Markets & Operations

Daily Energy Market Offer Data

4 Month Delay

These files contain detail on offers by generators into the PJM Day-Ahead Energy Market. Generator identification is masked to prevent revealing of confidential information, and the masked codes are changed annually. Data is posted on a four-month delay.

For further detail on the fields, consult the Markets Database DictionaryPDF.

Field Descriptions

Description
BIDDATE
Date of data in format YYYYMMDD
UNITCODE
A 19-22 alphanumeric identifier concealing the unit's identity
USEBIDSLOPE
If YES, then the bid curve is a piecewise linear function (MW/BID points are connected by straight lines). If NO, then the bid curve is a step function (points form blocks of MWs at BID prices).
MW1, MW2…….MW10
Ten columns describing the MW portion of a unit's bid curve
BID1, BID2…..BID10
Ten columns describing the $/MW portion of a unit's bid curve
NOLOADCOST
Unit's No-load cost in dollars
COLDSTARTCOST
Unit's Cold Start cost in dollars
INTERSTARTCOST
Unit's Intermediate Start cost in dollars
HOTSTARTCOST
Unit's Host Start cost in dollars
MAXDAILYSTARTS
Unit's daily maximum starts (number)
MINRUNTIME
Unit's minimum run time in hours
MAX_ECOMAX
The highest Economic Maximum value for the day for the unit.
AVG_ECOMAX
The average Economic Maximum value for the day for the unit.
MIN_ECOMAX
The lowest Economic Maximum value for the day for the unit.
MAX_ECOMIN
The highest Economic Minimum value for the day for the unit.
AVG_ECOMIN
The average Economic Minimum value for the day for the unit.
MIN_ECOMIN
The lowest Economic Minimum value for the day for the unit.
MODIFIEDDATE
Timestamp of generated data