Reload PFVSeptember 12, 2012

Reload PFV Concern that need to be addressed:

The RC need to have an option in PFV to allow gradual reload of markets and non markets during TLR level 3 , 4 or 5 events.

Without the option of a gradual reload in PFV, a reload situation without capping the net impact of markets and non markets could cause an unexpected sudden increase of the real time loading of the flow gate above the SOL that was not anticipated by the RC and could not have been anticipated by the RC.

The RC doesn’t know how much economic dispatch potential of markets and non-markets was temporary re-dispatched during a TLR level 3, 4 or 5 event to resolve the congestion and maintain the flow gate loading below limit.

Current hour Next hour

GTLReal time

TLR in effective several hours

TLR 3A re-issuedor TLR 5A

GTLNext hour

TAGSImpact

CH100%reload

Other

SOLFlow gate

Othervalue CH

TAGSImpact100%reload

Real timeMW totalflow Flow gate

ForecastedFlow Next hour

PotentialGTL

impact

Potential economic dispatch of markets and non-markets that was temporary re-dispatched to resolve the congestion.Unknown to the RC how much

Calculation for next hour

CONCERN

MW

Current hour Next hour

GTLReal time

TLR in effective several hours

TLR 3A re-issued

GTLNext hour

TAGSImpact

CH100%reload

Other

SOLFlow gate

OtherValue CH

TAGSImpact100%reload

Real timeMW totalflow Flow gate

ForecastedFlow Next hour

PotentialGTL

impact

Calculation for next hour

PFV allows RCto set a max flowTarget for reload.

Net GTL TargetMarket / Non Market

SOLUTION

MW

Reload PFV

Solution PFV software allows the RC to set a max flow Target for a reload

situation. (see example previous slide) In that situation the Markets and Non-Markets will still get a net GTL

Target that is higher than their current hour net GTL impact. The Target will be based on their current impacts calculated from real time plus a calculated reload value.

The reload value will be allocated to the GTL of Markets and non-Markets based on their >5% FWD impact. For TLR level 3 based on the Non Firm >5% FWD GTL impacts and for TLR Level 5 based on all >5% FWD GTL impacts.

Full reload without Targets for Markets and Non Markets will only occur if a TLR level 1 or 0 is issued.