The future for DHC in Brescia and Milano

The future for DHCin Brescia and Milano

Venice, 26.05.2009

Lorenzo SpadoniA2A Spa - Italy

This information was prepared by A2A and it is not to be relied on by any 3rd party without A2A’s prior written consent. 2

A2A - OVERVIEW

1st Italianplayer

1st Italianplayer

2nd EE player3rd gas player

1st utility forclients andturnover


A2A – FIGURES YEAR 2008

REVENUES: 6,1 billion Euro

EBITDA: 1,1 billion Euro

NET INCOME: 0,3 billion Euro

ELECTRIC INSTALLED POWER: 3,7 GW

ELECTRICITY SALES: 26,5 billion kWh

ELECTRICITY DISTRIBUITED: 12,2 billion kWh

GAS SALES: 5,2 billion m3

GAS DISTRIBUITED: 1,9 billion m3

DH HEAT SALES: 1,9 billion kWh

WASTE TREATED/DISPOSED: 2,9 million tons


• Brescia DH system: today situation

• Brescia DH system: future developments

• Brescia DC system

• Milan DH system: today situation

• Milan DH system: future developments

Agenda


39,4 Mm3 heated volume

606 km of double pipe

18.889 connected buildings

130.000 inhabitants supplied

695 MWt of installed power

1 km

C.le Nord

C.le Lamarmora

Termoutilizzatore

BRESCIA DISTRICT HEATING – EXISTING SITUATION


BRESCIA DISTRICT HEATING – ANNUAL GROWTH

02468

10121416182022242628303234363840

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YEAR

HE

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10

^6

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)


BRESCIA DISTRICT HEATING

THERMAL POWER AVALIABLE FOR DISTRICT HEATING(2008)

Year of P thermal P electric cogenerated Fuelconstruction (MW) (MW)

Lamarmora 359Unit 1 1978 84 31 Natural Gas/Fuel Oil

Unit 2 1981 87 33 Natural Gas/Fuel Oil

Unit 3 1987 130 75 Coal/Natural Gas/Fuel Oil

Boiler Macchi 3 1977 58 - Natural Gas

Termoutilizzatore 1998 160 84 Waste

North Plant

Boiler Fochi 90 - Natural Gas

Boiler Bono 12 - Natural Gas

New boiler Bono 59 - Natural Gas

Other plants 15

TOT 695 223


0200400600800

1.0001.2001.4001.6001.8002.0002.2002.4002.6002.8003.0003.2003.4003.6003.8004.000

GW

h

1972

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ANNI

COMBUSTIBILI IMPIEGATI


• natural gas

• oil

• coal

• municipal waste and biomass

FUEL USED INBRESCIA DISCTRICT HEATING PLANTS



2008 OPERATIONAL DATA

Heat supplied by district heating:at customer boundaries: 1.053 GWhtat power plant boundaries: 1.292 GWht

Cogenerated electricity: 857 GWhe

Maximum heat produced(5 gennaio 2009): 560 MWt

PRF = 0,2 According to UNI EN 15316-4-5 May 2008and prEn 15603 final draft August 2007


TERMOUTILIZZATORE(the waste to energy plant of Brescia )


TERMOUTILIZZATORE BRESCIA2006 "Industry award"

WTERT - Columbia University - New York


OPERATIONS DATA 2008:

Treated waste( of which biomass 274.000 tons )

Electricity production (net)

District heating

Fossil fuels saving (Tons of Oil Equivalent)

CO2 avoided emissions

801.000 tons

570 Gwhel

568 Gwhth

> 150.000 TOE

> 400.000 tons

TERMOUTILIZZATORE(The waste to energy plant of Brescia)


STACK EMISSIONSmg/Nm3

(excepted TCDD in ng/Nm3)dry, 11% O2

AUTORIZZ.REGIONALE

1993

DESIGN DATA

1994

EUROPEANDIRECTIVE2000/76/CE

(recepit in Italyin 2005)

ACTUALOPERATIONAL

DATA(typical)

Dust 10 3 10 <0,5SO2 150 40 50 10NOx 200 100 200 80HCl 30 20 10 4HF 1 1 1 0,1CO 100 40 50 15Heavy metals 2 0,5 0,5 0,01Cd 0,1 0,02 0,05 0,002Hg 0,1 0,02 0,05 0,002IPA 0,05 0,01 0,01 <0,001TCDD Teq ng/Nm3 0,1 0,1 0,1 <0,005








Agenda


BRESCIA DISTRICT HEATING FUTURE developmentS- SCENARIO 2020 -

HEATED VOLUME: 45 Mm3

MAXIMUM PEAK OF HEAT REQUIRED: 720 MWt

ANNUAL THERMAL ENERGY REQUIRED: 1.791 GWht

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VOLU

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TA 1

0̂6

m3


BRESCIA DH : FUTURE developmentS

IMPROVEMENT OF GENERATION SYSTEM

IMPROVEMENT OF NOX CONTROL:

• WTE PLANT: HIGH DUST SCR• LAMARMORA COAL BOILER: DENOX SCR


Brescia DH: developments in generation system

Repowering of Termoutilizzatore•new steam turbine•replacements of heating surfaces on boiler 1 and 2•substitution of the fabric filters

High efficiency solutions for Lamarmora plant underevaluation.


