keitha
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2024, hopefully the year I get out of P2P
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Post by keitha on Oct 7, 2020 10:31:49 GMT
Steerpikeinteresting comments because I was with EON they claimed 100% renewable, yet when they sent a statement it was 5% coal 20% gas ( or something very similar ) despite a number of emails I could not get them to admit that they were being economical with the truth. I've also seem a proposal that they will be able to use your EV as a battery, and one scientist said he couldn't see an issue if on days of high demand you plug your car in overnight at 50% and the next morning ready for your commute or business trip it's 5%. Personally one thing I'd like to see is wireless charging banned, at best it's 80% efficient at worst below 30% debugger.medium.com/wireless-charging-is-a-disaster-waiting-to-happen-48afdde70ed9
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keitha
Member of DD Central
2024, hopefully the year I get out of P2P
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Post by keitha on Oct 7, 2020 10:51:15 GMT
I see the Daily Mail readers are back in force.
I have solar and externally insulated stone house. No damp, no power bills, nothing, nada, well a small income.
I have solar in 12 months a 4KW system has generated 3MW, i suppose like many properties my roof is not aligned optimally. my usage to export ratio is pretty good at 1/1 so I've used 1.5 exported 1.5. ( but I've also drawn an addition 0.7MW from the grid over the year ) And before people say my usage is impossibly low I have 2 freezers, fridge, washing machine, electric kettle, microwave, dishwasher, TV etc yes I'm on octopus so I use my battery during the peak rate, and I do lots of stuff when the cost is low or negative, washing machine and Dishwasher can both be put on delayed cycles, and if the price is right I fill the battery and export it later.
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Steerpike
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Post by Steerpike on Oct 7, 2020 11:08:06 GMT
Steerpike interesting comments because I was with EON they claimed 100% renewable, yet when they sent a statement it was 5% coal 20% gas ( or something very similar ) despite a number of emails I could not get them to admit that they were being economical with the truth. I've also seem a proposal that they will be able to use your EV as a battery, and one scientist said he couldn't see an issue if on days of high demand you plug your car in overnight at 50% and the next morning ready for your commute or business trip it's 5%. Personally one thing I'd like to see is wireless charging banned, at best it's 80% efficient at worst below 30% debugger.medium.com/wireless-charging-is-a-disaster-waiting-to-happen-48afdde70ed9 Yes, it appears that EON make a LOT of use of Renewable Energy Certificates, other suppliers have direct relationships with renewable energy suppliers meaning that their use of certificates is a back stop only.
Clearly no one is going to use a service that renders their EV unusable when they need it regardless of what bonkers scientists say. The Octopus scheme uses domestic batteries to import and export when appropriate whilst ensuring that the EV is fully charged and that the battery retains a certain percentage for domestic use in the event of a power cut.
Totally agree on grossly inefficient wireless charging.
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Post by df on Oct 7, 2020 16:00:17 GMT
Who are you thinking of? An election would require all those "red wall" Tory turkeys to vote for Xmas, and (wivbreggzitduninnit) their primary attraction to the electorate is gone. I've noted the media is advertising KS more and more. He is definitely on the cards, but happened to be in the "substitute" party.
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travolta
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Post by travolta on Oct 7, 2020 16:05:36 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. ....but,but with solar powersurely you want to charge up when the sun is shining?
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Steerpike
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Post by Steerpike on Oct 7, 2020 16:25:13 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. ....but,but with solar powersurely you want to charge up when the sun is shining? That is what I do, but there are tariffs that offer rates that can mean that it may be better to charge at night and export at other times, see for example Octopus Agile and Tesla Energy Plan.
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Post by Deleted on Oct 7, 2020 17:35:13 GMT
I've spent a fair bit of time in the North sea, up at Orkney and sometimes as high as a wind turbine. I can tell you
1 I remember the one windless day, people came out of their houses to look at it. On Orkney there was concern.
2 I've hung glided up there and even when there is very little wind at sea level 200 feet up it is still windy.
3 NB the top of the tower is not the top of the blade path
We did some calcs on amount of hydrogen we would need to store to power the whole country for a day. It was a lot but..
A similar calculation of the size of the ch4 gas system, the crude oil system, the petrol/ diesel system and the coal storage system if this country shows just how wasteful the fossil fuel industry is. We store loads and loads of it. Removal and replacement with H2 is dead easy. The harder thing will be to upgrade the power distribution system to intelligent control. I recommend invest in TRIG, ITM and not the power grid companies.
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Post by Deleted on Oct 7, 2020 18:00:49 GMT
Just to put it in perspective the Dogger bank turbines will reach above 220 metres (not feet) approaching 1/4 of a kilometre. It is always windy up there
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Post by martin44 on Oct 7, 2020 19:07:06 GMT
There was a lot of talk 2 or 3 years ago regarding under sea turbines off Scotland.. is that still feasible, or indeed happening?
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mrk
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Post by mrk on Oct 7, 2020 19:43:41 GMT
There was a lot of talk 2 or 3 years ago regarding under sea turbines off Scotland.. is that still feasible, or indeed happening? I know that a company called Nova Innovation raised on Seedrs last year.
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travolta
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Post by travolta on Oct 7, 2020 20:07:20 GMT
......and the container ship ran on windmills and a battery... I dont think so. ditto Airbus? ditto Combine Harvester ditto just off to plug in the John Deere to plough/plant 100 hectares of winter wheat in clay soil.
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travolta
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Post by travolta on Oct 7, 2020 20:09:31 GMT
There was a lot of talk 2 or 3 years ago regarding under sea turbines off Scotland.. is that still feasible, or indeed happening? The energy needed to manufacture them outstrips performance. As does the maintenance,Greta.
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Post by Deleted on Oct 7, 2020 22:02:19 GMT
Hydrogen is the storage vector required. The Orkney tide/wind research centre is generating H2 for use in Kirkwell harbour initially to stop ships burning diesel to power them in harbour but soon to replace diesel as a ferry power source.
I have no idea of the structural integrity cost equation.
Airbus had 3 H2 designs, Boeing has 2 but took them off their website to curry favour with the orange one when he took power as Boeing makes a lot of money from US military investment.
For those who are interested in these things
these are serious industrial businesses investing in serious trial and active installations. The Orkney one is now set to be turned into a tidefarm. Orkney (pop 20k) has a branch university in Stromness where they work closely with the European Energy Centre see also www.orkney.com/life/industry/energy
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aj
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Post by aj on Oct 8, 2020 6:52:28 GMT
I recommend invest in TRIG, ITM and not the power grid companies. I don't understand the industry enough to settle on a particular country or company but my second best performing investment YTD has been INRG, and it's a fund(!). When a politician claims a 'green revolution' is coming I don't believe a word, but when the financial markets start pointing to it there are a lot of smart people putting a lot of money where their mouths are.
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Post by bracknellboy on Oct 8, 2020 7:31:29 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.
Question (which has only just come to my small mind). This model of V2G with EV batteries would mean that for many vehicles the batteries would go through significantly greater number of charge/discharge (even if only partial) than they would otherwise do. This is presumably then going to shorten the life of EV batteries compared to what they would otherwise be. And potentially very substantially shorten (unless of course pure duration of time is a bigger factor in lifetime than charging cycles, but I do not believe that is currently the case).
So this isn't a free lunch, and owners would need sufficient additional financial incentive to offset. Also, it seems likely that using highly distributed small batteries may be less environmentally freindly then using more centralised storage as one would think that the waste/recycle handling process for very many small batteries must be less good than equivalent larger storage facilities.
Thoughts ?
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