Electric cars.

Discussion in 'Off-Topic Discussion' started by pete, Apr 7, 2021.

  1. JWK

    JWK Gardener Staff Member

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    Half our panels face south the others west so we produce till the evening. We are on a market rate export tariff it can go as high as 60p a kWh during the tea time peak period.

    If your inverters are limiting it sounds like a design issue @Stephen Southwest as they should be specified to cope with the max possible. If it's a recently installed system you should have all the paperwork proving that as part of being accepted to export, MCS certification as I recall.
     
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    • Stephen Southwest

      Stephen Southwest Gardener

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      The restriction is that, as it was explained to me, inverters are more efficient at the top of their capacity, so it generally makes sense to install an inverter with less capacity than the panels - my understanding is that it effectively limits the central peak, but more than makes up for that by increasing the amount output at the shoulders...
       
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      • Stephen Southwest

        Stephen Southwest Gardener

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        Our installers were clear that, counterintuitively, it is more efficient to install an inverter with less capacity than the solar panel peak output.
        This is more true in the UK than in Arizona - the less time that the panels are running at peak, the greater that inverter efficiency matters. The more time they're running at peak, the more that avoiding inverter clipping matters.

        There are a variety of views about all this!
        Best solar inverter guide 2024 | The Independent
        How To Size an Inverter: Solar Inverter Sizing Explained | Discover Solar Power
        How Does Sizing A Solar Inverter Work?

        On reflection, another consideration, likely to become more common is this:
        When we had our V2G car charger installed, the peak power output had to be restricted to prevent too much load on the local electricity system by that added to the solar output. If I remember rightly, it was the inverter peak which was used for this calculation (?). So a larger capacity solar inverter may restrict the max output of a V2G car charger - a bit niche at the moment, but likely to become a wider consideration perhaps...
         
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        • gks

          gks Total Gardener

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          I see plans to build a gigafactory in Germany and Italy have been postponed, work on the factory in Germany has halted with the factory in Italy being postponed due to weak demand for BEV's.

          EV battery maker ACC halts German factory, delays Italy plant (msn.com)

          The markets share in Germany of new BEV's registered in May decreased by nearly 31% compared to same month in 2023
           
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          • Loofah

            Loofah Admin Staff Member

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            It will just exacerbate the issues, perceived or real, around EVs. Take up reduces as the infrastructure is weak... infrastructure isn't created as take up reduces...
             
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            • gks

              gks Total Gardener

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              If it was not for the fleet sector, the sales of new cars, all powertrains in the UK are woeful. A local car dealer in our area has sold up due to weak demand and they sell new VW and Kia cars, they said sales are worse than 2008. Last year new car registrations sold to the private sector accounted for 46% of the market share, it now stands at 38.1% .But the government are persisting on only helping the fleet sector, which shows they really don't understand the cost of living crisis, which is also having a negative impact on smaller independent car dealers.

              There are reports that because the market share of BEV's is currently at 16.1% in the UK, well below the ZEV mandate, that OEMs are considering decelerating their overall sales to increase the likelihood of staying compliant with the ZEV Mandate.
               
            • AcerObsessed

              AcerObsessed Apprentice Gardener

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              I'm not in charge of mine, sadly, so no idea.
               
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              • pete

                pete Growing a bit of this and a bit of that....

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                • Loofah

                  Loofah Admin Staff Member

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                  Well. Um.
                  Difficult to say just how dumb that move is :dunno:
                   
                • KT53

                  KT53 Gardener

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                  Surely the only dumb thing is anybody believing that a Government of any colour wouldn't come after income from a captive market. As the number of ICE driven vehicles diminishes the income to government from them also falls and needs to be replaced one way or another. The most obvious candidate is the vehicles replacing them.
                  The intention to charge VED on electric vehicles was announced in 2022 so is nothing new.
                  Now I'm the one feeling smug as currently I only pay £30 per year for my 1.2 litre petrol powered car. I suspect that will also change eventually.
                   
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                  • shiney

                    shiney President, Grumpy Old Men's Club Staff Member

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                    I think most people realised that the duty free EV would not continue that way. We cynical lot :th scifD36: here on GC have been saying so for a long time.
                     
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                    • Fat Controller

                      Fat Controller 'Cuddly' Scottish Admin! Staff Member

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                      Give them time, it is early days for this government after all. I'm sure they will come up with things that are much more dumb in the coming months.
                       
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                      • Retired

                        Retired Some people are so poor all they have is money

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                        Hi,

                        The government already have @Fat Controller I think it's called driveway tax; if not the government then it's the tax mad mayor of London. It's time there was revolt; enough is enough.

                        Why the dash to electric cars our Skoda Yeti 2.0L diesel attracts £35 per year road tax because its classed as clean which I'm sure will be cheaper than EV road tax shortly.

                        Years ago our stupid government wanted everyone in diesel cars then they stabbed them in the back; diesel is now the enemy; I'm surprised there isn't a wagon convoy the length of the M1 motorway heading to London.

                        I'm not against battery power; it's wonderful powering my Makita tools but I'd never want to live with a battery powered car. Our Yeti is a keeper and if Skoda started the Yeti production line again we'd buy another new Yeti.

                        Kind regards, Col.
                         
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                        • Fat Controller

                          Fat Controller 'Cuddly' Scottish Admin! Staff Member

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                          It is Sadiq Khan that is considering that one @Retired - call me cynical, but I reckon part of that is because anyone with a driveway is not being hit with parking permit charges that all go into council coffers.

                          One of the other ones that Labour are allegedly toying with, is a garden tax - so those of us who are fortunate enough to have garden space will be taxed presumably because it is unfair on those who don't have a garden. I mean, it is not as though us gardeners contribute anything to the economy each year, is it?

                          As for Rachel Reeves and her suddenly finding £20bn black hole, let's see how much they try and add to our tax bills for that - if it is anything more than £600 a year per working person in the UK, then we are definitely being had over (yes, I have done the calculations)
                           
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                          • shiney

                            shiney President, Grumpy Old Men's Club Staff Member

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                            Dig up the driveway and put down a grassed area with octagonal metal grid. We discussed this the other day to help solve the rain run off problems. :)
                             
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