Tom Acker, Ph.D. Cherise John, MS Candidate Department of Mechanical Engineering Mehrdad Khatibi...
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Tom Acker, Ph.D. Cherise John, MS Candidate Department of Mechanical Engineering Mehrdad Khatibi Tribal Clean Energy Resource Center Institute for Tribal
Tom Acker, Ph.D. Cherise John, MS Candidate Department of
Mechanical Engineering Mehrdad Khatibi Tribal Clean Energy Resource
Center Institute for Tribal Environmental Professionals November
18, 2014 Flagstaff, AZ 1 JEMEZ PUEBLO SOLAR POWER PRE-FEASIBILTY
STUDY
Slide 2
Sustainable Energy Solutions Project Funding US Department of
Energys American Indian Research and Education Initiative (DOE-
AIREI). American Indian Science and Engineering Society (AISES)
American Indian Higher Education Consortium (AIHEC) 2
Slide 3
Sustainable Energy Solutions Project Partners Project partners:
Pueblo of Jemez, New Mexico Northern Arizona University Southwest
Indian Polytechnic Institute Advising: Sandia National Laboratory
3
Slide 4
Sustainable Energy Solutions Outline Purpose Site overview and
system configurations System Advisor Model (SAM) Model inputs
Results Summary 4 Fixed PV horizontal axis wn.com
http://www.bluepacificsolar.com/ Fixed PV titled at latitude
Slide 5
Sustainable Energy Solutions Purpose Involve Native American
students in relevant R&D-type project that could benefit a
tribe Investigate potential for a utility-scale solar project on
the Jemez Pueblo reservation with the intent to sell to
out-of-state buyers 40 MW project size on the Holy Ghost site 5
Holy Ghost site on Jemez Reservation
Slide 6
Sustainable Energy Solutions Four Systems Considered NAU:
Fixed, horizontal PV NAU: 1-axis tracking, horizontal PV NAU &
SIPI: Fixed, tilted at latitude PV NAU & SIPI : CSP Solar Power
Tower 6 http://rredc.nrel.gov/solar/calc
ulators/pvwatts/system.html
http://www.solarchoice.net.au/blog/solar-trackers/ Horizontal PV
1-axis tracker Sandia National Laboratories / PIX 00036 Solar Power
Tower
Slide 7
Sustainable Energy Solutions Site with New Mexico Jemez Pueblo
is located within Sandoval County, New Mexico: Elevation: 5,600 ft
Climate: Dry-hot Population: 3,600 7 Google Maps, 2014.
Slide 8
Sustainable Energy Solutions High Solar Energy Potential Annual
latitude tilt irradiance level of 6.4 kWh/m 2 /day 8 Source: NREL
Solar Prospector, 2014 New Mexico State
Slide 9
Sustainable Energy Solutions 9 Google Maps, 2014 Credit:
Mehrdad Khatibi, 2014 Looking NW at Holy Ghost Site High Solar
Energy Potential
Slide 10
Sustainable Energy Solutions Transmission Grid Connection 10 5
miles to nearest grid interconnection Credit: Mehrdad Khatibi, 2014
Google Maps, 2014
Slide 11
Sustainable Energy Solutions Solar Resource: DNI, GHI, Diffuse
11
Slide 12
Sustainable Energy Solutions System Advisor Model (SAM) 12
Energy and performance model based on location, technology, system
design parameters, costs, etc. SAM uses a library of cost,
financial, performance, and resource models developed at NREL,
Sandia, Univ. of Wisconsin, and other places. NREL SAM, Jan
2014
Slide 13
Sustainable Energy Solutions SAM PV Inputs System size: 40 MW
DC PV panels: Prism Technologies 245 B (245 W panel) Inverter:
Satcon Technologies 1.25 MW System location: lat 35.71 long -106.95
Holy Ghost site 13 Size of the PV array system: Strings in
parallel: 7420 Number of inverters:30 PV modules in one string:
22
Slide 14
Sustainable Energy Solutions SAM Solar PV Module 14
Slide 15
Sustainable Energy Solutions SAM Solar Array Info 15
Slide 16
Sustainable Energy Solutions SAM Solar Configuration 16
Slide 17
Sustainable Energy Solutions SAM System Costs 17
Slide 18
Sustainable Energy Solutions Power Tower Specs Molten salt with
10 hours of storage Tower height 203 meters; Receiver height 20
meters 8,929 heliostats (mirrors) height, width 12.2 meters Field
size 1,953 acres Installed cost: $580M ($16.7k/kW) Source:
NREL
Slide 19
Sustainable Energy Solutions SAM Financial Inputs 19 PPA Price
$ 0.12/kWh 20 yr loan at 7% Real discount rate 8.2% Fed Income Tax
35% Fed Investment Tax Credit 30%
Slide 20
Sustainable Energy Solutions SAM Performance Outputs 20
Slide 21
Sustainable Energy Solutions PV Monthly Energy Output 21
Slide 22
Sustainable Energy Solutions Net Present Value Results 22
Slide 23
Sustainable Energy Solutions Net Present Value Sensitivity 23
1-axis tracker
Slide 24
Sustainable Energy Solutions Summary NAU and SIPI students
conducted studies Financial results look promising: PV systems NPA
ranged from $16M to $34M with a PPA price of $0.12 / kWh Power
tower NPV is $79M with PPA of $0.20 / kWH NPV is most sensitive to
PPA price and the real discount rate Future analysis: transmission
interconnect cost; optimize plant size, technology, and
configuration; tune SAM inputs to Jemez project and customers
24
Slide 25
Sustainable Energy Solutions THANK YOU! Nader Vadiee, Ph.D.
