Page 2 of 5 FirstFirst 1234 ... LastLast
Results 11 to 20 of 49

Thread: Household Solar power installation companies?

  1. #11
    Join Date
    May 2017
    Location
    Melbourne
    Posts
    1,397
    Quote Originally Posted by Roverlord off road spares View Post
    From what I could understand she mentioned Micro-inverters wouldn't work.
    it was a very quick opening conversation, we cant help you.
    All other companies really want a site inspection for accurate appraisal, if its not feasable then so be it.

    Notwithstanding what Windsock said about calculating from satellite photos, I still think that you'd need a site inspection. The height of the trees to the North would be a relevant issue and may not be discernible from the satellite photo.

    And a lot of houses deliberately put panels facing West so not having complete North exposure isn't a deal breaker.
    Arapiles
    2014 D4 HSE

  2. #12
    Join Date
    May 2017
    Location
    Melbourne
    Posts
    1,397

    Shading ....

    Arapiles
    2014 D4 HSE

  3. #13
    Join Date
    Nov 2008
    Location
    zuu!umop
    Posts
    1,365
    Quote Originally Posted by Roverlord off road spares View Post
    I had to ask her to repeat herself 3 times as I couldn't not understand her. Yes, you are right it doesn't matter what they sound like as long as they can be understood.
    Yep, accents can be a problem for me too. I have a hearing problem. If I don't hear something I will ask for a repeat. If that doesn't work I will ask for an explanatory email.

    Watch out for the drongo cowboy installer winging it to scam you out of thousands on the basis of them sounding suitable. I have seen such cowboys in action and it brings the industry into disrepute when a customer believes their hype and ends up with installed technology ill-suited to the situation through lack of appreciation of the engineering and calculations involved in good renewable energy system design.
    Last edited by windsock; 21st November 2020 at 04:17 AM.

  4. #14
    Join Date
    Apr 2019
    Location
    Brisbane
    Posts
    840
    If you have the time entertain a few companies at your house, if it is anything like Queensland there is no shortage to choose from.

    Steer clear of the cheap installs offered on TV.

    We settled with a company that was far from the cheapest....the sales guy wasn’t pushy, and was really good at explaining it all.

    If you have a tiles roof, it ls worth getting it checked and cracked tiles replaced prior to solar being installed.....

  5. #15
    p38arover's Avatar
    p38arover is offline Major Part of the Heart and Soul of AULRO Gold Subscriber
    Join Date
    Jan 1970
    Location
    Western Sydney
    Posts
    28,293
    I found out AFTER our first system was installed that the company and their gear were shonky. The first inverter failed and replaced under warranty about a month before they went into receivership. When the second failed. I managed to get one off ebay. When it failed I couldn’t find anyone who would repair it.

    You need to find a supplier who will be there when your system fails. That might mean BP or AGL, etc. The warranty is only as good as the supplier:
    Last edited by p38arover; 21st November 2020 at 08:16 AM.
    Ron B.
    VK2OTC

    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

  6. #16
    Join Date
    Feb 2010
    Location
    Melbourne
    Posts
    4,827
    Quote Originally Posted by Roverlord off road spares View Post
    I did and online quote request with one mob who had the ring me They said she did a satellite image view and said my neighbors tree on the north side shaded me and the trees in the back yard in the Nth East corner would rob me of sunlight.
    So by their reckoning I would have to live in a paddock with nothing around me for me to get Solar.
    Its is worth looking at your house on google earth. You can see shading impact on it. One of my neighbors gets 80% less free power from a similar sized system to whats on my roof. I am on the side of a hill and loose sunlight about 25 minutes before my work system. That's a minor issue. My neighbors is in the valley and get light much later and looses it earler and trees reduce it significantly for them.

    Trees and major shading may make solar a very marginal option.

    Lunch Google Earth and search for your address.


