Coffee Coffee Coffee, Coffee, ConversationConversation

and CHPand CHPPresented by:

Mike ButerOperations Manager

PRESENTATION OUTLINEPRESENTATION OUTLINEAPS Energy Services Company, Inc.Traditional Energy SystemsAlternative Energy SystemsPros and ConsProject Review

APS ENERGY SERVICESAPS ENERGY SERVICESConsolidated Assets of $11.5 Billion

Annual Revenues of $3.4 BillionConsolidated Assets of $11.5 Billion

Annual Revenues of $3.4 Billion

Energy Services: Customized energy solutions that improve the quality and efficiency of a facility while maintaining efficiency of a facility while maintaining desired aesthetics (e.g. lighting and HVAC)

Renewable Technologies: Renewable energy alternatives designed provide

Energy Efficiency, Commodity and District Energy Customers

energy alternatives designed provide sustainability to campus settings.

Build, Own, Operate and Maintain:Energy Systems such as cogeneration, photovoltaic and biomass plants.

District Energy: The design, construction, Major Cities

gy g , ,operation, production and distribution of district energy, providing alternative life-cycle economics for individual buildings. Licensed General Contractors, AZ, CA, NM, NVLicensed General Contractors, AZ, CA, NM, NV

APS ENERGY SERVICES’ PLANT NETWORKAPS ENERGY SERVICES’ PLANT NETWORK

Chase FieldDowntown Phoenix

Phoenix Convention CenterPhoenix Convention Center

Ch Fi ldCh Fi ld

3,000 Tons (12,000 Tons at build-out)20,000 T-Hr Ice (60,000 T-Hr Ice at build-out

Sierra PineMartel, CA

Tucson District Energy

Tucson Convention Ctr.

(cogen plant)

Phoenix

Midtown Tucson

Police - Fire

Chase FieldChase Field(Home of the Arizona (Home of the Arizona

Diamondback’s)Diamondback’s)

Arizona State University CHPArizona State University CHP

13,200 Tons (15,200 Tons at build-out)36,000 T-Hr Ice

10 000 Tons (18 000 Tons at build out) CENTRAL CENTRAL OPERATIONS CENTEROPERATIONS CENTER

Downtown Phoenix24/7

Arizona State University

Downtown Phoenix

Sierra PineSierra Pine

10,000 Tons (18,000 Tons at build-out)8 MW (16 MW at build-out)80,000 pph (160,000 pph at build-out)

4 MW

Northwind Phoenix Ice

Plant #1Ch Fi ld

University Tempe

Campus CHP

Phoenix Convention

Center

Tucson Convention CenterTucson Convention Center

4 MW40,000 pph

4,000 Tons (8,000 tons at build-out)1 6 MW Chase Field

Arizona State University

PolytechnicCampusMidtown Tucson Police Midtown Tucson Police -- FireFire

1.6 MW40 mmBtu/hr

150 Tons10 mmBtu/hr10 mmBtu/hr

TRADITIONAL v. ALTERNATIVE ENERGY SYSTEMSTRADITIONAL v. ALTERNATIVE ENERGY SYSTEMS

Electric Utility Electricity TRADITIONAL ENERGY SYSTEMSTRADITIONAL ENERGY SYSTEMS

Cogeneration (Combined ALTERNATIVE ENERGY SYSTEMSALTERNATIVE ENERGY SYSTEMS

(Grid Power)Electric Chillers

St /H t W t B il

Heat & Power)Absorption Chillers

W t H t R B ilSteam/Hot Water Boilers Waste Heat Recovery Boiler

Photovoltaics (Solar)

GRID POWER v. COGENERATION: PROS & CONSGRID POWER v. COGENERATION: PROS & CONS

ProsGRID POWERGRID POWER

ProsCOGENERATIONCOGENERATION

Typically Reliable EnoughIt IS NIMBYCapital Responsibility by

More Reliable with GridBacks-Up to Grid PowerHigh EfficiencyCapital, Responsibility by

OthersNo Long-Term Commitment

C

High EfficiencyReduced EmissionsLower Carbon Footprint

ConsGrid not Backed UpLess Efficient

ConsCapital InvestmentOn-Site

Greater EmissionsReliability Impacted by Others on Grid

O&M ResponsibilityLong-Term CommitmentFuel Price Fluctuations

GRID POWER v.COGENERATIONGRID POWER v.COGENERATIONWhy is a Cogeneration Plant More Efficient than a Typical Power Plant?

