Renewable energy sources - the good, the bad and the ugly

Discussion in 'Off-Topic Discussion' started by Fat Controller, Mar 3, 2021.

  1. JWK

    JWK Gardener Staff Member

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    I like Robert Llewellyn on Fully Charged but am surprised he paid PPI for 18 years without knowing what it was!
     
  2. shiney

    shiney President, Grumpy Old Men's Club Staff Member

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    I'll have a look at that video when I have time as it wasn't practical to have battery storage at home when I had my solar panels installed. If they're heavy or large I still won't want them at the moment.

    I've always felt that PPI was an unnecessary evil but I do know lots of people that can fix things for me at a reasonable price - and promptly. I have my own list of trusted traders :)
     
  3. gks

    gks Total Gardener

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    They are roughly 1.2m x 0.8m and weigh 110kg. They have a capacity of 13.5 kWh, so it will depend on what your panels generate if it is worth investing in. To purchase one and have it fitted will be somewhere in the region of 10k, that is based on 0% vat. You will only pay 0% vat when the system and installation is suppplied and fitted by a qualified tradesman.
     
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    • shiney

      shiney President, Grumpy Old Men's Club Staff Member

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      Thanks for the info :blue thumb:

      That price would make it totally uneconomical as we use a large proportion of our production anyway. We have underfloor heating in bathroom/kitchen/summerhouse plus heated propagators plus being at home a lot of the time. :)
       
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      • JWK

        JWK Gardener Staff Member

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        I've been lurking on other energy forums where folk charge thier Tesla power walls overnight when rates are low then use it or even export it back when rates are higher. With a bit of automation it can pay for itself although it's not for me, we don't have the space nor want to risk money in that way.

        With my solar panels I'm on an agile export tariff that pays market rates at half hourly intervals. Sometimes I'm getting over 40p/unit other times 7p. It averages at 22p (this was pre the October price cap). So there is quite a variation through the day, peak times like breakfast cost more or pay more depending if you are importing or exporting.
         
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        • shiney

          shiney President, Grumpy Old Men's Club Staff Member

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          As I get the old Feed In Tariff the payments I receive are totally different. I get about 16p (it rises with inflation) for every kWh I produce whether I use it or it goes back into the grid and also get something over 5p for what goes back into the grid - except they don't/can't measure it and calculate it as half of my production :scratch:. Stupid system as we always use well over 50% of our production unless we go on holiday. So, in theory, I can use all my production and still get paid the 5p for half of it. That's why we use washing machine etc. when the sun is giving us the best production.
           
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          • Sheal

            Sheal Total Gardener

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            • NigelJ

              NigelJ Total Gardener

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              I don't know about the Holtec ideas, but Rolls Royce have been working on the idea for some time. It's a development of the reactors used in UK nuclear subs.
              See here Small modular reactors
              Very close to a prefab nuclear station. Will probably, initially, go into existing reactor sites with decommisioned reactors, as these have the electricity and transport infrastructure in place; also the principle of a nuclear reactor on that site has already been approved.
              The SMR reactors should be safer and "fail safe" in the case of problems.
              Downside:
              NIMBYs will be out in force at the slightest hint of an SMR locally.
              Waste fuel has to be dealt with.
              At the end of life you have the waste reactor to dispose of.
              I believe that most of the RN's decommissioned nuclear subs have been stripped of fuel, but still sit in naval dockyards with the reactors awaiting a solution. I suspect the USA has similar issues and the Russians have disposed of a number of reactors and subs into the Arctic ocean, others are stacked on land near Murmansk. Given global warming those under Arctic ocean could be an issue.
               
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              • Fat Controller

                Fat Controller 'Cuddly' Scottish Admin! Staff Member

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                I am all for them and indeed I believe that we need a real mix of power generation sources (wind, solar, hydro, nuclear, incineration/biodigestion and anything else we can throw at it. We should and every country should have an excess of ability to generate - not necessarily generating all the time, but there if needed. Indeed, with a heavy excess, then things such as desalination plants would be more possible, as could hydrogen production. One thing is for sure, we are not going to be able to carry on the way we are.
                 
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                • Loofah

                  Loofah Admin Staff Member

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                  • noisette47

                    noisette47 Total Gardener

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                    Certainly the air/air pumps are just glorified electric heaters when the ambient temperature is low, so hardly ideal, especially the further north you are.
                    If 'disruption' is a problem, why don't the government concentrate on incorporating them in new builds, along with solar. No disruption involved!
                     
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                    • gks

                      gks Total Gardener

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                      • Jocko

                        Jocko Guided by my better half.

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                        I see today a report that says:
                        Great Britain produced a record amount of wind-powered electricity in 2022, according to the National Grid.
                        More electricity came from renewable and nuclear power sources than from fossil fuels gas and coal, the second highest after 2020.

                        Scotland is doing great in wind power mainly down to the fact we allow on-shore wind farms. There are dozens of turbines on the hills south of Edinburgh. The largest in-shore wind farm has 215 and there are an estimated 19,000 on-shore turbines in Scotland with plans to double that number.
                         
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                        • gks

                          gks Total Gardener

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                          Watched panorama regarding data centres, interesting if true, but it does make you think.

                          In Ireland they say the new data centres under construction would use the same energy as 200k new houses. In London, the GLA have said that new housing developments might have to be delayed until 2030 due to a lack of capacity in the grid. But its not all about energy, while the south experienced house pipe bans last year, did the data centres experience water restrictions, no.

                          New homes may be delayed by power grid capacity - BBC News
                           
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                          • shiney

                            shiney President, Grumpy Old Men's Club Staff Member

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                            Apparently the main culprit is the enormous power needed to cater for increased storage facilities from the massive increase in people using Cloud storage.
                             
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