2009 ENERGY BUYERS’ CONFERENCE: Guam Power Authority John J. Cruz, Jr. P.E. Oct. 25-27, 2009.
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Transcript of 2009 ENERGY BUYERS’ CONFERENCE: Guam Power Authority John J. Cruz, Jr. P.E. Oct. 25-27, 2009.
2009 ENERGY BUYERS’ CONFERENCE:
Guam Power Authority
John J. Cruz, Jr. P.E.
Oct. 25-27, 2009
Guam Largest, southernmost island of
the Mariana archipelago Composed of volcanic material
and limestone base seabed material from coral deposits
1,500 NM southeast of Tokyo 1,500 NM east of Manila 3,700 NM west-southwest of
Honolulu 6,000 NM west of San Francisco Tropical Marine climate generally
warm and humid with two seasons: Dry (December to June) and Rainy (July to November)
Average rainfall 90-110 inches
Guam Power Authority (GPA) Established in 1968, a public
corporation and an enterprise fund of the Government of Guam. Administered by the Consolidated Commission on
Utilities Regulated by the Guam Public Utilities
Provides electrical power service throughout entire island Supports Guam Waterworks Authority through
operation and maintenance of 18 MW emergency generators for water and sewage pump stations
553 MW Installed Capacity System Peak (272/281.5) 29 Substations 663 miles of transmission and
distribution lines $840 million assets $308 million 2007 RevenuesLabor = 10% of Total
Revenues
Guam Power Authority (GPA)
Organizational Chart
Generation Sourcing552.2 MW Installed Capacity
IPP – Independent Power Producers
PMC – Performance Management Contractor
IPP Hybrid, 10%
GPA, 29%
IPP, 23%
PMC, 38%
IPP PMC GPA IPP Hybrid
Generation Mix552.2 MW Installed Capacity
281.5 MW peak
96% Reserve Margin
Steam Turbine, 33%
Slow-speed Diesel, 30%
Combustion Turbine, 26%
Fast-Track Diesels, 10%
Generation MixBASELOAD UNITS
Guam Power Authority, Baseload Units
Cabras 1 HSFO/LSFO
Cabras 2 HSFO/LSFO
Cabras 3 HSFO/LSFO
Cabras 4 HSFO/LSFO
Piti 8 (MEC) HSFO/LSFO
Piti 9 (MEC) HSFO/LSFO
Tanguisson 1 (Pruvient) HSFO
Tanguisson 2 (Pruvient) HSFO
Total
Steam Turbine
Steam Turbine
Slow Speed Diesel
Slow Speed Diesel
Slow Speed Diesel
Slow Speed Diesel
UNIT Equipment TypeMaximum Gross Capacity (MW)
Fuel Oil Type
352
Steam Turbine
Steam Turbine
44.2
44.2
26.5
26.5
66.0
66.0
39.3
39.3
Generation MixCTs and Fast-Track Diesels
UNIT Equipment Type Maximum Gross Capacity (MW) Fuel Oil Type
TEMES Combustion Turbine 40.0 HSFO/LSFO
Dededo CT 1 Combustion Turbine 23.0 HSFO/LSFO
Dededo CT 2 Combustion Turbine 22.0 HSFO/LSFO
Macheche CT Combustion Turbine 22.0 Diesel
Yigo CT Combustion Turbine 22.0 Diesel
Marbo CT Combustion Turbine 16.0 Diesel
Tenjo Vista Unit 1 Fast-Track Diesel 4.4 Diesel
Tenjo Vista Unit 2 Fast-Track Diesel 4.4 Diesel
Tenjo Vista Unit 3 Fast-Track Diesel 4.4 Diesel
Tenjo Vista Unit 4 Fast-Track Diesel 4.4 Diesel
Tenjo Vista Unit 5 Fast-Track Diesel 4.4 Diesel
Tenjo Vista Unit 6 Fast-Track Diesel 4.4 Diesel
Manenggon Unit 1 Fast-Track Diesel 5.3 Diesel
Manenggon Unit 2 Fast-Track Diesel 5.3 Diesel
Talofofo Unit 1 Fast-Track Diesel 4.4 Diesel
Talofofo Unit 2 Fast-Track Diesel 4.4 Diesel
Dededo Diesel Unit 1 Fast-Track Diesel 2.5 Diesel
Dededo Diesel Unit 2 Fast-Track Diesel 2.5 Diesel
