Electron Summit White NK13...107k 91.5 and rising
Anyone else noticed the unusual Agile tariff profile for today (Easter Sunday)? Any thoughts on possible reasons?
Well, it worked for me. I plugged the car in @ 1pm and we shifted washing forward from Monday and our Sunday lunch back to 4pm ! I see its back to a cheap rate tonight so I'll pop out later for a burn round in Sport mode so I can help out againThat’s what Octopus are doing here, providing a balancing mechanism by encouraging increased use
Yeah, pretty close. I used to work in the gas fired part of the grid doing data analysis so this is what drives my following few lines.It’s hugely complicated and I wish I understood it better. My, probably flawed, understanding is that we do have periods of excess because we can’t just turn off nuclear and some of the gas plants, so when the wind blows and the sun shines and usage is low, due to the way contracts are organised we end up paying generators to shut down. That often ends up being the renewables, as they’re more variable. What’s actually being paid for is balancing of the grid. So we pay generators to stop but could just as easily pay for balancing through increased consumption. That’s what Octopus are doing here, providing a balancing mechanism by encouraging increased use. It’s also what the battery storage folk do. They effectively trade energy by buying in when its cheap, and help balance the grid in doing so, and output when it’s expensive, likewise providing a useful support to the grid.
Apparently not, the spike in demand when Octopus Go kicks in at 12:30 caught the grid out a few weeks ago. With E7 there will be no surprise, the weather and past demand will make the load predictable and so gas turbines will be on standby to balance the load, but a wobble in the frequency set off alarms at one of the nuclear stations a few weeks ago. Presumably a warmer night with less spinning momentum.I doubt "all the cars" currently on the road barely makes a dent compared with existing installed base of electric storage heaters, which will almost all switch on around midnight as the E7 rate kicks in...
That will be the case and so will delayed start to charging. I wondered why my Rolec starts 10 minutes after my projected set time and I guess it will be to prevent a surge in demand. Now Octopus will need to factor in different start times to their offerings, that is off the hour and half hour.... it can’t happen I suppose because of the metering, not yet anyway. What was interesting was the small jump in demand that caused the big flicker in frequency, it was less than .5 GWh. If the electric mountain was pushing water uphill, they could stop it just before the surge to compensate. The problem wouldn’t be so noticeable if we were still relying on fossil fuels and nuclear. Offshore wind doesn’t have heavy turbines to add inertia, particularly those with HVDC connectors which provide AC in tune with the grid. I saw Scottish Power had developed something which helped provide inertia up in the wilds of Scotland (not Tenants!) I guess it has some batteries attached to it.The problem with cars and the current lockdown restrictions is that you just don't know who wants to charge their car when, for how long and at what rate and that's where the smart chargers need to communicate any planned charging back to the grid. I have no doubt there is an element of this going on already.
I'd imagine when commuting becomes more and more stable it will become easier to forecast demand.
Oh I dunno, there’s about 150k BEV’s in the U.K. from what I understand and if all of them plug in and draw at least 7kw, the rough maths states that’s over 1GW in demand not including PHEV’s and other electric devices like storage heaters and this will be happening just when the grid is winding down for the evening.I doubt "all the cars" currently on the road barely makes a dent compared with existing installed base of electric storage heaters, which will almost all switch on around midnight as the E7 rate kicks in...
Except our good old friend 'diversity' steps in and not all of them will be charging, and of course some on Agile who only need a small charge or top up may not step in at (say) 4.5p but may be waiting for the 3.5p slots.Oh I dunno, there’s about 150k BEV’s in the U.K. from what I understand and if all of them plug in and draw at least 7kw, ..