Location and High Grade Heat• Imagine Using Your Car Radiator to Heat Your Home… That’s Cogeneration!g g g

NONNON--COGENERATIONCOGENERATION COGENERATIONCOGENERATIONSteam27%

Waste26%

Steam44%

Waste55%

Electricity18% Electricity

30%

45% of Fuel is Used

30%

74% of Fuel is Used

GRID POWER v. COGENERATIONGRID POWER v. COGENERATIONANNUAL WATER CONSUMPTIONANNUAL WATER CONSUMPTION

(millions of gallons)(millions of gallons)Assumes 0 5 gal/kWh Utility Water Usage 6 2 MWs and 96% Load Factor

30

Assumes 0.5 gal/kWh Utility Water Usage, 6.2 MWs and 96% Load Factor

20

25

10

15

0

5

Non Cogeneration Cogeneration*Non-Cogeneration Cogeneration**Arizona State University

ALTERNATIVE ENERGY PROJECTSALTERNATIVE ENERGY PROJECTSSierra Pine - CA

4.5MW Cogeneration Plant

COGENERATIONCOGENERATION

City of Rohnert Park, CA30kW S t

SOLARSOLAR GREEN CREDITSGREEN CREDITSUC/CSU

17MW

30kW System

City of Flagstaff, AZ15kW S t

Northern Nevada Correctional Center1,000kW Electric Generation

(additional future 30kW solar)

BIOMASSBIOMASS

COMBINED HEAT & POWERCOMBINED HEAT & POWER

15kW System

Arizona State UniversityArizona State University

16MW Plant Construction and 20-Year Operations

COMBINED HEAT & POWERCOMBINED HEAT & POWER Arizona State University30kW System

Yavapai Apache Nation

White Pine County School DistrictLow Pressure Steam at 3MMBtu/Year

Yavapai-Apache Nation30kW System

Hualapai Indian Nation (in progress)( p g )

Future 33kW System

PROJECT: PROJECT: PROJECT: PROJECT: CITY OF TUCSON CITY OF TUCSON NATURAL GAS FIRED COGENERATION & NATURAL GAS FIRED COGENERATION & ABSORPTION CHILLERABSORPTION CHILLERABSORPTION CHILLERABSORPTION CHILLER

PROJECT: CITY OF TUCSONPROJECT: CITY OF TUCSON

Central Plant BeforeCentral Plant Before

DISTRICT HEATING, COOLING & COGENERATIONDISTRICT HEATING, COOLING & COGENERATION

Aging Central PlantServed Heating and Cooling to Convention

Central Plant BeforeCentral Plant Before

Served Heating and Cooling to Convention Center Complex, Police and Fire Headquarters

$5 Million Invested - All Private FundsCentral Plant AfterCentral Plant After

New Chiller, Controls, Switchgear, Transformers, Cogeneration, Heat Recovery Boiler, Pumps, Cooling Tower W k Pi i d B ildiWork, Piping and Building

BuildingSwitchgear

THE EQUIPMENT (EXTERNAL):THE EQUIPMENT (EXTERNAL):

Transformers

Cogeneration Unit and Heat Recovery THE EQUIPMENT (INTERNAL):THE EQUIPMENT (INTERNAL):

Cogeneration Unit and Heat Recovery Boiler from General Electric

Produces 1605 kW of Electricity, 4 Million Btu/Hr of Heating and4 Million Btu/Hr of Heating and300 Tons of Cooling

HRBHRB

EvaporativeEvaporativeCoolerCooler SS SilencerSS Silencer Exhaust Exhaust

FanFan

New 500 Ton Hot Water New 500 Ton Hot Water Absorption ChillerAbsorption Chiller

Cameras for Continuous Viewing from Remote Location

Remote Monitor

PROJECT: CITY OF TUCSONPROJECT: CITY OF TUCSONINTERNET BASED MONITORING & CONTROLINTERNET BASED MONITORING & CONTROL

Engine Manufacturer’s Building

PROJECT: CITY OF TUCSONPROJECT: CITY OF TUCSONENERGY EFFICIENCYENERGY EFFICIENCY

MMBtu/Hr % of InputEnergy Input

Fuel (LHV) 13.50

Thermal OutputHeat from Jacket Water 0.95 7%

H t f E h t* 3 16 23%Heat from Exhaust* 3.16 23%Subtotal 4.11 30%

Electrical Output 5.48 41%Useful Energy Output 9.59 71%

PROJECT: PROJECT: PROJECT: PROJECT: NO. NEVADA CORRECTIONAL CENTER NO. NEVADA CORRECTIONAL CENTER WOOD FIRED (BIOMASS) WOOD FIRED (BIOMASS) COGENERATIONCOGENERATIONCOGENERATIONCOGENERATION

PROJECT: NO. NEVADA CORRECTIONAL CENTERPROJECT: NO. NEVADA CORRECTIONAL CENTERWOOD FIRED (BIOMASS) COGENERATIONWOOD FIRED (BIOMASS) COGENERATION

‘RENEWABLE ENERGY CENTER’‘RENEWABLE ENERGY CENTER’

Green Field Project Interconnected with Utility GridGreen Field ProjectLocated in Carson City, NV1,000kW Electrical Output31 050 Lb /h St O t t

