1. Congestion Management on the Italian border for the year 2005
European Electricity Regulatory Mini-Forum on congestion management
Milan, 25th January 2005

2. NTC on the Northern Italian Border [MW] - year 2005
NTC values assessed by a Technical Task Force (TTF) and approved by a Steering Committee composed by all the TSOs involved
Definition of ‘balanced’ and ‘unbalanced’ NTC values
Definition of a procedure to be applied in case of security problems and/or changes of NTC values
Possibility to review NTC values during the year according to TTF analisys and operation results
(1) New S.Fiorano-Robbia line in operation

3. Congestion management on the Italian border - year 2005
NTC Capacity managed by GRTN:
Congestions on the Italian electrical border are solved in the day ahead market: selling bids and bilateral transactions are referred to the Italian virtual zones
NTC capacity assigned by neighbouring TSOs:
Assignees can offer in the day ahead market or schedule bilateral transactions (North zone)

4. Congestion management on the Italian border - year 2005
Congestion problems on the Italian electrical border are solved in the Day Ahead Market through implicit auctions referred to each virtual zone for the capacity managed by GRTN :
selling bids
bilateral transactions
€/MWh
Pool transactions
Virtual Zone
Pvirt z X
MWh
Bilateral transactions
Selling Bids
Bids/Bilateral transactions through capacity assigned by CH TSOS
Bids/Bilateral transactions through capacity assigned by RTE
Implicit Auction
Implicit Auction
F VIRTUAL ZONE
CH VIRTUAL ZONE
NORTH ZONE
(North-West border)

5. Congestion on the border Bilateral transactions
Congestion management on the Italian border - year 2005
Pool transactions
Virtual zone
Pvirt
North zone PN
PPUN Qi TL
Virtual Zone
€/MWh
Qi > TL
Value of CCC rights
PPUN
Pvirt
Value of CCCI rights PN X
Pvirt
MWh
(PN – Pvirt)
Congestion on the border
(PPUN – PN)
Congestion in Italy
Bilateral transactions
Selling Bids TL
PPUN = Italian national price (Buy)
PN = North zone price
Pvirt = Virtual zone price

6. Balancing (real time market)
Day (n-1)
Day (n)
10:30 AM
2:30 PM
9 PM
0:0
12 PM
Energy
Energy
Services
Services
Day ahead market (MGP)
Adjustment
Market (MA)
Dispatching services market (MSD)
Real time balancing session
System Marginal Price
System Marginal Price
Pay as bid
Pay as bid
MSD highlights
Only one set of offers (Buy/sell) used for both day ahead and real time sessions
Qualified power units only
GRTN as unique counterpart
Reserve
Voltage adjustament
Intra-zone congestion management
Balancing
Unplanned adjustaments:
Outages
Real time countermeasures