Toby,
The availability of building side resources and their interaction with each other should be managed at the building controls and energy information systems. The best the the grid can hope for is the resource name, resource availability schedule (forecast) and $ value for the resource.
Here is how I see a building providing this information (just a simple example):
HE01 - No resource
.
.
HE12 - No resource
HE13 - at p =$x/kWh, B is available, at $y/kWh A&B, at $z/kWh A&C, ..., at $t/kWh E
HE14 - at p =$x/kWh, B is available, at $y/kWh A&B, at $z/kWh A&C, ..., at $t/kWh E
.
.
HE24 - at p<= $n/kWh, F is available (F is storage)
There will be times of day and months or seasons in a year, that there may be no resources available or that different resources may be available. Resource availability information can easily be extracted from an EMCS (or perhaps a combination of EMCS and EIS).
While we concentrate price being presented as an absolute number, at this point, price is represented in many different ways (absolute or relative (tiers, levels, etc)) and the threshold representation may change depending on the way price is represented.
Sila
We have discussed DR responses as market offerings
We have discussed DR acquisition as contract execution, whether in advance, perhaps under a program, or at the moment the contract performance is called.
We have discussed each DR event as a call for contract performance
In each of these, there is the possibility that one contract excludes performance of another.
Simple scenario:
My building uses 1 MWH of electricity
I can turn off the lights for 100 kWH of DR (a)
I can provide 3 levels of lessened HVAC for 150, 350, 500 KWH DR each. (b, c, d)
I can turn off the entire building for 1 MWH of DR (e)
Each of these may be priced with a different price / kWH.
A, B, C, D can be purchased separately.
AB, AC, and AD can be purchased as at the same time.
One cannot buy BC, BD, or CD – these responses are exclusive of each other.
If one Buys E, all other responses are off the market, even if they were already executed.
Each of these Offerings may have their own incompatible requirements.
A may only be available between Dawn and Dusk
E may require 48 hours’ notice to handle tenant relations or HR Policies.
D requires 24 hours’ notice to declare an “Informal Office Day”. Informal Office days need management approval.
B, C can be performed on 15 minutes’ notice.
These offerings, A-E, a suite of related offerings of DR made by a single end node. For simplicity, I have limited this to shedding; it is not hard to complicate matters with DER.
Suggestions please, especially suggestions that map these concepts to financial or commodities markets…
tc
"Energy and persistence conquer all things." -- Benjamin Franklin