Interconnected with Utility GridSupplies Prison Steam and ElectricityExcess Electricity Sold to Electric UtilityIncludes Photovoltaic Component31,050 Lbm/hr Steam Output Includes Photovoltaic Component

PROJECT: NO. NEVADA CORRECTIONAL CENTERPROJECT: NO. NEVADA CORRECTIONAL CENTERFuel Storage

80’ x 17’ x 5’ Deep 50 Tons of Wood (2 days)50 Tons of Wood (2 days)Covered/Sprinkled

Fuel Conveyor Systemy yTwo (2) Traveling Augers Carbide Tip ScrewsTransports Fuel from Bunker to Boiler

AUGER WALLTransports Fuel from Bunker to Boiler Metering BinFully Automated Belt Travel System23’ El ti Ri23’ Elevation Rise

CONVEYOR BELT

NNCC BIOMASS (WOOD) COGENERATIONNNCC BIOMASS (WOOD) COGENERATIONWOOD STORAGEWOOD STORAGE

PROJECT: NO. NEVADA CORRECTIONAL CENTERPROJECT: NO. NEVADA CORRECTIONAL CENTER1MW Steam Turbine Generator

1000kW 4 Pole 1800rpm 12 47kV 3 Phase 4 Pole, 1800rpm, 12.47kV, 3 Phase Generator Control with Auto Sync Relaying

900HP Wood-Fired Boiler31,050 Lbs/Hr 135 psi SteamWet Bottom Ash ConveyorWet Bottom Ash ConveyorReciprocating Bottom Grate4,750 Lbs per Hour of Wood Chips

PROJECT: NO. NEVADA CORRECTIONAL CENTERPROJECT: NO. NEVADA CORRECTIONAL CENTERMULTIMULTI--CYCLONE COLLECTORCYCLONE COLLECTOREmissions Control

Re-Injects Particulates for RecombustionFly Ash CollectionFly Ash CollectionReduces Emissions 50% More than EPA Requirement40’ Stack100HP Induced Draft FanCompliance Opacity Monitoring System

BAGHOUSE

Compliance Opacity Monitoring System

BAGHOUSE

PROJECT: NO. NEVADA CORRECTIONAL CENTERPROJECT: NO. NEVADA CORRECTIONAL CENTERSolar (Photovoltaic)

30kW System RatingUni Solar® Thin Film LaminatesUni-Solar® Thin Film LaminatesSouth Facing Single Slope BuildingBack Feeds 480V Breaker in Plant

PROJECT: PROJECT: PROJECT: PROJECT: WHITE PINE COUNTY SCHOOL DISTRICT WHITE PINE COUNTY SCHOOL DISTRICT WOOD FIRED (BIOMASS) HEATING WOOD FIRED (BIOMASS) HEATING BOILERBOILERBOILERBOILER

PROJECT: WHITE PINE COUNTY SDPROJECT: WHITE PINE COUNTY SDReplaced Old Fuel-Oil Fired Heating System

Wood-Chip Heating System is Fueled by a Portion of Area’s Thousands of Tons of Branches, Twigs and Needles Cleared to Abate Forest and Rangeland Fire Dangers

Utilizes a Low-Emission Economical Biomass Fuel SourceUtilizes a Low-Emission, Economical Biomass Fuel SourceKey Features:

Hurst Boiler with Messersmith Combustor Base ELY ELEMENTARY SCHOOL ELY ELEMENTARY SCHOOL

BTU Output: 3 MMBtu/Hour Auger/Conveyor/Metering Bin Fuel Feed System2560 Cubic Feet 5’ Deep Chip Storage Bin 2560 Cubic Feet, 5 Deep Chip Storage Bin (approx. 3 week supply)Boiler Fire Levels: 1500, 1750, 2000 Degrees FahrenheitInternet Based Control InterfaceInternet-Based Control Interface

PREPRE--ENGINEERED BUILDINGENGINEERED BUILDING

BOILERBOILER

PROJECT: WHITE PINE COUNTY SDPROJECT: WHITE PINE COUNTY SD

Fuel Source: Pinon and Juniper Forest

FUEL SUPPLYFUEL SUPPLYp

Thinning Waste

Annual Usage: 168 Tons of Wood Chips

Delivery Size: 20 to 30 Tons per Load (2 to 4 week supply)

Multi Year U S Forest Service Contract Multi-Year U.S. Forest Service Contract at No Cost to School District

Fuel Heat Content: 6,600 BTU/lb with 30% to 45% Moisture Content

Burn Rate at Peak Demand: 180lbs/hr (at full load, 1 ton of chips lasts nearly 11 hours)

