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The Electric Power System - Italy-
Italian Power System
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Basic facts Area:302.073 km^2 (source ISTAT) Population:60,783 mln(source ISTAT) Number of electricity consumers: 37 mln (2014) (source AEEGSI)
Number of TSOs:1 Number of DSOs:139(source TERNA) Peak load:approx 54 GW provisional 2015 (source TERNA) Average interruption of electricity: 0,5 min/year (AIT 2014) (source TERNA) Italian Power System
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Global map of the grid and of its interconnections Interconnectors with:
Map
France Austria Switzerland Slovenia Greece Malta
Italian Power System
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Grid facts and characteristics The electricity grid in Italy is divided into transmission grids (380-220150- 132kV voltage) and distribution grids (lower voltage) Voltage Level
Total length (approx.)
Transmission Grid EHV 380 kV
11 000 km *
Transmission Grid EHV 220 kV
11 000 km*
Transmission Grid HV
150-132 kV
46 000 km*
Distribution Grid MV
20 KV 15kV
350 000 km**
Distribution Grid LV
400 V
780 000 km**
*Source Terna
*Only Enel distibution grid; souce Enel D.
Italian Power System
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Structure of electrical power supply TSO
TSO-Grid
Conventional Generation
Bulk-Industry
380 kV
220 kV
132 kV/150 kV Industry
20/10 kV
380 V
Source : Amprion GmbH
DSO-Grid
Utilities
Dispersed Generation
Households
DSO
Italian Power System
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Map of the high voltage grid (380 kV)
Source Terna
Italian Power System
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Map of the high voltage grid (220 kV)
Source Terna
Italian Power System
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Information on TSO(s) Name: Terna Network length (km) approx 63 900 Served area (km²) 302.073 Annual transmitted energy (TWh) 310 (2014) website: http://www.terna.it
Source Terna
Italian Power System
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Cooperation of TSO and DSOs
Italian Power System
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Power structure of the country 2014 [MW] 8.163
Thermo
110
34.284
Hydro Wind
16.396
PV 184 3.443 1.518
14.658
8.409 7.004 26.845
4.519 Source Terna
Italian Power System
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Installed capacity with reference to primary resources Installed capacities (GW), year 2014 Wind
Photovoltaic
Hydro
Thermo
0
10
20
30
40
50
60
70
80 Source Terna
Italian Power System
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Energy production with reference to primary resources Electricity generated (TWh), year 2014 Wind
Photovoltaic Hydro Thermo Others (gas) Thermo Others (solid) Thermo Oil Thermo Gas Thermo Solid
0
10
20
30
40
50
60
70
80
90
100 Source Terna
Italian Power System
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Development of generation capacity since 1991 90.000 80.000 70.000 60.000 50.000
hydro thermo
40.000
geotermal wind & photovoltaic
30.000 20.000 10.000
0 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
[MW]
Source Terna
Italian Power System
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Comsuption per customer groups Power consumption by consumer groups, 2014 2% 22%
42% Agricolture
Industry Terziary Households
34% Source Terna
Italian Power System
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Location of RES (PV &W 2014) 2.067
2 3 21 1.505
0
407 1.715 498 0
Wind 8.703 MW
1.858 9
19 19
1.044
58 91
739 122
Photovoltaic 18.609 MW
456 9 2 693 1.203
231
2.339
2.586
369 167 51 1.250
712 475 359
997 716
1.000
474
1.747 1.295
Source Terna
Italian Power System
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Development of wind and photovoltaic power 26,8
27,3
18,2
18,6
8,1
8,6
8,7
2012
2013
2014
24,5
19,7 Fotovoltaico PV(GW) (GW)
16,4
W(GW) Eolico (GW) 12,8
9,3 6,0
1,6
1,9
1,6
1,9
2,8 0,1 2,7
2005
2006
2007
4,0 0,4 3,5 2008
3,5
1,1 4,9
5,8
2009
2010
6,9
2011
Source Terna
Italian Power System
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RES installed capacity and production since 2005
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60.000
[MW]
50.000
Hydro
40.000
Wind
30.000
PV
20.000
Geo Bio
10.000
tot
0 2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
140.000 120.000 Hydro
100.000
[GWh]
Wind
80.000
PV
60.000
Geo
40.000
Bio
20.000
tot
0 2005
2006
2007
2008
2009
2010
2011
Italian Power System
2012
2013
2014
Source Terna
