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Post by Deleted on Oct 9, 2020 22:00:15 GMT
The energy needed to manufacture them outstrips performance. As does the maintenance,Greta. Its commonly stated, but im not sure its a fact, and if GRETA says it, then its definitely not... fullfact.org/online/wind-turbines-energy/ ... not sure if this is significant as far as underwater generation is concerned , but i would guess its fairly equivalent. Well I'd start by looking at Reynolds numbers for the two technologies. Tidal turbines do punish foundations, but turbines may not be the solution for the sea. The main Orkney machine is not a turbine but a wave follower. They are also trying a water-kite. Both of these put less stress on the foundations and may do better.
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keitha
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Post by keitha on Oct 10, 2020 10:04:27 GMT
I'm sceptical about vehicle-to-grid demand levelling. If I've had an electric car plugged in for a day, and I want to go now... I damn well want it to be fully charged. I do not want to have it say to me "Sorry, mate, but there was a bit of a local spike in demand, so if you wouldn't mind just stopping for a recharge at the services..."My understanding is that peak grid demand is around 16:00 to 19:00, EVs could help to support this demand and still easily be recharged for the next day by using electricity during the low demand window of 00:00 to 05:00, indeed an attractively priced tariff from Octopus does something very similar to this but currently only using battery storage rather than V2G EV batteries. Most EV owners charge their batteries to 100% only when they are going on a long trip, the usual routine is to top up each night to about 80% which is more than enough for the average day. I have octopus Agile so yes that's peak, but at the moment prices are increasing around 6AM for 2-3 hours ( when there is demand but solar etc output low ) MY Understanding of the "super intelligent" grid having read bits is that say we get another event like last year when 2 nodes failed and blacked out swathes of central and southern England then they would pull from peoples EVs etc to compensate. I think that the proposal with mk3 smart meters is you would have no control of this. Now there would have to be a better scheme than currently so that if they empty your EV they recharge it for free. At the moment they could pull and leave you paying a higher rate to recharge ( for example Octopus Go is 5P midnight to 5Am then 14p ( i think rest of the time ) so they could empty your EV at 4Am and you'd end up paying 14P for most of the charge rather than the 5P you expect. Another thing that should happen is householders should be rewarded for being green, for example a reduction in council tax if you have solar panels, limiting the standing charges for gas and electricity to your usage ( so in a summer people with solar & Storage pay 0 standing charge ) The same with water you should not pay more in standing charge than usage. Perhaps even Councils should weigh non recycling put out and charge those creating more ( although I can see this leading to more stuff being flushed ).
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keitha
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Post by keitha on Oct 10, 2020 10:44:31 GMT
OK "I use only 100% green renewable energy" and in reality how ? the latest figures I can find 12.5% nuclear ( is that renewable or green ) 8.5% Biomass ( I don't see that as green ) 5% interconnectors ( who knows where this comes from ) 27% Gas ( definately not renewable ) www.ofgem.gov.uk/data-portal/electricity-generation-mix-quarter-and-fuel-source-gbso how do you ensure the electricity that comes down your cables is in the other 45% , your supplier cannot supply only green energy you get whatever is in the grid at that moment in time it is impressive how much in 7 years we have reduced out use of coal. BTW I apply the same view to "my Plug in car produces no CO2 emissions", at the point of use I agree, but there are emissions producing the electricity and significant wastage in transmissions ( I believe the UK is about 6% ). so in reality to help save the planet we need to do more and close to home, so we need to surround the power hungry centre of the UK with Solar farms and Wind turbines. |
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adrianc
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Post by adrianc on Oct 10, 2020 11:16:10 GMT