Dededo Diesel Unit 3 Fast-Track Diesel 2.5 Diesel
Baseload Plants
Fast-Track Diesel Units
CT Units
Energy Production (Thermal)KWH per Year
1,803,2621,876,948 1,810,642 1,803,501 1,807,766
31,46059,87662,005
33,41595,120
5.01%
1.75%3.31% 3.21%
1.71%
94.99%98.25% 96.69% 96.79%
98.29%
0
200,000
400,000
600,000
800,000
1,000,000
1,200,000
1,400,000
1,600,000
1,800,000
2,000,000
2,200,000
FY 2005 FY2006 FY 2007 FY 2008 FY 2009
0%
20%
40%
60%
80%
100%
Generation from Baseload Generation from Diesel-fired Units
% Gen from RFO % Gen from DSL
Gro
ss G
ene
ratio
n,
MW
H
Energy Production (Thermal)KWH per Year, per Plant Type
0%
20%
40%
60%
80%
100%
120%
FY 2005 FY 2006 FY 2007 FY 2008 FY 2009
Steam Turbines Slow Speed Diesels CTs Fast Track Diesels
Fuel Consumptionin Thousand Barrels
0
500
1,000
1,500
2,000
2,500
FY 2005 FY 2006 FY 2007 FY 2008 FY 2009
0
20
40
60
80
100
120
140
160
180
HSFO LSFO Diesel
HSFO - monthly LSFO - monthly Diesel - monthly
An
nu
al C
on
sum
pti
on
(0
00 b
bls
per
Yea
r)
Ave
rag
e M
on
thly
Co
nsu
mp
tio
n
(000
bb
ls p
er M
on
th)
Fuel Delivery
RFO No. 6 Consumption estimates: Approximately 8,000 bbls/day Approximately 3 Million bbls/year
Delivered via ocean freight petro-shipping vessels chartered by off-island supplier Delivery Cycle = 31-33 Days Split-cargo combination of LSFO and HSFO Total Cargo Quantity (est.) = 240,000 to
300,000 bbls/shipment
Fuel Delivery
Ship is accommodated at the F-1 Dock Facility managed and operated by Shell Guam, Inc. Maximum LOA: 237 meters Maximum breadth: 45 meters Maximum vessel draft alongside: 14.8 meters Maximum displacement: 120,000 tons
RFO transported to shoretanks via a 24-inch diameter pipeline (Shell B-Line) GPA Fuel Farm Facility in Piti Shell Tank farm Facility in Agat
Fuel Delivery Scheme
RFO is transferred from ship to fuel farm via pipeline
RFO is delivered via Shipment every month. RFO is delivered from Ship to Fuel Farm through
the 24-inch pipeline Third-party certified petroleum testing laboratory
tests and inspects shipment
RFO is delivered to the different Baseload Plants via Pipeline 12-inch diameter pipeline from Tank 1934 & 1935
to Main Transfer Pump Station (MTPS) 6-inch diameter pipeline from MTPS to Cabras
and MEC plants 8-inch diameter pipeline from MTPS to
Tanguisson Plant
Diesel is delivered via: Pipeline for the TEMES and TENJO VISTA Plants Tanker Truck for all other Fast-Track Diesel and
CT Plants
Fuel Delivery and Issuance
Fuel Storage
30 – 60 days RFO Reserve Fuel Storage Capacity
RFO: 1,125,800 BBLS ( 47,283,672 Gallons) Diesel: 38,681 BBLS (1,624,729 Gallons)
Bulk Storage Ownership 2 Owned by GPA 3 Leased from Shell
All Plant Storage Tanks and Diesel Storage Tanks owned by GPA
Management Contract for operations of Fuel Bulk Storage Facility
Fuel Storage Facilities
Bulk Storage Capacity Pumpable Inventory
BBL GAL BBL GAL
RFO BULK STORAGE 1,006,000 42,252,000 905,400 38,026,800
RFO PLANT STORAGE 83,800 3,519,600 75,420 3,167,640
TOTAL RFO INVENTORY CAPACITY 1,089,800 45771600 980,820 41,194,440
TOTAL DIESEL INVENTORY CAPACITY 38,681 1,624,729 30,945 1,299,783
HSFO = 680,000 bbls
LSFO = 326,000 bbls
