Hydro

Discussion in 'Renewable Energy' started by wilber, Nov 28, 2017.

  1. wilber

    wilber Member

    Location:
    wales
    Anyone know much about Hydro and whether or not it is still worth it? What size scheme is needed to justify it etc. Site in question would be purely for export as we dont have any infrastructure near by.
     
  2. Y Fan Wen

    Y Fan Wen Member

    Location:
    N W Snowdonia
    FIT is between 7 and 8p per unit. I'm still in negotiation with my manufacturer to upgrade the 1970s set to make it eligible (12-15kw). Cost will be around 25k and, going on current performance, annual return will be about 5k. If it was all brand new including penstock then cost would be 35-40k.
     
  3. renewablejohn

    renewablejohn Member

    Location:
    lancs
    Depends whether you have 3 phase connection for export. Red tape is still the biggest hurdle.
     
  4. wilber

    wilber Member

    Location:
    wales
    3 phase not far away it has very good flow but i orginally wasnt sure of the head, however walking up the river i think there could be more than i orignally thought. It also has an old concrete dam which is half still their (looks like someone pulled it down) as its something to do with the old estate the land once belonged to.

    Can anyone reccomend a decent company to contact?
     
  5. Y Fan Wen

    Y Fan Wen Member

    Location:
    N W Snowdonia
    I agree about the red tape. Back in the 70s you jfdi. I have an historic open ended license but all new ones issued are time limited. Doesn't mean they can't just withdraw mine any time they like either!
    Gilbert Gilkes & Gordon
    Kendal

    Evans Engineering
    Launceston

    Post some pics of the site and a map reference.
     
  6. renewablejohn

    renewablejohn Member

    Location:
    lancs
    I find the projects need to be very big for Gilkes to be interested and some people have been let down by Evans but worth getting a quote off both.
     
  7. renewablejohn

    renewablejohn Member

    Location:
    lancs
  8. A1an

    A1an Member

    Have you thought about a leased scheme? Reduced income but no capital outlay.

    We have three 500kw schemes, two of them are leased to a Hydro company.
     
  9. Y Fan Wen

    Y Fan Wen Member

    Location:
    N W Snowdonia
    Gilkes did sell quite small Turgos, one or two of which can be seen on youtube. Have they given up on those types of schemes?
     
  10. renewablejohn

    renewablejohn Member

    Location:
    lancs
    Was speaking to them at the All Energy show in Glasgow and they where really not interested in the small turbines which was comfirmed by comparing prices to others at the show.
     
  11. wilber

    wilber Member

    Location:
    wales
    I'll get some pictures on the weekend and post them up.
     
    renewablejohn likes this.
  12. 6480

    6480 Member

    I have a river wit a great flow all year round .currently have a simple head of fourthteen foot working a ram pump . could this head of water work a small turbine
     
  13. renewablejohn

    renewablejohn Member

    Location:
    lancs
    Anything over 1 mtr can easily work a turbine obviously the bigger the head and flow the more output you get.
    If you go on the powerspout site there is a power calculator giving a good guide on likely power for a given head and flow.
     
    6480 likes this.
  14. newhollandfarmer

    newhollandfarmer New Member

    Location:
    North Wales
    Does anyone know on average how much water you would be potentially allowed to extract from a stream to power one? I seem to recall its 25%?
     
  15. renewablejohn

    renewablejohn Member

    Location:
    lancs
    Can be 100% if you have a dam which you can regulate.
     
  16. newhollandfarmer

    newhollandfarmer New Member

    Location:
    North Wales
    Is that something that the environment agency would approve?
     
  17. A1an

    A1an Member

    Would be, subject to a hydrology survey.
     
  18. renewablejohn

    renewablejohn Member

    Location:
    lancs
    Definitely if you can justify on grounds of flood prevention. It was the EA which recommended putting in the surge pools to stop our stream from flooding the house.
     
  19. newhollandfarmer

    newhollandfarmer New Member

    Location:
    North Wales
    Though as much, bet it costs a few quid to get it done to. I did a basic calculation as follows;
    Cross section of the stream is 0.4M/squared. (approx)
    Average estimated velocity is 0.5M/second.
    Therefore 0.4 x 0.5 = 0.2cuM/second (200Ltrs) X 0.25 (extraction Allowance) = 50 ltrs/second.
    Head is 100M
    so that equates to;

    50x100x9.81 = 49050 Watts @ 60% efficency that's 29430 Watts/1000 = 29.43Kw x 0.07 (FIT) = £2.060 Hr.

    £48.96 a day
    £342.72 Week
    £17821 P/a
    all depends on the amount that can be extracted though. :)
     
  20. newhollandfarmer

    newhollandfarmer New Member

    Location:
    North Wales
    Thanks for you input, I don't think it can be justified for flood prevention its way off the beaten track.
     

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