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DEVELOPMENT OF LEAP-WEAP INTEGRATED MODEL FOR ASSESSMENT
OF WATER AND GHG FOOTPRINTS FOR
POWER GENERATION SECTOR
ANKIT GUPTA; NIKHIL AGRAWAL; MD. AHIDUZZAMAN; AMIT KUMAR
Department of Mechanical Engineering
University of Alberta, Edmonton, AB, Canada
SPARK
NOVEMBER 6-8, 2017
EDMONTON, ALBERTA
2SPARK 2017
Outline
Background
Objective
Methodology
LEAP & WEAP Model Development
Results
3SPARK 2017
Background
Water Modelling -Water Saving
Pathways
Energy Modelling -GHG Emissions Reduction
Pathways
Integrated Model is needed to understand the trade
off between water saving and GHG reduction
pathways
4SPARK 2017
Project Objectives
Development of Integrated Water-Energy Model
for Alberta Power sector.
Development of water demand mitigation
scenarios in WEAP.
Assessing mitigation scenarios in LEAP, and
estimate GHG emissions.
5SPARK 2017
Modelling methodology
Step 1• Identification of power plants and major rivers in Alberta
Step 2
• Development of demand tree. Data collection on:
• Demand sector’s annual activity level (MWh of electricity generated)
• Evaluation of water intensities for power plant (m3/MWh)
• Head flow of supply source (river) (m3)
Step 3• Validation of demand tree using provincial published reports
Step 4
• Development of reference scenario, GHG mitigation and water efficientscenario in WEAP and LEAP
Step 5
• Integration of WEAP and LEAP: Development of water carbon bubble chartbased on cost of GHG avoided ($/ metric tonne), cumulative GHG mitigated(metric tonnes) and water lost for the GHG mitigated scenarios (million m3)
6SPARK 2017
LEAP ModelLEAP (Long range Energy Alternatives Planning)
LE
AP
Energy Demand
Energy Transformation
Energy Resources
Technology & Environment Database (TED)
Energy planning and modelling tool
GHG emissions assessment tool
Tracking energy consumption, production and resource extraction
7SPARK 2017
LEAP Demand TreeD
eman
d Transmission and
Distribution
Grid connected generation
Natural GasSimple Cycle
Annual capacity (MW)
Process Efficiency (%)
Capacity factor (%)
Capital Cost ($/KW)
Fixed OM Cost ($/KW)
Variable OM Cost ($/MWh)
Combined Cycle
Cogeneration
Wind
Hydro
Nuclear
Solar
Coal
Subcritical
Supercritical
Microgeneration Solar
8SPARK 2017
WEAP
Model Water specific
planning, forecasting and modeling tool
Policy analysis tool that can be used for assessing alternative water development and management strategies
Equates demand side with supply side and assists in predicting future water demand and supply for specific case
9SPARK 2017
Water Demand TreeN
ort
h S
ask
atc
hew
an
Riv
er
pow
er
pla
nts
Coal powerSubcritical
Battle River 3, 4, 5
Annual Activity level (MWh)
Annual water use (m3/MWh)
Monthly variation in demand (%)
Consumption (%)
Priority
Genesee 1, 2
Keephills 1, 2
Sundance 1 - 6
SupercriticalGenesee 3
Keephills 3
Natural Gas
Simple Cycle
Combined cycle
Cogeneration
Water UseSub-sectorRiver wise Sector
10SPARK 2017
Water SupplyW
EA
P
Supply & resources
Rivers
Head flow (m3/s)
Stream flow gauges
Stream flow data (m3/s)
Reservoirs
Physical
Storage capacity (Mm3)
Initial Storage (Mm3)
Volume-elevation curve
Observed Volume (Mm3)
Operation
Top of conservation
Top of buffer
Top of inactive
Priority
11SPARK 2017
LEAP + WEAP Result:
Water – Carbon Bubble Chart
Bubble represents water saved/ lost with respect to reference scenario
12SPARK 2017
Concluding Remarks
Many GHG mitigation options result in higher consumption of
water.
Integrated LEAP and WEAP model are great tool for
understanding trade off between water footprint and GHG
reduction scenarios.
Developed model provides more comprehensive results in terms
of scenario analysis to aid government and industry.
13SPARK 2017
References[1] International Energy Outlook, 2016, US Energy Information Administration https://www.eia.gov/forecasts/ieo/world.cfm
[2] World Energy Outlook, 2012, Water for Energy, International Energy Agency
http://www.worldenergyoutlook.org/media/weowebsite/2012/WEO_2012_Water_Excerpt.pdf
[3] World Energy Outlook, 2004, International Energy Agency http://www.worldenergyoutlook.org/media/weowebsite/2008-1994/weo2004.pdf
[4] Annual Electricity data collection, 2016, Alberta Utilities Commission http://www.auc.ab.ca/market-oversight/Annual-Electricity-Data-Collection/Pages/default.aspx
[5] Power Generation Water CEP Plan, 2012, Alberta Environment and Parks http://aep.alberta.ca/water/programs-and-services/water-for-life/water-conservation/efficiency-and-productivity.aspx
[6] Trends in GHG Emissions in the Alberta Electricity Market, 2013, EDC Associates Ltd. http://www.ippsa.com/IP_pdfs/Analysis%20of%20GHG%20Emissions%20in%20the%20Alberta%20Electricity%20Market%20-%20May%202,%202013.pdf
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Contact Information:
Dr. AMIT KUMAR
Professor
NSERC/Cenovus/Alberta Innovates Associate Industrial Research Chair in Energy and
Environmental Systems Engineering
Cenovus Energy Endowed Chair in Environmental Engineering
Deputy Director – Future Energy Systems
Department of Mechanical Engineering, University of Alberta
www.energysystems.ualberta.ca
The authors thank the NSERC/Cenovus/Alberta Innovates Associate Industrial Research Chair
Program (IRC) in Energy and Environmental Systems Engineering and the Cenovus Energy
Endowed Chair Program in Environmental Engineering for the financial support.
ACKNOWLEDGEMENT