Fuel Specifications -RFO High Sulfur Fuel Oil, 2.00%S Max / Low Sulfur Fuel Oil, 1.19%S Max
Characteristics Limits ASTM Test
Sulfur, Wt%, Max HSFO / LSFO 2.00 / 1.19 D-4294
Pour Point, Maximum 70 ºF or 21 ºC D-97
Flash Point, Minimum 150 ºF or 66 ºC D-93
Fire Point, Deg. F., Minimum 200ºF or 94ºC D-92
Viscosity, SSU at 100 Deg F., Max./Min. 1500 / 600 D-445
Sediment by extraction, Wt. % Max. 0.50 D-473
Water by Distillation, Vol. % Max. 0.50 D-95
Vanadium Content, PPM, Max. 80 D-5708
Gross Heating Value, Guaranteed MBTU per barrel 5.9 D-240
Aluminum Plus Silicon PPM Maximum (Individual results to be reported separately)
80 D-5184
Ash Content, Wt. %, Max. 0.10 D-482
Carbon Residue, Wt. % Conradson,Maximum 15 D-4530
Gravity, Deg API at 60 Degrees F, Min / Max 14.0 / 23.0 D-287
Total Sediment – accelerated, % mass, max 0.15 ISO 10307-2
Compatibility
a) Cleanliness Ratio, max 2 ASTM D-4740
b) Compatibility Ratio, max 2
Fuel Specifications - Diesel
DIESEL – For Fuel Deliveries to Baseloads, TEMES, CTs, Water Systems Generators and Fast Tracks
Characteristics Specification Limits Test methods
GRAVITYAPI at 60 ºF, Min./Max. 32-42 D-1298
FLASH POINT, PMCC deg. F. 140 MIN D-93
SULFUR CONTENT, Wt. % 0.50 MAX D-129
APPEARANCE @ambient temp. Clear & bright VISUAL
POUR POINT, Deg. F. 50 MAX D-97
CETANE Index Number (Calc.) 48 MIN. D-976
WATER & SEDIMENTS by centrifuge, Volume %. 0.050 MAX D-1798
CARBON RESIDUE 10% Bottom, Wt. %. 0.200 MAX D-189
CORROSION, Copper Strip, 3-hrs @ 212 deg. F. ASTM No. 2 MAX D-130
ASH CONTENT, Wt. %, 0.005 MAX D-482
NEUTRALIZATION Number, Total Acid Number, mg KOH/gm sample
0.200 MAX D-974
COLOR, ASTM Color 3.0 MAX. D-15000
Guaranteed Heating Value, MMBTU/bbl 5.9000 D-240
Metals, PPM Baird AE
Fuel Specifications - Diesel
DIESEL – For Fuel Deliveries to Tenjo Vista Diesel Plant
Characteristics Specification Limits Test methods
GRAVITYAPI at 60 ºF, Min./Max. 32-42 D-1298
FLASH POINT, PMCC deg. F. 140 MIN D-93
SULFUR CONTENT, Wt. % 0.30 MAX D-129
APPEARANCE @ambient temp. Clear & bright VISUAL
POUR POINT, Deg. F. 50 MAX D-97
CETANE Index Number (Calc.) 48 MIN. D-976
WATER & SEDIMENTS by centrifuge, Volume %. 0.050 MAX D-1798
CARBON RESIDUE 10% Bottom, Wt. %. 0.200 MAX D-189
CORROSION, Copper Strip, 3-hrs @ 212 deg. F. ASTM No. 2 MAX D-130
ASH CONTENT, Wt. %, 0.005 MAX D-482
NEUTRALIZATION Number, Total Acid Number, mg KOH/gm sample
0.200 MAX D-974
COLOR, ASTM Color 3.0 MAX. D-15000
Guaranteed Heating Value, MMBTU/bbl 5.9000 D-240
Metals, PPM Baird AE
GPA has a contract for the Management of the Fuel Bulk Storage Facility (Fuel Farm) Contractor is responsible for managing the fuel
farm, receiving fuel supply, and delivering fuel supply to the different power plants
Third-party certified petroleum testing laboratory tests fuel
Bid for the management and operations of the bulk storage facility is in progress New contract shall include the management of
GPA’s fuel pipelines Focus on reducing inventory losses and
maintenance of GPA facilities
Fuel Bulk Storage Facility
GPA’s Key Fuel Suppliers
Off-island Supplier Contract with a Singapore-based RFO Supplier Currently contracted to BP Singapore, PTE Ltd.