My understanding is that peak grid demand is around 16:00 to 19:00, EVs could help to support this demand and still easily be recharged for the next day by using electricity during the low demand window of 00:00 to 05:00, indeed an attractively priced tariff from Octopus does something very similar to this but currently only using battery storage rather than V2G EV batteries. Most EV owners charge their batteries to 100% only when they are going on a long trip, the usual routine is to top up each night to about 80% which is more than enough for the average day. I have octopus Agile so yes that's peak, but at the moment prices are increasing around 6AM for 2-3 hours ( when there is demand but solar etc output low ) MY Understanding of the "super intelligent" grid having read bits is that say we get another event like last year when 2 nodes failed and blacked out swathes of central and southern England then they would pull from peoples EVs etc to compensate. I think that the proposal with mk3 smart meters is you would have no control of this. Now there would have to be a better scheme than currently so that if they empty your EV they recharge it for free. At the moment they could pull and leave you paying a higher rate to recharge ( for example Octopus Go is 5P midnight to 5Am then 14p ( i think rest of the time ) so they could empty your EV at 4Am and you'd end up paying 14P for most of the charge rather than the 5P you expect. All of which requires smart meters. And smartmeters communicate over the mobile phone networks, which makes them utterly useless for people like me, who have no mobile phone signal at home. Absolutely zero on any network... And before you say "But broadband", quite a few properties round here can't get ADSL, either. Our electricity to our little throng of properties comes from a transformer up a pole behind my garage. It was installed in 2015, replacing the original that had been installed in the 60s, when AC arrived here. There's 11kV three-conductor to it, but only two are tapped, so it's 230v single phase. It's 300A max, fused to 200A. For eight houses and a farm, same as the old one was... I asked the Western Power guys why the capacity wasn't being upgraded, and why not 3ph...? The answer was that the network doesn't have enough spare capacity upstream to support upgrades... Solar, of course, already gets feed-in tariffs. We aren't on mains gas here - our gas lives in a tank just inside the back gate. We don't pay sewage charges on our water bills, either, because we aren't on mains drains. There's a lot of the UK requires a lot of basic infrastructure upgrade before we can start to focus too hard on the fripperies.
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Post by martin44 on Oct 12, 2020 21:25:59 GMT
I have octopus Agile so yes that's peak, but at the moment prices are increasing around 6AM for 2-3 hours ( when there is demand but solar etc output low ) MY Understanding of the "super intelligent" grid having read bits is that say we get another event like last year when 2 nodes failed and blacked out swathes of central and southern England then they would pull from peoples EVs etc to compensate. I think that the proposal with mk3 smart meters is you would have no control of this. Now there would have to be a better scheme than currently so that if they empty your EV they recharge it for free. At the moment they could pull and leave you paying a higher rate to recharge ( for example Octopus Go is 5P midnight to 5Am then 14p ( i think rest of the time ) so they could empty your EV at 4Am and you'd end up paying 14P for most of the charge rather than the 5P you expect. All of which requires smart meters. And smartmeters communicate over the mobile phone networks, which makes them utterly useless for people like me, who have no mobile phone signal at home. Absolutely zero on any network... And before you say "But broadband", quite a few properties round here can't get ADSL, either. Our electricity to our little throng of properties comes from a transformer up a pole behind my garage. It was installed in 2015, replacing the original that had been installed in the 60s, when AC arrived here. There's 11kV three-conductor to it, but only two are tapped, so it's 230v single phase. It's 300A max, fused to 200A. For eight houses and a farm, same as the old one was... I asked the Western Power guys why the capacity wasn't being upgraded, and why not 3ph...? The answer was that the network doesn't have enough spare capacity upstream to support upgrades... Solar, of course, already gets feed-in tariffs. We aren't on mains gas here - our gas lives in a tank just inside the back gate. We don't pay sewage charges on our water bills, either, because we aren't on mains drains. There's a lot of the UK requires a lot of basic infrastructure upgrade before we can start to focus too hard on the fripperies. Your connection seems to get you on the forum ok.... cant understand why you cannot use a smartmeter. 
