is solar worth it??

Discussion in 'Motorhome Chat' started by do1977, Jun 3, 2009.

  1. do1977

    do1977 Read Only Funster

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    i want to no for anyone has solar pannels and are they worth getting?

    i have 8 110amp batters and a inverter that runs my rv when i am on the move i dont hook up to the mains i use the engine when driving to charge or my genny

    so is it worth me getting solar??
     
  2. Wildman

    Wildman Read Only Funster

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    2x 130W panels will work a treat for you, you have a decent battery bank so can use them to good effect. during the winter they will keep your batts topped up. got to be good. They will put a steady charge into the system all daylight hours, for zero fuel cost not noise, no exhaust.
     
    Last edited: Jun 3, 2009
  3. do1977

    do1977 Read Only Funster

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    ok i have seen so many pannels and where is the dest place to get them or is there a make i should look for?
     
  4. Wildman

    Wildman Read Only Funster

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    fleabay will give you an idea of prices, maybe someone else can help with that one. You also have to think of installation, charge controller etc however with that size battery bank I doubt a controller would be necessary. Go to a speciallist firm for advice on size and type, in fact ask several as it is interesting to see how many different answers the "experts" will give.
    With 880amp/hrs of storage you need to work out how much power you use. for every amp you use allow 4 at least amps of charge as the output will never be met under normal conditions. see the thread how much charge do you get from your solar panel. For a real time idea of what to expect.
     
  5. scotjimland

    scotjimland Funster Life Member

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    Well worth it if you are not going to use sites with ehu

    Last year I spent eight months in France on aires, some with ehu, the ones without I used my small Honda genny for charging.
    Downside to the genny is fuel cost and having to stay with the RV while charging .. not to mention noise and annoying the neighbours..

    I plan to fit 2 x 130watt panels when funds permit.. two panels and a decent charge controller and self fitting I estimate about £1400 - £1500 .. a considerable investment and it would talk a long time to get the payback if I wasn't full time.. £1500, that buys a lot of site nights with ehu..
     
    Last edited: Jun 3, 2009
  6. do1977

    do1977 Read Only Funster

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    i have got my old rv up for sale it has 2 pannels on it and charges 4 to 5 amps on a summy day what do you think they are ( 40w 60w ect )
     
  7. hobson

    hobson Read Only Funster

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    I'd say definitely worth having if you have the cash, our RV had a 2x4 foot panel already fitted and it's been worth its weight in gold! especially now we aren't on EHU, we'd have killed the batteries if we hadn't had it!
    also worth a look if it's not for a huge power supply or if it's to trickle charge are the smaller briefcase chargers, you can pick them up for £50-60 upwards now, they used to be a bit rubbish but the technology is progressing all the time, have a look at Solar Gorilla (about £150) and Maplins own...
     
  8. scotjimland

    scotjimland Funster Life Member

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    5A x 17v = 85 watt so probably a couple of 40's ?
     
  9. Douglas

    Douglas Read Only Funster

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    The answer to this starts with a couple of questions!

    How often do you live in the MH?

    Where do you live, IE the UK or further south?

    At one extreme living in the UK and only using the MH for holidays and weekends then I would say no! it takes too long to recoup your money.

    At the other end, living most of the year and mainly south of latitude 40' then I would say yes.

    Now! if you are planning a trip to Morocco then Wait until the before buying the panels as the are much cheaper there.

    I have lived in my MH for 5 years for about 8 months a year and have never been connected to a mains supply or a generator with 2* 80 watts and a 30 watt panel on the roof.

    Doug...
     
  10. scotjimland

    scotjimland Funster Life Member

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    Now he tells me ... :Doh::Doh:

    :Laughing:
     
  11. do1977

    do1977 Read Only Funster

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    i just going to start livining in the rv and i am going to pu a 26" tv and sat in it i will se in the south of uk most of the time but europe is the place i want to go
    i want to use it without needing hook up
    i do have the LPG genyas back up

    i have seen these http://cgi.ebay.co.uk/225W-Photovoltaic-Solar-Panel-made-in-germany_W0QQitemZ170337566458QQcmdZViewItemQQptZLH_DefaultDomain_205?hash=item27a8e8fefa&_trksid=p3286.c0.m14&_trkparms=66%3A4%7C65%3A1%7C39%3A1%7C240%3A1318%7C301%3A0%7C293%3A1%7C294%3A200
     
    Last edited: Jun 3, 2009
  12. scotjimland

    scotjimland Funster Life Member

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    Hi

    follow the link from the ebay seller then download the pdf for full panel specs

    the 225 watt panel has an output of 46.83volts , no good for a 12v system.

    they do have a 90watt panel with 17.54v output which is suitable
     
  13. vwalan

    vwalan Funster

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    hi jim ,doug is right they were cheaper in maroc but now its almost as cheap here ,look on google or e.bay. i have 3x80w work lovely all summer here . powering my house fridge +deepfreezer through inverter at moment. (long extention lead). in winter never use sites in spain or maroc always have power only use genny for welding repairs . saw some chinese panels for about 250 pounds last week on ebay.
     
  14. JJ

    JJ Funster

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    Check with Funster C.L.S... he can supply and fit solar systems...

    JJ
     
  15. Douglas

    Douglas Read Only Funster

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    Jim, Its possible that the 46volt panels can be rewired for a 12volt system, but the figure of 46volt seems a strange one, the common panel voltage is about 17 volts per 12volt battery. IE 17v for 12v then 34v for 24v so maybe they were meant for another use.

    Doug..
     
  16. scotjimland

    scotjimland Funster Life Member

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    Hi Doug

    I agree, that was why I advised to look at the specs on the pdf before buying .. this information should be clear on the ebay advert... which it aint.

    Jim
     
  17. vwalan

    vwalan Funster

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    think its for linking to get 220/40. bit like some of the enormous panels in spain .
     
  18. scotjimland

    scotjimland Funster Life Member

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    I think you are correct,

    for domestic use and also pumping back into the grid..
     
  19. vwalan

    vwalan Funster

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    i looked at it here. buy 20or30 panels in maroc, use a special inverter n go through an export metre .but here you must let the authorised fitting company supply panels 500 for what you used to pay 120 in maroc. never make it pay on there figures but mine would have been great. 3 times the cost of nuclear they pay you for green energy (only 2times now)so i use as much as i can from the truck n keep my bills down in the house. i take it you looked at the panels from china , the price is getting better every year. i still use gas lights in truck heat n warmth . i find ring good for inverters but you need to buy a few to get the price right, club together makes sense. :Rofl1::Rofl1:
     
  20. hilldweller

    hilldweller Funster Life Member

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    Perfectly OK with the right regulator.

    Though I don't know if that regulator is actually made !
     
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