe is the biggest inverter allowed on a residential property but check, it may be different for you, since my installation cost 10k about 5 years ago the same system now can be had for about 6k, with my feed in tariffs and management of how we use our power i haven't had a bill since, i get a credit every three months in fact which paid for the system after about three years, so i'm well in front.

    The feed in tariff is the key though, if you only get the supplier tariff and no govt. incentive you would be best served using as much of your solar power as possible during daylight hours, if you generate it and export it to the grid and only get 10c you should be using it and reducing your night time use at the higher rate to make the most of your system.



  • Baloffski Posts: 470
    Victoria
    Stage 1 Poster Baloffski
    03 Dec 2017 09:57 AM
    This is a very interesting topic that should be explored more. 
    Years ago I organised Solar on the Castle roof with then wife, and it was like the max of 86 or 88 cents per. Good bloody value then. Think is a little lower than that now. 
    Going, to install solar soon on top of my current shoe box, but after more "current" information.
    Bloody hell, next gen be ridding "lectric M.C"s and be plugging into solar system when getting home, for electric ride the next day.
  • Cropduster Posts: 204
    Brisvegas
    Stock Poster Cropduster
    03 Dec 2017 10:04 AM
    I'm expecting battery technology to be well and truly sorted by 2023 so when my feed in tariff expires i will install a battery bank to store y daytime solar generated power and go off grid completely.
    86/88c per kW/hr is top value, i think the best offered in QLD was about .64? but not 100% sure, i know i got in at the death of the govt. incentive to keep my options open at the time.
  • blueystar Posts: 959
    Perth WA BIN MEN
    Performance Poster blueystar
    03 Dec 2017 10:33 AM
    Put 4 kw on the roof about 2 years ago power bill in credit all the time should pay for it self in one more year 
  • JFE Posts: 791
    NSW
    Performance Poster JFE
    03 Dec 2017 10:58 AM
    How can ya tell a shonky solar installer/business from a decent one? Word of mouth ... and hoping the bloke you contract to doesn’t turn up at install in a clapped out old Ford with non-English speaking mates who came by the kit off the back of a truck, therefore warranty discussion is a non-discussion?
  • Ferrett62 Posts: 215
    Canberra
    Stock Poster Ferrett62
    03 Dec 2017 11:03 AM
    I put a 2kw system up a few years ago, feed in is only 7.5 cent's (missed out on the high feed in ) and cost from grid about 19 cent's so I  get less than half. Convert all lights to led to cut costs, if you can pay up front with no finance and forget about how long to recover the cost and just concentrate on the savings off each bill it works. Inverters make the difference more than anything, cheap shit ones can cost power and be dangerous with larger systems feeding high DC voltage to them so watch packages offered by some companies and do research on inverters be prepared to pay a bit more for a better one for safety and efficiency. Battery storage will give back more but cost more as well and battery life could be an issue creating on going cost for replacement, how many rechargeable things have you had that only last a year before the batteries die and make it useless unless you replace them so with storage systems costing so much, having to replace every 5 or so years would mean you would never be able to recover the cost. Because of the shape of my roof not all the panels face north so later in the day some fall into shadow and are less efficient and this can effectively shut down the whole bank meaning no power from half the system for part of the day. I have an inverter on each panel feeding ac voltage into the system so if one is in shade the other 7 still work independently, down side is difficulty in installing storage.
    In the A.C.T you have to replace the meter with a digital ont that measures each tariff separately plus feed in amount. With a couple of rebates we get and using reverse cycle heating for winter it only cost $260 for winter compared to almost double for gas heating,  do your own research on panels and inverters and know what brands they offer on package deals as quality can vary. 
    Sorry for long winded reply. 
  • Soapbox2627 Posts: 2856
    Whyalla South Australia
    Forum Legend Soapbox2627
    03 Dec 2017 11:38 AM
    I had a 3Kw system with a 4Kw inverter installed in 2004, $18,000.
    all facing north, we were paying $800 a quarter, now we range between $100cr to $200 bill, depending on estimate or actual read
    we get $0.55 tariff

    we have had 1 inverter replaced a year in, near 12 month threatening the installer, contacting ombudsman, till finally, contact the manufacture, they sent a new one and paid the electrician to install it