WOOD CHIP AUGERWOOD CHIP AUGER

WOOD CHIP CONVEYOR & METERING BINWOOD CHIP CONVEYOR & METERING BIN

BOILER COMBUSTION CHAMBERBOILER COMBUSTION CHAMBER

PROJECT PROJECT PROJECT: PROJECT: ARIZONA STATE UNIVERSITY ARIZONA STATE UNIVERSITY ARIZONA STATE UNIVERSITY ARIZONA STATE UNIVERSITY NATURAL GAS FIRED COGENERATIONNATURAL GAS FIRED COGENERATION

PROJECT: ARIZONA STATE UNIVERSITYPROJECT: ARIZONA STATE UNIVERSITYProject Drivers

Critical High-End Research NeedsSeamless/Clean/Redundant Seamless/Clean/Redundant Electrical Power Campus ExpansionSupport of State-of-the-Art Bio Science Research FacilitiesEnvironmental and Efficiency Considerations ARCHITECTURAL RENDERING (AUGUST ’04)ARCHITECTURAL RENDERING (AUGUST ’04)

PROJECT: ARIZONA STATE UNIVERSITYPROJECT: ARIZONA STATE UNIVERSITYCHP Equipment - Combined Cycle

Taurus T-70 Solar Combustion Turbine: 6.6 MWs at Site ConditionsMurray Steam Turbine: 1 9 MWs at Site ConditionsMurray Steam Turbine: 1.9 MWs at Site Conditions8.5 MW Gross Output: Uses Chilled Water Cooling Coils for Turbine Inlet Air Cooling

Heat Recovery Steam Generator (HRSG)y ( )32,000 lbm/hr of Steam (unfired); All can be Used by Steam Turbine80,000 lbm/hr of Steam (fired)

10 000 Tons of Electric Chillers10,000 Tons of Electric Chillers12 kV Chiller MotorsFive - 2,000 Ton Centrifugal Chillers

4 MW Emergency Diesel Gen-Sets

PROJECT: ARIZONA STATE UNIVERSITYPROJECT: ARIZONA STATE UNIVERSITYCOMBINED CYCLECOMBINED CYCLE

Brayton Cycle - Combustion Turbine CycleRankin Cycle - Steam Turbine Cycle Brayton Cycle Combustion Turbine CycleRankin Cycle Steam Turbine Cycle (typical power plant cycle)

PROJECT: ARIZONA STATE UNIVERSITYPROJECT: ARIZONA STATE UNIVERSITYCOMBUSTION TURBINE & GENERATORCOMBUSTION TURBINE & GENERATOR

Air Generator Inlet

Generator

Exhaust

GENERATOR + COMBUSTION TURBINEGENERATOR + COMBUSTION TURBINE

1.9 MW Steam Turbine

CONTROL ROOMCONTROL ROOM

HRSGHRSGHRSGHRSG

ExhaustExhaust

HRSG Duct BurnersHRSG Duct Burners

PROJECT: ARIZONA STATE UNIVERSITYPROJECT: ARIZONA STATE UNIVERSITYUtility

Substation

SEL-351Directional Overcurrent and

Reclosing Relay

Fiber Optic

RTU

750 Feeder

g y

Utility Breaker

750 Feeder Management

Relay

Generator B k

GenSetCustomer Loads

Breaker 489 GeneratorManagement Relay

Customer Loads

PROJECT PROJECT PROJECT: PROJECT: UNIVERSITY OF ARIZONA UNIVERSITY OF ARIZONA UNIVERSITY OF ARIZONA UNIVERSITY OF ARIZONA NATURAL GAS FIRED COGENERATION & NATURAL GAS FIRED COGENERATION & THERMAL (ICE) STORAGETHERMAL (ICE) STORAGETHERMAL (ICE) STORAGETHERMAL (ICE) STORAGE

PROJECT: UNIVERSITY OF ARIZONAPROJECT: UNIVERSITY OF ARIZONATwo Natural Gas Combustion Turbines (12MW)G id I d Q lif i F ili SGrid Interconnected, Qualifying Facility StatusHeat Recovery Steam Generator Converts Waste Exhaust Heat into Steam to Provide Heat and Electricity throughout the Campus100 Tank, 15,0000-Ton Hour Internal Melt Thermal Energy Ice Storage SystemThermal Energy Ice Storage SystemFacility Upgrades Include Variable Air Volume Retrofits, Energy Efficient Lighting, Facility Metering Motor Replacement Fume Hood Metering, Motor Replacement, Fume Hood Replacement, Energy Management Controls, Etc.

PROJECT: UNIVERSITY OF ARIZONAPROJECT: UNIVERSITY OF ARIZONA15,000 TON15,000 TON--HOUR THERMAL ENERGY STORAGEHOUR THERMAL ENERGY STORAGE

QUESTIONS? QUESTIONS?

Mike ButerMike ButerMike ButerMike Buter480.727.9064480.727.9064

Michael.Buter@apses.com Michael.Buter@apses.com