Market Sell Unit

Units:	~
Mode:	Input Only
Multi-band:	False
Default Value:	0
Validation Rule:	Any Value
Key Property:	No
Description:	Size of block for sales (time independent)
Detail:

In the absence of the Sell Unit property, sales into the market are assumed to take any continuous value (zero up to the Max Sales), and the amount sold in any trading period is independent of other periods. Sell Unit however sets the increment (size of the block) that must be sold into the market. Further, each contiguous block in time represents a single decision variable in the optimization. Thus Sell Unit is used to represent sales of blocks of the product that must be committed to over a set period of time.

Note that Sell Unit only sets the block size, you must still set Price and Quantity to define the market demand/supply function.

Example:

Market	Property	Value	Units	Band	Timeslice
Forward PEAK	Sell Unit	100	-	1	PEAK
Forward PEAK	Buy Unit	100	-	1	PEAK
Forward OFF-PEAK	Sell Unit	100	-	1	OFF-PEAK
Forward OFF-PEAK	Buy Unit	100	-	1	OFF-PEAK

These would go with the Timeslices properties:

Timeslice	Property	Value	Units	Pattern
1x16	Include	-1	-	W2-6,H7-22
WRAP	Includes	-1	-	W2-6,H1-6,23-24;W1,7

Together these properties dictate that sales to the market must be made in 100MW blocks spanning either "1x16" (peak) or "WRAP" (off-peak) periods. PLEXOS will optimize sales into the market taking into account the integer nature of the block size and the duration of the blocks.