Jonathan West, Matthew Collins, Tomzak Billie Engineering and Engr
Technology Programs Southwestern Indian Polytechnic Institute 25
Thomas L. Acker, Ph.D., Mehrdad Khatibi Cherise John, Kaelyn
DeVore, Steven Tallas [email protected][email protected]
Stan Atcitty, Ph.D. [email protected] (Sandia is a multi-program
laboratory operated by Sandia Corporation, a Lockheed Martin
company, for the U.S. Department of Energys National Nuclear
Security administration under contract DE-AC04-94AL85000.) Joshual
Madalena, Governor John Galvin, Greg Kaufman, Division of Natural
Resources Pueblo of Jemez
Slide 26
Appendix 26
Slide 27
Sustainable Energy Solutions References (1) National Renewable
Energy Laboratory, Alliance for Sustainable Energy, LLC. Dynamic
Maps, GIS Data & Analysis Tools. 3 Sept. 2013. Web. Accessed 16
Apr. 2014. (2) National Renewable Energy Laboratory, Alliance for
Sustainable Energy, LLC. Solar Prospector. 16 Apr 2014. Web.
Accessed 16 Apr. 2014. (3) National Renewable Energy Laboratory,
Alliance for Sustainable Energy, LLC. System Advisor Model (SAM).
Published by samadmin on Mon, 4 May 2010. Web. Accessed 16 Apr.
2014. (4) Turchi, C.S., and G.A. Heath, Molten Salt Power Tower
Cost Model for the System Advisor Model (SAM). NREL/TP-5500-57625,
Feb 2013 27
Slide 28
Sustainable Energy Solutions Definitions 28 Calculated ppa
escalation (%)The PPA escalation rate is an annual escalation rate
that SAM uses to calculate the PPA price in Years Two and later.
LCOEThe LCOE is the total cost of installing and operating a
project expressed in dollars per kilowatt-hour of electricity
generated by the system over its life LCOE Nominal @ 10.9%The
nominal LCOE is a current dollar value and depends on the nominal
discount rate and does not depend on inflation rate. The nominal
(current) dollars may be more appropriate for short-term analyses.
LCOE Real @ 8.2%The real LCOE is a constant dollar,
inflation-adjusted value and depends on the real discount rate.
Real (constant) dollars may be appropriate for long-term analyses
to account for many years of inflation over the project life Net
present valueA project's net present value (NPV) is a measure of a
project's economic feasibility that includes both revenue (or
savings for residential and commercial projects) and cost. In
general, a positive net present value indicates an economically
feasible project, while a negative net present value indicates an
economically infeasible project, although this may not be true for
all analyses. Internal Rate of Return (%)The internal rate of
return is the nominal discount rate that corresponds to a net
present value of zero for projects with commercial PPA or utility
financing Minimum DSCRThe minimum DSCR is the minimum debt-service
coverage ratio that SAM calculates for projects with the Commercial
PPA or Utility IPP financing option that you choose Capacity
FactorThe capacity factor is the ratio of the system's predicted
electrical output in the first year of operation to the nameplate
output, which is equivalent to the quantity of energy the system
would generate if it operated at its nameplate capacity for every
hour of the year. For PV systems, the capacity factor is an
AC-to-DC value. First year kWhac/kWdcFor PV systems, SAM reports
the ratio of the system's annual AC electric output in Year one to
it's nameplate DC capacity: First year kWhac/kWdc = Net Annual
Energy Nameplate Capacity System performance factor (%)The system
performance factor is a measure of a photovoltaic system's annual
electric generation output in AC kWh compared to its nameplate
rated capacity in DC kW, taking into account the solar resource at
the system's location.
Slide 29
Sustainable Energy Solutions Power Tower Layout Source:
NREL