These transactions are scheduled directly between a generator and a load, that is, bilateral - between two parties. All bilateral bids offered within NY are also automatically scheduled by NYISO. This is energy brought into New York from neighboring control areas, which include PJM Interconnection, ISO New England, Hydro Quebec and IMO (Ontario). The amount scheduled is determined by price, thus not all that is bid gets scheduled.Energy flowing out of New York to the neighboring control areas. Again price determines how much energy is actually scheduled for export.This is the sum of energy imports less exports. Wheel throughs have no impact on this calculation as their flow in and out nets to zero.The amount of energy purchased in one control area and delivered to another control area, that is, just wheeling through New York.All generating units in New York must submit bids in order to be considered by NYISO. Units are scheduled based on economics and the need to maintain reliable system operation.  This is a summary of gross imports, gross exports and net imports displayed by external control area.
Balancing Market Advisory Summary
Date: 09/19/2013

Offered MWh Scheduled MWh Percent
Bilateral Bids 2400 2400

Generation Bids 526452 351131 66.7%

Imports 85099 82734 97.2%
Exports 11399 9581 84.1%

Net Imports/(Exports) 73700 73153 99.3%
Gross Imports/Exports Summary
Wheel Throughs 4458 4458 100.0%