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adrianc
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Post by adrianc on Oct 12, 2020 21:31:02 GMT
All of which requires smart meters. And smartmeters communicate over the mobile phone networks, which makes them utterly useless for people like me, who have no mobile phone signal at home. Absolutely zero on any network... And before you say "But broadband", quite a few properties round here can't get ADSL, either. Our electricity to our little throng of properties comes from a transformer up a pole behind my garage. It was installed in 2015, replacing the original that had been installed in the 60s, when AC arrived here. There's 11kV three-conductor to it, but only two are tapped, so it's 230v single phase. It's 300A max, fused to 200A. For eight houses and a farm, same as the old one was... I asked the Western Power guys why the capacity wasn't being upgraded, and why not 3ph...? The answer was that the network doesn't have enough spare capacity upstream to support upgrades... Solar, of course, already gets feed-in tariffs. We aren't on mains gas here - our gas lives in a tank just inside the back gate. We don't pay sewage charges on our water bills, either, because we aren't on mains drains. There's a lot of the UK requires a lot of basic infrastructure upgrade before we can start to focus too hard on the fripperies. Your connection seems to get you on the forum ok.... cant understand why you cannot use a smartmeter. Because smartmeters don't use broadband (FTTP here...) They use cellular.
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Post by martin44 on Oct 12, 2020 21:52:07 GMT
Your connection seems to get you on the forum ok.... cant understand why you cannot use a smartmeter. Because smartmeters don't use broadband (FTTP here...) They use cellular. Thats unlucky... most cellular co's claim to cover over 99% ... that said, where we live, we just got upgraded to 7 meg broadband, when i checked it was 3.4.. and we have a new 3 mobile broadband router that dunt work.. 
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adrianc
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Post by adrianc on Oct 12, 2020 21:59:27 GMT
Because smartmeters don't use broadband (FTTP here...) They use cellular. Thats unlucky... most cellular co's claim to cover over 99% ... ...of the population. Our council ward has a population density of 29 people/km2... If you took a 1km square with here as the centre, I don't think there'd be that many. I could name them...
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keitha
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Post by keitha on Oct 13, 2020 8:55:06 GMT
Solar, of course, already gets feed-in tariffs. yes I get feed in but usually at a low rate, mostly around 5P per KWH, because mine is a more recent installation than some of the older ones getting 15-20P per KWH, having said which in September my feed in payments were more than my charges. September is a good month as it contains the equinox so 50% of the year should be better and 50% worse.
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adrianc
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Post by adrianc on Oct 13, 2020 11:19:25 GMT
Solar, of course, already gets feed-in tariffs. yes I get feed in but usually at a low rate, mostly around 5P per KWH, because mine is a more recent installation than some of the older ones getting 15-20P per KWH, having said which in September my feed in payments were more than my charges. September is a good month as it contains the equinox so 50% of the year should be better and 50% worse. Yes, FITs fell as install costs fell.
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Post by Deleted on Oct 13, 2020 13:07:20 GMT
yes I get feed in but usually at a low rate, mostly around 5P per KWH, because mine is a more recent installation than some of the older ones getting 15-20P per KWH, having said which in September my feed in payments were more than my charges. September is a good month as it contains the equinox so 50% of the year should be better and 50% worse. Yes, FITs fell as install costs fell. The new green deal looks interesting for thermal solar.
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keitha
Member of DD Central
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Post by keitha on Oct 13, 2020 22:40:32 GMT
Yes, FITs fell as install costs fell. The new green deal looks interesting for thermal solar.
