Download Procedure for Scheduling of Collective Transactions Through Power

Open Access
Open Access in ISTS:
CERC OA Regulations 2008
• Collective transactions : Both Buyers and Sellers of to
bear transmission charges and absorb transmission
losses
• Inter-Regional links -No Separate treatment.
• Emphasis on “Scheduling” rather than “Reservation”
• SLDC consent mandated along with application
• In case of Congestion for Advance Reservation, eBidding without Price Cap
• Exit Option provided with payment of up to 2 days open
access charges.
Open Access in ISTS
CERC OA Regulations 2008
• Products –
Short term Access
- Advance
- First Come First Serve
- Day ahead
- Contingency
Time lines for various Categories of Applications
Sl.
No.
Type of Application
Deadline for applying
Advance
Application
1
2
3
4
First Come First
Serve
Day Ahead
Contingency
OA
required
for *
Deadline for issue
of approval by
Nodal RLDC
10 days prior to close of
Month-1
M2
25th of M1
5days close of Month-1
M3
Last day of M1
Last day of Month-1
M4
5th of M2
FCFS for the same
month
M1
3 days before start
of transaction
M2
28th of M1
D4
On D3After receipt
of Power Exchange
schedules for D-4
D4
Within 6 blocks
before start of OA
FCFS 4 days before
commencement
Day Ahead (Day-1 or
1500 hrs. of Day-3)
After 15hrs on Day-3 or
1.5 hours before start of
OA
* M-1 : Month-1 (Current month), M-2- Next month and so on, D-1 Day-1 and so on
Time Line for Advance, FCFS, DA and
Contingency Applications
D-3
D-2
D-1 D0
1500hrs 1.5hrs
Deadline for
submission of
DA Applications
for transactions
on D0
Deadline for
submission of
Contingency
Applications for
transactions
during D0
M1
M2
20
Last Day for
submission of
Applications for
transactions in
M2, M3, M4
25
M3
M4
5
Processing time
for RLDCs
Processing of Advance Applications for next 3 months
10/5/1 day (17.30hrs)
prior in a month for
2nd/3rd/4th month
Dead Line for Receipt of Application
Request for Consent from other RLDCs Next Day to due date(12.00hrs)
SAME DAY 20.00HRS
Issue of Consent by RLDC
WITHIN 5 DAYSNo
Approval
Next day 12.00hrs
Yes
Check for any Tr.
Congestion ?
No
Still Tr.
Congestion ?
Request
Applicant for a
revised Tr. Cap.
Next day
12.00hrs
Next day
Revised MW/Duration11.00hrs
by Applicant
Yes
4th day after due date
WITHIN 5 DAYS
E-bidding
Approval
3 working days after issue.
CommencePayment of
ment
STOA ch.
of Tx.
Processing of FCFS Applications for next month
Dead Line for Receipt of Application
5/4 day (17.30hrs)
prior in a month for
Request for Consent from other RLDCs Next Day to due date(12.00hrs)
Issue of Consent by RLDC
Approve
Applcations
received
in a day on
pro-rata
No
SAME DAY 20.00HRS
Next day 12.00hrs
Yes
Check margin is there ?
WITHIN 5 DAYS
No
Yes
Any margin left ?
4th day after due date
3 working days after issue.
CommenceApprove Applications
Payment of
ment
Received in next day on pro-rata
STOA ch.
of Tx.
REVISON OF SCHEDULE
• Only in case of “Advance Scheduling” or
“First-Cum-First Served basis”
• minimum five (2) days notice (5days in 2008 Regn)
• Transmission Charges and Operating
Charges for 2 days (5days in 2008 Regn)
• Margin Available – could be utilized for
scheduling of other Open Access
Transactions
CURTAILMENT IN CASE OF
TRANSMISSION CONSTRAINTS
• Allocation/Reallocation of ISGS power
• Transmission constraint or to maintain grid security
• curtailed in the manner, which in the opinion of
RLDC, would relieve transmission constraints/
enhance grid security
• Open Access Bilateral Transactions would generally
be curtailed first followed by the Collective
Transactions
• Rerouting allowed without curtailment
• refund of Transmission Charges for unused capacity
COMMERCIAL CONDITIONS
• All Payment related to Open Access ST Charges
– by Applicant to the Nodal RLDC
– within three working days from the date of acceptance
• Energy charges to be settled among the parties
• Losses adjusted in kind
• Application Fees (as per Para 7 of Regulation)
– non-refundable fee of Rupees five thousand (Rs.5000/-) only
• Transmission charges (Para 16 of Regulation)
– Intra-region (Rs.80/MWh)
– Adjacent Region (Rs. 160/MWh)
– Wheeling (Rs.240/MWh)
– STU charges – as specified by respective SERCs or Rs. 80/MWh
• Operating charges (as per Para 17 of Regulation)
– Rs. 2000/- per day each RLDCs/SLDCs involved
DISBURSAL OF PAYMENT
• Disburse the Open Access Charges
– 10th day of the next month
• Transmission Charges and Operating
Charges – for State System
– Concerned STUs/SLDCs
• Refund due to curtailment
– 15th day of the next month
• Reconcile the Open Access Charges
STOA – SUCCESS STORY
• Developed in consultation with all stakeholders
• Applications Processed (Since Beginning) > 60,000 No.
• Volume (Approved Energy) (Since Beginning) > 190BUs
• Applications Approved > 95 %
– Refusal/Non-consent by SLDCs > 3 - 4 %
– Refusal due to system constraints < 0.5 %
STOA – SUCCESS STORY
• Robust Financial Settlement System
• Near Dispute free implementation
• Logistics/infrastructure -In-house
• Confidence Building & Dissemination of
knowledge
ST charges under OA
• w.e.f 01.04.11, ST charges as per Point of
Connection charge
• Both seller and buyer to bear losses in kind
as per the applicable Zonal losses