The Electric Power System - · PDF fileThe Electric Power System - Italy- Country’s flag . ... Italian-French and Italian-Austrian border, interconnection capacities are allocated

Italian Power System 1

The Electric Power System

- Italy-

Country’s flag


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)

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Map

3

Interconnectors with:

France

Austria

Switzerland

Slovenia

Greece

Malta

Global map of the grid and of its interconnections


Grid facts and characteristics

4

The electricity grid in Italy is divided into transmission grids (380-220-150- 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**

*Only Enel distibution grid; souce Enel D. *Source Terna


Structure of electrical power supply

TSO

380 kV

220 kV

132 kV/150 kV

20/10 kV

380 V

Industry

Households

Utilities

TSO

-Gri

d

DSO

-Gri

d

Bulk-Industry

DSO

Dispersed

Generation

Conventional

Generation

Sou

rce

: Am

pri

on

Gm

bH

5


Map of the high voltage grid (380 kV)

6

Source Terna


Map of the high voltage grid (220 kV)

7

Source Terna


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

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Source Terna


Cooperation of TSO and DSOs

9


Power structure of the country 2014 [MW] 10

34.284

16.396

110

8.163

Thermo

Hydro

Wind

PV

14.658 1.518

184 3.443

26.845

4.519

8.409 7.004

Source Terna


Installed capacity with reference to primary resources

Installed capacities (GW), year 2014

11

Source Terna

0 10 20 30 40 50 60 70 80

Thermo

Hydro

Photovoltaic

Wind


Energy production with reference to primary resources

Electricity generated (TWh), year 2014

12

Source Terna

0 10 20 30 40 50 60 70 80 90 100

Thermo Solid

Thermo Gas

Thermo Oil

Thermo Others (solid)

Thermo Others (gas)

Hydro

Photovoltaic

Wind


Development of generation capacity since 1991

13

[MW]

0

10.000

20.000

30.000

40.000

50.000

60.000

70.000

80.000

90.000

19

91

19

92

19

93

19

94

19

95

19

96

19

97

19

98

19

99

20

00

20

01

20

02

20

03

20

04

20

05

20

06

20

07

20

08

20

09

20

10

20

11

20

12

20

13

20

14

hydro

thermo

geotermal

wind & photovoltaic

Source Terna


Comsuption per customer groups

14

Source Terna

2%

42%

34%

22%

Power consumption by consumer groups, 2014

Agricolture

Industry

Terziary

Households


Location of RES (PV &W 2014) 15

58 91

2.339 2.586

475 359 1.250

712

1.000 474

369 167

231

693

1.747 1.295

51

1.203

2 456 9

1.044

122

739

19

1.858

2 407

9

1.715

Wind 8.703 MW

Photovoltaic 18.609 MW

997 716

19

1.505 3 21 0

2.067

0

498

Source Terna


Development of wind and photovoltaic power

16

1,6 1,9 2,7 3,5 4,9 5,8

6,9 8,1 8,6 8,7

0,1 0,4

1,1

3,5

12,8

16,4

18,2 18,6

1,6 1,9 2,8

4,0

6,0

9,3

19,7

24,5

26,8 27,3

2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

Fotovoltaico (GW)

Eolico (GW)

PV(GW) W(GW)

Source Terna


RES installed capacity and production since 2005

17

[MW]

[GWh]

0

20.000

40.000

60.000

80.000

100.000

120.000

140.000

2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

Hydro

Wind

PV

Geo

Bio

tot

Source Terna

0

10.000

20.000

30.000

40.000

50.000

60.000

2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

Hydro

Wind

PV

Geo

Bio

tot


Price development for households 18

Average price for electricity for households [cent/kWh] Yearly consumption about 2,700 kWh

Source AEEGSI

1,5 1,9 2,2 2,2 2,4 2,7 3,2 3,3 3,4 3,6 3,6 3,7 4,0 4,1 4,1 4,3 4,4 4,4 4,62,2

2,3 2,3 2,3 2,42,5

2,5 2,6 2,5 2,5 2,6 2,5 2,6 2,5 2,5 2,6 2,5 2,5 2,5

8,78,9

8,9 8,89,2

10,110,1 10,2 9,6 9,2 9,5 9,3 9,0 8,6 8,5 8,6

7,7 7,4 7,2

0,60,6

0,6 0,60,8

0,80,8 0,8

0,8 0,8 0,8 0,8 0,80,8 0,8

0,8

0,9 0,9 0,9

15,6

16,2 16,5 16,5

17,3

18,719,1 19,4

19,1 18,9 19,219,0 19,2

19,0 19,0 19,3

18,718,5

18,4

I II III IV I II III IV I II III IV I II III IV I II III

2011 2012 2013 2014 2015

Costi di rete e di misura Oneri generali di sistema Imposte PED (prezzo energia + dispacciamento) + PPE (perequazione) Commercializzazione



Average price for electricity for LV commercial customers [€/MWh] Yearly consumption about 35 MWh/year

Energy

System cost (including renewables support) Taxes

Transmission, distribution and dispatching cost



Average price for electricity for MV industrial customers [€/MWh] Yearly consumption about 600 MWh/year

Energy

System cost (including renewables support) Taxes

Transmission, distribution and dispatching cost


Electricity market organisation 21

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).


Power balance in 2014

Generation (TWh) 267

Consuption (TWh) 291

Imports (TWh) 47

Exports (TWh) 3

Losses (TWh) 19

22

Source Terna


Energy exchanges in 2014 Physical flows (TWh)

23

France

Switzerland Austria

Slovenia

Greece

Import I Export I

15,5 0,7

24,4 0,8

1,5 0,03

5,2 0,2

0,1 1,3

Source Terna


Energy exchanges in 2014 Commercial flows (TWh)

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France

Switzerland Austria

Slovenia

Greece

Import I Export I

19,7 0,5

21,9 0,9

1,9 0,02

3,9 0,5

0,2 1,5

Source Terna


Specific aspects of italian electricity market

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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.

Market zone Italian market consider 6 internal geografical zone and 4 pole with limited production

NORD

CNORD

CSUD

SUD

SICILIA

SARDEGNA

FOGN

BRNN

ROSN

PRGP

Documents

The Electric Power System - · PDF fileThe Electric Power System - Italy- Country’s flag . ... Italian-French and Italian-Austrian border, interconnection capacities are allocated