Unthreaded
STOR has six seasons per year. Year 9 season 1 started on 1st April 2015.
The time period and the maximum/minimum price per MWh agreed is as follows:
9.1 01/04/15 to 27/04/15 £350/£70
9.2 27/04/15 to 24/08/15 £275/£70
9.3 24/08/15 to 21/09/15 £220/£76.87
9.4 21/09/15 to 26/10/15 £220/£76.99
9.5 26/10/15 to 01/02/16 £160/£67.77
9.6 01/02/16 to 01/04/16 £145/£67.77
10.1 01/04/16 to 25/04/16 £235/£72.75
10.2 25/04/16 to 22/08/16 £235/£72.75
10.3 22/08/16 to 19/09/16 £235/£72.75
10.4 19/09/16 to 31/10/16 £235/£72.75
10.5 31/10/16 to 30/01/17 £235/£69.00
10.6 30/01/17 to 01/04/17 £235/£69.00
TerryS
It looks like it's subsidies for everyone, including gas driven power plants, but still brownouts loom:
Blow to UK energy plans as new gas plant in doubt
Exclusive: Developers of gas-fired plant that could power 2.2 million homes admit project is behind schedule and yet to secure investors
"Mr Benson [the business development director of Carlton Power, the energy firm that was awarded a subsidy contract by the Department of Energy and Climate Change last year to build a new 1.9 GW gas driven power plant at Trafford in Greater Manchester] said long-term political intervention through "continuing direct subsidies for low carbon technologies such as wind, nuclear and solar" skewed the wholesale power market, making the price artificially low and making it harder to invest in gas plants."
http://www.telegraph.co.uk/news/earth/energy/11925444/UK-energy-crisis-Trafford-gas-plant-in-doubt.html
Robert Christopher
http://www2.nationalgrid.com/UK/Services/Balancing-services/Reserve-services/Short-Term-Operating-Reserve/Short-Term-Operating-Reserve-Information/
TerryS
STOR:
OCGT 44%
Pump Storage: 9%
Bio Diesel <1%
Biomass 1%
CCGT 7%
CHP 3%
Diesel 22%
Gas Reciprocating engine 3%
Hydro 4%
Load reduction 7%
TerryS
NG says it "dispatches STOR 5 days out of seven". If true, this suggests that we are a lot closer to the edge than is generally admitted.
Does anyone know what the contractors get paid? How generous is their FIT, I wonder..?
jamesp
@RR "tautology" I don't agree.
To me that says
#1 3MW cos we are not going to mess around with very small outfits
#2 The full supply must be available not on instant demand, but rather we'll give you 4 hours.
200KVA generators sell for £7,000 on Ebay or new on Alibaba for about £11,000
For 3MW you need 15 sets so @ £100K to £165K to get you in biz
stewgreen
"Demand Side Reduction (DSR) is part of STOR"
Philip, so I would guess that means large electricity consumers leaving the UK could actually mean a decrease in available STOR, making the rest of the system more vulnerable? Some of them may have had their own on site generation, but would that have regarded as part of the generating capacity of STOR anyway?
michael hart
One has to be suspicious of anyone who uses tautology like this:
Offer a minimum of 3MW or more…and:
Deliver full MW within 240 minutes or less...
Radical Rodent
There is a lot of conflicting information about what exactly STOR is, but from National Grid:
Short Term Operating Reserve is needed because at certain times of the day National Grid needs reserve power in the form of either generation or demand reduction to be able to deal with actual demand being greater than forecast demand and/or plant unavailability. Where it is economic to do so, National Grid will procure part of this requirement ahead of time through STOR.Generally STOR is used following plant breakdown:
A STOR provider must be able to:
Offer a minimum of 3MW or more of generation or steady demand reduction (this can be from more than one site);
Deliver full MW within 240 minutes or less from receiving instructions from National Grid; and
Provide full MW for at least 2 hours when instructed.
According to DECC/Ofgem (Statutory Security of Supply Report 2014), Demand Side Reduction (DSR) is part of STOR:
NG currently utilise DSR as part of its role as residual balancer of the electricity transmission system – fine tuning the balance between the demand and generation of electricity in real time. NG contracts power sources, including DSR, for balancing the system through its Short Term Operating Reserve (STOR), among other balancing services. NG typically has around 3GW of STOR contracted, and dispatches STOR 5 days out of seven.also from DECC/Ofgem:
To provide a snapshot of the types of providers participating in STOR, from mid-August to mid-September 2013, 1.35GW of ‘non-Balancing Mechanism’ (non-BM) providers were contracted in STOR – this broadly equates to DSR provision (a further 1.75GW of STOR coming from larger generators).13 Of the 1.35 GW of DSR in STOR, around 135MW (10%) was actual ‘load reduction/turn-down’ – meaning organisations reducing the amount of electricity they take from the grid – for example, by turning off refrigeration or air conditioning units for a short period of time. The remainder of the 1.35GW was made up of smaller ‘on-site’ generators – including diesel, gas, hydro, combined heat and power (CHP) and biomass.
No break-down of the types of the ‘on-site’ generators is given.
Phillip Bratby
Robert Christopher: But don't worry, as ever DECC is on top of the situation and has it all in hand.
Isn't it good to know we have an energy guarantee?