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Price development for households Average price for electricity for households [cent/kWh] Yearly consumption about 2,700 kWh
Source AEEGSI
18,7 17,3 16,2 15,6
0,6
16,5
16,5
0,6
0,6
0,8
19,1
19,4
0,8
0,8
19,1 0,8
18,9
19,2
0,8
0,8
19,0
19,2
0,8
0,8
19,0
19,0
0,8
0,8
19,3 0,8
18,7
18,5
18,4
0,9
0,9
0,9
7,7
7,4
7,2
0,8
0,6
8,7
2,2
8,9
8,9
2,3
1,5
1,9
I
II
8,8
2,5
2,3
2,3
2,2
2,2
2,4
2,7
III
IV
I
II
Costi di rete e di misura
9,6
9,2
9,5
9,3
9,0
8,6
8,5
8,6
2,5
2,5
2,5
2,6
2,5
2,5
2,5
2,6
2,6
2,6
2,5
2,5
2,5
3,4
3,6
3,6
3,7
4,0
4,1
4,1
4,3
4,4
4,6
3,3
4,4
3,2
III
IV
I
II
III
IV
I
II
III
IV
I
II
III
9,2
2,4
2011
10,2
10,1
10,1
2012
Oneri generali di sistema
2013
Imposte
2014
PED (prezzo energia + dispacciamento) + PPE (perequazione)
Italian Power System
2015
Commercializzazione
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Price development for households Average price for electricity for LV commercial customers [€/MWh] Yearly consumption about 35 MWh/year
Energy
Transmission, distribution and dispatching cost
System cost (including renewables support)
Taxes
Italian Power System
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Price development for households Average price for electricity for MV industrial customers [€/MWh] Yearly consumption about 600 MWh/year
Energy System cost (including renewables support)
Transmission, distribution and dispatching cost Taxes
Italian Power System
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Electricity market organisation Electricity Trading Markets
Counterpart
Description
Day-Ahead Energy Market (MGP)
GME
- The Italian electricity market organization adopted a zonal market; - Clearing market price is defined by the system marginal price given by the intersection of demand and supply curves. The result is a zonal clearing price and the algorithm applies also a national single purchasing price (PUN), which is equal to the average of zonal prices weighted by zonal consumption; - hourly energy blocks are traded for the next day; - Market Participants submit offers/bids where they specify the quantity and the min/max price at which they are willing to sell/purchase; - After the close of the market sitting, supply offers/demand bids are accepted respecting the economic merit order and in such a way as to satisfy transmission limits between zones.
Intraday Market (IM)
GME
- Market participants are allowed to modify the schedules resulting from the Day-Ahead Market by submitting additional demand bids or supply offers; - Supply offers and demand bids are selected under the same criterion as for the Day- Ahead Market.
Dispatching Services Energy Market (MSD)
TERNA
In MSD TERNA procures resources required for managing, operating and controlling the system, in order to: – solve intra-zonal congestions; – create a reserve margin; – balance injections and withdrawals in real time. MSD is divided into two sittings, MSD ex – ante (which takes place the day preceding the day the offers refer) and MB (which takes place in real time). In the MSD accepted offers/bids are valued at the offered price (pay as bid).
Italian Power System
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Power balance in 2014 Generation (TWh) Consuption (TWh) Imports (TWh) Exports (TWh) Losses (TWh)
267 291 47 3 19
Source Terna
Italian Power System
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Energy exchanges in 2014 Physical flows (TWh) Switzerland
Austria
1,5 0,03
24,4 0,8
Slovenia
Import I Export I
5,2 0,2
France 15,5 0,7
0,1 1,3
Greece
Source Terna
Italian Power System
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Energy exchanges in 2014 Commercial flows (TWh) Switzerland
Austria
1,9 0,02
21,9 0,9
Slovenia
Import I Export I
3,9 0,5
France 19,7 0,5
0,2 1,5
Greece
Source Terna
Italian Power System
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Specific aspects of italian electricity market NORD
Market zone Italian market consider 6 internal geografical zone and 4 pole with limited production
CNORD
CSUD FOGN BRNN SUD
SARDEGNA
ROSN
SICILIA
PRGP
Market coupling Pursuant to the AEEGSI resolution no. 45/2015/R/EEL, on the Italian-Slovenian, Italian-French and Italian-Austrian border, interconnection capacities are allocated daily through the mechanism of "market coupling". This mechanism simultaneously performs an implicit allocation of the daily physical rights transmission and the "clearing" of the bids/offers to buy and sell energy.
Italian Power System
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