IMPLEMENTED NOx CONTROL IN BRESCIA WTE(since 1998)

• PRIMARY\

- low combustion excess air- 30 compartment grate- infrared camera foroptimization of air supply

- flue gas recirculation

• SECONDARY (NOx reduction)

- SNCR (NH3 injection with 27 nozzles, positioned atthree levels)

Brescia DH developments: NOx Reduction

This information was prepared by A2A and it is not to be relied on by any 3rd party without A2A’s prior written consent. 19HIGH DUST SCR LOCATION

HIGH DUST SCR



• installation: 2005 Sep. – 2006 Feb.

• operation: started 2006 Mar. (1st phase – one cat. layer)

• inspection: Sep. 2006 (cleaning and catalyst analysisshowing some pore plugging and catalystpoisoning with sulphates)

• 2nd phase: started 2006 Oct. after inspection (2 cat. layer)

• inspections: 2007 Apr. and Sep. (only cleaning)2008 Apr. (erosion starts to become evident)

November: removal of one layer and installation of a new layerwith modified geometry

High Dust SCR - HighlightsBrescia DH developments: NOx Reduction


2 SCR LAYER (24 months operation):

• NOx: 80 à 60 mg/Nm3

• NH3 slip: 12 à 1 - 4 mg/Nm3

• NH3 consumption: 0.22 à 0.20 m3/h (25% concentrated)

• PRESSURE LOSS: < 2 m bar

SCR “HIGH DUST”2nd PHASE TEST RESULTS (preliminary)



NOx – NH3 consumption – ammonia slipHIGH DUST SCR RESULTS

NOx- NH3 emissions

0

10

20

30

40

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60

70

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90

1/1/06 1/5/06 29/8/06 27/12/06 26/4/07 24/8/07 22/12/07 20/4/08 18/8/08

NO

x - N

H3 s

tack

em

issi

ons

[mg/

Nm

³]

0

100

200

300

400

500

600

NH3 c

onsu

mpt

ion

[l/h]

NOx

NH3slipNH3cons.

74

12

4,4

8

1,3 1,83,7

SCR operation start(1 layer)

Start with2nd layer

217

2,5

70

44

33

53

66

61

67

58

69

179

166

184186

219200

44,9


CATALYST AFTER 2 YEARS OF OPERATION


Before Cleaning

After Cleaning


SCR HIGH DUST ON THE COAL BOILER OF LAMARMORA PLANT

EXPECTED NOx EMISSION AFTER DENOX INSTALLATION: < 150 mg/Nm3

• BOILER THERMAL POWER: 200 MW

• FLUE GAS FLOW: 230 KNm3/h

• NOX EMISSION: 500 mg/Nm3








Agenda


COOL WATER PLANT:

- Cooling power installed 19,2 MWch

- Nr unit installed 6 unità

- Technology Centrifugal Chiller Electric withinverter, cooled by water

- Pumping system One stage with variable mass flow

- Aux. cooling system Evaporative tower

- Running period 12 months/year; 24hours/day

- COPchiller yearly average 6,76

- COPplant yearly average 4,49

Network

- Lenght of double pipe 4,8 km

- Customer Hospital, University, Office

- Cooled volume 575.000 m3

- Yearly cooling energy 24,6 GWh/anno

Note: data refered to 2008

Universitydistrictcooling

Hospitaldistrictcooling

COOL WATERPLANT

DISTRICT COOLING SYSTEM – BRESCIA NORTH


COOLING PLANT “BRESCIA NORTH”

District CoolingPumps

Auxiliary pumps(for evaporativetower)

ChillerAuxiliary coolingsystem







Agenda


MILANO DISTRICT HEATING – EXISTING SITUATION


MILANO DISTRICT HEATING

2008 DATA

Connected thermal power: 360 MW

Inhabitants: 183.000

Heated volume: 17,4 Mm3

Heat sold: 514 GWh







Agenda


MILANO DISTRICT HEATING – FUTURE DEVELOPMENT

HE

AT

ED

PO

WE

R

year



INH

AB

ITA

NT

S C

ON

NE

CT

ED

year



NE

TW

OR

K d

eve

lop

men

t

year





HEAT PUMP PLANT



NOX EMISSION AVOIDED

ton

s/ye

ar

year



CO2 EMISSION AVOIDED

ton

s/ye

ar

year

Documents

The future for DHC in Brescia and Milano