didn't give me a price for a system but saying i could make 7K over 9 years, my issue is I think my EPC bears little relation to reality ( reality is a fair bit lower )
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Post by bernythedolt on Oct 14, 2020 10:53:28 GMT
My understanding is that peak grid demand is around 16:00 to 19:00, EVs could help to support this demand and still easily be recharged for the next day by using electricity during the low demand window of 00:00 to 05:00, indeed an attractively priced tariff from Octopus does something very similar to this but currently only using battery storage rather than V2G EV batteries. Most EV owners charge their batteries to 100% only when they are going on a long trip, the usual routine is to top up each night to about 80% which is more than enough for the average day. [...] Another thing that should happen is householders should be rewarded for being green, for example a reduction in council tax if you have solar panels, limiting the standing charges for gas and electricity to your usage ( so in a summer people with solar & Storage pay 0 standing charge ) The same with water you should not pay more in standing charge than usage. Perhaps even Councils should weigh non recycling put out and charge those creating more ( although I can see this leading to more stuff being flushed ). The costs of providing and maintaining the infrastructure all the way from source to your premises are the same for a low consumer as a high consumer. Shouldn't both types therefore contribute the same daily standing charge? The fact that you draw less energy than your neighbour has no impact on the infrastructure cost of delivering that energy to you both. It's interesting that in your separate thread about council tax recently, you argued it would be fairer if everyone were paying the same. I personally think the "flat fee plus consumption charge" is spot on as a charging model. I see it as exactly equivalent to "Road Fund Licence plus fuel duty" where every driver contributes at least a bare minimum to the roads infrastructure (supposedly), and then somewhat more if they actually choose to drive over it. That's why, IMHO, it would be wrong to scrap RFL (VED) and lump it on to extra fuel duty. Even an occasional road user needs to appreciate there is a significant cost behind providing the road for his/her very occasional use, and it's only fair that s/he contributes a meaningful figure (the VED) towards that. (I appreciate these days it all goes into the big Treasury pot, I'm talking here of the original principle).
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Post by Deleted on Oct 14, 2020 10:54:37 GMT
I'm lucky, Mrs Bobo is an environmental Engineer. Most changes to improve EPC are very very cheap just sometimes a bit messy. We had our damp sorted out for £250 (house is partially underground) we had all our internal insulation brought up to snuff for about £50 though that included skip-diving and a bit of crawling around in odd spaces, removal of carpet to expose stone/concrete slabs to sunshine certainly improved early evening warmth, solar cells and integrated hot water system was one big load of money but paid for itself with the hot water cheat at £250 was a great deal. External insulation was free thanks to a green friendly deal in the Wakefield/Leeds conurbation between a Chancelor and the local councils.
Most important is get the damp sorted first then anything else is possible.
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Post by Deleted on Oct 14, 2020 12:51:37 GMT
[...] Another thing that should happen is householders should be rewarded for being green, for example a reduction in council tax if you have solar panels, limiting the standing charges for gas and electricity to your usage ( so in a summer people with solar & Storage pay 0 standing charge ) The same with water you should not pay more in standing charge than usage. Perhaps even Councils should weigh non recycling put out and charge those creating more ( although I can see this leading to more stuff being flushed ). The costs of providing and maintaining the infrastructure all the way from source to your premises are the same for a low consumer as a high consumer. Shouldn't both types therefore contribute the same daily standing charge? The fact that you draw less energy than your neighbour has no impact on the infrastructure cost of delivering that energy to you both. It's interesting that in your separate thread about council tax recently, you argued it would be fairer if everyone were paying the same. I personally think the "flat fee plus consumption charge" is spot on as a charging model. I see it as exactly equivalent to "Road Fund Licence plus fuel duty" where every driver contributes at least a bare minimum to the roads infrastructure (supposedly), and then somewhat more if they actually choose to drive over it. That's why, IMHO, it would be wrong to scrap RFL (VED) and lump it on to extra fuel duty. Even an occasional road user needs to appreciate there is a significant cost behind providing the road for his/her very occasional use, and it's only fair that s/he contributes a meaningful figure (the VED) towards that. (I appreciate these days it all goes into the big Treasury pot, I'm talking here of the original principle). Watch out or we will be going down the Poll Tax fiasco, every tax is designed to cost the rich more than the poor, equivalence is just a happy piece of luck see also BBC tax, Car license tax etc.
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