On-island Suppliers On-island supplier for Diesel Fuel Oil (0.5% and
0.3% Sulfur) Current contracted to Shell, Guam Inc. New Bid in process
Current Supplier: BP Singapore, PTE Ltd.
3 Years (February 01, 2007 to January 01, 2010) w/ 2 Years Extension Option
Quantity = Close to 3 Million BBLS per year Pricing = Market + Fixed Premium
Market Price = Average of previous month’s posting
Delivery Details (Spot/term, FOB delivered, etc.)
RFO Supply Contract
Pricing = Market + Fixed Premium Market = Average of previous month’s posting
New Contracts shall be awarded on December 2009
Supply of 0.5% Sulfur Diesel Fuel Supply except Tenjo
Supply of 0.3% Sulfur Diesel Fuel Supply for Tenjo Vista Power Plant
Includes options for: Various delivery methods (tanker truck,
pipeline) Adopting 500 PPM Diesel Fuel
*pending manufacturer’s recommendations on compatibility, specification limits for fuel characteristics
Diesel Fuel Oil Supply
GPA’s Integrated Resource Plan Identifies key assumptions specific to future
electric needs on Guam Viable resource and demand side technologies Load and Fuel forecasts Environmental Impact and Constraints
Uses a licensed resource expansion optimization tool (STRATEGIST) for modeling framework
Incorporates a Stakeholder Process
Demand Forecast
250
275
300
325
350
375
400
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026
Fiscal Year
MW
2007 - 275 MW
2016 - 348 MW
2011 - 331 MW
2008 - 298 MW
Demand Forecast (continued)
250
300
350
400
450
500
550
600M
W
Actual High Tourism/High Infrastructure High Tourism /Low Infrastructure
Low Tourism/High Infrastructure Baseline
Installed Capacity by 2008
1 Day in 4.5 Year Reserve Curve
H/H Growth Rate: 2.28% (2006-2016)3.13% (2006-2012)5.65% (2010-2011)
Two Largest Units Capacity Resrve Curve
Load Forecasts
Installed Capacity (MW)
Baseline
N-1
N-2Reserve Margin
150
200
250
300
350
400
450
500
550
600
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
MW
Installed Capacity (MW) Baseline N-1 N-2 Reserve Margin
GPA created an Integrated Resource Plan (IRP) which addresses Fuel Diversification and Renewable Energy Requirements (PL 29-62) by Recommending:
• Acquisition of renewable resources to offset the high price of fuel, and
• Conversion of existing plants to use Liquefied Natural Gas as an additional measure to lower impact of petroleum volatility and lower fuel expenses.
GPA has initiated the acquisition for renewable resources (Wind, Solar, Hydro, Biomass, Geothermal, OTEC, Wave).
Moving Forward
Phase 1 of Renewable Bid in final stages of procurement Projects > 5MW and up to 40 MW (for Phase I) Commissioning Period within 36 Months Commercially viable with min. 1 year of
performance data RFP for Wind Monitoring in progress Pilot project for 1 MW Wind Turbine in progress
Phase 2 of Renewable Bid to be announced by Second Quarter of 2010
Moving Forward
Future Fuel Demand Outlook Generation by Fuel Type
(Base 9-3)
-
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000G
WH
DSL LNG RFO WIND SWAC
Future Fuel Demand Outlook Expected increase in demand due to military
build-up Increase in use of Diesel-fired Units Conversion of Diesel-fired Units to LNG/CNG Utilization of Renewable Energy Resources such as
Wind Power, Geothermal, Solar and others
Use of HSFO and LSFO dependent on weather conditions GPA continuously improves on its operations to
maximize efficiency of the units Improvements on HSFO and LSFO consumption
monitoring and forecasting Research on-going regarding additional fuel storage
facilities
Shift to 500 PPM Diesel Fuel Oil (0.05% Sulfur) Current issue is to determine the impact of using
500 PPM Diesel to each plant equipment
Future Fuel Quality Outlook