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Author Topic: Gridwatch Overnight Tonight 14/06/18  (Read 1892 times)
nowty
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« on: June 13, 2018, 10:41:48 PM »

How low is gas going to go overnight with storm Hector boosting wind generation ?

Gas currently 7.7GW @ 22:40 with wind at 7.6GW.

With about 5GW of demand to drop off and wind probably going over 10GW gas is going to be near zero in the small hours.

And tomorrow its still going to be windy with quite a bit of solar so maybe another record gas low in the daytime too.
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dan_b
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« Reply #1 on: June 13, 2018, 10:46:09 PM »

Gas has dropped to 6.1GW (22:50) but there’s still 0.5GW of coal on the grid?  Weird!  Mind you Biomass has dropped back to 1GW too - it’s normally almost always higher than that
« Last Edit: June 13, 2018, 10:48:06 PM by dan_b » Logged

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knighty
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« Reply #2 on: June 14, 2018, 12:38:33 AM »

coal 0.26
nuke 7.3
gas 4.73
wind 7.68


12.46am

:-)
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MeatyFool
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« Reply #3 on: June 14, 2018, 02:58:19 AM »

Coal .48
Nuke 7.54
Gas 3.78
Wind 7.62

03:06!

Meatyfool..
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oliver90owner
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« Reply #4 on: June 14, 2018, 06:52:36 AM »

I think they would keep some gas running at all times.  Wind generation may well need to be curtailed for this to happen but they need some form of frequency control and fast response generation, should the high winds speed close down a large wind farm, for example. 

Pumped storage would be filling on cheap energy and would not wish to generate at such periods.

It is a balancing game - whether to keep gas as spinning reserve only or to make some power.  It costs money to maintain the grid in a state of readiness, one way or another.
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oliver90owner
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« Reply #5 on: June 14, 2018, 07:06:52 AM »

Doubtless(?) some journalist will soon be spouting about a new record for wind production - continuously exceeding gas generation for more than eight hours...
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brackwell
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« Reply #6 on: June 14, 2018, 07:29:48 AM »

Wind was probably curtailed last night  https://www.bmreports.com/bmrs/?q=generation/windforcast/out-turn

Prices went negative and the French and Dutch interconnectors went negative.  https://www.bmreports.com/bmrs/?q=eds/main

The lowest i have ever seen the gas go was  1.2 Gw about 5yrs ago and coal went about the same.   Interesting they are keeping the coal spinning in rediness but they get special payments for this.
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dan_b
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« Reply #7 on: June 14, 2018, 07:34:45 AM »

Wind definitely curtailed - this from EnAppSys on Twitter

As the wind generation builds this evening it is highly localised with 5GW in Scotland stuck behind the various Scottish constraints. Almost 3GW being bid off at an average of £70/MWh and Foyers and Cruachan absorbing power for free. enrenew.netareports.com/#gbwindbylocat… ^PH
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Mk1 ImmerSUN DHW diverter
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GarethC
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« Reply #8 on: June 14, 2018, 07:47:00 AM »

So when more inter connectors are built, international and to Scotland, there will be much less curtailment in times like this?
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M
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« Reply #9 on: June 14, 2018, 07:51:19 AM »

So when more inter connectors are built, international and to Scotland, there will be much less curtailment in times like this?

Yep, and the steady deployment of storage and EV's that should prove to be very complimentary and timely.
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Just call me Mart.     Cardiff: 5.58kWp PV - (3.58kWp SE3500 + 2kWp SE2200 WNW)
M
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« Reply #10 on: June 14, 2018, 07:52:11 AM »

Just updated Gridwatch and coal has gone zero.
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Just call me Mart.     Cardiff: 5.58kWp PV - (3.58kWp SE3500 + 2kWp SE2200 WNW)
linesrg
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« Reply #11 on: June 14, 2018, 08:17:42 AM »

So when more inter connectors are built, international and to Scotland, there will be much less curtailment in times like this?

As I've recently commented I understand the need for more interconnectors but have a different view when it might mean having one as little as 0.6km from our house!!!!!!!

Have charged the Zoe here at home overnight - a mere 38.7kW.

Regards

Richard
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16 BP380 on a Lorentz ETATRACK1000/SB1700, 16 Chinese 80W/SB1700, 16 BP380/SMA SB1700. CTC GSi12 + Ecosol + Flowbox 8010e/Gledhill ASL0085 EHS/3 Navitron 4720AL solar ET panels and Immersun T1060/ T1070/ T1090. 7 Tianwei 235W/ Aurora PVI 3.6kW/ Growatt SP2000 c/w 5kWhr battery and a Renault Zoe
nowty
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« Reply #12 on: June 14, 2018, 08:45:09 AM »

I'm guessing that wind must have been curtailed because it only peaked in the early hours at around 8GW, hardly up from earlier in the evening. Gas bottomed out just under 3.5GW.

Octopus Energy has an Agile tariff which occasionally (like twice per year for a couple of hours) pays the customer to use energy. I wonder if last night was one of those times.

I still reckon we might break a weekday record this afternoon if the sun comes out.
« Last Edit: June 14, 2018, 08:47:51 AM by nowty » Logged

10kW of PV installed and 45+ MWh generated.
Usable battery storage of 50+ kWh.
Heat storage of 25+ kWh.
6kW Ground Source Heatpump.
200,000+ litres of water harvested from underground river.
A few cold frames and raised beds.
dan_b
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« Reply #13 on: June 14, 2018, 08:59:44 AM »

They could have done with the Western Link being up and running at full capacity last night - that was the whole point of that link wasn't it, to reduce/avoid curtailment ?
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3.06kWp SolarEdge system with a split array:
2.18kWp 10x South facing, plus 4x West facing 880W

Mk1 ImmerSUN DHW diverter
4kW PowerVault Battery
dan_b
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« Reply #14 on: June 14, 2018, 09:03:42 AM »

This is frustrating and never noticed this before, but the Crown Estate Asset Map for UK wind doesn't actually include the Scottish windfarms.

http://www.thecrownestate.co.uk/en-gb/our-places/asset-map/#tab-2
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3.06kWp SolarEdge system with a split array:
2.18kWp 10x South facing, plus 4x West facing 880W

Mk1 ImmerSUN DHW diverter
4kW PowerVault Battery
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