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NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.
Assessing Your Renewable Energy
Resources
Roger Taylor
Principal Project
Manager
Tribal Energy Program
10/27/2010
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NATIONAL RENEWABLE ENERGY LABORATORY
Clear Sky
Direct
(Beam)
Global
(Total)
Diffuse
(Sky)
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NATIONAL RENEWABLE ENERGY LABORATORY
Partly Cloudy Sky
Direct
(Beam)
Global
(Total)
Diffuse
(Sky)
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NATIONAL RENEWABLE ENERGY LABORATORY
A Plot of Land, 100 Miles on a side, in Nevada could provide all the kWh consumed by the U.S.
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NATIONAL RENEWABLE ENERGY LABORATORY
•Initial solar resource and GIS
screening analysis used to
identify regions most
economically favorable to
construction of large-scale
CSP systems
•GIS analysis used in
conjunction with transmission
and market analysis to identify
favorable regions in the
southwest
National Renewable Energy Laboratory
U.S. Southwest GIS Screening Analysis for CSP Generation
Screening Approach
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NATIONAL RENEWABLE ENERGY LABORATORYNational Renewable Energy Laboratory
Solar Resource Screening Analysis
All Solar Resources
Locations Suitable forDevelopment
Start with direct normal solar resource estimates derived from 10 km satellite data.
Eliminate locations with less than 6.0 kWh/m2/day.
Exclude environmentally sensitive lands, major urban areas, and water features.
Remove land areas with greater than 1% (and 3%) average land slope.
Eliminate areas with a minimum contiguous area of less than 1 square kilometers.
1.
2.
3.
4.
5.
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NATIONAL RENEWABLE ENERGY LABORATORY
National Renewable
Energy Laboratory
GIS Solar Resource Screening Analysis
Unfiltered Resource Solar > 6.0 kwh/m2-day
Land Exclusions Slope Exclusions
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NATIONAL RENEWABLE ENERGY LABORATORY
Optimal CSP Sites
from CSP Capacity Supply Curves
National Renewable Energy Laboratory
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NATIONAL RENEWABLE ENERGY LABORATORY
National Renewable Energy Laboratory
354 MW Luz Solar Electric Generating Systems (SEGS)Nine Plants built 1984 - 1991
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NATIONAL RENEWABLE ENERGY LABORATORY
64 MWe Acciona Nevada Solar OneSolar Parabolic Trough Plant
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NATIONAL RENEWABLE ENERGY LABORATORYNational Renewable Energy Laboratory
SunEdison 8MW, San Louis Valley, CO
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY 17
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NATIONAL RENEWABLE ENERGY LABORATORY
Importance of “Micro-Siting”
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NATIONAL RENEWABLE ENERGY LABORATORY
Calculating Turbine Output
Estimating Annual Wind Turbine Production
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
0 5 10 15 20 25
Wind Speed (m/s)
Win
d S
pe
ed
Dis
trib
uti
on
(ho
urs
) /
An
nu
al
En
erg
y
Pro
dc
uti
on
(1
0s
of
kW
h)
0
10
20
30
40
50
60
70
80
90
Win
d T
urb
ine
Po
we
r (k
W)
Wind Speed Distribution (Hours) Annual Energy Production (10s of kWh) WTG Power (kW)
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NATIONAL RENEWABLE ENERGY LABORATORY
WIND ROSE
Wind Rose Energy Rose
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
Geothermal Resource Potential
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NATIONAL RENEWABLE ENERGY LABORATORY
Geothermal Manifestations
Geysir, Iceland
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NATIONAL RENEWABLE ENERGY LABORATORY
Diagram courtesy of the the Geothermal Education Office
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NATIONAL RENEWABLE ENERGY LABORATORY
Diagram courtesy of the the Geothermal Education Office
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
Hydroelectric Power: Where It Comes From
• Flowing water has energy that can be
captured for some useful purpose
• When this energy is captured and used to
generate electricity, it is called
hydroelectric power or hydropower
• Hydropower plants use the energy of
flowing water to turn a turbine that rotates
a generator to produce electricity
• Hydrologic cycle: sun causes evaporation
from lakes and oceans, forms clouds, falls
as rain or snow, then flows back down to
the ocean, and the cycle repeats
• Hydropower is renewable because the
water cycle is an endless, constantly
recharging system
• Hydropower uses a fuel (water) that is not
consumed in the process of generating
electricity
The water (hydrologic) cycle
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NATIONAL RENEWABLE ENERGY LABORATORY
Hydroelectricity Physics
Power (kW) = 10 x Flow (m3/s) x Head (m) x
Power (kW) = Head (ft) x Flow (cfs) x /11.8
= turbine-generator efficiency ~80%
Head
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NATIONAL RENEWABLE ENERGY LABORATORY
Potential Resources
New Conventional Hydro (low power to large hydro) = 62,300 MW
Hydrokinetic = 12,800 MW (tidal only assessed for 5 states, ocean current not assessed)
Wave Energy = 10,000 to 20,000 MW
TOTAL = 85-95 GW
Virtual Hydropower ProspectorRegion Selector
http://hydropower.id.doe.gov/prospector/r_selector.shtml
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NATIONAL RENEWABLE ENERGY LABORATORY
Existing Hydro, Transmission, Land Ownership
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NATIONAL RENEWABLE ENERGY LABORATORY
Micro-Hydro Penstock
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NATIONAL RENEWABLE ENERGY LABORATORY
Yakama Wapato Irrigation Project
Drop 4
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
Hydrokinetic: “Moving Water” (no dams!)