    I know a couple guys that have 10Kw systems on their homes, they are on good money
  • Cropduster Posts: 204
    Brisvegas
    Stock Poster Cropduster
    03 Dec 2017 01:23 PM
    Posted by Ferrett62 on 03 Dec 2017 11:03 AM
    I put a 2kw system up a few years ago, feed in is only 7.5 cent's (missed out on the high feed in ) and cost from grid about 19 cent's so I  get less than half. Convert all lights to led to cut costs, if you can pay up front with no finance and forget about how long to recover the cost and just concentrate on the savings off each bill it works. Inverters make the difference more than anything, cheap shit ones can cost power and be dangerous with larger systems feeding high DC voltage to them so watch packages offered by some companies and do research on inverters be prepared to pay a bit more for a better one for safety and efficiency. Battery storage will give back more but cost more as well and battery life could be an issue creating on going cost for replacement, how many rechargeable things have you had that only last a year before the batteries die and make it useless unless you replace them so with storage systems costing so much, having to replace every 5 or so years would mean you would never be able to recover the cost. Because of the shape of my roof not all the panels face north so later in the day some fall into shadow and are less efficient and this can effectively shut down the whole bank meaning no power from half the system for part of the day. I have an inverter on each panel feeding ac voltage into the system so if one is in shade the other 7 still work independently, down side is difficulty in installing storage.
    In the A.C.T you have to replace the meter with a digital ont that measures each tariff separately plus feed in amount. With a couple of rebates we get and using reverse cycle heating for winter it only cost $260 for winter compared to almost double for gas heating,  do your own research on panels and inverters and know what brands they offer on package deals as quality can vary. 
    Sorry for long winded reply. 

      My roof design didn't allow for northern aspect so i have two parallel rows on the eastern side of my house, i'm on the side of a hill and my panels get sun from dawn, and because my roof isn't a tall pitch they stay active till the sun passes my neighbours roofline which is virtually sun down, the west was no good for me either because of a huge patio roof that reflect heat. I reckon the east gives me the best result because they get sun the earliest as well as the afternoon sun and they don't seem to suffer from overheating which can compromise production and lifespan. Of course, it's only be default they are where they are, but no bill since installation means i'm happy with it, my neighbour has his facing north and it's exactly the same system as mine but he doesn't get much of a rebate so comparisons are a little harder, his usage is very different to mine also.

    Distribution authorities use rechargeable battery banks for their capacitor banks in their subs, they replace them periodically because they lose efficiency but the technology is advancing, hopefully they will be practical and cost effective for private use soon and just like everything as technology improves they come down in price too.

  • gidgi Posts: 559
    NSW
    Performance Poster gidgi
    03 Dec 2017 02:36 PM
    some great info here fella`s it touches on all the concerns I have had . I am in NSW & gone with a mob called Space Solar their installers are employee`s of the company not sub contractors . I have chosen a 3kw system  for my shoe Box with Canadian panels & a Sun grow inverter made in japan but has a good record here in Oz European ones are another couple hundred bucks . I have a flat roof so will need a tilt up frame & have  a good unrestricted North facing direction. Ferrett62 not long winded mate I think your taking about Micro inverters that go on each panel converting to AC before it goes into inverter I asked about them but would have put another $1800 on the price will have to hurry up & wait till new year for install so will have a chat with my Retailer see what they are offering .your right about the batteries Cropduster they are advancing but not an option at this point Thanks a heap for all ya replies 
  • twistie Posts: 43
    tas
    Stock Poster twistie
    03 Dec 2017 10:48 PM
    installed 4.2 kw system in 5 years ago. Summer is always a credit. Spring & autum $100- $150 bills. Winter sucks. Feed in tarrif 28c per kw till next december. 
  • gidgi Posts: 559
    NSW
    Performance Poster gidgi
    04 Dec 2017 10:14 AM
    Posted by twistie on 03 Dec 2017 10:48 PM
    installed 4.2 kw system in 5 years ago. Summer is always a credit. Spring & autum $100- $150 bills. Winter sucks. Feed in tarrif 28c per kw till next december. 

     yeah best I`ll get is 9-10c /kw but hopefully use most during the day, well thats the plan

  • twistie Posts: 43
    tas
    Stock Poster twistie
    07 Dec 2017 11:56 AM
    Posted by twistie on 03 Dec 2017 10:48 PM
    installed 4.2 kw system in 5 years ago. Summer is always a credit. Spring & autum $100- $150 bills. Winter sucks. Feed in tarrif 28c per kw till next december. 

     Just got this Spring bill today $80. 