    Google Earth

  7. #17
    Join Date
    Jan 1970
    Location
    Logan
    Posts
    24,568
    It's good the company checked the satellite image, this is common practice by energy companies and local councils. I assume they would also do a site inspection. If there's a problem you would want to know, surely?
    In our case the site inspection showed shadows from trees could be a problem, but moving the panels higher on the roof peak and on elevated frames would avoid most of the problem.
    Keep in mind that the big advertisers on TV may be cutting costs by using lower quality panels.
    We went with a small local installer who uses RCS brand panels, which some research found to be a good brand.
    Incidentally, micro-inverters are more expensive and complicated. Our RCS are in two sections so if one half is shaded the other half still works.
    North is not the only option. Some people put some panels facing west to get late afternoon sun.
    Your local grid company may limit the maximum amount of solar power that can be put back into the grid. An installer should know.
    Check the size of the wire connecting the house to the grid. If it is too thin it can cause wastage and you may not get the full rebate on the solar you generate. Ours was only 6mm thick and we had it replaced with a 26mm wire.
    The inverter is likely to fail sooner than the panels, which is why the warranty on the inverter will be shorter. Do some research on inverters to get a good one. Ours is Sungrow.
    We found useful information on this site:

    Solar Matters | Off-grid, Storage, Panel Clean, Solar Maintenance, Victron Shop, Community

    Hope that's helpful.

  8. #18
    Join Date
    Nov 2008
    Location
    zuu!umop
    Posts
    1,365
    Here is your sun path diagram for Tecoma, Vic (as per your forum location). If you are in a very different location let me kow and I can generate the diagram for that location. Y-axis is the elevation angle of the sun path. X-axis is the azimuth angle of the sun path with 0 being true or solar north (if using a magnetic compass make sure any magnetic declination is accounted for).

    PVGraph Tecoma, Vic.jpg

    If you do not already have one, download and use an inclinometer app on a phone to assess the angle of the tops of your trees and use this angle against your sun path diagram to estimate how high the tree is in relation to the sun path. Be sure to account for differences in height between where you take the angle reading and where the potential solar array could sit.

    Alternatively, I also use an app called sun surveyor.

    Sun Surveyor (Sun & Moon) on the App Store
    Sun Surveyor: Your personal guide to the Sun and Moon - for iOS and Android.
    Sun Surveyor (Sun & Moon) – Apps on Google Play

    I use the paid android version (approx NZD16) from google play (links above). The paid version uses your phone camera to 'see' what you see and overlays the sun path over that in an augmented reality type view. You can then move your camera around your back yard and 'see' sun paths and ID potential shading elements for yourself. You can 'dial up' selected dates of the year to see again where the solar path is in the seasons and relative to the view field. Takes time to learn to use it but is a very useful assessment tool for solar access. I use it at every site I assess.

    I realise you accessing your roof area may be limited but if someone can actually place themselves in the potential position of the array physically on the roof, they can use the app to take photos of the solar access with the sun path overlaid in the photo.

    This app has a lot of other very useful tools to give you a greater understanding of solar geometry in everyday lives.

    I hope this helps. The more you understand the solar access the more you will be able to discuss with anyone doing a site visit.
    Attached Images Attached Images
    Last edited by windsock; 20th November 2020 at 08:56 AM. Reason: I editted to correct the altitude of the diagram but for some reason on the bottom of the page the diagram still has the incorrect altitude diagram. Use the diagram copied tot he message.

  9. #19
    Join Date
    May 2006
    Location
    Woolgoolga
    Posts
    7,333
    Mario, get companies to do a site inspection, if they don't jump on your roof with a SunEye and plot the sun path and show any shading issues, then don't bother with them. Companies that are lookimg via google, are just using near maps or whatever program to see how many panels they can fit on your roof, and for obvious shading.
    Damien
    ------------------------------------------------

  10. #20
    Join Date
    May 2012
    Location
    Bangkok
    Posts
    995
    Quote Originally Posted by Roverlord off road spares View Post
    which company to choose ?, it's a minefield, who to trust, any experience good or bad appreciated.
    While there are some sensible useful reply's to Mario's question, it may be worthwhile if some of you bother to read the QUESTION!

    As far as I know he does not have a helicopter, OR some other means of levitation for using some phone "app" designed for professional use, to take readings from the roof!

    Also, as far as I am concerned, he is completely justified in commenting about some "person" of what ever persuasion or creed, calling him that cannot speak clear and PLAIN English! Maybe she is moonlighting from the ABC!

    Rant over!

Page 2 of 5 FirstFirst 1234 ... LastLast

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!