– Currents: Ocean & River
– Waves
Definitions
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
Resource AssessmentWater Speed Profile of
Yukon River at Circle
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NATIONAL RENEWABLE ENERGY LABORATORY
http://www.eere.energy.gov/news/images/08_12_17_hydrokinetic_turbine.jpg
Hydro Green Energy delivered the first of two hydrokinetic turbines to Hastings, Minnesota, in early December. The barge-mounted power plant will be parked in the output of Mississippi Lock and Dam No. 2, which is visible in the background. (12/15/08)
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NATIONAL RENEWABLE ENERGY LABORATORY
Challenges/Considerations
» River “Trash” (Debris)
» Ice & break-up
» Silt
» Water Speed
» Anchoring
» Power Delivery to Shore
» Navigable Waters
» Fish
» Permitting
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NATIONAL RENEWABLE ENERGY LABORATORY
From: http://www.ferc.gov/industries/hydropower/indus-act/hydrokinetics/issued-hydrokinetic-permits-map.pdf
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NATIONAL RENEWABLE ENERGY LABORATORY
Potential in Alaska
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NATIONAL RENEWABLE ENERGY LABORATORY
Indigenous renewable energy resources are key to human survival and future village economies in Alaska
Wind Geothermal
Biomass
July
SolarSmall Hydro
Diesel-based villages are likely, not sustainable
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NATIONAL RENEWABLE ENERGY LABORATORY Icepag
Biomass & Bioenergy Flows
Process Residuesblack liquor
sawdustbark
Bioenergystalks & strawsharvest residuesforest slashforest harvest for energyplantations
EnergyServices
heatCHPelectricity
Biomass
pulppaperlumberplywoodcotton
Materials
ConsumersMSW clean fractionyard trimmingsconstr. & demolitionwoodnon-recyclable
organics
Crops, Animals
Process Residuesdung
bagasse
charcoalbiogasethanolBiofuels
Food
Fiber
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
Thermal Biochemical Physical
Combustion Gasification Pyrolysis
Heat Fuel Gases (producer gas) (CO + H2)
Char, gases, aerosols (syn gas)
Pretreatment
Fermentation
Ethanol
Hydrolysis
(Heat & Pressure)
Liquids
No Oxygen
Partial Oxygen
Excess OxygenA/D
CH4
•Heat/power/CHP
•Boiler, steam turbine generator
•Co-fire with coal
•IC engine for CHP•Steam turbine•Catalytic conversion to alcohols, chemicals
Biomass Energy Pathways
•Bio-oil for boilers•Bio-oil for power•Specialty chemicals•Further refining for transportation fuels
Cooling
Source: NREL
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NATIONAL RENEWABLE ENERGY LABORATORY
Wood stove heating
Seasoned firewood (20% moisture) @ $300/cord (~$150/ton)
~20 MBTU/cord high efficiency wood stove @ 77% efficiency
~ $20/MBTU delivered to home~$2.50/gal heating oil
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NATIONAL RENEWABLE ENERGY LABORATORY
Commercial-Scale Wood Heating
Green wood chips (50% moisture) @ $50/ton~8.6 MBTU/ton in a
high efficiency wood boiler @ 85% efficiency
~ $7.00/MBTU delivered to building
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NATIONAL RENEWABLE ENERGY LABORATORY
ProductsFuels Ethanol Biodiesel “Green” Gasoline & Diesel
Power Electricity Heat
Chemicals Plastics Solvents Chemical Intermediates Phenolics Adhesives Furfural Fatty Acids Acetic Acid Carbon Black Paints Dyes, Pigments, and Ink Detergents Etc.
Food and Feed
Enzymatic Fermentation Gas/liquid Fermentation Acid Hydrolysis/
Fermentation Gasification Combustion Co-firing Trans-esterification
Conversion Processes
Range of Biorefinery Concepts
Trees Grasses Agricultural Crops Residues Animal Wastes Municipal Solid Waste Algae Food Oils
Biomass Feedstock
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NATIONAL RENEWABLE ENERGY LABORATORY
Corn (largest volume grain and source of EtOH in U.S.)
• Potential to displace 10-20% of our gasoline
Soybeans, fats & greases (largest sources of biodiesel)
• Potential to displace 5-10% of our diesel
Over 1 billion tons/year of lignocellulosic biomass (trees, grasses, etc.) could be available in the U.S.
• Potential to displace 50-70% of our gasoline
U.S. Biomass Resource Potentials
Short-term: improve cost and efficiency of corn ethanol & biodieselMid to Long-term: focus on lignocellulose (trees, grasses, & residues)
FoodSupplies
Not a FoodSupply
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NATIONAL RENEWABLE ENERGY LABORATORY
U.S. Biomass Resource Assessment
• Updated resource assessment - April 2005• Jointly developed by U.S. DOE and USDA• Referred to as the “Billion Ton Study”
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NATIONAL RENEWABLE ENERGY LABORATORY
Based on ORNL & USDA Resource Assessment Study by Perlach et.al. (April 2005)
http://www.eere.energy.gov/biomass/pdfs/final_billionton_vision_report2.pdf
Billion Barrel of Oil Equivalents
The 1.3 Billion Ton Biomass Scenario
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NATIONAL RENEWABLE ENERGY LABORATORY
Jet Fuel From Algae
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NATIONAL RENEWABLE ENERGY LABORATORY
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NATIONAL RENEWABLE ENERGY LABORATORY
Energy Efficiency
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NATIONAL RENEWABLE ENERGY LABORATORY
Building Design