  • D1cko Posts: 24
    Rockhampton
    Stock Poster D1cko
    10 Dec 2017 07:17 PM
    We have the biggest system Ergon will approve which is 6kw from memory. Thats 24 panels on the roof. It took them ages for Ergon to hook up the meter and theres a possibility the panels were switched on and wound the meter back. Since the new digital meter went in, we've used a shit load more than has been put back into the grid. There's a possibility that could be because the how water system is on the way out but we were gone for 3 days last week and came home to 150kwh used and 40 produced. That seems a bit strange to me. 
    That system cost about $8,000 from memory and we're waiting for Tesla to get their act together to put a battery in which is an additional $12,000. 
    I'm thinking we might have to look into how we have it set up at the moment. I think that since we're now using a lot more electricity, it might be better to have the hot water taken off solar and put back on Tarif 33. 
    We also looked into going off the grid but apparently Ergon won't approve that unless you're building a house out in the sticks away from existing power lines. 

  • Cropduster Posts: 204
    Brisvegas
    Stock Poster Cropduster
    10 Dec 2017 09:30 PM
    Sounds like a fault to ground with your HWS is milking your solar generation, i'd isolate it and get it looked at, does it trip the RCD often?


  • Soapbox2627 Posts: 2856
    Whyalla South Australia
    Forum Legend Soapbox2627
    11 Dec 2017 12:02 AM

    I remember the day we got the solor on, the old meter was spinning backwards, got some good credits, we went over seas for 6 weeks and came home to a great bill

    we thought this solor is shit hot, then the new meter was installed, still get the odd credits but nothing like before

  • Ferrett62 Posts: 215
    Canberra
    Stock Poster Ferrett62
    11 Dec 2017 09:12 AM
    Posted by D1cko on 10 Dec 2017 07:17 PM
    We have the biggest system Ergon will approve which is 6kw from memory. Thats 24 panels on the roof. It took them ages for Ergon to hook up the meter and theres a possibility the panels were switched on and wound the meter back. Since the new digital meter went in, we've used a shit load more than has been put back into the grid. There's a possibility that could be because the how water system is on the way out but we were gone for 3 days last week and came home to 150kwh used and 40 produced. That seems a bit strange to me. 
    That system cost about $8,000 from memory and we're waiting for Tesla to get their act together to put a battery in which is an additional $12,000. 
    I'm thinking we might have to look into how we have it set up at the moment. I think that since we're now using a lot more electricity, it might be better to have the hot water taken off solar and put back on Tarif 33. 
    We also looked into going off the grid but apparently Ergon won't approve that unless you're building a house out in the sticks away from existing power lines. 

     That sounds like there is a problem, my 2kw system on a sunny day will produce 13-15kw a day. Not great but half my panels face east so the system only works at capacity from mid morning to early afternoon when all panels are in direct sunlight and that is when sunny not cloudy or raining when I get as low as 4-5kw. Your usage over 3 days sounds high 150kwh ×10=month ×3=3 month billing period =4500 kwh per bill and at what I  pay per kwh would be $855, these are rough figures but sounds high. Instead of battery you could go for a solar hot water ( most states offer rebates for install) which would give you heating panels on the roof and a new h/w system. I don't know if the meter switches between solar and grid, meaning during the day you would still be paying for power just offset by what you are feeding in. My last bill showed 1100kwh for 3 months which includes winter, I have all led lighting in my house and an inverter refrigerator with gas h/water (gas for cooking & h/water only) I now longer use gas heater just reverse cycle air con. I don't know how much difference all this makes in the end, I am just a cheap cunt who hates paying bills.

  • Baloffski Posts: 470
    Victoria
    Stage 1 Poster Baloffski
    12 Dec 2017 12:45 PM
    Posted by Baloffski on 03 Dec 2017 06:57 AM
    This is a very interesting topic that should be explored more. 
    Years ago I organised Solar on the Castle roof with then wife, and it was like the max of 86 or 88 cents per. Good bloody value then. Think is a little lower than that now. 
    Going, to install solar soon on top of my current shoe box, but after more "current" information.
    Bloody hell, next gen be ridding "lectric M.C"s and be plugging into solar system when getting home, for electric ride the next day.

     Looking at this very interesting subject, again, I think I did not receive in the 80 cent bracket, but was in 60 cent bracket for sure. Which was great, but now must start all over again.

    After homework has been done and discussed with people, who know. 

    Do Not get "Dodgey Brothers" to install system.

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